Reconstruction of the anterior wall of the frontal sinus using bovine bone matrix. Histological study

The purpose of this study was to evaluate the repair process in the reconstruction of the anterior wall of the frontal sinus of monkeys with bovine bone matrix. Four adult Cebus apella monkeys underwent an ostectomy of the anterior wall of the frontal sinus. The frontal sinus mucosa and the nasofrontal duct were not manipulated. Reconstruction occurred with implants of bovine bone matrix laminae...
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Evaluation of Bone Heating, Immediate Bone Cell Viability, and Wear of High-Resistance Drills After the Creation of Implant Osteotomies in Rabbit Tibias

Purpose: The purpose of this study was to evaluate the influence of reusing high-resistance drills on bone heating, immediate bone cell viability, and drill wear after performing implant osteotomies in rabbit tibias. Materials and Methods: Two hundred sequential implant osteotomies were created in the superior tibial cortex of 12 White male rabbits. Six groups were established (G1 to G6)...
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Maxillary Bone Defect Reconstruction Using Porous Polyethylene Implants

Purpose: The aim of this study was to evaluate the bone repair process in the maxillary sinus in monkeys treated with high-density porous polyethylene (Medpor) Methods: Four capuchin monkeys (Cebus apella) were submitted to bilateral horizontal osteotomies in the anterior wall of the max- illary sinus and divided into 2 groups: control group, left side with no implants, and porous polyethylene...
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Assessment of the interface between implant and abutments of five systems by scanning electronic microscopy

Aim The objective of this study was to assess, by Scanning Electronic Microscopy (SEM), the interface between the platforms of five implant systems and the conic abut- ments (I) gold ucla type (II) and multi-unit type (III). Materials and methods The implant systems used and their respective abutments studied were: AS Technology Titani- um Fix (I, II, III), Conexão (I, II, III), Neodent (I, II,...
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Enxerto em bloco vestibulopalatino para reconstrução tridimensional do rebordo alveolar

Com a perda dos elementos dentários, o volume ósseo da crista alveolar tende a diminuir, tanto em altura como em espessura, produzindo grandes defeitos que impossibilitam a instalação de implantes. O objetivo das cirurgias reconstrutivas é a restauração da anatomia original do alvéolo, permitindo um posicionamento adequado do implante que favoreça o tratamento protético sobre o ponto de...
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Cyclosporine-a and bone density around titanium implants: a histometric study in rabbits

Aim Cyclosporine A (CsA) is an immunosuppressive agent common- ly used to prevent organ transplantation rejection. It has been demonstrated that CsA may negatively affect osseointegration around dental implants. Therefore, the aim of this study was to eva- luate the effect of CsA administration on bone density around tita- nium dental implants. Materials and Methods Fourteen New Zealand rabbits...
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