研究目的
Investigating the effects of Er:YAG, Nd:YAG, and Diode (940nm) lasers irradiation on the microtensile bond strength of two steps self-etch adhesives in direct dental restorations.
研究成果
Nd:YAG laser irradiation after applying the primer, and diode laser irradiation after applying the bonding agent, both can improve the microtensile bond strength in two steps self-etch adhesive systems significantly.
研究不足
The study did not investigate microscopic changes in dentin structure post-laser irradiation, which could provide deeper insights into the mechanisms of bond strength improvement.
1：Experimental Design and Method Selection:
The study involved the use of Nd:YAG, Er:YAG, and Diode lasers at different stages of the adhesive application process to assess their impact on microtensile bond strength.
2：Sample Selection and Data Sources:
100 extracted healthy teeth were selected, cleaned, and stored. The occlusal enamel was removed to expose dentin, and samples were divided into ten groups based on the laser treatment protocol.
3：List of Experimental Equipment and Materials:
Lasers (Er:YAG, Nd:YAG, Diode), self-etch adhesives, composite resin, universal testing machine, stereomicroscope.
4：Experimental Procedures and Operational Workflow:
Teeth were treated with lasers at different stages of adhesive application, followed by composite build-up. Microtensile bond strength was measured after 24 hours.
5：Data Analysis Methods:
Data were analyzed using one-way ANOVA and post hoc Tukey test.
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