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JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, vol.34, no.16, pp.1809-1822, 2020 (SCI-Expanded)
The present research aimed to evaluate the effect of sintering temperature (1300 degrees C, 1400 degrees C and 1600 degrees C) on short-term and long-term SBS values (SBS(1)and SBS2, respectively) as well as grain size and surface roughness of a novel multi-layered monolithic zirconia material (Katana STML). One hundred and eighty-six samples (N = 186) of monolithic zirconia were prepared and randomly divided into three groups (n = 62) according to the final sintering temperatures. Two samples from each group were taken before and after sandblasting for scanning electron microscopy (SEM) examination. The surface roughness (Ra) values were determined. Sixty samples for each group were divided into three subgroups according to the resin cement (n = 20) and luting procedures were performed. Half of the specimens for each subgroup (n = 10) were non-aged, while the other half (n = 10) were aged before shear bond strength test (SBSt). One-way analysis of variance (ANOVA), two-way ANOVA and independent samplesT-test were used to analyse the data. The sintering temperature, resin cement and their interaction were significant (p <= .05) for both aged and non-aged samples. The grain sizes and Ra values of monolithic zirconia significantly increased by the increase of sintering temperature (p <= .05). The aging significantly reduced SBS values (p <= .05). Sintering temperature and resin cement affected both SBS(1)and SBS(2)values between resin cement and monolithic zirconia (p <= .05). Application of 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) containing primer revealed an increase in long-term SBS values in response to the increase in sintering temperature.