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Medicina Oral, Patología Oral y Cirugía Bucal (Internet)

versão On-line ISSN 1698-6946


AGUIRRE ZORZANO, Luis Antonio; RODRIGUEZ TOJO, María José  e  AGUIRRE URIZAR, José Manuel. Maxillary sinus lift with intraoral autologous bone and B - Tricalcium Phosphate: Histological and histomorphometric clinical study. Med. oral patol. oral cir.bucal (Internet) [online]. 2007, vol.12, n.7, pp.532-536. ISSN 1698-6946.

Introduction: Rehabilitation with implants in the upper maxilla often implies a challenge due to the shortage and quality of the remaining bone. Different kinds of grafts have been described in an endeavour to solve these problems. Aim: The purpose of this study was to assess the osteoconduction potential of an autogenous bone and B-Tricalcium Phosphate mixture, in the treatment of atrophic upper maxillae. Materials and Methods: 22 patients were treated using the "sinus lift" technique. All patients had residual bone equal to or greater than 5 mm, the sinus was lifted, bone grafted and implants installed during the same surgical procedure (autologous bone and B- Tricalcium Phospahate). During the implant exposure after the osseointegration period, samples of regenerated bone were taken using a trephine from 5 patients. Paraffin-embedded sections were analysed the structure and tissues percentages. Data were estimated statistically. Results: Clinical results showed integration of the 42 fixtures installed. Histological analysis showed good integration of the -Tricalcium Phosphate in the newly formed bone likewise absence of inflammation. Histomorphometric analysis showed a mean bone proportion of 30.7% (range 22.8% - 50.6%). Conclusions: Results suggest the osteoconductive material B-Tricalcium Phosphate associated with autologous bone obtained through filtration is an appropriate graft for implant treatment of atrophic maxillae, in combination with the sinus lift procedure.

Palavras-chave : Bone graft; Tricalcium Phosphate; dental implants; maxillae sinus; morphometric.

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