Document Detail

Resorbable versus titanium osteosynthesis devices in bilateral sagittal split ramus osteotomy of the mandible - the results of a two centre randomised clinical study with an eight-year follow-up.
MedLine Citation:
PMID:  20338772     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: This study was conducted to compare the long-term clinical outcome of patients with jaw disproportion who had had fixation with resorbable polylactic acid containing positioning screws with those who had had titanium positioning screws in bilateral sagittal split ramus osteotomy of the mandible (BSSO).
PATIENTS AND METHODS: Sixty-six patients with isolated mandibular jaw disproportion were included and divided randomly into two treatment groups (resorbable and titanium). Patients were followed for 8 years postoperatively using a standardised protocol. Material-specific complications, functional problems and clinical findings within the former operation field were documented. Treatment stability was determined by occlusion criteria.
RESULTS: Thirty-four patients (54%) were followed until the end of the study. No significant differences were observed in the outcomes of patients in the two groups related to the materials used for osteosynthesis or the long-term treatment stability. During the study, no foreign body reactions were observed.
CONCLUSION: This study showed that resorbable and titanium positioning screws were equally effective as fixation devices in sagittal split osteotomy. Complete resorption of the resorbable screws could not be verified because of the absence of histological examination, however, the use of resorbable positioning screws can be considered as an alternative osteosynthesis material to conventional titanium osteosynthesis devices in sagittal split osteotomy.
Philipp Stockmann; Hartmut Böhm; Oliver Driemel; Joachim Mühling; Hans Pistner
Publication Detail:
Type:  Comparative Study; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2010-03-24
Journal Detail:
Title:  Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery     Volume:  38     ISSN:  1878-4119     ISO Abbreviation:  J Craniomaxillofac Surg     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-13     Completed Date:  2010-12-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8704309     Medline TA:  J Craniomaxillofac Surg     Country:  Scotland    
Other Details:
Languages:  eng     Pagination:  522-8     Citation Subset:  D; IM    
Copyright Information:
Copyright © 2010 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.
Department of Oral and Maxillofacial Surgery, University of Erlangen-Nuremberg, Erlangen, Germany.
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MeSH Terms
Absorbable Implants*
Bone Screws*
Dental Stress Analysis / methods
Elastic Modulus
Finite Element Analysis
Follow-Up Studies
Jaw Fixation Techniques / instrumentation*
Lactic Acid
Mandible / abnormalities,  surgery*
Orthognathic Surgical Procedures / instrumentation*
Osteotomy / instrumentation
Polyglycolic Acid
Postoperative Complications
Prognathism / surgery
Retrognathism / surgery
Shear Strength
Statistics, Nonparametric
Treatment Outcome
Young Adult
Reg. No./Substance:
0/polylactic acid-polyglycolic acid copolymer; 26009-03-0/Polyglycolic Acid; 50-21-5/Lactic Acid; 7440-32-6/Titanium

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