ADC Practice Question — Endodontic Considerations

1-year follow-up, Patient X's tooth has normal…

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

Two 14-year-olds present simultaneously. Patient X: closed apex incisor replanted by parent at scene 10 minutes post-injury (Group 1). Patient Y: closed apex incisor stored in saliva for 50 minutes after 8 minutes dry (Group 2). Both teeth are well-positioned. The dentist must plan both cases. At 1-year follow-up, Patient X's tooth has normal mobility, no symptoms, and normal lamina dura. Patient Y's tooth produces a metallic percussion sound, shows no mobility, and the PDL space is absent radiographically. Which statement correctly interprets BOTH outcomes?

A. Both outcomes are favourable — metallic sound simply indicates the tooth has healed firmly into the bone
B. X has a favourable outcome; Y has ankylosis-related replacement resorption which will eventually result in tooth loss
C. X has a favourable outcome; Y has infection-related inflammatory resorption requiring immediate root canal retreatment
D. Both outcomes are unfavourable — X should show pulp canal obliteration by now, and Y's ankylosis means the splint was too rigid

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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

Integration: (1) Apply Sec 11.2.1 favourable criteria to X — all met. (2) Apply Sec 11.3.1 unfavourable criteria to Y — metallic sound + absent PDL + no mobility = ankylosis. (3) Distinguish replacement from inflammatory resorption. (4) Know that favourable closed apex does NOT show obliteration (that's open apex). SOURCE — Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Sections 11.2.1, 11.3.1, 11

Source: Fouad AF et al. IADT Avulsion Guidelines, Dent Traumatol 2020;36:331-342, Section 11

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.

Every answer, traced to the source.

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1-year follow-up, Patient X's tooth has normal…

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