Effect of Er:YAG laser application on the shear bond strength and microleakage between resin cements and Y-TZP ceramics
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Hakan Akin & Faik Tugut & Gulsah Emine Akin & Umit Guney & Burcu Mutaf
- چاپ و سال / کشور: 2010
Description
The objective of this study was to investigate the effect of Er:YAG laser irradiation on shear bond strength and microleakage between resin cements and yttriumstabilized tetragonal zirconia (Y-TZP) ceramics. Eighty disc specimens of Y-TZP ceramics (6 mmپ~4 mm) were prepared. The specimens were divided into two groups according to surface treatment (control and Er:YAG lasertreated). The control and lased specimens were separated into two groups for shear bond strength test (n=20), and microleakage evaluation (n=10). Specimens were subjected to shear bond strength test by a universal testing machine with a crosshead speed of 1 mm/min. Specimens for microleakage evaluation were then sealed with nail varnish, stained with 0.5% basic fuchsin for 24 h, sectioned, and evaluated under a stereomicroscope. The data were analyzed with one-way ANOVA and post hoc Tukey-Kramer multiple comparisons tests (ƒ؟=0.05) for shear bond strengths and a two related-samples tests (ƒ؟=0.05) for microleakage scores. Higher bond strength values were found in the laser-treated groups compared to the control groups. Microleakage scores among the groups showed that the laser-treated specimens had lower microleakage scores than those of control specimens in the adhesive-ceramic interface. Roughening surface of Y-TZP ceramic by Er: YAG laser increased the shear bond strengths of ceramic to dentin and reduced the microleakage scores.
Lasers Med Sci DOI 10.1007/s10103-011-0883-4 Received: 15 September 2010 / Accepted: 30 December 2010
