alexa Influence of cement type on the marginal adaptation of all-ceramic MOD inlays.
Dentistry

Dentistry

Dentistry

Author(s): Rosentritt M, Behr M, Lang R, Handel G

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Abstract OBJECTIVE: The aim of this study was to investigate the in-vitro marginal adaptation of all-ceramic class II inlays which were luted with conventional multi-stage pre-treatment cements and one new type of cement, which requires no conditioning. METHODS: The marginal adaptation of 56 all-ceramic inlays was determined with scanning electron microscopy and microleakage tests. The marginal integrity of each tooth was evaluated at cement-dentin and cement-enamel junctions, with regard to the transitions between tooth-cement and cement-inlay. The inlays were luted on human molars with two resin cements, one compomer, one resin modified glass-ionomer and one new resin cement in accordance with the manufacture's recommended pre-treatment. Light- and chemical-curing modifications were investigated. All tests were performed after thermal cycling and mechanical loading (TCML). RESULTS: For the resin cements and the new material the marginal integrity was higher than 90\% before and after TCML. The marginal adaptation was between 55-80\% for the resin modified glass-ionomer and lower than 20\% for the compomer. The microleakage was lower than 20\% for all cements, only the compomer showed values up to 100\% penetration. SIGNIFICANCE: The difference in marginal integrity between the new universal resin cement without any tooth pre-treatment and conventional resin cements after total-etching, priming and bonding was not significant. Resin GIC may be used with restrictions and compomer cement should not be used with all-ceramic class II inlay restorations. This article was published in Dent Mater and referenced in Dentistry

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