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Thumb Sucking Open Bite — ORE Part 1 MCQ

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EasyOrthodonticsThumb Sucking Open BiteORE Part 1

A 12-year-old is found to have an anterior open bite associated with a persistent thumb-sucking habit. They are still growing and have no features suggesting a skeletal discrepancy. What is the most appropriate first step in management?

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

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Correct answer: D — Provide advice and support to stop the thumb-sucking habit

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

A is correct. The first step is to address the cause: provide supportive habit-cessation advice and review progress. In a growing child, an anterior open bite associated with non-nutritive sucking may improve or self-correct after the habit stops. Fixed appliances may be considered later if a clinically significant malocclusion persists after cessation and orthodontic assessment. Orthognathic surgery is inappropriate while growth continues and is reserved for selected severe skeletal discrepancies after growth. Extraction of sound incisors is not a treatment for a thumb-sucking open bite. Deferring all management is also wrong because it leaves the causative habit unaddressed.

Reference: Adriano LZ, et al. Anterior open bite self-correction after cessation of non-nutritive sucking habits: a systematic review. European Journal of Orthodontics, 2023. https://pubmed.ncbi.nlm.nih.gov/37080715/