Resumo

BRITO JUNIOR, Manoel; CAMILO, Carla Cristina; SOARES, Janir Alves  e  POPOFF, Daniela Araújo Veloso. Biocompatibility and sealing ability of mineral trioxide aggregate in root perforations. RGO, Rev. gaúch. odontol. (Online) [online]. 2013, vol.61, suppl.1, pp. 447-452. ISSN 1981-8637.

The alterations provoked by pathologies or iatrogenesis favor the invasion of the periodontium, communicating pulp cavity with periradiculares tissues. Currently, for the treatments of those root perforations, the sealer material more suitable is the mineral trioxide aggregate, that was reported for the first time in 1993 and introduced commercially in 1998. Mineral trioxide aggregate is presented under the form of a powder white or gray that, once incorporate to the distilled water, has an easy manipulation resulting in a colloidal gel whose final time setting is about 3 hours. That aggregate reaches appropriate physical and chemical properties as well as biocompatibility with the periradiculares tissues. In the current review, the use of mineral trioxide aggregate was approached as sealer material of root perforations in both in vitro and in vivo studies. It was evidenced that mineral trioxide aggregate presents good sealing ability, superior the other materials of larger longevity in the dentistry. However, most of the clinical investigations involve isolated case reports, with few longitudinal evidences of the reached results.

Palavras-chave : Dental pulp cavity.; Dental cements.; Endodontics..