Comparison of Marginal Micro-leakage and Bond Strength of Resin Modified Glass Ionomer Restorations in Primary Teeth Prepared by Erbium Laser (Er:YAG) and Conventional Method ; An In vitro Study

Abstract

New technologies have been introduced as an alternative to the conventional mechanical removal technique of carious tissue, in which dental laser is one of them and have been widely tested, used and approved by literatures and studies.

A number of high-intensity lasers are introduced into dentistry and able to remove carious tissue with minimal intervention and lot of advantages such as lower noise and vibration, lower local anesthetic requirement, lower tissue contact, and lower trauma. These advantages can make the treatment more comfortable for children by facilitating the control of child’s behavior and attitude and increasing the satisfaction and cooperation.

One of those introduced lasers are Er:YAG laser and when used for cavity preparation it results in a surface with significantly different properties to that achieved by conventional mechanical methods.

That’s why many studies had been lately focusing on the impact of Er:YAG laser and whether the surface alterations created by it will result in more or less microleakage and bond strength compared to that achieved by conventional procedures.

The aim of this study was to compare the microleakage and shear bond strength of RMGI restorations in samples prepared by Er:YAG laser and conventional method in primary teeth. Also, to was to detect any possible correlation between the resultant scores of microleakage and shear bond strength.