Evaluating the Effect of Different Laser Types on Dentin Fracture Resistance

Abstract

Objectives: The aim of this in-vitro study was to evaluate the impact of the use of different laser types--particularly diode, Nd:YAG and Er:YAG--on dentin fracture resistance, with the assistance of fracture testing methods. Materials and Methods: Ninety human maxillary incisors were used. The teeth were divided into three experimental groups and three control groups, each of which included 15 samples. Group 1 had diode, group 2 had Nd:YAG, and group 3 had Er:YAG laser performed on them, after which they were dried and obturated using AH-Plus sealer and RevoS AS40 Gutta Percha (GP). Control group 1 was obturated just as in the experimental groups but without laser application; 2) control group was instrumented but not obturated; and 3) negative control group had no procedure performed at all. All the samples were fixed in acrylic blocks and had fracture tests performed on them using an Autograph Universal Testing Machine. The results were analyzed using IBM SPSS Statistics 22 software, the one-way ANOVA test and Tukey HDS (group identified that causes a difference) with significance p

Keywords

• endodontics
• laser
• fracture resistance
• dentin
• disinfection