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Polyurethane and PTFE membranes for guided bone regeneration : histopathological and ultrastructural evaluation

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Polyurethane and PTFE membranes for guided bone regeneration : histopathological and ultrastructural evaluation

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dc.contributor.author Monteiro, Adriana Socorro Ferreira es
dc.contributor.author Macedo, Luís Guilherme Scavone es
dc.contributor.author Macedo, Nelson Luiz es
dc.contributor.author Balducci, Ivan es
dc.date.accessioned 2017-07-27T08:46:05Z
dc.date.available 2017-07-27T08:46:05Z
dc.date.issued 2010 es
dc.identifier.citation Monteiro, Adriana Socorro Ferreira ; Macedo, Luís Guilherme Scavone ; Macedo, Nelson Luiz ; Balducci, Ivan. Polyurethane and PTFE membranes for guided bone regeneration : histopathological and ultrastructural evaluation. En: Medicina oral, patología oral y cirugía bucal. Ed. inglesa, 15 2 2010: 22- es
dc.identifier.uri http://hdl.handle.net/10550/60382
dc.description.abstract Objective: The purpose of this study was to research a membrane material for use in guided bone regeneration. Study design: In this study, 25 male Wistar rats were used to analyze the biocompatibility and degradation process of biomembranes. The morphological changes in subcutaneous implantations were assessed after 7, 14, 21, 28 and 70 days. The materials were made of polyurethane polymer (AUG) obtained from vegetal oil (Ricinus communis) and polytetrafluoroethylene membrane (PTFE). The surface characteristics of the physical barriers in scanning electronic microscopic (SEM) were also evaluated. Results: In both groups, the initial histological analysis showed moderate inflammatory infiltrate, which was predominantly polymorphonuclear. There was also a presence of edema, which was gradually replaced by granulation tissue, culminating in a fibrous capsule. In the AUG group, some multinucleated giant cells were present in the contact interface, with the space previously occupied by the material. However, membrane degradation was not observed during the period studied. According to the present SEM findings, porosity was not detected in the AUG or PTFE membranes. Conclusion: The researched material is biocompatible and the degradation process is extremely slow or may not even occur at all. es
dc.title Polyurethane and PTFE membranes for guided bone regeneration : histopathological and ultrastructural evaluation es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/medoral.15.e401 es
dc.type.hasVersion VoR es_ES

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