ADC Practice Question — Endodontic Considerations

If calcium hydroxide is chosen as the intracanal medicament, what is the recommended duration?

Dental trauma questions test protocol-level decisions — splint type, duration, follow-up timing — where one wrong detail means a wrong answer. This exam-level vignette tests your ability to work through clinical details and arrive at the correct management.

A 15-year-old's closed-apex replanted incisor is undergoing root canal treatment 12 days after replantation. The dentist debates which intracanal medicament to use and for how long. If calcium hydroxide is chosen as the intracanal medicament, what is the recommended duration?

A. At least 3 months to ensure complete disinfection of the root canal system before obturation
B. Up to 1 month, followed by root canal filling — prolonged use may increase root fracture risk
C. Indefinitely until radiographic resolution of any periapical radiolucency is confirmed present
D. Exactly 2 weeks — matching the splinting duration for consistency in the treatment timeline

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Sources cited

Therapeutic Guidelines v4 Odell's 3rd & 4th Ed IADT 2020 Code of Conduct CMS (Evans) Infection Control + more

Show the answer and cited explanation

Correct answer: B

IADT: 'Calcium hydroxide is recommended as an intracanal medicament for up to 1 month followed by root canal filling.' The time limit reflects evidence that long-term Ca(OH)2 may increase root fracture risk. SOURCE — Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Section 10

Source: Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Section 10

Remy's study tip — Trauma questions hinge on: tooth maturity (open vs closed apex), time out of mouth, storage medium, and fracture type.

Exam preparation FAQ

Should I memorise guidelines word-for-word for Endodontic Considerations?

Focus on decision points — when the guideline says X vs Y. The exam tests application, not recitation.

How are Endodontic Considerations questions structured in the ADC written exam?

ADC Endodontic Considerations questions present as clinical vignettes requiring management decisions. The correct answer is always traceable to a guideline source.

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