Abstract The main purpose of this study is to evaluate the influence of different types of ceramics and surface treatment methods on the shear bonding strength(SBS). Three different CAD/CAM ceramics were divided into 4 groups, respectively according to the following surface treatments: no treatment; etching with 4.5% HF acid; Nd:YAG laser irradiation; Nd:YAG laser followed by HF acid etching and then a silane-coupling agent and resin cement (Variolink N) were applied to each block. All specimens were stored in water for 24 h. Surface morphology of each specimen was evaluated and the SBS value was measured. The data were statistically analyzed by two-way ANOVA and LSD’s multiple comparison test (p < 0.05). Among Celtra Duo, highest SBS values were obtained in NY groups (14.80 MPa), followed by NY + HF group and HF group; the significantly highest SBS values of IPS Empress CAD specimens were obtained in HF group (13.54 MPa) (p < 0.05) and the remaining groups were not observed significant differences (p > 0.05). Among IPS e.max CAD, the HF group (14.70 MPa) showed the highest bond strength, followed by NY + HF and NY groups. There were no significant differences between NY and NY + HF group (p > 0.05). Nd:YAG laser irradiation significantly improved the surface of Celtra Duo and IPS e.max materials, but this setting of Nd:YAG laser was not appropriate for IPS Empress CAD.

中文翻译：

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Nd:YAG激光和HF处理的三种CAD/CAM陶瓷的剪切结合强度

摘要 本研究的主要目的是评估不同类型陶瓷和表面处理方法对剪切结合强度（SBS）的影响。三种不同的 CAD/CAM 陶瓷分为 4 组，分别按照以下表面处理方式：未处理；用 4.5% HF 酸蚀刻；Nd:YAG激光照射；Nd:YAG 激光，然后是 HF 酸蚀刻，然后将硅烷偶联剂和树脂水泥 (Variolink N) 应用于每个块。所有标本均在水中保存 24 小时。评价每个样品的表面形态并测量SBS值。数据通过双向方差分析和 LSD 的多重比较检验进行统计分析 (p < 0.05)。在 Celtra Duo 中，NY 组的 SBS 值最高（14.80 MPa），其次是 NY + HF 组和 HF 组；在 HF 组 (13.54 MPa) (p < 0.05) 中获得了 IPS Empress CAD 标本的显着最高 SBS 值，其余各组未观察到显着差异 (p > 0.05)。在 IPS e.max CAD 中，HF 组 (14.70 MPa) 显示出最高的粘合强度，其次是 NY + HF 和 NY 组。NY 和 NY + HF 组之间没有显着差异（p > 0.05）。Nd:YAG 激光照射显着改善了 Celtra Duo 和 IPS e.max 材料的表面，但 Nd:YAG 激光的这种设置不适用于 IPS Empress CAD。NY 和 NY + HF 组之间没有显着差异（p > 0.05）。Nd:YAG 激光照射显着改善了 Celtra Duo 和 IPS e.max 材料的表面，但 Nd:YAG 激光的这种设置不适用于 IPS Empress CAD。NY 和 NY + HF 组之间没有显着差异（p > 0.05）。Nd:YAG 激光照射显着改善了 Celtra Duo 和 IPS e.max 材料的表面，但 Nd:YAG 激光的这种设置不适用于 IPS Empress CAD。