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Orthodontic Anchorage — NDEB AFK MCQ

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ModerateOrthodonticsOrthodontic AnchorageNDEB AFK

Which of the following is the recommended anchorage preparation for orthodontic space closure after extraction of first premolars?

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Correct answer: E — Headgear, transpalatal arch, or temporary anchorage devices (TADs) to prevent unwanted mesial movement of molars

During orthodontic space closure after premolar extraction, the posterior teeth (molars) must be prevented from drifting mesially (loss of anchorage) so that the extraction space is used to retract the anterior teeth. Anchorage reinforcement methods include headgear (extraoral force), transpalatal arch (intra-arch stabilisation), Nance holding arch, and TADs (absolute skeletal anchorage). Without adequate anchorage control, the molars may move mesially, consuming the extraction space and preventing adequate anterior retraction.

Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019