Bone Biocompatibility of the Differents Kinds of Apex Sealers Materials

In paraendodontic surgery in the apicoectomy technique we should always accomplish the sealing of the dental surface exposed to the periodontal environment. Different materials have been tested, however contradictory results are shown in the literature. The success of the operative recovery is defined in the approach of the periapical bone repair without recidive of the removed chronic inflammatory lesion. The material that it is placed to stamp the dental apex, besides stamping the dentinary canaliculus, should stimulate the formation of cement and alveolar bone. Objective: The aim of this study is accomplished the evalution of the bone answer to the three materials employees in the apical sealing: silver amalgam, glass ionomer and trioxide aggregate mineral. Material and Methods: Three bony cavities, with 1 milimeter of diameter, were prepared in the tibia of eight Norvegicus Cepas Wistar rats, and filled with the mentioned materials and the surgical area was sutured. In the intervals of 30, 60, 90 and 120 days the animals were euthanasied, the anatomical pieces fixed and processed for evalution in scanning eletronic microscopy. Results: The results showed that the glass ionomer and the trioxide aggregate mineral prometed the bone formation, however, a fibrous answer isolated the amalgam of the bone surface. Conclusion: according to metodology to make use, the amalgam isn't the correct material for dental apex. However the glass ionomer and the trioxide aggregate mineral promoting new bone formation.