Background and Objective: The clinical use of the Er:YAG laser in cavity pr
eparation has become widespread. With respect to cavities prepared with the
Er:YAG laser, restorations using composite resins and glass ionomer cement
s are common. The bond strength of current resin bonding systems to ground
enamel is 14-30 MPa, whereas the strength to Er:YAG laser-irradiated enamel
, regardless of the use or non-use of phosphoric acid etching is less than
Study Design/Materials and Methods: In this investigation, an ultrasonic sc
aler was tested as a technique to increase the bond strength of composite r
esins to the Er:YAG irradiated enamel surface.
Results: The application of the ultrasonic scaler significantly increased b
Conclusion: The tensile bond strength in the groups treated with the ultras
onic scaler exhibited approximately twice the strength observed in groups t
reated with laser irradiation alone. Lasers Surg. Med. 28:365-370, 2001. (C
) 2001 Wiley-Liss, Inc.