Resumo

ALBALADEJO, A. Preparation`s method of the specimen to evaluate the micromorphology of the resin-dentin interface with scanning electron microscopy. Av Odontoestomatol [online]. 2007, vol.23, n.4, pp.197-206. ISSN 2340-3152.

The infiltration of demineralized collagen fibers with resin permits formation of a hybrid layer with resin tags and adhesive lateral branches, thus creating micromechanical retention of the resin to the demineralized substrate. The micromechanical retention is the chief mechanism for resin bonding to dentin with resin penetration of the intertubular dentin being of major importance in bond strength. One of the first and most widely used tools to study the mechanisms involved in the process of bonding has been the scanning electron microscope (SEM). The principle of SEM is based upon a pseudo three-dimensional image that is built up point-by-point and line-by-line from secondary electrons. The objective of this study is to describe the preparation of the specimens to evaluate the hybrid layer, resin tags and adhesive lateral branches formations.

Palavras-chave : Dental materials; dentin; adhesion; scanning electron microscope.

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