Oscar Herrera, a 35-year-old construction worker, presents as a new patient for an emergency appointment, complaining of a severe, throbbing pain associated with his lower left molar, tooth 37. He appears anxious and is in a hurry to return to work. His medical history form is sparsely filled out; he verbally denies any significant medical conditions or regular medications, stating he is ‘generally healthy’. Clinical examination reveals a large carious lesion on tooth 37, tender to percussion. You decide to administer an inferior alveolar nerve block to achieve anaesthesia for emergency treatment. During the injection, Mr.Herrera flinches suddenly from a sharp sensation. As this happens, you feel a distinct prick on the pad of your left index finger through your glove. You safely withdraw the needle from the patient’s mouth. Upon removing your glove, you see a small, distinct puncture wound which is actively bleeding. The needle was contaminated, having been in the patient’s tissues. His blood-borne virus status is unknown. You are the sole practitioner in the clinic today, working with one dental assistant.

Oscar Herrera, a 35-year-old construction worker, presents as a new patient for an emergency appointment, complaining of a severe, throbbing pain associated with his lower left molar, tooth 37. He appears anxious and is in a hurry to return to work. His medical history form is sparsely filled out; he verbally denies any significant medical conditions or regular medications, stating he is ‘generally healthy’. Clinical examination reveals a large carious lesion on tooth 37, tender to percussion. You decide to administer an inferior alveolar nerve block to achieve anaesthesia for emergency treatment. During the injection, Mr.Herrera flinches suddenly from a sharp sensation. As this happens, you feel a distinct prick on the pad of your left index finger through your glove. You safely withdraw the needle from the patient’s mouth. Upon removing your glove, you see a small, distinct puncture wound which is actively bleeding. The needle was contaminated, having been in the patient’s tissues. His blood-borne virus status is unknown. You are the sole practitioner in the clinic today, working with one dental assistant.

Oscar Herrera, a 35-year-old construction worker, presents as a new patient for an emergency appointment, complaining of a severe, throbbing pain associated with his lower left molar, tooth 37. He appears anxious and is in a hurry to return to work. His medical history form is sparsely filled out; he verbally denies any significant medical conditions or regular medications, stating he is ‘generally healthy’. Clinical examination reveals a large carious lesion on tooth 37, tender to percussion. You decide to administer an inferior alveolar nerve block to achieve anaesthesia for emergency treatment. During the injection, Mr.Herrera flinches suddenly from a sharp sensation. As this happens, you feel a distinct prick on the pad of your left index finger through your glove. You safely withdraw the needle from the patient’s mouth. Upon removing your glove, you see a small, distinct puncture wound which is actively bleeding. The needle was contaminated, having been in the patient’s tissues. His blood-borne virus status is unknown. You are the sole practitioner in the clinic today, working with one dental assistant.

Oscar Herrera, a 35-year-old construction worker, presents as a new patient for an emergency appointment, complaining of a severe, throbbing pain associated with his lower left molar, tooth 37. He appears anxious and is in a hurry to return to work. His medical history form is sparsely filled out; he verbally denies any significant medical conditions or regular medications, stating he is ‘generally healthy’. Clinical examination reveals a large carious lesion on tooth 37, tender to percussion. You decide to administer an inferior alveolar nerve block to achieve anaesthesia for emergency treatment. During the injection, Mr.Herrera flinches suddenly from a sharp sensation. As this happens, you feel a distinct prick on the pad of your left index finger through your glove. You safely withdraw the needle from the patient’s mouth. Upon removing your glove, you see a small, distinct puncture wound which is actively bleeding. The needle was contaminated, having been in the patient’s tissues. His blood-borne virus status is unknown. You are the sole practitioner in the clinic today, working with one dental assistant.

Oscar Herrera, a 35-year-old construction worker, presents as a new patient for an emergency appointment, complaining of a severe, throbbing pain associated with his lower left molar, tooth 37. He appears anxious and is in a hurry to return to work. His medical history form is sparsely filled out; he verbally denies any significant medical conditions or regular medications, stating he is ‘generally healthy’. Clinical examination reveals a large carious lesion on tooth 37, tender to percussion. You decide to administer an inferior alveolar nerve block to achieve anaesthesia for emergency treatment. During the injection, Mr.Herrera flinches suddenly from a sharp sensation. As this happens, you feel a distinct prick on the pad of your left index finger through your glove. You safely withdraw the needle from the patient’s mouth. Upon removing your glove, you see a small, distinct puncture wound which is actively bleeding. The needle was contaminated, having been in the patient’s tissues. His blood-borne virus status is unknown. You are the sole practitioner in the clinic today, working with one dental assistant.

A 35-year-old Japanese-Australian woman, Yuki Watanabe, presents for an emergency appointment. Her chief complaint is, “My lower right back tooth broke a week ago, and now it’s throbbing constantly.” She appears visibly distressed and states, “I’m terrified of the dentist and haven’t been in years. A friend told me about laughing gas, and I’m hoping I can have that for whatever needs to be done.”
Her medical history reveals several significant conditions. She has severe, poorly-controlled asthma, requiring frequent use of a salbutamol inhaler and a daily fluticasone propionate inhaler. She also has a history of hypertension, which is well-controlled with perindopril. She is undergoing active chemotherapy with bleomycin for ovarian cancer.

She reports no known drug allergies.
Extra-oral examination is unremarkable, with no facial swelling or lymphadenopathy. Intra-orally, there is generalised plaque accumulation and marginal gingivitis. Tooth 46 presents with a fractured mesio-occluso-lingual amalgam restoration, and a visible fracture line extends subgingivally along the mesial aspect. The tooth is tender to percussion and palpation of the buccal vestibule. There is no associated swelling or sinus tract. Pulp sensibility testing with cold and an electric pulp tester elicits no response from tooth 46.

A periapical radiograph of tooth 46 reveals a vertical radiolucent line through the mesial root,widening of the periodontal ligament space, and a diffuse, ill-defined radiolucency associated with the mesial root apex.

A 35-year-old Japanese-Australian woman, Yuki Watanabe, presents for an emergency appointment. Her chief complaint is, “My lower right back tooth broke a week ago, and now it’s throbbing constantly.” She appears visibly distressed and states, “I’m terrified of the dentist and haven’t been in years. A friend told me about laughing gas, and I’m hoping I can have that for whatever needs to be done.”
Her medical history reveals several significant conditions. She has severe, poorly-controlled asthma, requiring frequent use of a salbutamol inhaler and a daily fluticasone propionate inhaler. She also has a history of hypertension, which is well-controlled with perindopril. She is undergoing active chemotherapy with bleomycin for ovarian cancer.

