| Manipulating the mandibular distraction site at different stages of consolidation. | |
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MedLine Citation:
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PMID: 17448830 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this study was to define optimal timing and conditions for correcting an open bite side effect by manipulating the distraction site with orthodontic springs after mandibular distraction. MATERIALS AND METHODS: At 0, 1, 2, 3, and 8 weeks postdistraction, interarch springs were attached for 2 weeks to close distraction-produced open bites in 45 rabbits. Distractors were removed in half of the animals receiving spring treatment. Segment position was recorded by weekly direct measurements and radiographs. Tissue samples were collected at the end of spring application for microcomputerized tomography analysis and measurements of lateral symmetry. RESULTS: Orthodontic springs closed the open bite with or without distractors in place immediately after distraction and partially corrected the bite at later stages of bone consolidation. Distractor removal produced more rapid bite closure but also introduced lateral buckling of the distraction site during early consolidation. The lateral buckling was not observed if springs were applied after 2 weeks of consolidation. The amount of bite correction with orthodontic springs correlated with mineralization of the distraction site. CONCLUSION: During the consolidation period, a distraction site can be callus manipulated with orthodontic springs to correct an open bite. The amount of correction depended on when springs were placed and whether distractors were removed at the time of spring application. |
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Authors:
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Shang Wei; Miriam Scadeng; Dennis Duke Yamashita; Harvey Pollack; Omar Faridi; Binh Tran; Charles Shuler; Stephen Yen |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons Volume: 65 ISSN: 0278-2391 ISO Abbreviation: J. Oral Maxillofac. Surg. Publication Date: 2007 May |
Date Detail:
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Created Date: 2007-04-23 Completed Date: 2007-05-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8206428 Medline TA: J Oral Maxillofac Surg Country: United States |
Other Details:
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Languages: eng Pagination: 840-6 Citation Subset: AIM; D; IM |
Affiliation:
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Center for Craniofacial Molecular Biology, Childrens Hospital Los Angeles, Los Angeles, CA, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Animals Biomechanics Bony Callus / physiology* Dental Stress Analysis Follow-Up Studies Mandible / surgery* Mandibular Advancement / instrumentation, methods* Open Bite / surgery*, therapy Orthodontic Appliances Orthodontics, Corrective / methods Osteogenesis, Distraction / instrumentation, methods* Rabbits Statistics, Nonparametric Time Factors Wound Healing / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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