Resumo

DECCO, Oscar A. et al. Guided Bone Regeneration With Microfixed PLA/PGA Membranes in an Experimental Model. Cienc. docencia tecnol. [online]. 2009, n.38, pp.191-203. ISSN 1851-1716.

Guided Bone Regeneration (GBR) was studied on critical sized bone defects in rabbit tibia, by using resorbable membranes of PLA/PGA microfixed through Vitallium microscrews and Luhr microplates. Macroscopically, no remains of membrane were found in any of the samples. In each sample, compact osseous tissue was observed at the osteotomy zone as in the regions nearby the microscrew and in contact with it. In those osteotomies in which PLA/PGA membranes were used without microfixation, a depression of the tissue was visualized. Microscopically, a good bone organization with noticeable osteons conformations and interstitial haversians systems was found. Twelve months after the surgery, bone regeneration was achieved in every sample, having no remains of the PLA/PGA membranes at the microscopic level.

Palavras-chave : GBR; Membranes; PLA/PGA; Microfixation.

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