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30.06.2018 | Craniofacial Skeleton (WE Roberts, Section Editor) | Ausgabe 4/2018

Current Osteoporosis Reports 4/2018

Extra-Alveolar Bone Screws for Conservative Correction of Severe Malocclusion Without Extractions or Orthognathic Surgery

Zeitschrift:
Current Osteoporosis Reports > Ausgabe 4/2018
Autoren:
Chris C. H. Chang, Joshua S. Y. Lin, H. Y. Yeh
Wichtige Hinweise
This article is part of the Topical Collection on Craniofacial Skeleton

Abstract

Purpose of Review

Evaluate management of challenging malocclusions conservatively (no extractions or orthognathic surgery).

Recent Findings

Most malocclusions have a predominately environmental etiology. Optimal esthetics and function are restored by aligning the dentition over the apical base of bone at the appropriate vertical dimension of occlusion (VDO). Extra-alveolar (E-A) anchorage is achieved at three intraoral sites: mandibular buccal shelf (MBS), infrazygomatic crest (IZC), and anterior ramus. MBS and IZC bone screws effectively anchor the conservative correction of severe dental and skeletal malocclusions. All bone screw sites are effective for anchoring lever arms to recover impacted teeth. Rather than extracting teeth, E-A anchorage corrects crowding by retracting the posterior segments to increase arch length. Skeletal malocclusion is corrected by aligning teeth over the apical base of bone and restoring the VDO by retracting and posteriorly rotating the dental arches as segments.

Summary

Challenging dental and skeletal malocclusions can be treated routinely via determinate mechanics anchored with E-A bone screws.

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