Headgear Function — ORE Part 1 MCQ

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ModerateOrthodonticsHeadgear FunctionORE Part 1

A growing patient has a Class II malocclusion associated with maxillary prominence. Which appliance is designed to restrain forward maxillary growth while mandibular growth continues?

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Correct answer: D — Cervical or high-pull headgear

D. Cervical or high-pull headgear is correct. In a growing Class II patient with maxillary prominence, headgear is used to restrict anterior maxillary displacement and commonly distalise maxillary molars. Continued mandibular growth may then improve the sagittal skeletal relationship. The pull direction is selected according to the desired vertical effects. A Twin Block is a functional appliance that postures the mandible forwards, not principally an appliance for maxillary restraint. Rapid maxillary expansion treats transverse maxillary deficiency. Fixed labial appliances alone mainly align teeth and provide dental tooth movement. A lower lingual holding arch maintains lower-arch space and has no maxillary growth-restraint role.

Reference: Janson G, et al. Effects of cervical headgear appliance: a systematic review. Dental Press Journal of Orthodontics. 2015. https://pubmed.ncbi.nlm.nih.gov/26352849/