She reports no known drug allergies.
Extra-oral examination is unremarkable, with no facial swelling or lymphadenopathy. Intra-orally, there is generalised plaque accumulation and marginal gingivitis. Tooth 46 presents with a fractured mesio-occluso-lingual amalgam restoration, and a visible fracture line extends subgingivally along the mesial aspect. The tooth is tender to percussion and palpation of the buccal vestibule. There is no associated swelling or sinus tract. Pulp sensibility testing with cold and an electric pulp tester elicits no response from tooth 46.

A periapical radiograph of tooth 46 reveals a vertical radiolucent line through the mesial root,widening of the periodontal ligament space, and a diffuse, ill-defined radiolucency associated with the mesial root apex.

A 35-year-old Japanese-Australian woman, Yuki Watanabe, presents for an emergency appointment. Her chief complaint is, “My lower right back tooth broke a week ago, and now it’s throbbing constantly.” She appears visibly distressed and states, “I’m terrified of the dentist and haven’t been in years. A friend told me about laughing gas, and I’m hoping I can have that for whatever needs to be done.”
Her medical history reveals several significant conditions. She has severe, poorly-controlled asthma, requiring frequent use of a salbutamol inhaler and a daily fluticasone propionate inhaler. She also has a history of hypertension, which is well-controlled with perindopril. She is undergoing active chemotherapy with bleomycin for ovarian cancer.

She reports no known drug allergies.
Extra-oral examination is unremarkable, with no facial swelling or lymphadenopathy. Intra-orally, there is generalised plaque accumulation and marginal gingivitis. Tooth 46 presents with a fractured mesio-occluso-lingual amalgam restoration, and a visible fracture line extends subgingivally along the mesial aspect. The tooth is tender to percussion and palpation of the buccal vestibule. There is no associated swelling or sinus tract. Pulp sensibility testing with cold and an electric pulp tester elicits no response from tooth 46.

A periapical radiograph of tooth 46 reveals a vertical radiolucent line through the mesial root,widening of the periodontal ligament space, and a diffuse, ill-defined radiolucency associated with the mesial root apex.

A 35-year-old Japanese-Australian woman, Yuki Watanabe, presents for an emergency appointment. Her chief complaint is, “My lower right back tooth broke a week ago, and now it’s throbbing constantly.” She appears visibly distressed and states, “I’m terrified of the dentist and haven’t been in years. A friend told me about laughing gas, and I’m hoping I can have that for whatever needs to be done.”
Her medical history reveals several significant conditions. She has severe, poorly-controlled asthma, requiring frequent use of a salbutamol inhaler and a daily fluticasone propionate inhaler. She also has a history of hypertension, which is well-controlled with perindopril. She is undergoing active chemotherapy with bleomycin for ovarian cancer.

She reports no known drug allergies.
Extra-oral examination is unremarkable, with no facial swelling or lymphadenopathy. Intra-orally, there is generalised plaque accumulation and marginal gingivitis. Tooth 46 presents with a fractured mesio-occluso-lingual amalgam restoration, and a visible fracture line extends subgingivally along the mesial aspect. The tooth is tender to percussion and palpation of the buccal vestibule. There is no associated swelling or sinus tract. Pulp sensibility testing with cold and an electric pulp tester elicits no response from tooth 46.

A periapical radiograph of tooth 46 reveals a vertical radiolucent line through the mesial root,widening of the periodontal ligament space, and a diffuse, ill-defined radiolucency associated with the mesial root apex.

A 35-year-old Japanese-Australian woman, Yuki Watanabe, presents for an emergency appointment. Her chief complaint is, “My lower right back tooth broke a week ago, and now it’s throbbing constantly.” She appears visibly distressed and states, “I’m terrified of the dentist and haven’t been in years. A friend told me about laughing gas, and I’m hoping I can have that for whatever needs to be done.”
Her medical history reveals several significant conditions. She has severe, poorly-controlled asthma, requiring frequent use of a salbutamol inhaler and a daily fluticasone propionate inhaler. She also has a history of hypertension, which is well-controlled with perindopril. She is undergoing active chemotherapy with bleomycin for ovarian cancer.

She reports no known drug allergies.
Extra-oral examination is unremarkable, with no facial swelling or lymphadenopathy. Intra-orally, there is generalised plaque accumulation and marginal gingivitis. Tooth 46 presents with a fractured mesio-occluso-lingual amalgam restoration, and a visible fracture line extends subgingivally along the mesial aspect. The tooth is tender to percussion and palpation of the buccal vestibule. There is no associated swelling or sinus tract. Pulp sensibility testing with cold and an electric pulp tester elicits no response from tooth 46.

A periapical radiograph of tooth 46 reveals a vertical radiolucent line through the mesial root,widening of the periodontal ligament space, and a diffuse, ill-defined radiolucency associated with the mesial root apex.

Dimitri Demetriou, a 62-year-old Greek-Australian man who owns a small cafe, presents for a consultation. His main concern is-
“My top teeth are loose and sore, and I can’t eat properly. I’m embarrassed to smile because I talk to customers all day.” Mr. Demetriou has a history of Type 2 diabetes, His most recent HbA1c reading was 7.8%. He has no known drug allergies. He is a non-smoker and consumes one to two glasses of wine with dinner. His dental attendance has been irregular, typically only for pain or extractions. He reports brushing his teeth once daily and does not use any interdental cleaning aids. On examination, there is a generalised accumulation of plaque and calculus.

The remaining maxillary teeth are 14, 13, 12, 11, 21, 22, 23, 24. All of these teeth exhibit Grade II to III mobility. Periodontal probing reveals generalised depths ranging from 7-9 mm, with bleeding on probing at all sites. Significant generalised gingival recession is also noted. The mandibular arch is fully dentate with signs of moderate generalised gingivitis.

The rest of the oral mucosa appears pink and healthy, with no suspicious lesions noted. The remaining maxillary teeth are free of active caries.

Dimitri Demetriou, a 62-year-old Greek-Australian man who owns a small cafe, presents for a consultation. His main concern is-
“My top teeth are loose and sore, and I can’t eat properly. I’m embarrassed to smile because I talk to customers all day.” Mr. Demetriou has a history of Type 2 diabetes, His most recent HbA1c reading was 7.8%. He has no known drug allergies. He is a non-smoker and consumes one to two glasses of wine with dinner. His dental attendance has been irregular, typically only for pain or extractions. He reports brushing his teeth once daily and does not use any interdental cleaning aids. On examination, there is a generalised accumulation of plaque and calculus.

