Free ADC Scenario-Based Questions and Answers — Questions and Answers
Question 1: Case scenario: <br> Alexander, a 64-year-old patient who is receiving warfarin as part of the management of his atrial fibrillation tells you that one of his lower right back teeth was restored three years ago by a dentist who has since retired from your practice. <br><br> The tooth is now occasionally sensitive to hot and cold. The clinical notes confirm the history and indicate that the tooth was restored using a resin composite material. <br><br> You obtain the periapical radiograph. <br><br> In addition to testing the pulp vitality with either a cold or an electric pulp tester, which of the following clinical tests or procedures would be the most appropriate to assist in making a diagnosis?
- Orthopantomogram (OPG)
- Bite-wing radiograph
- Percussion test (Correct answer)
- Crack test
- International normalized ratio (INR) test
Correct answer: Percussion test
Explanation: <br> The percussion test involves tapping the tooth to assess for tenderness or discomfort, which can indicate inflammation or infection in the surrounding tissues or the tooth itself. In Alexander's case, since the tooth is occasionally sensitive to hot and cold, performing a percussion test can help determine if there is any underlying issue such as periapical inflammation or pulpitis.
Question 2: Case scenario: <br> Alexander, a 64-year-old patient who is receiving warfarin as part of the management of his atrial fibrillation tells you that one of his lower right back teeth was restored three years ago by a dentist who has since retired from your practice. <br><br> The tooth is now occasionally sensitive to hot and cold. The clinical notes confirm the history and indicate that the tooth was restored using a resin composite material. <br><br> You obtain the periapical radiograph. <br><br> In this case, what is most likely to cause the failure of the class II composite restorations of the posterior teeth?
- Material is placed in increments because of the risk of leakage between the increments
- Glass-ionomer lining is used because of the risk that the lining will leach out over time
- Occlusal loads applied to the marginal ridge due to the flexure of the material
- Extended curing time due to greater shrinkage of the material
- The gingival margin on dentine because bonding under these conditions is unpredictable (Correct answer)
Correct answer: The gingival margin on dentine because bonding under these conditions is unpredictable
Explanation: <br> Bonding to dentin, especially near the gingival margin, can be challenging and unpredictable due to factors like moisture control and the presence of dentinal tubules, which may affect the integrity of the restoration over time. Therefore, it is the most likely cause of failure for class II composite restorations in posterior teeth.
Question 3: Case scenario: <br> Alexander, a 64-year-old patient who is receiving warfarin as part of the management of his atrial fibrillation tells you that one of his lower right back teeth was restored three years ago by a dentist who has since retired from your practice. <br><br> The tooth is now occasionally sensitive to hot and cold. The clinical notes confirm the history and indicate that the tooth was restored using a resin composite material. <br><br> You obtain the periapical radiograph. <br><br> Given the history and radiographic evidence, what is the best description of the sensitivity to hot and cold you would expect Alexander to report?
- Sharp, occurring once or twice per week and only with ice cream and hot coffee
- Sharp and relieved on removal of the hot or cold stimulus
- Dull and lingering for 1-2 minutes (Correct answer)
- Always present but worse after a hot or cold stimulus
- Worse in the morning
Correct answer: Dull and lingering for 1-2 minutes
Explanation: <br> "Dull and lingering for 1-2 minutes," is the most appropriate description of the sensitivity to hot and cold expected from Alexander. This description aligns with symptoms commonly associated with reversible pulpitis, indicating that the pulp is irritated but still viable.
Question 4: Case scenario: <br> Alexander, a 64-year-old patient who is receiving warfarin as part of the management of his atrial fibrillation tells you that one of his lower right back teeth was restored three years ago by a dentist who has since retired from your practice. <br><br> The tooth is now occasionally sensitive to hot and cold. The clinical notes confirm the history and indicate that the tooth was restored using a resin composite material. <br><br> You obtain the periapical radiograph. <br><br> You decided to extract the tooth and in planning for the procedure you find that the patient’s International normalized ratio (INR) is 2.4. What is the most appropriate action to take at this time?
- Proceed with the extraction and provide appropriate post-operative instructions (Correct answer)
- Proceed with the extraction and suggest that the patient stop their warfarin for 3 days
- Suggest that the patient stop their warfarin and commence taking 125mg aspirin before returning in 3 days to have the tooth removed
- Consult the patient’s cardiologist to discuss stopping their warfarin treatment
- Refer to patient to a consultant Oral and Maxillofacial Surgeon who is best placed to manage complex surgical problems such as this
Correct answer: Proceed with the extraction and provide appropriate post-operative instructions
Explanation: <br> Since the INR is within the acceptable range for dental extractions, proceeding with the extraction and providing appropriate post-operative instructions would be the most appropriate action.
