Turner Tooth — ORE Part 1 MCQ

Instant feedback + full explanation. One question, done properly.

EasyPaediatric DentistryTurner ToothORE Part 1

Following trauma or infection of a primary incisor, which permanent tooth is most likely to develop Turner's hypoplasia?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — A maxillary permanent incisor

The correct answer is B. Turner's hypoplasia is a localised enamel-development defect in a permanent tooth after trauma or infection affecting its primary predecessor. Primary maxillary incisors are especially commonly injured, and the developing permanent incisor lies close to the roots of its primary predecessor. Trauma—particularly intrusion—or infection can therefore disturb ameloblast function and produce hypoplasia or discolouration in the permanent incisor. The mandibular first molar and maxillary second molar do not have primary incisors as predecessors. A maxillary canine and mandibular second premolar may develop enamel defects after pathology in their own primary predecessors, but they are not the characteristic or most susceptible successor in the primary-incisor trauma scenario.

Reference: Caeiro-Villasenín L, et al. Developmental Dental Defects in Permanent Teeth Resulting from Trauma in Primary Dentition: A Systematic Review. 2022. https://pubmed.ncbi.nlm.nih.gov/35055575/