Objectives: To evaluate the shear bond strength of one-step, self-etch adhesive to human enamel surface treated with Nd: YAG, Er:YAG, and Diode Lasers. Methods: A total of 40 freshly extracted premolars were collected and after cleaning were randomly divided into 4 groups (N = 10). Group 1 (C), one step, self-etc adhesive was applied as per manufacturer instructions, without using laser system served as the control group; Group 2, the adhesive was irradiated using Er-YAG laser (E) (2940 nm, 10, Hz, 0.4w, 40 mJ), Group 3, the adhesive was irradiated using Nd: YAG laser (N), and Group 4, the adhesive was irradiated using Diode laser (D). Post irradiation, composite build-up was done and samples were stored for 24 hours in 37OC distilled water. The shear bond strength was measured using the Universal Testing Machine and data were analyzed using one-way ANOVA and post hoc Tukey test. Result: Group 4 (Diode laser) had the highest shear bond strength of 34.79 Mpa followed by Group 3 (Nd: YAG laser) with a shear bond strength of 24.41 Mpa. Group 2 (Er: YAG laser) had the lowest shear bond strength of 9.347 Mpa respectively. Conclusion: Irradiating one-step, self-etch adhesive with a Diode laser or Nd:YAG Laser before curing with LED can improve the shear bond strength.
Impact Factor
2022: 6.012
This work is licensed under a