Abstract
ABSTRACT. The use of bony substitutes for the recovery of the lost function is a constant search in Dentistry and, more specifically in the present Implantology. For that reason the bio-materials have received a very great attention on the part of the international scientific community. The clinical use of hydroxyapatite, mainly in maxillary sinus, to gain bony altitude and installation of the dental implants has demonstrated very satisfactory results; as much without mixtures or when is used aggregated with other materials, such as PRP (platelet-rich plasma), autogenous bone, or other materials for grafts. The hydroxyapatite powder, in this proposal, was prepared by the method of the precipitation for its obtaining. Scanning Electron Microscopy (SEM), with spectroscopy in the region, infrared and diffraction of rays-x was used for characterization of the obtained material. Clinical cases were made with the objective of verifying the bone tissue promotion for the installation of implants. The result showed that the obtained dust is composed exclusively of hydroxyapatite not having happened the precipitation of phases of system cap. Histologic studies of the grafted areas and x-rays demonstrated that the receiving bed present/display suitable growth of bone tissue making possible the installation of the implants with later support of loads masticatory.
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