Oral Health and Dental Management

Effect of Er:YAG laser etching on shear bond strength of orthodontic bracket

7^th Global Dentists and Pediatric Dentistry Annual Meeting

March 31- April 01, 2016 Valencia, Spain

Radwa A Sallam

Taibah University, Saudi Arabia
National Centre for Radiation Research and Technology, Egypt

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

Laser induced caries resistance is advantageous in orthodontics. This study was designed to evaluate and compare the shear bond strength (SBS) of Erbium laser etched enamel to acid etched. Moreover, to detect morphological changes on laser etched enamel surface using scanning electron microscope (SEM). A total of fifty human premolars extracted for orthodontic purpose were used in this study. The samples were randomly divided into two groups of 25 each. The first group was etched using 37% phosphoric for 30 seconds. As for the second group, enamel was treated by Er:YAG laser operating at wavelength 2.94 μm, power 1.8W and repetition rate15Hz. Five teeth from each group were selected for scanning electron microscope (SEM) evaluation and the study was continued on 20 teeth from each group which were subjected to shear bond strength test. The results of this study showed, nosignificant difference between the mean of shear bond strength of the etched groups (p=0.435). Based on the results of this study, it was concluded that laser etched group (1.8W/15Hz) resulted in clinically accepted bond strength and could be an alternative to conventional acid etching.

Biography :

Email: radwasallam36@gmail.com