13th World Congress for Laser Dentistry

26-28, April 2012

Barcelona, Spain

Meeting Abstract

Sponsors: World Federation for Laser Dentistry

- Oral Presentation 10

TITLE: Effects of Er,Cr:YSGG laser surface treatment of quarts fiber posts on root dentin-post Pull-out strength in endodontically treated premolar.

AUTHORS: Rezaei-Soufi L, Fekrazad R.

Dental Faculty of Hamadan Univercity of Medical Sciences

SOURCE: Med Oral Patol Oral Cir Bucal. 2012 May 1;17(Supplement1):S10.

* doi:10.4317/medoral.17643509

http://dx.doi.org/10.4317/medoral.17643509

Abstract

Introduction: Common application of fiber posts in the restoration of teeth under root canal therapy; increase the importance of finding out the new procedures to improve their strength.

Aim: The aim of this study was to determine the effects of Er,Cr:YSGG laser surface treatment of quarts fiber posts on root dentin-post Pull-out strength in endodontically treated premolars.

Method and materials: In this study 40 endodontically treated premolars were used. 40 quarts fiber posts divided in 2 groups, randomly: 1) Control group; only clean the posts surface with alcohol, 2) Test group, posts’ surface were treated by Er,Cr:YSGG laser beam with 1 watt power, water 10%, air 15% eradiated from 2 mm distance perpendicular to the post surface as it moves parallel to the longitudinal axes of the posts. Silane was painted on the posts’ surface and air dried after 60 seconds. After canal preparation, posts were cemented by resin cement. Pull out strength of the posts test was measured by universal testing machine and failure mode was evaluated by stereomicroscope. Data was analyzed using SPSS.

Results: Mean and standard deviation of pull out strength of control and laser group was 236.04±14.53 and 281.90±17.67 N, respectively. T-test showed significant difference between two groups. The majority of failure mode was mixed.

Conclusion: Based on the results of the present study, Er,Cr:YSGG laser surface treatment of quarts fiber posts increase root dentin-post pull out strength compared to the common clinical methods.