occipital anchorage

occipital anchorage: an orthodontic anchorage in which the resistance is borne by the top and back of the head, and the force is transmitted to the teeth by means of the headgear and heavy elastics connected with attachment on the teeth.

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extraoral force — force applied by orthodontic anchorage units (calvarial, occipital, or cervical) outside the oral cavity … Medical dictionary

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