Abu Hasna Amjad, Martinho Frederico Canato, Sellan Pablo Lenin Benitez, Pampuri Camila Reis, Torres Carlos Rocha Gomes, Pucci Cesar Rogério
Department of Restorative Dentistry, Endodontics Division, Institute of Science and Technology, São Paulo State University - UNESP, São José dos Campos, São Paulo, Brazil.
School of Dentistry, University of Maryland, Baltimore, USA.
Int J Dent. 2023 Jul 3;2023:2182651. doi: 10.1155/2023/2182651. eCollection 2023.
This study aimed to evaluate Nd:YAG laser, calcium phosphate, and adhesive system effect as different pretreatments in different protocols on dentin permeability (DP) and bond strength (BS). Fifty human dentin discs were used (4 mm in diameter and 1,5 mm in height). Specimens were divided into five groups ( = 10): (A): adhesive system (control); (AL): adhesive system + Nd:YAG laser; (LAL): Nd:YAG laser + adhesive system + Nd:YAG laser; (PAL): calcium phosphate-based dentin desensitizer TeethMate + adhesive system + Nd:YAG laser; and group (PLAL): Nd:YAG laser + calcium phosphate-based dentin desensitizer + adhesive system + Nd:YAG laser. All materials were used according to the manufacturers' instructions. The specimens were submitted to artificial aging (5,000 thermal cycles and 12 × 10 mechanical cycles) then a bond test was performed. DP was measured using the split chamber model. Data were submitted to one-way analysis of variance (ANOVA), paired -test, RM ANOVA, and Tukey test ( < 0.05). All treatments were effective in DP reduction. For BS, the groups PAL and PLAL had improved BS with a statistically significant difference of the control group (A). Nd:Yag laser irradiation and calcium phosphate-based desensitizing agents significantly reduced DP, and the association between them could improve the BS on resin-human dentin interface.
本研究旨在评估钕钇铝石榴石（Nd:YAG）激光、磷酸钙和粘结系统作为不同预处理方法，在不同方案下对牙本质渗透性（DP）和粘结强度（BS）的影响。使用了50个人类牙本质圆盘（直径4毫米，高度1.5毫米）。样本分为五组（每组n = 10）：（A）：粘结系统（对照组）；（AL）：粘结系统 + Nd:YAG激光；（LAL）：Nd:YAG激光 + 粘结系统 + Nd:YAG激光；（PAL）：磷酸钙基牙本质脱敏剂TeethMate + 粘结系统 + Nd:YAG激光；以及（PLAL）组：Nd:YAG激光 + 磷酸钙基牙本质脱敏剂 + 粘结系统 + Nd:YAG激光。所有材料均按照制造商的说明使用。样本经过人工老化处理（5000次热循环和12×10次机械循环），然后进行粘结测试。使用分室模型测量DP。数据进行单因素方差分析（ANOVA）、配对t检验、重复测量方差分析（RM ANOVA）和Tukey检验（P < 0.05）。所有处理在降低DP方面均有效。对于BS，PAL组和PLAL组的BS有所提高，与对照组（A）有统计学显著差异。Nd:Yag激光照射和磷酸钙基脱敏剂显著降低了DP，它们之间的联合使用可改善树脂 - 人类牙本质界面的BS。
