Which statement best describes canal morphology and obturation choices in primary teeth?

Study for the Pediatric Dentistry II Exam. Utilize flashcards and multiple choice questions with hints and explanations. Prepare thoroughly for your exam!

In primary teeth, the roots are designed to resorb as the permanent successor erupts, and they tend to converge toward the apex as resorption progresses. The root canal system can be irregular, reflecting the variable anatomy of deciduous teeth. Because we want the filling to disappear with natural root resorption and not interfere with eruption, obturation uses materials that are resorbable, such as zinc oxide–eugenol–based pastes. When the tooth is non-vital or pulpless, a pulpectomy is indicated to remove the diseased pulp and fill the canals with resorbable material that can resorb along with the roots. Non-resorbable fillings or leaving the canals unfilled would not accommodate natural resorption and could hinder eruption or cause other issues.