Revista de Odontologia da UNESP
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Revista de Odontologia da UNESP
Original Article

Análise Histológica dos Efeitos do Adesivo Dentinário Prime Bond 2.0 em Polpa de Ratos

Histologic analysis of the effects of an dentin adhesive prime bond 2.0 in pulp of rats

Minarelli Gaspar, A.M.; Balducci Roslindo, E.

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Resumo

O objetivo deste trabalho foi estudar os efeitos do adesivo dentinário Prime Bond 2.0 (Dentsply) em dentina e polpa de ratos por meio da análise ao microscópio de luz. A amostra consistiu de 20 ratos Rattus Norvegicus Holtzman, dos quais foram utilizados os 4 primeiros molares. O hemi-arco direito foi utilizado como grupo controle e os primeiro molares superiores e inferiores foram preenchidos com Hydro C (Dentsply) e recobertos com uma camada de resina restauradora Adaptic (Dentsply). Os molares do hemi-arco esquerdo, nos quais foi utilizado o adesivo dentinário Prime Bond 2.0 (Dentsply), foram restaurados com resina Adaptic (Dentsply) e os efeitos foram observados após 7, 15, 30 e 45 dias. O grupo tratado apresentou uma desorganização do tecido pulpar no período de 7 e 15 dias. Nos períodos seguintes, 30 e 45 dias, o processo inflamatório regrediu, a camada odontoblástica mostrou sinais de recuperação e observou-se a presença de dentina reacional. O grupo controle (Hydro C) não apresentou em nenhum período sinais de inflamação do tecido pulpar.

Palavras-chave

Adesivo dentinário, polpa, dentina, camada odontoblástica.

Abstract

The purpose of this work was to verify the effects of the Primer Bond 2.0 dentin adhesive in pulp and dentin of rats through the light microscopic. The sample consisted of 20 rats (Rattus Norvegicus Holtzman) whose first four molars were used. The right hemi-arch was used as a control group and the first superior and inferior molars had their cavities filled out with Hydro C (Dentsply) and recovered with a layer of restoring resin (Adaptic - Dentsply). In the molars of the left hemi-arch group treated, an acid attack was accomplished and later the cavities were covered with dentin adhesive Primer Bond 2.0 (Dentsply) and restored with Adaptic resin (Dentsply); the effects were observed after 7, 15, 30 and 45 days. The group being treated showed at the 7th and 15th days, a disorganization of the pulpar tissue with the presence of inflammatory cells and degeneration of the odontoblastic layer; in the subsequent periods, 30 and 45 days, the inflammatory process decreased, the odontoblastic layer showed signs of recovery and the presence of reactional dentin was observed. In the control group (Hydro C) signs of inflammatory process of the pulpar tissue were not present in any period

Keywords

Dentin adhesive, pulp, dentine, odontoblastic layer

References



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