13th World Congress for Laser Dentistry

26-28, April 2012

Barcelona, Spain

Meeting Abstract

Sponsors: World Federation for Laser Dentistry

-  Poster 46

TITLE: Comparison the Microleakage of Class V Composite-resin Restoration of the Cavity Prepared with Diamond Bur and Er, Cr: YSSG, using Two Types of Adhesive.

AUTHORS: Jazaeri M, Rezaei-Soufi L, Fekrazad R, Rafiein N.

Dental Faculty Of Hamadan Univercity Of Medical Sciences

SOURCE: Med Oral Patol Oral Cir Bucal. 2012 May 1;17(Supplement1):S194.

* doi:10.4317/medoral.17643694

http://dx.doi.org/10.4317/medoral.17643694

Abstract

Introduction: Microleakage Reduction of teeth restoration is an important factor for their success.

Aim of the study: The aim of this study was to assess the microleakage of the class V composite restoration of the cavity prepared with diamond bur and Er,Cr:YSSG laser, using two types of adhesive.

Material and methods: 1OO molar teeth was divided to four groups (n=25) and prepared as follows; G1: Diamond bur+ adhesive (Self-etch,two step), G2: Er,Cr:YSSG Laser+ adhesive (Self-etch,two step), G3: Diamond bur + adhesive one (Self-etch,one step), G4: Er,Cr:YSSG Laser+ adhesive one (Self-etch,one step). Laser apparatus set at 300 mJ of energy, 4 Hz frequency, 10 % water, 15% of air, and adhesive was applied as manufacturer’s instruction. After filling the teeth by composite-resin, they were thermocycled and immersed in a 0.5% basic fuchsin solution for 24 h. Microleakage was evaluated by stereomicroscope and scored as: 0 (no dye penetration); 1 (dye penetration).

Results: statistical analysis revealed significant differences between preparation methods. lower dye penetration was perceived in G1.

Conclusion: Based on our results, using diamond bur for cavity preparation leads to the least microleakage. Microleakage of self-etch two step adhesive after cavity preparation with Er,Cr:YSSG laser.