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Safe zones and guidelines for palatal miniscrews - A Review
Abstract
Miniscrew has been used as an alternative for orthodontic anchorage reinforcement. Their smaller dimensions facilitate placement in most sites of the jaws. Palatal mini-implants have become widely used for reliable anchorage in orthodontic treatment. The palate is probably one of the most suitable sites due to it’s easily accessibility; it is covered with keratinized gingiva and thus is less susceptible to inflammation. The palatal mini implants are used as an anchorage for various purposes such as distalization of posterior teeth, it is used along with as transpalatal arches for posterior tooth stabilization or segmented palatal arches for incisor stabilization and for rapid palatal expansion. So this article focuses on the Safe zone and guidelines for miniscrew placement in the palate, the role of palatal screw in the correction of adult transverse malocclusion and various factor which determine the success on miniscrew such as Vertical bone height, Bone density, the size of implant, number of miniscrew used and the penetration depth of miniscrew.
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