Computer guided chin repositioning using patient specific osteotomy/screw hole/plate locating surgical guides

Document Type : Original Article

Authors

Lecturer at Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Cairo University, Cairo, Egypt.

Abstract

Chin surgeries are a very common procedure with the rise in need for appealing esthetics. Genioplasties as with other surgeries mainly depend on accurate copying of the presurgical planning. The aim of this study was to assess the accuracy of chin positing using patient specific osteotomy/screw hole locating surgical guides in genioplasties. Ten patients with chin deformities/dentofacial non-syndromic deformities were included. The chins were repositioned using osteotomy/screw holes locating and plate locating surgical guides with pre-bent plates. The accuracy of the chin segment fixation was determined by comparing the virtual planned and the postoperative CT scans. All our cases showed accurate radiographic and clinical chin position as compared to the planning with a mean deviation of 0.046 ± 0.03 mm which is lower than the reported accepted clinical deviation (1mm).The surgical osteotomy/screw-hole locating guide ,plate/chin segment locating guide and pre-bent plates presented in this study allowed for accurate chin positioning surgeries and better esthetic results.

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Egyptian Dental Journal
Volume 68, Issue 1 - Serial Number 2
January (Oral Surgery)
January 2022
Pages 113-119

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