Bond Strength of Fiber Posts to Composite Core: Effect of Surface Treatment With Er,Cr:YSGG Laser and Thermocycling

Journal of Lasers in Medical Sciences

Mehrzad GholampourDehaki¹  Hooman Ebrahimi²  Saman Kalantari³  Ladan Ranjbar Omrani³  Masoome Hasani Tabatabaii³  Sedighe Sadat HashemiKamangar³ 

[1] Internal Medicine and Endocrinology, Medical Faculty, Aja University of Medical Sciences, Tehran, Iran;Laser Research Center, School of Dentistry, Tehran University Of Medical Sciences, International Campus, Tehran, Iran;Operative Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

关键词: Bond strength;    Composite;    Er;    Cr:YSGG laser;    Post.;   

DOI  :  

学科分类：基础医学

来源: Shahid Beheshti University of Medical Sciences

【 摘 要 】

Introduction : This study aimed to determine the bond strength of fiber post to composite core following surface treatment with Er,Cr:YSGG laser at different powers and sandblasting with and without thermocycling.Methods : In this experimental study, 30 fiber posts (Glassix, Nordin, Switzerland) were randomly divided into 5 groups of sandblasting, no treatment and laser irradiation at 1, 1.5 and 2 W powers. Following composite filling and mounting, 1-mm thick sections were made for push-out bond strength testing. Half of the samples in each group were subjected to thermocycling (n=15). Two-way analysis of variance (ANOVA) was used to analyze the bond strength values. Pairwise comparisons were made using Tukey test (P < 0.05).Results : Effect of treatment method on push-out bond strength of fiber post to composite core was significant (P = 0.017), while thermocycling had no significant effect on bond strength (P = 0.964). Pairwise comparison of surface treatment methods revealed no significant difference in groups with and without thermocycling (P > 0.05), but Er,Cr:YSGG laser irradiation with 1 W power yielded significantly higher bond strength than the control group (P =0.01).Conclusion : Irradiation of Er,Cr:YSGG laser at 1 W power increased the bond strength of fiber post to composite core. Thermocycling slightly decreased the bond strength at the fiber post-core interface.

【 授权许可】

CC BY