| Replacement of the condyle and ascending ramus by a modular endoprosthesis in Macaca fascicularis--part 1: a clinical and radiographic study. | |
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MedLine Citation:
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PMID: 19531408 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To evaluate the feasibility of replacing the condyle and ascending ramus with a novel modular endoprosthesis in Macaca fascicularis. MATERIALS AND METHODS: Eight male adult monkeys (Macaca fascicularis) were used in this study. The right condyle and ascending ramus posterior to the lower second molar were resected. An endoprosthesis consisting of 2 modules was inserted to replace the resected segment and fixed in place using polymethylmethacrylate bone cement (Palacos). Four monkeys were sacrificed at 3 months and another 4 at 6 months postoperatively. The operated side of the mandible was then harvested, including the endoprosthesis and the stump of the mandible to which it was attached. Lateral mandibular radiographs were taken using standard settings immediately postoperatively and postsacrifice. RESULTS: Two monkeys presented with a fistula at the operated area 1 month postoperatively, but this resolved with a short course of antimicrobial treatment. At the time of sacrifice, no fistulas, dehiscences, or mobility of the endoprostheses was observed. There was no significant change in maximum mouth opening. At 3 months, a linear radiolucency was noted at the cement-bone interface in the 2 monkeys that previously presented with fistulas; whereas at 6 months, none of the 4 animals showed any radiolucency. CONCLUSIONS: The use of a cemented modular endoprosthesis for replacement of the condyle and ramus unit was feasible with minimal complications allowing normal mouth opening and occlusion. Further histologic and microfocus computed tomographic studies will be done to confirm the findings. |
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Authors:
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Bee Tin Goh; Shermin Lee; Henk Tideman; Paul J W Stoelinga |
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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: 67 ISSN: 1531-5053 ISO Abbreviation: J. Oral Maxillofac. Surg. Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-06-17 Completed Date: 2009-07-06 Revised Date: 2010-07-28 |
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: 1392-400 Citation Subset: AIM; D; IM |
Affiliation:
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Department of Oral and Maxillofacial Surgery, National Dental Centre, Singapore, Republic of Singapore. gohbee@starhub.net.sg |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Bone Cements Cementation Feasibility Studies Joint Prosthesis* Macaca fascicularis Male Mandible / radiography, surgery* Mandibular Condyle / radiography, surgery Mandibular Prosthesis* Polymethyl Methacrylate Prosthesis Design Range of Motion, Articular |
| Chemical | |
Reg. No./Substance:
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0/Bone Cements; 9011-14-7/Polymethyl Methacrylate |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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