| Comparative study of skeletal stability between bicortical resorbable and titanium screw fixation after sagittal split ramus osteotomy for mandibular prognathism. | |
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MedLine Citation:
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PMID: 22209495 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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INTRODUCTION: Resorbable screw fixation for orthognathic surgery is widely used in oral and maxillofacial surgery and has several advantages. However, surgeons are concerned about using resorbable screws in orthognathic surgery because of possible postoperative complications such as relapse, screw fracture, and infection. The purpose of this study was to evaluate the skeletal stability of bicortical resorbable screw fixation after sagittal split ramus osteotomies for mandibular prognathism. MATERIALS AND METHODS: This study included 25 patients who underwent mandibular setback surgery fixed with resorbable screws after sagittal split osteotomy at the Department of Oral and Maxillofacial Surgery at Seoul National University Dental Hospital. Five resorbable screws (Inion CPS(®), Inion Ltd., Finland) were applied bicortically at each osteotomy site via a transbuccal approach. No rigid intermaxillary fixation was applied on the first postoperative day. Passive mouth opening exercises were allowed, using two light, rubber elastics for guidance. The control group was 25 patients fixed with four titanium screws. The follow-up period was 12-22months (mean 17.8months). Postoperative skeletal changes on lateral cephalometric radiographs were analyzed and compared between the two groups preoperatively, immediately postoperatively, and 6months postoperatively. RESULTS: The average setback was 6.9mm and no major intraoperative complications occurred. One patient experienced infection immediately after surgery that was controlled uneventfully. The data did not demonstrate any significant difference in postoperative skeletal stability between the two groups. Differences between the immediate postoperative state and 6months after surgery were not significant. In earlier cases, especially for patients with severe mandibular prognathism, immediate postoperative elastic traction was needed for stable occlusal guidance. CONCLUSIONS: The results of this study indicate that bicortical resorbable screws offer a clinically stable outcome for the fixation of mandibular sagittal split osteotomies in mandibular prognathism. However the resorbable screws showed less stable results vertically than the titanium screws. |
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Authors:
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Jun-Young Paeng; Jongrak Hong; Chang-Soo Kim; Myung-Jin Kim |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-28 |
Journal Detail:
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Title: Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery Volume: - ISSN: 1878-4119 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-1-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8704309 Medline TA: J Craniomaxillofac Surg Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Oral and Maxillofacial Surgery (Head: Prof. Chang-Soo Kim), Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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