13th World Congress for Laser Dentistry

26-28, April 2012

Barcelona, Spain

Meeting Abstract

Sponsors: World Federation for Laser Dentistry

-  Poster 70

TITLE: Morphological Changes Of Human Intracanal Dentin After Nd: YAG laser Irradiation, Ultrasonic and Conventional Methods: SEM Evaluation.

AUTHORS: Ghorbanzadeh A, Aminsobhani M, Sohrabi Kh, Ghafari S, Chiniforush N, Shamshiri AR.

Laser Research Center of Dentistry, Endodontic department, School of Dentistry, Tehran University of medical sciences

SOURCE: Med Oral Patol Oral Cir Bucal. 2012 May 1;17(Supplement1):S218.

* doi:10.4317/medoral.17643718

http://dx.doi.org/10.4317/medoral.17643718

Abstract

Introduction: Chemo mechanical debridement is an important part of endodontic treatment. Elimination of pulpal tissue, microbiota and their by-products, organic and inorganic debris removal by using instruments and intracanal irrigants are objectives of this important phase of treatment. The aim of this study was to exvivo evaluation of smear layer removal in conventional clinical methods, Passive Ultrasonic Irrigation, Laser Activated Irrigation.

Methods and Materials: 54 anterior mandibular teeth was used in this study. After preparation of samples, they were divided in to 3 groups of Conventional Irrigation +Smear layer removal, Passive Ultrasonic Irrigation, Laser Activated Irrigation. Then, the samples were cut longitudinally in mesiodistal direction for examination by SEM (1500X) for assessing smear layer removal.

Results: In coronal, middle and apical one third, the best result was obtained from Conventional Irrigation + Smear layer removal group for smear layer removal.

Conclusion:According to better smear layer removal in Conventional Irrigation + Smear layer removal, it is considered as gold standard protocol and other groups cannot be a suitable substitution for this method.