ADC Practice Question — Endodontic Considerations

a follow-up visit, which finding would confirm…

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.

An 8-year-old girl avulsed her upper right central incisor (open apex, incompletely developed root) 25 minutes ago. The tooth was stored in milk. After replantation, the dentist considers whether to start endodontic treatment. At a follow-up visit, which finding would confirm successful revascularization?

A. Complete absence of any radiographic change in the root canal space over 12 months
B. The tooth responds normally to electric pulp testing and cold sensitivity assessment
C. Root resorption has arrested and the tooth is now ankylosed with a metallic percussion tone
D. Continued root formation visible radiographically, with expected pulp canal obliteration

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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: D

IADT favorable outcome, open apex: 'Radiographic evidence of continued root formation and tooth eruption. Pulp canal obliteration is expected and can be recognized radiographically sometime during the first year. It is considered to be the mechanism by which the pulp heals after replantation.' SOURCE — Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Section 11.2.2

Source: Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Section 11.2.2

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

How should I prepare for Dental Traumatology in the ADC exam?

Build competence across all topics. The exam tests application of guidelines to clinical scenarios, not memorisation.

How do I approach an unfamiliar Endodontic Considerations vignette?

Extract key clinical data from the stem before reading options. There are usually 3–4 critical variables that determine the correct answer.

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