Effects of Nd:YAG laser irradiation at different energy densities on dentin bond durability under simulated pulpal pressure
Sun, G., Chen, H., Wang, H. et al. Effects of Nd:YAG laser irradiation at different energy densities on dentin bond durability under simulated pulpal pressure. Clin Oral Invest 28 , 202 (2024). https://doi.org/10.1007/s00784-024-05600-x Abstract Objectives To evaluate the effects of Nd:YAG laser irradiation on the microstructures of dentin surfaces and the long-term bond strength of dentin under simulated pulpal pressure. Materials and methods Under simulated pulp pressure, 30 freshly extracted caries-free third molars were cut into 2-mm-thick dentin samples and then divided into five groups: the control and laser groups (93.3 J/cm 2 ; 124.4 J/cm 2 ; 155.5 J/cm 2 ; 186.6 J/cm 2 ). Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), and Vickers hardness were used to analyze the surface morphology, composition, and mechanical properties of the dentin