Avaliação da infiltração marginal em cavidades classe V em incisivos de bovinos utilizando-se dois tipos de sistemas adesivos

• Autor(a) principal: Barreto, Helio Emanoel de Mattos
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/8148
• topic: Adhesive systems; Microleakage; Dentin; Sistemas adesivos; Microinfiltração; Odontologia; Adesivos dentários; Infiltração dentária; Dentina; 616.314

The marginal selament is constituted in one of the principal obstacles for the adhesive restorations, mainly when the preparation and the extension are higienization and finishing difficult areas. The degree of difficulty and of efficiency becomes worse plenty when the cavities are located under the gums, even if the professional uses the most advanced restoring adhesive systems available. This study intended to analyze the capacity of marginal sealment of two current adhesive systems, a self achtive: Adper SE Plus, and other with total acid conditioning, of the same flask: Single Bond, and to compare the performance of them in bovine substratum (dentin) front to the test of microleakage. For this 40 bovine teeth were used. The teeth were prepared so that the enamel it was removed and the cavities class type V if they only located in the dentin in the cervical third. After these preliminary procedures, the teeth were divided in two groups A and B with 20 specimens each. The group A, the self active adhesive was used and the group B, to the same flask. Both groups received restorations with the composed resin Filtek Z 350. The specimens were waterproof with enamel for fingernails, except for 1mm about of the restoration and the apex radicular was hindered with epoxy resin. After all the specimens were immersed in the colloring solution, fucsina to 0,5% and kept in greenhouse to 37 degrees for 24 hours and tham washed in running water by the same period. For the microleakage analysis by optic microscope with increase of forty times a variable score from H0 to H3 was used and the result was submitted to the test statistical Qui-square (χ2 ),
at the level of significance 0,05. It was verified that the percentile of restorations without infiltration (H0) was the same approximately to the two groups A and B: respectively (67,5% and 70%). In the scores H1, H2 and H3, there was alternation of values among the groups, but meantime without statistical significance.