Loghman RezaeiSoufi
Hamdan University of Medical Sciences, Iran
Title: Effects of Er:YAG, Nd:YAG, and 940 nm diode laser irradiation on the microtensile bond strength of self-etch adhesive
Biography
Biography: Loghman RezaeiSoufi
Abstract
Nowadays, studies show that laser irradiation can enhance the adhesion of
bonding agents to the dentin. Therefore, the present study was set to find an appropriate protocol for the use of Nd:YAG, Er:YAG, and 940 nm diode lasers
during the application of the 6th generation of adhesives for dental restorations. A total number of 100 healthy extracted teeth were distributed in the ten groups. Control group(C) was prepared according to the manufacturer’s guideline. Each of the remaining 9 groups were treated with Er:YAG, Nd:YAG
and 940 nm diode lasers in following stages: Before applying primer (Er BP,Nd-BP,D-BP), After applying primer (Er-AP,Nd- AP,D-AP) and after applying bonding (Er-AB,Nd-AB,D-AB. The strength of microtensile bonding was measured using the universal testing machine. The data were analyzed using one-way ANOVA followed by post hoc Tukey test (p<0.05). The results of the means and standard deviation of the groups were as follow: C=30.09±4.21,
Er-BP=18.83±4.21,
Er-AP=14.43±3.12,
Er-AB=19.67±4.96,
Nd-BP=20.35±5.55,
Nd-AP=39.85±4.13,
Nd-AB=18.16±3.36,
D-BP=26.74±5.05,
D-AP=28.11±5.12,
D-AB=37.28±5.61.
The means of two groups: Nd:AP and D-AB were significantly higher than control groups. (p<0.05) D-BP and D-AP had no siginificant difference in
comparison with control group while the remaining groups had significantly lower values (P<0.05). It was demonstrated by the present study that implementing the Nd: YAG laser system after the primer and also implementing the 940nm diode laser after the bonding significantly improved the bond strength.