Primary Tooth Obturation Material — NDEB AFK MCQ

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EasyPaediatric DentistryPrimary Tooth Obturation MaterialNDEB AFK

Which of the following materials is used for obturation of primary teeth after pulpectomy and has the advantage of being resorbable?

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Correct answer: E — Zinc oxide eugenol paste (or iodoform-based paste like Vitapex)

ZOE paste or iodoform-based pastes (e.g., Vitapex — calcium hydroxide with iodoform in silicone oil) are the recommended root canal filling materials for primary teeth after pulpectomy because they are resorbable. As the primary root undergoes physiological resorption, the ZOE or iodoform paste resorbs along with it, not interfering with permanent tooth eruption. Non-resorbable materials (gutta percha, MTA) would persist in the tissues after root resorption and are contraindicated for primary tooth obturation.

Reference: Dean – McDonald and Avery's Dentistry for the Child and Adolescent, 11th ed., 2021