The remaining maxillary teeth are 14, 13, 12, 11, 21, 22, 23, 24. All of these teeth exhibit Grade II to III mobility. Periodontal probing reveals generalised depths ranging from 7-9 mm, with bleeding on probing at all sites. Significant generalised gingival recession is also noted. The mandibular arch is fully dentate with signs of moderate generalised gingivitis.

The rest of the oral mucosa appears pink and healthy, with no suspicious lesions noted. The remaining maxillary teeth are free of active caries.

Dimitri Demetriou, a 62-year-old Greek-Australian man who owns a small cafe, presents for a consultation. His main concern is-
“My top teeth are loose and sore, and I can’t eat properly. I’m embarrassed to smile because I talk to customers all day.” Mr. Demetriou has a history of Type 2 diabetes, His most recent HbA1c reading was 7.8%. He has no known drug allergies. He is a non-smoker and consumes one to two glasses of wine with dinner. His dental attendance has been irregular, typically only for pain or extractions. He reports brushing his teeth once daily and does not use any interdental cleaning aids. On examination, there is a generalised accumulation of plaque and calculus.

The remaining maxillary teeth are 14, 13, 12, 11, 21, 22, 23, 24. All of these teeth exhibit Grade II to III mobility. Periodontal probing reveals generalised depths ranging from 7-9 mm, with bleeding on probing at all sites. Significant generalised gingival recession is also noted. The mandibular arch is fully dentate with signs of moderate generalised gingivitis.

The rest of the oral mucosa appears pink and healthy, with no suspicious lesions noted. The remaining maxillary teeth are free of active caries.

Dimitri Demetriou, a 62-year-old Greek-Australian man who owns a small cafe, presents for a consultation. His main concern is-
“My top teeth are loose and sore, and I can’t eat properly. I’m embarrassed to smile because I talk to customers all day.” Mr. Demetriou has a history of Type 2 diabetes, His most recent HbA1c reading was 7.8%. He has no known drug allergies. He is a non-smoker and consumes one to two glasses of wine with dinner. His dental attendance has been irregular, typically only for pain or extractions. He reports brushing his teeth once daily and does not use any interdental cleaning aids. On examination, there is a generalised accumulation of plaque and calculus.

The remaining maxillary teeth are 14, 13, 12, 11, 21, 22, 23, 24. All of these teeth exhibit Grade II to III mobility. Periodontal probing reveals generalised depths ranging from 7-9 mm, with bleeding on probing at all sites. Significant generalised gingival recession is also noted. The mandibular arch is fully dentate with signs of moderate generalised gingivitis.

The rest of the oral mucosa appears pink and healthy, with no suspicious lesions noted. The remaining maxillary teeth are free of active caries.

Dimitri Demetriou, a 62-year-old Greek-Australian man who owns a small cafe, presents for a consultation. His main concern is-
“My top teeth are loose and sore, and I can’t eat properly. I’m embarrassed to smile because I talk to customers all day.” Mr. Demetriou has a history of Type 2 diabetes, His most recent HbA1c reading was 7.8%. He has no known drug allergies. He is a non-smoker and consumes one to two glasses of wine with dinner. His dental attendance has been irregular, typically only for pain or extractions. He reports brushing his teeth once daily and does not use any interdental cleaning aids. On examination, there is a generalised accumulation of plaque and calculus.

The remaining maxillary teeth are 14, 13, 12, 11, 21, 22, 23, 24. All of these teeth exhibit Grade II to III mobility. Periodontal probing reveals generalised depths ranging from 7-9 mm, with bleeding on probing at all sites. Significant generalised gingival recession is also noted. The mandibular arch is fully dentate with signs of moderate generalised gingivitis.

The rest of the oral mucosa appears pink and healthy, with no suspicious lesions noted. The remaining maxillary teeth are free of active caries.

Fatima Sleiman, a 32-year-old Lebanese-Australian woman, brings her 6-year-old daughter, Layla, to your clinic for the first time, stating the reason for the visit is a “sore tooth on the bottom right”. Fatima appears anxious and provides brief, dismissive answers to questions. Layla is quiet, withdrawn, and avoids eye contact throughout the appointment.

Fatima reports that Layla has no significant medical history, takes no regular medications, and has no known allergies. When asked about the history of the complaint, Fatima states the pain started a few days ago and that Layla “eats too many sweets”. She also mentions Layla “fell off her scooter a few days ago” but is vague about the details of the incident. The family has recently moved to the area. Extra-oral examination reveals a healing, yellowish-green bruise on Layla’s right cheek, overlying the angle of the mandible. A small, faded scar is noted on her left forehead. Layla flinches and pulls away when the right side of her face is gently palpated. Intra-oral examination shows generalised poor oral hygiene with heavy plaque accumulation. Multiple teeth have carious lesions. Tooth 85 is grossly decayed with only root remnants visible, surrounded by localised gingival swelling and erythema. Tooth 46 has a deep occlusal carious lesion, and tooth 61 has a fractured incisal edge. Layla reports tenderness to percussion on tooth 85.

Fatima Sleiman, a 32-year-old Lebanese-Australian woman, brings her 6-year-old daughter, Layla, to your clinic for the first time, stating the reason for the visit is a “sore tooth on the bottom right”. Fatima appears anxious and provides brief, dismissive answers to questions. Layla is quiet, withdrawn, and avoids eye contact throughout the appointment.Fatima reports that Layla has no significant medical history, takes no regular medications, and has no known allergies. When asked about the history of the complaint, Fatima states the pain started a few days ago and that Layla “eats too many sweets”. She also mentions Layla “fell off her scooter a few days ago” but is vague about the details of the incident. The family has recently moved to the area. Extra-oral examination reveals a healing, yellowish-green bruise on Layla’s right cheek, overlying the angle of the mandible. A small, faded scar is noted on her left forehead. Layla flinches and pulls away when the right side of her face is gently palpated. Intra-oral examination shows generalised poor oral hygiene with heavy plaque accumulation. Multiple teeth have carious lesions. Tooth 85 is grossly decayed with only root remnants visible, surrounded by localised gingival swelling and erythema. Tooth 46 has a deep occlusal carious lesion, and tooth 61 has a fractured incisal edge. Layla reports tenderness to percussion on tooth 85.

Fatima Sleiman, a 32-year-old Lebanese-Australian woman, brings her 6-year-old daughter, Layla, to your clinic for the first time, stating the reason for the visit is a “sore tooth on the bottom right”. Fatima appears anxious and provides brief, dismissive answers to questions. Layla is quiet, withdrawn, and avoids eye contact throughout the appointment.

