Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1422527 | Dental Materials | 2009 | 7 Pages |
ObjectivesThis study evaluated the relationship between microtensile bond strength (μTBS) and occurrence of nanoleakage at the resin–dentin interface using the same specimens.MethodsResin–dentin-bonded micro-specimens (sticks with a size of 300 μm × 300 μm × 8 mm) were prepared using one of two material combinations (group I: Syntac classic/Tetric Ceram Cavifil: n = 57; group II: Prime & Bond NT/Spectrum TPH: n = 52). After immersion of the micro-specimens in 0.1% rhodamine-B solution for 1 h, nanoleakage was imaged nondestructively using a confocal laser scanning microscope (CLSM). Then the specimens were subjected to a μTBS test.ResultsFor the influence of nanoleakage on μTBS with the Syntac classic/Tetric Ceram Cavifil group, the nonparametric Spearman correlation was 0.033 at p = 0.805. For the Prime & Bond NT/Spectrum TPH group, the nonparametric Spearman correlation was 0.077 at p = 0.584.SignificanceThe degree of nanoleakage had no influence on microtensile bond strength for the Syntac classic/Tetric Ceram Cavifil or for the Prime & Bond NT/Spectrum TPH group.