Comparative study of bone repair in mandibular body osteotomy between metallic and absorbable 2.0 mm internal fixation systems. Histological and histometric analysis in dogs: a pilot study
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
04/11/2013
04/11/2013
2012
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Resumo |
The objective of this study was to compare the bone repair along a mandibular body osteotomy stabilized with 2.0 mm absorbable and metallic systems. 12 male, adult mongrel dogs were divided into two groups (metallic and absorbable) and subjected to unilateral osteotomy between the mandibular third and fourth premolars, which was stabilized by applying two 4-hole plates. At 2 and 18 weeks, three dogs from each group were killed and the osteotomy sites were removed and divided equally into three parts: the upper part was labelled the tension third (TT), the lower part the compression third (CT), and the part between the TT and CT the intermediary third (IT). Regardless of the treatment system, union between the fragments was observed at 18 weeks and the CT showed more advanced stages of bone repair than the TT. Histometric analysis did not reveal any significant differences among the 3 parts or systems in the distance between bone fragments at 2 weeks. Although at 18 weeks the proportions of newly formed bone did not differ among TT, IT and CT, significantly enhanced bone formation was observed in all sections for the metallic group. The patterns of repair were distinct between treatments. State of Sao Paulo Research Foundation (FAPESP) State of Sao Paulo Research Foundation (FAPESP) [07/00892-8] |
Identificador |
INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, EDINBURGH, v. 41, n. 11, supl. 1, Part 3, pp. 1361-1368, NOV, 2012 0901-5027 http://www.producao.usp.br/handle/BDPI/37824 10.1016/j.ijom.2012.04.012 |
Idioma(s) |
eng |
Publicador |
CHURCHILL LIVINGSTONE EDINBURGH |
Relação |
INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY |
Direitos |
closedAccess Copyright CHURCHILL LIVINGSTONE |
Palavras-Chave | #INTERNAL FIXATION #OSTEOTOMY #BONE REPAIR #ABSORBABLE SYSTEM #BIODEGRADABLE PLATES #IN-VITRO #MINIPLATE SYSTEM #FACIAL FRACTURES #RESORBABLE MESH #POLYLACTIC ACID #LONG-TERM #SCREWS #TITANIUM #OSTEOSYNTHESIS #DENTISTRY, ORAL SURGERY & MEDICINE #SURGERY |
Tipo |
article original article publishedVersion |