Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80447
Type: Artigo de periódico
Title: Influence of the mineral content and morphological pattern of artificial root caries lesion on composite resin bond strength
Author: Hara, AT
Queiroz, CS
Giannini, M
Cury, JA
Serra, MC
Abstract: Dentine substrates with different mineral contents and morphological patterns were created by submitting root slabs to the following treatments: (A) immersion in artificial saliva during the experimental period (control), (B) demineralization for 32 h to induce caries lesion (demineralized group), and (C) demineralization for 32 h followed by remineralization for 8 d (remineralized group). The slabs were longitudinally sectioned, the mineral content was determined by cross-sectional microhardness, and the bond strength of an adhesive system/composite resin was assessed using a microtensile bond strength test. The dentine morphology after the treatments as well as the failure pattern of the debonded specimens was examined by scanning electron microscopy. Statistically significant differences were found in mineral content. Morphological analysis showed marked differences between the patterns of demineralized and remineralized substrates. The bond strength mean value of the control A did not differ from the group B, but was statistically higher than the group C. Since no linear relationship was found between dentine mineral content and bond strength values, it could be suggested that the morphological pattern may be more relevant than the mineral content to explain the bond strength of composite resin to dentine.
Subject: dental caries
dentine
bond strength
Country: Dinamarca
Editor: Blackwell Munksgaard
Rights: fechado
Identifier DOI: 10.1111/j.0909-8836.2004.00093.x
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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