Fatima reports that Layla has no significant medical history, takes no regular medications, and has no known allergies. When asked about the history of the complaint, Fatima states the pain started a few days ago and that Layla “eats too many sweets”. She also mentions Layla “fell off her scooter a few days ago” but is vague about the details of the incident. The family has recently moved to the area. Extra-oral examination reveals a healing, yellowish-green bruise on Layla’s right cheek, overlying the angle of the mandible. A small, faded scar is noted on her left forehead. Layla flinches and pulls away when the right side of her face is gently palpated. Intra-oral examination shows generalised poor oral hygiene with heavy plaque accumulation. Multiple teeth have carious lesions. Tooth 85 is grossly decayed with only root remnants visible, surrounded by localised gingival swelling and erythema. Tooth 46 has a deep occlusal carious lesion, and tooth 61 has a fractured incisal edge. Layla reports tenderness to percussion on tooth 85.

Fatima Sleiman, a 32-year-old Lebanese-Australian woman, brings her 6-year-old daughter, Layla, to your clinic for the first time, stating the reason for the visit is a “sore tooth on the bottom right”. Fatima appears anxious and provides brief, dismissive answers to questions. Layla is quiet, withdrawn, and avoids eye contact throughout the appointment.

Fatima reports that Layla has no significant medical history, takes no regular medications, and has no known allergies. When asked about the history of the complaint, Fatima states the pain started a few days ago and that Layla “eats too many sweets”. She also mentions Layla “fell off her scooter a few days ago” but is vague about the details of the incident. The family has recently moved to the area. Extra-oral examination reveals a healing, yellowish-green bruise on Layla’s right cheek, overlying the angle of the mandible. A small, faded scar is noted on her left forehead. Layla flinches and pulls away when the right side of her face is gently palpated. Intra-oral examination shows generalised poor oral hygiene with heavy plaque accumulation. Multiple teeth have carious lesions. Tooth 85 is grossly decayed with only root remnants visible, surrounded by localised gingival swelling and erythema. Tooth 46 has a deep occlusal carious lesion, and tooth 61 has a fractured incisal edge. Layla reports tenderness to percussion on tooth 85.

Fatima Sleiman, a 32-year-old Lebanese-Australian woman, brings her 6-year-old daughter, Layla, to your clinic for the first time, stating the reason for the visit is a “sore tooth on the bottom right”. Fatima appears anxious and provides brief, dismissive answers to questions. Layla is quiet, withdrawn, and avoids eye contact throughout the appointment.

Fatima reports that Layla has no significant medical history, takes no regular medications, and has no known allergies. When asked about the history of the complaint, Fatima states the pain started a few days ago and that Layla “eats too many sweets”. She also mentions Layla “fell off her scooter a few days ago” but is vague about the details of the incident. The family has recently moved to the area. Extra-oral examination reveals a healing, yellowish-green bruise on Layla’s right cheek, overlying the angle of the mandible. A small, faded scar is noted on her left forehead. Layla flinches and pulls away when the right side of her face is gently palpated. Intra-oral examination shows generalised poor oral hygiene with heavy plaque accumulation. Multiple teeth have carious lesions. Tooth 85 is grossly decayed with only root remnants visible, surrounded by localised gingival swelling and erythema. Tooth 46 has a deep occlusal carious lesion, and tooth 61 has a fractured incisal edge. Layla reports tenderness to percussion on tooth 85.

Ernie Anderson, a 48-year-old Aboriginal Australian man, presents for a direct composite restoration on tooth 13, which has a fracture.
He is anxious about the procedure but is keen to save the tooth. His medical history includes hypertension, managed with amlodipine 5 mg daily, and seasonal rhinitis, for which he occasionally uses an over-the-counter antihistamine. He reports no known drug allergies. His baseline vital signs are a blood pressure of 135/85mmHg and a pulse of 78 beats per minute. Following a negative aspiration, a single 2.2 mL cartridge of 2% lignocaine with 1:80,000 adrenaline is administered via buccal infiltration.

Approximately two minutes after the injection, Mr. Anderson states he feels dizzy and nauseous. He appears flushed and complains of a ‘lump in his throat’. His breathing becomes audibly high-pitched. A quick examination reveals a blotchy, raised red rash developing on his neck and upper chest. His blood pressure, measured with the automated cuff, is now 90/60 mmHg, and his pulse is 120 beats per minute. He remains conscious and responsive but is increasingly distressed.

Ernie Anderson, a 48-year-old Aboriginal Australian man, presents for a direct composite restoration on tooth 13, which has a fracture.
He is anxious about the procedure but is keen to save the tooth. His medical history includes hypertension, managed with amlodipine 5 mg daily, and seasonal rhinitis, for which he occasionally uses an over-the-counter antihistamine. He reports no known drug allergies. His baseline vital signs are a blood pressure of 135/85mmHg and a pulse of 78 beats per minute. Following a negative aspiration, a single 2.2 mL cartridge of 2% lignocaine with 1:80,000 adrenaline is administered via buccal infiltration.

Approximately two minutes after the injection, Mr. Anderson states he feels dizzy and nauseous. He appears flushed and complains of a ‘lump in his throat’. His breathing becomes audibly high-pitched. A quick examination reveals a blotchy, raised red rash developing on his neck and upper chest. His blood pressure, measured with the automated cuff, is now 90/60 mmHg, and his pulse is 120 beats per minute. He remains conscious and responsive but is increasingly distressed.

Ernie Anderson, a 48-year-old Aboriginal Australian man, presents for a direct composite restoration on tooth 13, which has a fracture.
He is anxious about the procedure but is keen to save the tooth. His medical history includes hypertension, managed with amlodipine 5 mg daily, and seasonal rhinitis, for which he occasionally uses an over-the-counter antihistamine. He reports no known drug allergies. His baseline vital signs are a blood pressure of 135/85mmHg and a pulse of 78 beats per minute. Following a negative aspiration, a single 2.2 mL cartridge of 2% lignocaine with 1:80,000 adrenaline is administered via buccal infiltration.

Approximately two minutes after the injection, Mr. Anderson states he feels dizzy and nauseous. He appears flushed and complains of a ‘lump in his throat’. His breathing becomes audibly high-pitched. A quick examination reveals a blotchy, raised red rash developing on his neck and upper chest. His blood pressure, measured with the automated cuff, is now 90/60 mmHg, and his pulse is 120 beats per minute. He remains conscious and responsive but is increasingly distressed.

