| Evaluation of bone formation after sagittal split ramus osteotomy with bent plate fixation using computed tomography. | |
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MedLine Citation:
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PMID: 19375019 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To evaluate bone formation between the proximal and distal segments after a sagittal split ramus osteotomy (SSRO) with bent plate fixation. PATIENTS AND METHODS: The subjects were 23 patients (46 sides) who underwent bilateral SSRO setback surgery. They were divided into titanium and absorbable plate groups. A 3 to 7-mm gap was made between the proximal and distal segments and a bent plate was fixed with 4 screws in each side of the mandible. The square of ramus (RmS), the anteroposterior length (RmA-RmP), and the mediolateral width (RmM-RmL) of the ramus at the horizontal plane under the mandibular foramen were assessed preoperatively, immediately after surgery, and 1 year postoperatively by computed tomography (CT). RESULTS: There were no significant differences between the titanium and absorbable plate groups over time. RmS after 1 year was larger than preoperatively in both groups (P < .0001). RmA-RmP significantly increased immediately after surgery and significantly decreased after 1 year in both groups (P < .0001). RmA-RmP after 1 year was significantly larger than the preoperative value in both groups (P < .0001). RmM-RmL showed a similar tendency to the anteroposterior length, but was not significant. CONCLUSIONS: The gap between the proximal and distal segments can fill with new bone after SSRO with both titanium and absorbable plates, even with few bony contacts between segments. |
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Authors:
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Koichiro Ueki; Yukari Hashiba; Kohei Marukawa; Katsuhiko Okabe; Kiyomasa Nakagawa; Shamiul Alam; Etsuhide Yamamoto |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial |
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: 67 ISSN: 1531-5053 ISO Abbreviation: J. Oral Maxillofac. Surg. Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-04-20 Completed Date: 2009-05-18 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: 1062-8 Citation Subset: AIM; D; IM |
Affiliation:
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Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, Kanazawa, Japan. kueki@med.kanazawa-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Absorbable Implants Adolescent Adult Bone Plates* Female Humans Male Mandible / physiology, radiography, surgery* Osteogenesis* Osteotomy* Polyesters Prognathism / radiography, surgery* Titanium Tomography, X-Ray Computed* Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Polyesters; 26969-66-4/poly(lactide); 7440-32-6/Titanium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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