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Journal of Oral Laser Applications

Year 2003
Volume 3 , Issue 1

Pages: 21 - 25

Influence of Er:YAG Laser on Tensile Bond Strength of Resin-modified Glass-ionomer Cements to Dentin

Silmara A. M. Corona/Marcio de Menezes/Maria C. Borsatto/Daniela T. Chimello/Jesus D. Pécora/Regina G. Palma-Dibb

Purpose: This in vitro study assessed the tensile bond strength of glass-ionomer cements to dentin after surface treatment with Er:YAG laser. Materials and Methods: Sixty human dentin surfaces were assigned to 3 groups: 1) Er:YAG laser (80 mJ/2 Hz); 2) Er:YAG laser + conditioner; 3) control. Samples were fabricated from ProTec CEM (P) and Vitremer R (V). After 24 h of storage in water, bond strength was tested. Results: Averages (SD) in MPa for Vitremer R were: group 1, 5.49 (±1.54); group 2, 8.97 (±2.09); group 3, 14.06 (±2.67); and for ProTec CEM: group 1, 0.13 (±0.20); group 2, 4.19 (±2.04); group 3, 2.09 (±1.36). ProTec CEM yielded the highest bond strength when laser and conditioner were associated. For Vitremer R, better results were obtained without previous laser treatment. Conclusion: Er:YAG laser irradiation may influence glass-ionomer cement adhesion to dentin.


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