| Autor: |
Dias, Walter R. L., Pereira, Patricia N. R., Swift, Jr., Edward J. |
| Předmět: |
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| Zdroj: |
Journal of Adhesive Dentistry; 2004, Vol. 6 Issue 4, p279-285, 7p, 12 Black and White Photographs, 2 Charts, 1 Graph |
| Abstrakt: |
Purpose: The purpose of this study was to compare the microtensile bond strength (μTBS) of three adhesives to bovine enamel prepared with 600-grit silicon carbide paper, diamond rotary instrument, or carbide bur. Materials and Methods: Bovine teeth (n = 36) were randomly divided into three treatment groups and bonded using a total-etch adhesive (Single Bond, 3M ESPE), a self-etching primer system (Clearfil SE Bond, Kuraray), or a self-etching adhesive (One-Up Bond F, Tokuyama). A 4-mm composite crown was built on the bonded surfaces and specimens were stored in water for one day at 37°C. Specimens were sectioned into 0.7-mm-thick slabs, trimmed to a cross-sectional area of 1 mm², and loaded to failure at a crosshead speed of 1 mm/min using a tabletop tester (EZ-Test, Shimadzu). Microtensile bond strength data were analyzed using ANOVA and Fisher's PLSD test (α = 0.05). Results: The bond strength of each self-etching system was lower when the enamel was prepared using a diamond or carbide bur, rather than with 600-grit silicon carbide paper. Differences in μTBS between carbide- and diamond- prepared surfaces were not significant. The surface preparation method did not affect the total-etch system. Conclusion: Different preparation instruments are unlikely to affect resin-enamel bond strengths. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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