Ernie Anderson, a 48-year-old Aboriginal Australian man, presents for a direct composite restoration on tooth 13, which has a fracture.
He is anxious about the procedure but is keen to save the tooth. His medical history includes hypertension, managed with amlodipine 5 mg daily, and seasonal rhinitis, for which he occasionally uses an over-the-counter antihistamine. He reports no known drug allergies. His baseline vital signs are a blood pressure of 135/85mmHg and a pulse of 78 beats per minute. Following a negative aspiration, a single 2.2 mL cartridge of 2% lignocaine with 1:80,000 adrenaline is administered via buccal infiltration.

Approximately two minutes after the injection, Mr. Anderson states he feels dizzy and nauseous. He appears flushed and complains of a ‘lump in his throat’. His breathing becomes audibly high-pitched. A quick examination reveals a blotchy, raised red rash developing on his neck and upper chest. His blood pressure, measured with the automated cuff, is now 90/60 mmHg, and his pulse is 120 beats per minute. He remains conscious and responsive but is increasingly distressed.

Ernie Anderson, a 48-year-old Aboriginal Australian man, presents for a direct composite restoration on tooth 13, which has a fracture.
He is anxious about the procedure but is keen to save the tooth. His medical history includes hypertension, managed with amlodipine 5 mg daily, and seasonal rhinitis, for which he occasionally uses an over-the-counter antihistamine. He reports no known drug allergies. His baseline vital signs are a blood pressure of 135/85mmHg and a pulse of 78 beats per minute. Following a negative aspiration, a single 2.2 mL cartridge of 2% lignocaine with 1:80,000 adrenaline is administered via buccal infiltration.

Approximately two minutes after the injection, Mr. Anderson states he feels dizzy and nauseous. He appears flushed and complains of a ‘lump in his throat’. His breathing becomes audibly high-pitched. A quick examination reveals a blotchy, raised red rash developing on his neck and upper chest. His blood pressure, measured with the automated cuff, is now 90/60 mmHg, and his pulse is 120 beats per minute. He remains conscious and responsive but is increasingly distressed.

Marco Conti, a 5-year-old Italian-Australian boy, is brought to the clinic by his mother. She is concerned because his upper front teeth “look yellow and are breaking apart.” She also reports that Marco has become increasingly fussy with his food over the past few months, often refusing to eat cold items like yoghurt or ice cream. Marco has a history of poorly controlled asthma, requiring frequent use of a salbutamol inhaler, typically 4-5 times per week, in addition to a daily fluticasone propionate preventer. His mother describes Marco as a ‘grazer,’ who frequently consumes fruit pouches and crackers between meals. He often carries a sippy cup containing diluted fruit juice,which he sips throughout the day. The family lives in a regional area without community water fluoridation. His mother admits that toothbrushing is a daily struggle and is usually performed once before bed.

Clinical examination shows an anxious but cooperative child.
– There is a generalised, soft,white plaque accumulation on most teeth, with associated mild gingival inflammation.
– The maxillary primary incisors, 51 and 61, have large cavities with visible, soft, light-brown dentine and fractured incisal edges.
– Teeth 52 and 62 exhibit opaque, creamy-brown discolourations on the labial surfaces near the gingival margin, with some localised enamel breakdown.
– The occlusal surfaces of the primary molars have deep fissures, and several of these show areas of soft, light-brown dentine indicative of active caries.

Marco Conti, a 5-year-old Italian-Australian boy, is brought to the clinic by his mother. She is concerned because his upper front teeth “look yellow and are breaking apart.” She also reports that Marco has become increasingly fussy with his food over the past few months, often refusing to eat cold items like yoghurt or ice cream. Marco has a history of poorly controlled asthma, requiring frequent use of a salbutamol inhaler, typically 4-5 times per week, in addition to a daily fluticasone propionate preventer. His mother describes Marco as a ‘grazer,’ who frequently consumes fruit pouches and crackers between meals. He often carries a sippy cup containing diluted fruit juice,which he sips throughout the day. The family lives in a regional area without community water fluoridation. His mother admits that toothbrushing is a daily struggle and is usually performed once before bed.

Clinical examination shows an anxious but cooperative child.
– There is a generalised, soft,white plaque accumulation on most teeth, with associated mild gingival inflammation.
– The maxillary primary incisors, 51 and 61, have large cavities with visible, soft, light-brown dentine and fractured incisal edges.
– Teeth 52 and 62 exhibit opaque, creamy-brown discolourations on the labial surfaces near the gingival margin, with some localised enamel breakdown.
– The occlusal surfaces of the primary molars have deep fissures, and several of these show areas of soft, light-brown dentine indicative of active caries.

Marco Conti, a 5-year-old Italian-Australian boy, is brought to the clinic by his mother. She is concerned because his upper front teeth “look yellow and are breaking apart.” She also reports that Marco has become increasingly fussy with his food over the past few months, often refusing to eat cold items like yoghurt or ice cream. Marco has a history of poorly controlled asthma, requiring frequent use of a salbutamol inhaler, typically 4-5 times per week, in addition to a daily fluticasone propionate preventer. His mother describes Marco as a ‘grazer,’ who frequently consumes fruit pouches and crackers between meals. He often carries a sippy cup containing diluted fruit juice,which he sips throughout the day. The family lives in a regional area without community water fluoridation. His mother admits that toothbrushing is a daily struggle and is usually performed once before bed.

Clinical examination shows an anxious but cooperative child.
– There is a generalised, soft,white plaque accumulation on most teeth, with associated mild gingival inflammation.
– The maxillary primary incisors, 51 and 61, have large cavities with visible, soft, light-brown dentine and fractured incisal edges.
– Teeth 52 and 62 exhibit opaque, creamy-brown discolourations on the labial surfaces near the gingival margin, with some localised enamel breakdown.
– The occlusal surfaces of the primary molars have deep fissures, and several of these show areas of soft, light-brown dentine indicative of active caries.

Marco Conti, a 5-year-old Italian-Australian boy, is brought to the clinic by his mother. She is concerned because his upper front teeth “look yellow and are breaking apart.” She also reports that Marco has become increasingly fussy with his food over the past few months, often refusing to eat cold items like yoghurt or ice cream. Marco has a history of poorly controlled asthma, requiring frequent use of a salbutamol inhaler, typically 4-5 times per week, in addition to a daily fluticasone propionate preventer. His mother describes Marco as a ‘grazer,’ who frequently consumes fruit pouches and crackers between meals. He often carries a sippy cup containing diluted fruit juice,which he sips throughout the day. The family lives in a regional area without community water fluoridation. His mother admits that toothbrushing is a daily struggle and is usually performed once before bed.

