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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Show the answer and cited explanation
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
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