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Bond strength of adhesive restorations to Er:YAG laser-treated dentin

2006; IOP Publishing; Volume: 4; Issue: 2 Linguagem: Inglês

10.1002/lapl.200610085

1612-202X

D A M P Malta, M A M Kreidler, Girlene E.P Villa, Marcelo Ferrarezi de Andrade, Carla Raquel Fontana, Rosane F. Z. Lizarelli,

Dental Erosion and Treatment

Background and Objective: evaluate the adhesion of adhesive restorations with and without a base of resin-modified glass-ionomer cement (RMGIC) to dentin irradiated with Er:YAG laser. Study Design/Materials and Methods: Twenty-four human molar teeth were divided into 6 groups (n=4): G1) 37% Phosphoric acid (PA) + Adhesive system (Ad) + Composite resin (CR); G2) RMGIC + CR; G3) Laser (60mJ-5Hz-20s) + PA + Ad + CR; G4) Laser (60 mJ–5 Hz–20 s) + RMGIC + CR; G5) Laser (100mJ-5Hz-20s) + PA + Ad + CR; G6) Laser (100mJ-5Hz-20s) + RMGIC + CR. Teeth were prepared, restored and cut into specimens, according to the treatment proposed and to methodology for microtensile test. Data were submitted to ANOVA and Tukey statistical tests ( α=5% ). Results:. The mean values for adhesion (MPa) and standard deviation (±SD) were: G1) 26.30(±4.50), G2) 5.34(±2.87), G3) 21.16(±6.01), G4) 5.22(±1.52), G5) 22.23(±4.98), G6) 5.25(±3.08). Conclusion: The use of Er:YAG laser did not influence on the restorations adhesion.