Question 5: Case scenario: <br> Alexander, a 64-year-old patient who is receiving warfarin as part of the management of his atrial fibrillation tells you that one of his lower right back teeth was restored three years ago by a dentist who has since retired from your practice. <br><br> The tooth is now occasionally sensitive to hot and cold. The clinical notes confirm the history and indicate that the tooth was restored using a resin composite material. <br><br> You obtain the periapical radiograph. <br><br> After the removal of the 46, which prosthodontic options would be most appropriate for Alexander?
- Immediate placement and immediate restoration with a dental implant
- Replacement with an immediate removable partial denture
- Replacement with a removable partial denture after the extraction site has healed
- Replacement with a fixed bridge
- No replacement until the patient has had an opportunity to assess their functional and aesthetic concerns (Correct answer)
Correct answer: No replacement until the patient has had an opportunity to assess their functional and aesthetic concerns
Explanation: <br> Waiting for the patient to assess their functional and aesthetic concerns before deciding on a replacement option is appropriate. It allows the patient time to consider their preferences and needs before proceeding with any prosthodontic treatment.
Question 6: Case Scenario: <br> A patient presents with a fractured incisor tooth due to trauma. Which of the following is the most appropriate immediate management?
- Refer the patient to an orthodontist.
- Administer antibiotics and schedule for extraction.
- Assess for pulpal involvement and initiate root canal treatment if necessary. (Correct answer)
- Apply fluoride varnish and advise the patient to return in a week.
Correct answer: Assess for pulpal involvement and initiate root canal treatment if necessary.
Explanation: <br> Trauma to the tooth can lead to pulp exposure or injury. Assessing for pulpal involvement is crucial to determine if root canal treatment is needed to preserve the tooth.
Question 7: Case Scenario: <br> A patient complains of tooth sensitivity to colds and sweets. On examination, you notice a visible cavity in the tooth. What is the most appropriate initial treatment?
- Prescribe antibiotics.
- Perform a tooth extraction.
- Apply a desensitizing agent.
- Restore the tooth with a filling. (Correct answer)
Correct answer: Restore the tooth with a filling.
Explanation: <br> The visible cavity indicates dental caries. The most appropriate initial treatment is to restore the tooth with a filling to prevent further decay and alleviate sensitivity.
Question 8: Case Scenario: <br> During a routine dental examination, you notice redness and swelling around the gum line of a patient's tooth. What is the most likely diagnosis?
- Gingivitis (Correct answer)
- Periodontitis
- Dental caries
- Abscess
Correct answer: Gingivitis
Explanation: <br> Redness and swelling around the gum line are characteristic signs of gingivitis, which is inflammation of the gums. It is often caused by poor oral hygiene.
Question 9: Case Scenario: <br> A patient presents with pain and swelling in the lower right jaw. On examination, you notice a draining sinus tract near the mandibular molars. What is the most likely diagnosis?
- Periapical abscess (Correct answer)
- Periodontal abscess
- Temporomandibular joint disorder (TMJ)
- Mandibular fracture
Correct answer: Periapical abscess
Explanation: <br> The presence of a draining sinus tract near the mandibular molars indicates an infection originating from the tooth's apex, known as a periapical abscess.
Question 10: Case Scenario: <br> A patient reports a clicking sound and discomfort while opening their mouth. What is the most likely cause of this symptom?
- Temporomandibular joint (TMJ) disorder (Correct answer)
- Dental caries
- Periodontal disease
- Bruxism
Correct answer: Temporomandibular joint (TMJ) disorder
Explanation: <br> Clicking sounds and discomfort while opening the mouth are common symptoms of temporomandibular joint (TMJ) disorders, which affect the jaw joint and surrounding muscles.
Question 11: Case Scenario: <br> A patient presents with malalignment of the upper and lower teeth, causing difficulty in chewing and speech. What is the most appropriate treatment option?
- Extraction of the affected teeth
- Referral to an orthodontist for braces (Correct answer)
- Placement of dental crowns
- Administration of pain medication
Correct answer: Referral to an orthodontist for braces
Explanation: <br> Malalignment of teeth, also known as malocclusion, is best managed by an orthodontist who can assess the patient's bite and provide appropriate treatment such as braces.
Free ADC Scenario-Based Questions and Answers
Case scenario:
Alexander, a 64-year-old patient who is receiving warfarin as part of the management of his atrial fibrillation tells you that one of his lower right back teeth was restored three years ago by a dentist who has since retired from your practice.
The tooth is now occasionally sensitive to hot and cold.
The clinical notes confirm the history and indicate that the tooth was restored using a resin composite material.
You obtain the periapical radiograph.
In addition to testing the pulp vitality with either a cold or an electric pulp tester, which of the following clinical tests or procedures would be the most appropriate to assist in making a diagnosis?