Clinical examination shows an anxious but cooperative child.
– There is a generalised, soft,white plaque accumulation on most teeth, with associated mild gingival inflammation.
– The maxillary primary incisors, 51 and 61, have large cavities with visible, soft, light-brown dentine and fractured incisal edges.
– Teeth 52 and 62 exhibit opaque, creamy-brown discolourations on the labial surfaces near the gingival margin, with some localised enamel breakdown.
– The occlusal surfaces of the primary molars have deep fissures, and several of these show areas of soft, light-brown dentine indicative of active caries.

Marco Conti, a 5-year-old Italian-Australian boy, is brought to the clinic by his mother. She is concerned because his upper front teeth “look yellow and are breaking apart.” She also reports that Marco has become increasingly fussy with his food over the past few months, often refusing to eat cold items like yoghurt or ice cream. Marco has a history of poorly controlled asthma, requiring frequent use of a salbutamol inhaler, typically 4-5 times per week, in addition to a daily fluticasone propionate preventer. His mother describes Marco as a ‘grazer,’ who frequently consumes fruit pouches and crackers between meals. He often carries a sippy cup containing diluted fruit juice,which he sips throughout the day. The family lives in a regional area without community water fluoridation. His mother admits that toothbrushing is a daily struggle and is usually performed once before bed.

Clinical examination shows an anxious but cooperative child.
– There is a generalised, soft,white plaque accumulation on most teeth, with associated mild gingival inflammation.
– The maxillary primary incisors, 51 and 61, have large cavities with visible, soft, light-brown dentine and fractured incisal edges.
– Teeth 52 and 62 exhibit opaque, creamy-brown discolourations on the labial surfaces near the gingival margin, with some localised enamel breakdown.
– The occlusal surfaces of the primary molars have deep fissures, and several of these show areas of soft, light-brown dentine indicative of active caries.

Rajesh Patel, a 48-year-old Indian-Australian software developer, presents for a check-up. His chief complaint is that his “gums bleed when brushing” and his wife has commented on his “bad breath” recently. He has not seen a dentist in several years.
Mr. Patel’s medical history is significant for type 2 diabetes, His most recent HbA1c reading three months ago was 7.5%. He reports no known drug allergies and is a lifelong non-smoker. He works from home and admits to frequent snacking on biscuits and drinking several cups of sugary tea throughout the day.

Intraoral examination reveals generalised moderate plaque and calculus deposits. The gingivae are erythematous and oedematous, with generalised bleeding on probing. Periodontal probing reveals generalised pocket depths of 5-7mm. Tooth 46 has an 8mm pocket on the buccal aspect, and a Nabers probe can be passed horizontally through the furcation area. Tooth 46 also exhibits Grade 1 mobility. There is no suppuration on palpation of the gingivae and no localised swelling.

A panoramic radiograph and posterior bitewings show generalised horizontal bone loss, with alveolar bone levels located at the middle third of the roots of most posterior teeth. A distinct triangular radiolucency is visible in the furcation area of tooth 46.

Rajesh Patel, a 48-year-old Indian-Australian software developer, presents for a check-up. His chief complaint is that his “gums bleed when brushing” and his wife has commented on his “bad breath” recently. He has not seen a dentist in several years.
Mr. Patel’s medical history is significant for type 2 diabetes, His most recent HbA1c reading three months ago was 7.5%. He reports no known drug allergies and is a lifelong non-smoker. He works from home and admits to frequent snacking on biscuits and drinking several cups of sugary tea throughout the day.

Intraoral examination reveals generalised moderate plaque and calculus deposits. The gingivae are erythematous and oedematous, with generalised bleeding on probing. Periodontal probing reveals generalised pocket depths of 5-7mm. Tooth 46 has an 8mm pocket on the buccal aspect, and a Nabers probe can be passed horizontally through the furcation area. Tooth 46 also exhibits Grade 1 mobility. There is no suppuration on palpation of the gingivae and no localised swelling.

A panoramic radiograph and posterior bitewings show generalised horizontal bone loss, with alveolar bone levels located at the middle third of the roots of most posterior teeth. A distinct triangular radiolucency is visible in the furcation area of tooth 46.

Rajesh Patel, a 48-year-old Indian-Australian software developer, presents for a check-up. His chief complaint is that his “gums bleed when brushing” and his wife has commented on his “bad breath” recently. He has not seen a dentist in several years.
Mr. Patel’s medical history is significant for type 2 diabetes, His most recent HbA1c reading three months ago was 7.5%. He reports no known drug allergies and is a lifelong non-smoker. He works from home and admits to frequent snacking on biscuits and drinking several cups of sugary tea throughout the day.

Intraoral examination reveals generalised moderate plaque and calculus deposits. The gingivae are erythematous and oedematous, with generalised bleeding on probing. Periodontal probing reveals generalised pocket depths of 5-7mm. Tooth 46 has an 8mm pocket on the buccal aspect, and a Nabers probe can be passed horizontally through the furcation area. Tooth 46 also exhibits Grade 1 mobility. There is no suppuration on palpation of the gingivae and no localised swelling.

A panoramic radiograph and posterior bitewings show generalised horizontal bone loss, with alveolar bone levels located at the middle third of the roots of most posterior teeth. A distinct triangular radiolucency is visible in the furcation area of tooth 46.

Rajesh Patel, a 48-year-old Indian-Australian software developer, presents for a check-up. His chief complaint is that his “gums bleed when brushing” and his wife has commented on his “bad breath” recently. He has not seen a dentist in several years.
Mr. Patel’s medical history is significant for type 2 diabetes, His most recent HbA1c reading three months ago was 7.5%. He reports no known drug allergies and is a lifelong non-smoker. He works from home and admits to frequent snacking on biscuits and drinking several cups of sugary tea throughout the day.

Intraoral examination reveals generalised moderate plaque and calculus deposits. The gingivae are erythematous and oedematous, with generalised bleeding on probing. Periodontal probing reveals generalised pocket depths of 5-7mm. Tooth 46 has an 8mm pocket on the buccal aspect, and a Nabers probe can be passed horizontally through the furcation area. Tooth 46 also exhibits Grade 1 mobility. There is no suppuration on palpation of the gingivae and no localised swelling.

A panoramic radiograph and posterior bitewings show generalised horizontal bone loss, with alveolar bone levels located at the middle third of the roots of most posterior teeth. A distinct triangular radiolucency is visible in the furcation area of tooth 46.

Rajesh Patel, a 48-year-old Indian-Australian software developer, presents for a check-up. His chief complaint is that his “gums bleed when brushing” and his wife has commented on his “bad breath” recently. He has not seen a dentist in several years.
Mr. Patel’s medical history is significant for type 2 diabetes, His most recent HbA1c reading three months ago was 7.5%. He reports no known drug allergies and is a lifelong non-smoker. He works from home and admits to frequent snacking on biscuits and drinking several cups of sugary tea throughout the day.

