Reaction of rat connective tissue to implanted dentin tubes filled with a white mineral trioxide aggregate.

• Autor(a) principal: Holland, Roberto
• Data de Publicação: 2002
• Outros Autores: Souza, Valdir de, Nery, Mauro Juvenal [UNESP], Faraco Júnior, Italo Medeiros, Bernabé, Pedro Felício Estrada, Otoboni Filho, José Arlindo [UNESP], Dezan Júnior, Eloi [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.forp.usp.br/bdj/bdj13(1)/trab04131/trab04131.pdf; http://hdl.handle.net/11449/66843
• topic: aluminum derivative; calcium derivative; mineral trioxide aggregate; oxide; root canal filling material; silicate; animal; birefringence; chemically induced disorder; connective tissue; drug combination; drug effect; drug implant; human; rat; tooth pulp disease; Aluminum Compounds; Animals; Birefringence; Calcium Compounds; Connective Tissue; Dentin, Secondary; Drug Combinations; Drug Implants; Humans; Oxides; Rats; Root Canal Filling Materials; Silicates

The purpose of this paper was to study the reaction of rat subcutaneous connective tissue to the implantation of dentin tubes filled with white mineral trioxide aggregate (MTA), a material that will be marketed. The tubes were implanted into rat subcutaneous tissue and the animals were sacrificed after 7 and 30 days. The undecalcified pieces were prepared for histological analysis with polarized light and von Kossa technique for mineralized tissues. Granulations birefringent to polarized light and an irregular structure like a bridge were observed next to the material; both were von Kossa positive. Also, in the dentin wall tubules a layer of birefringent granulations was observed. The results were similar to those reported for gray MTA, indicating that the mechanisms of action of the white and gray MTA are similar.