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

✍ Scribed by D. A. M. P. Malta; M. A. M. Kreidler; G. E. Villa; M. F. de Andrade; C. R. Fontana; R. F. Z. Lizarelli

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 77 KB
• Volume: 4
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200610085

✦ Synopsis

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.