Intraoral examination reveals generalised moderate plaque and calculus deposits. The gingivae are erythematous and oedematous, with generalised bleeding on probing. Periodontal probing reveals generalised pocket depths of 5-7mm. Tooth 46 has an 8mm pocket on the buccal aspect, and a Nabers probe can be passed horizontally through the furcation area. Tooth 46 also exhibits Grade 1 mobility. There is no suppuration on palpation of the gingivae and no localised swelling.

A panoramic radiograph and posterior bitewings show generalised horizontal bone loss, with alveolar bone levels located at the middle third of the roots of most posterior teeth. A distinct triangular radiolucency is visible in the furcation area of tooth 46.

Amara Osei, a 38-year-old African-Australian woman, presents for an unscheduled follow-up appointment. One week ago, she underwent a surgical extraction of tooth 18 at your clinic. She reports that for the past three days, the pain from the extraction site has been steadily increasing and is no longer managed by over-the-counter paracetamol. She also describes a ‘horrible taste’ and bad breath.
Ms.Osei’s medical history is significant for well-controlled hypertension, for which she takes ramipril 5 mg daily. Her records clearly document a severe immediate hypersensitivity reaction (anaphylaxis) to penicillin in the past. She is a non-smoker and works as an accountant.

Clinical examination reveals mild extraoral swelling. Intraorally, the soft tissues surrounding the extraction site of tooth 18 are erythematous and oedematous. Gentle pressure on the buccal gingiva expresses a small amount of purulent discharge from the socket. The socket itself contains a disintegrating, malodorous clot; however, no bone is visibly exposed. The area is extremely tender to palpation. Her temperature is recorded as 37.9°C.

A subsequent internal practice review of the day of Ms. Osei’ssurgery shows that a new junior dental assistant, who had been
employed for two weeks, was tasked with reprocessing the surgical instrument kit used for the procedure. The assistant had recently begun performing instrument reprocessing duties independently and was still becoming familiar with the clinic’s established cleaning and preparation protocols prior to sterilisation.

Amara Osei, a 38-year-old African-Australian woman, presents for an unscheduled follow-up appointment. One week ago, she underwent a surgical extraction of tooth 18 at your clinic. She reports that for the past three days, the pain from the extraction site has been steadily increasing and is no longer managed by over-the-counter paracetamol. She also describes a ‘horrible taste’ and bad breath.
Ms.Osei’s medical history is significant for well-controlled hypertension, for which she takes ramipril 5 mg daily. Her records clearly document a severe immediate hypersensitivity reaction (anaphylaxis) to penicillin in the past. She is a non-smoker and works as an accountant.

Clinical examination reveals mild extraoral swelling. Intraorally, the soft tissues surrounding the extraction site of tooth 18 are erythematous and oedematous. Gentle pressure on the buccal gingiva expresses a small amount of purulent discharge from the socket. The socket itself contains a disintegrating, malodorous clot; however, no bone is visibly exposed. The area is extremely tender to palpation. Her temperature is recorded as 37.9°C.

A subsequent internal practice review of the day of Ms. Osei’ssurgery shows that a new junior dental assistant, who had been
employed for two weeks, was tasked with reprocessing the surgical instrument kit used for the procedure. The assistant had recently begun performing instrument reprocessing duties independently and was still becoming familiar with the clinic’s established cleaning and preparation protocols prior to sterilisation.

Amara Osei, a 38-year-old African-Australian woman, presents for an unscheduled follow-up appointment. One week ago, she underwent a surgical extraction of tooth 18 at your clinic. She reports that for the past three days, the pain from the extraction site has been steadily increasing and is no longer managed by over-the-counter paracetamol. She also describes a ‘horrible taste’ and bad breath.
Ms.Osei’s medical history is significant for well-controlled hypertension, for which she takes ramipril 5 mg daily. Her records clearly document a severe immediate hypersensitivity reaction (anaphylaxis) to penicillin in the past. She is a non-smoker and works as an accountant.

Clinical examination reveals mild extraoral swelling. Intraorally, the soft tissues surrounding the extraction site of tooth 18 are erythematous and oedematous. Gentle pressure on the buccal gingiva expresses a small amount of purulent discharge from the socket. The socket itself contains a disintegrating, malodorous clot; however, no bone is visibly exposed. The area is extremely tender to palpation. Her temperature is recorded as 37.9°C.

A subsequent internal practice review of the day of Ms. Osei’ssurgery shows that a new junior dental assistant, who had been
employed for two weeks, was tasked with reprocessing the surgical instrument kit used for the procedure. The assistant had recently begun performing instrument reprocessing duties independently and was still becoming familiar with the clinic’s established cleaning and preparation protocols prior to sterilisation.

Amara Osei, a 38-year-old African-Australian woman, presents for an unscheduled follow-up appointment. One week ago, she underwent a surgical extraction of tooth 18 at your clinic. She reports that for the past three days, the pain from the extraction site has been steadily increasing and is no longer managed by over-the-counter paracetamol. She also describes a ‘horrible taste’ and bad breath.
Ms.Osei’s medical history is significant for well-controlled hypertension, for which she takes ramipril 5 mg daily. Her records clearly document a severe immediate hypersensitivity reaction (anaphylaxis) to penicillin in the past. She is a non-smoker and works as an accountant.

Clinical examination reveals mild extraoral swelling. Intraorally, the soft tissues surrounding the extraction site of tooth 18 are erythematous and oedematous. Gentle pressure on the buccal gingiva expresses a small amount of purulent discharge from the socket. The socket itself contains a disintegrating, malodorous clot; however, no bone is visibly exposed. The area is extremely tender to palpation. Her temperature is recorded as 37.9°C.

A subsequent internal practice review of the day of Ms. Osei’ssurgery shows that a new junior dental assistant, who had been
employed for two weeks, was tasked with reprocessing the surgical instrument kit used for the procedure. The assistant had recently begun performing instrument reprocessing duties independently and was still becoming familiar with the clinic’s established cleaning and preparation protocols prior to sterilisation.

