EVALUATION OF ND: YAG LASER IRRADIATION EFFECT ON THE MICROTENSILE BOND STRENGTH AND MICROLEAKAGE IN CLASS V COMPOSITE

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VAHDATINIA FARSHID; REZAEI SOUFI LOGHMAN

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Journal: JOURNAL OF LASERS IN MEDICAL SCIENCES Year:2018 | Volume:9 | Issue:SUPPL A (9TH WORLD CONGRESS OF SOLA) Page(s): 39-39

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Title

EVALUATION OF ND: YAG LASER IRRADIATION EFFECT ON THE MICROTENSILE BOND STRENGTH AND MICROLEAKAGE IN CLASS V COMPOSITE

Author(s)

VAHDATINIA FARSHID | REZAEI SOUFI LOGHMAN

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Abstract

Background: Nowadays, the main focus of dental studies is on adhesive dental materials; because the clinical long-term success of bonded restorations depends more on marginal microleakage minimization and microtensile bond strength enhancement. Therefore, the aim of this study was the evaluation of Nd: YAG laser irradiation effects on the microtensile bond strength and microleakage in class V composite restoration.Methods: In this in vitro-experimental study, standard class V cavity was prepared on both lingual and buccal surfaces of 30 premolar teeth. For the evaluation of microtensile bond strength, 30 teeth were divided randomly into two groups A, B (n=15): A) primer+adhesive (Clearfil TM SE Bond), B) primer+laser Nd: YAG (1064 nm, 60 mJ, 15 Hz, 0.9 W, 20 s), and for the evaluation of microleakage, 30 teeth were divided randomly into 2 groups C, D (n=15): C) primer+adhesive (Clearfil TM SE Bond), D) primer+laser Nd: YAG (1064 nm, 60 mJ, 15 Hz, 0.9 W, 20 s). Then, restoration was completed with Z250 composite. Data analyzing was performed using 16 SPSS software. Non-parametric Wilcoxon and Mann-Whitney U tests for microleakage comparison and T-test were used for microtensile bond strength at 0.05% significance level.Results: According to non-parametric Mann-Whitney U, microleakage scores had significant differences before and after laser irradiation on intended adhesive (P=0.049). Also, based on Wilcoxon test results, total microleakage scores of occlusal margins in both groups were statistically significantly different in comparison with gingival margins (P=0.005). T-test results showed that there was a significant difference between study groups on microtensile bond strength (P=0.016). According to the results of the study, we saw marginal microleakage reduction after Nd: YAG laser irradiation with mentioned characteristics on self-etch primer. Also, microtensile bond strength of the irradiated group showed a significant enhancement in comparison with the control group.Conclusion: This study findings showed that Nd: YAG laser irradiation on self-etch primer before bonding have significant effect on marginal leakage reduction and microtensile bond strength enhancement of 6th generation adhesive in class V cavities.

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APA: Copy

VAHDATINIA, FARSHID, & REZAEI SOUFI, LOGHMAN. (2018). EVALUATION OF ND: YAG LASER IRRADIATION EFFECT ON THE MICROTENSILE BOND STRENGTH AND MICROLEAKAGE IN CLASS V COMPOSITE. JOURNAL OF LASERS IN MEDICAL SCIENCES, 9(SUPPL A (9TH WORLD CONGRESS OF SOLA)), 39-39. SID. https://sid.ir/paper/326059/en

Vancouver: Copy

VAHDATINIA FARSHID, REZAEI SOUFI LOGHMAN. EVALUATION OF ND: YAG LASER IRRADIATION EFFECT ON THE MICROTENSILE BOND STRENGTH AND MICROLEAKAGE IN CLASS V COMPOSITE. JOURNAL OF LASERS IN MEDICAL SCIENCES[Internet]. 2018;9(SUPPL A (9TH WORLD CONGRESS OF SOLA)):39-39. Available from: https://sid.ir/paper/326059/en

IEEE: Copy

FARSHID VAHDATINIA, and LOGHMAN REZAEI SOUFI, “EVALUATION OF ND: YAG LASER IRRADIATION EFFECT ON THE MICROTENSILE BOND STRENGTH AND MICROLEAKAGE IN CLASS V COMPOSITE,” JOURNAL OF LASERS IN MEDICAL SCIENCES, vol. 9, no. SUPPL A (9TH WORLD CONGRESS OF SOLA), pp. 39–39, 2018, [Online]. Available: https://sid.ir/paper/326059/en

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