Assessing microleakage of class V resin composite restorations after Er:YAG laser and bur preparation

✍ Scribed by Ana Cecilia Corrêa Aranha; Mirian Lacalle Turbino; G. Lynn Powell; Carlos de Paula Eduardo

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 138 KB
• Volume: 37
• Category: Article
• ISSN: 0196-8092
• DOI: 10.1002/lsm.20208

✦ Synopsis

Background and objective:

This study aimed to evaluate the extent of microleakage in cavities prepared with bur and er:yag laser, hybridized with different bonding systems.

Study design:

Sixty bovine teeth were randomly divided into six groups (n = 10): (g1) diamond bur + single bond; (g2) diamond bur + adhese; (g3) diamond bur + clearfil se bond; (g4) er:yag (250 mj, 4 hz, 80.6 j/cm(2)) + single bond; (g5)er:yag + adhese, and (g6) er:yag + clearfil. cavities were restored with a micro-hybrid composite resin. after thermocycling, the specimens were stained with 2% methylene blue solution and sectioned in the mesiodistal direction. dye penetration was scored based upon the extent of the dye using a light stereoscope.

Results:

The kruskal-wallis and mann-whitney test revealed no statistically significant differences between the method of preparation (diamond bur and laser). however, statistical differences were found between the adhesives tested.

Conclusion:

Based on the results of this study, er:yag laser confirmed to be as effective as the conventional methods for preparing adhesive restorations.