Amara Osei, a 38-year-old African-Australian woman, presents for an unscheduled follow-up appointment. One week ago, she underwent a surgical extraction of tooth 18 at your clinic. She reports that for the past three days, the pain from the extraction site has been steadily increasing and is no longer managed by over-the-counter paracetamol. She also describes a ‘horrible taste’ and bad breath.
Ms.Osei’s medical history is significant for well-controlled hypertension, for which she takes ramipril 5 mg daily. Her records clearly document a severe immediate hypersensitivity reaction (anaphylaxis) to penicillin in the past. She is a non-smoker and works as an accountant.Clinical examination reveals mild extraoral swelling. Intraorally, the soft tissues surrounding the extraction site of tooth 18 are erythematous and oedematous. Gentle pressure on the buccal gingiva expresses a small amount of purulent discharge from the socket. The socket itself contains a disintegrating, malodorous clot; however, no bone is visibly exposed. The area is extremely tender to palpation. Her temperature is recorded as 37.9°C.

A subsequent internal practice review of the day of Ms. Osei’ssurgery shows that a new junior dental assistant, who had been
employed for two weeks, was tasked with reprocessing the surgical instrument kit used for the procedure. The assistant had recently begun performing instrument reprocessing duties independently and was still becoming familiar with the clinic’s established cleaning and preparation protocols prior to sterilisation.

A 22-year-old male university student, Ji-Hoon Kang, presents for an emergency appointment. His chief complaint is a severe, spontaneous, throbbing pain in an upper left back tooth that started two days ago. The pain is exacerbated by cold drinks and has been waking him from sleep. He reports being ‘terrified’ of dental procedures and has avoided routine check-ups for several years due to his fear.

His medical history reveals Generalized anxiety disorder (GAD) & his general medical practitioner has also prescribed diazepam 5mg for him to take as needed during panic attacks, which he last used a week ago. He reports no known drug allergies. He mentions feeling particularly stressed due to upcoming university examinations.

Extraoral examination is unremarkable, with no facial swelling or lymphadenopathy. Intraorally, there is generalised plaque accumulation. Tooth 26 has a large, multi-surface amalgam restoration with visible marginal breakdown. The tooth is tender to percussion. Pulp sensibility testing with a cold stimulus on tooth 26 elicits a sharp, painful response that lingers for approximately 30 seconds after the stimulus is removed. Adjacent and contralateral teeth respond within normal limits. There is no palpable swelling in the buccal sulcus and no sinus tract is visible.

A 22-year-old male university student, Ji-Hoon Kang, presents for an emergency appointment. His chief complaint is a severe, spontaneous, throbbing pain in an upper left back tooth that started two days ago. The pain is exacerbated by cold drinks and has been waking him from sleep. He reports being ‘terrified’ of dental procedures and has avoided routine check-ups for several years due to his fear.

His medical history reveals Generalized anxiety disorder (GAD) & his general medical practitioner has also prescribed diazepam 5mg for him to take as needed during panic attacks, which he last used a week ago. He reports no known drug allergies. He mentions feeling particularly stressed due to upcoming university examinations.

Extraoral examination is unremarkable, with no facial swelling or lymphadenopathy. Intraorally, there is generalised plaque accumulation. Tooth 26 has a large, multi-surface amalgam restoration with visible marginal breakdown. The tooth is tender to percussion. Pulp sensibility testing with a cold stimulus on tooth 26 elicits a sharp, painful response that lingers for approximately 30 seconds after the stimulus is removed. Adjacent and contralateral teeth respond within normal limits. There is no palpable swelling in the buccal sulcus and no sinus tract is visible.

A 22-year-old male university student, Ji-Hoon Kang, presents for an emergency appointment. His chief complaint is a severe, spontaneous, throbbing pain in an upper left back tooth that started two days ago. The pain is exacerbated by cold drinks and has been waking him from sleep. He reports being ‘terrified’ of dental procedures and has avoided routine check-ups for several years due to his fear.

His medical history reveals Generalized anxiety disorder (GAD) & his general medical practitioner has also prescribed diazepam 5mg for him to take as needed during panic attacks, which he last used a week ago. He reports no known drug allergies. He mentions feeling particularly stressed due to upcoming university examinations.

Extraoral examination is unremarkable, with no facial swelling or lymphadenopathy. Intraorally, there is generalised plaque accumulation. Tooth 26 has a large, multi-surface amalgam restoration with visible marginal breakdown. The tooth is tender to percussion. Pulp sensibility testing with a cold stimulus on tooth 26 elicits a sharp, painful response that lingers for approximately 30 seconds after the stimulus is removed. Adjacent and contralateral teeth respond within normal limits. There is no palpable swelling in the buccal sulcus and no sinus tract is visible.

A 22-year-old male university student, Ji-Hoon Kang, presents for an emergency appointment. His chief complaint is a severe, spontaneous, throbbing pain in an upper left back tooth that started two days ago. The pain is exacerbated by cold drinks and has been waking him from sleep. He reports being ‘terrified’ of dental procedures and has avoided routine check-ups for several years due to his fear.

His medical history reveals Generalized anxiety disorder (GAD) & his general medical practitioner has also prescribed diazepam 5mg for him to take as needed during panic attacks, which he last used a week ago. He reports no known drug allergies. He mentions feeling particularly stressed due to upcoming university examinations.

Extraoral examination is unremarkable, with no facial swelling or lymphadenopathy. Intraorally, there is generalised plaque accumulation. Tooth 26 has a large, multi-surface amalgam restoration with visible marginal breakdown. The tooth is tender to percussion. Pulp sensibility testing with a cold stimulus on tooth 26 elicits a sharp, painful response that lingers for approximately 30 seconds after the stimulus is removed. Adjacent and contralateral teeth respond within normal limits. There is no palpable swelling in the buccal sulcus and no sinus tract is visible.

A 22-year-old male university student, Ji-Hoon Kang, presents for an emergency appointment. His chief complaint is a severe, spontaneous, throbbing pain in an upper left back tooth that started two days ago. The pain is exacerbated by cold drinks and has been waking him from sleep. He reports being ‘terrified’ of dental procedures and has avoided routine check-ups for several years due to his fear.

His medical history reveals Generalized anxiety disorder (GAD) & his general medical practitioner has also prescribed diazepam 5mg for him to take as needed during panic attacks, which he last used a week ago. He reports no known drug allergies. He mentions feeling particularly stressed due to upcoming university examinations.

Extraoral examination is unremarkable, with no facial swelling or lymphadenopathy. Intraorally, there is generalised plaque accumulation. Tooth 26 has a large, multi-surface amalgam restoration with visible marginal breakdown. The tooth is tender to percussion. Pulp sensibility testing with a cold stimulus on tooth 26 elicits a sharp, painful response that lingers for approximately 30 seconds after the stimulus is removed. Adjacent and contralateral teeth respond within normal limits. There is no palpable swelling in the buccal sulcus and no sinus tract is visible.