Prepare for the American Board of Pediatric Dentistry Oral Boards. Utilize flashcards and multiple-choice questions with hints and explanations to ace your exam!

Multiple Choice

In a mature tooth with intrusion between 3 and 7 millimeters, root canal therapy should be completed within

When a mature tooth is intruded by 3–7 mm, the pulp is highly likely to lose vitality and become necrotic, and the surrounding tissues are stressed, increasing the danger of inflammatory root resorption. Because of this, completing endodontic therapy within a few weeks helps remove necrotic tissue, control infection, and reduce the risk of resorption, leading to a better long-term prognosis. Specifically, initiating root canal therapy within about three weeks provides a practical window that minimizes progression of necrosis and complications while allowing initial stabilization of the tooth after injury. Waiting longer—such as six weeks—tends to worsen outcomes due to ongoing infection and resorptive processes, whereas starting too early (within one or two weeks) may not change the need for therapy but isn’t the standard emphasized window for this injury pattern. Therefore, the recommended timing is within three weeks.

When a mature tooth is intruded by 3–7 mm, the pulp is highly likely to lose vitality and become necrotic, and the surrounding tissues are stressed, increasing the danger of inflammatory root resorption. Because of this, completing endodontic therapy within a few weeks helps remove necrotic tissue, control infection, and reduce the risk of resorption, leading to a better long-term prognosis.

Specifically, initiating root canal therapy within about three weeks provides a practical window that minimizes progression of necrosis and complications while allowing initial stabilization of the tooth after injury. Waiting longer—such as six weeks—tends to worsen outcomes due to ongoing infection and resorptive processes, whereas starting too early (within one or two weeks) may not change the need for therapy but isn’t the standard emphasized window for this injury pattern. Therefore, the recommended timing is within three weeks.