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Bimaxillary Proclination Ethnicity — ORE Part 1 MCQ

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ModerateOrthodonticsBimaxillary Proclination EthnicityORE Part 1

A 14-year-old has a Class I malocclusion with proclined upper and lower incisors. They are of Afro-Caribbean background, have no functional symptoms, and are not concerned about dental appearance. Which consideration is most appropriate when discussing orthodontic treatment?

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

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Correct answer: E — Recognise ethnic variation and base treatment on the patient's concerns and clinical findings

Explanation lettering: D = shown as A · E = shown as C · C = shown as D · A = shown as E

A is correct. Bimaxillary proclination is a recognised dentofacial characteristic in patients of Afro-Caribbean origin, so it should not automatically be judged against White European cephalometric ideals or labelled pathological. UK professional standards require an individualised discussion of options that takes account of the patient's preferences, needs and cultural values. With no functional problem or appearance concern, treatment is not automatically indicated. B is wrong because proclination is not invariably pathological. C and E wrongly ignore ethnic variation in morphology and diagnosis. D is wrong because bimaxillary proclination is multifactorial; thumb sucking may influence incisor position but cannot be presumed from this presentation.

Reference: Carter NE, Slattery DA. Bimaxillary proclination in patients of Afro-Caribbean origin. British Journal of Orthodontics. 1988;15(3):175-184. https://pubmed.ncbi.nlm.nih.gov/3048380/