Kabiri Sattar, Neshati Ammar, Rohani Bita
Aja University of Medical Sciences, Tehran, Iran; Department of Orthodontics, School of Dentistry, Shahrekord University of Medical Sciences, Shahrekord, Iran.
Department of Prosthodontics, Faculty of Dentistry, Aja University of Medical Sciences, Tehran, Iran.
Front Dent. 2021 Jul 23;18:26. doi: 10.18502/fid.v18i26.6936. eCollection 2021.
The aim of this study was to assess the shear bond strength (SBS) of zirconia ceramic to composite resin with various surface treatments following pressure changes. Totally, 135 zirconia blocks were prepared by computer-aided design/computer-aided manufacturing technology. The samples were divided into 9 groups (n=15). Three surface treatments including sandblasting, tribo-chemical preparation, and laser application were used. For each method, 45 samples were considered and tested under different pressure conditions. Z-Prime Plus primer was used for bonding of all samples to composite cylinders. All specimens were stored in water for 24 h, underwent thermocycling, and were then placed in a pressure chamber under normal-, high-, and low-pressure conditions. Then, the SBS test was performed for each sample. Data were analyzed by two-way and one-way ANOVA (α=0.05). The SBS was significantly higher in sandblasting and tribochemical preparation compared with laser irradiation (P<0.05). There was no statistically significant difference in SBS of sandblasting and tribochemical preparation methods (P>0.05). Sandblasting, tribochemical preparation, and laser methods did not show a significant difference in SBS at different pressures (P>0.05). Sandblasting and tribochemical preparation yielded a higher SBS than laser. Different pressures had no effect on SBS, irrespective of surface preparation method.
本研究的目的是评估在压力变化后，经过各种表面处理的氧化锆陶瓷与复合树脂之间的剪切粘结强度（SBS）。总共通过计算机辅助设计/计算机辅助制造技术制备了135个氧化锆块。将样品分为9组（n = 15）。使用了三种表面处理方法，包括喷砂、摩擦化学处理和激光处理。对于每种方法，考虑45个样品并在不同压力条件下进行测试。所有样品均使用Z-Prime Plus底漆与复合圆柱体粘结。所有标本在水中储存24小时，进行热循环，然后置于常压、高压和低压条件下的压力室中。然后，对每个样品进行SBS测试。数据通过双向和单向方差分析进行分析（α = 0.05）。与激光照射相比，喷砂和摩擦化学处理的SBS显著更高（P < 0.05）。喷砂和摩擦化学处理方法的SBS没有统计学上的显著差异（P > 0.05）。喷砂、摩擦化学处理和激光方法在不同压力下的SBS没有显著差异（P > 0.05）。喷砂和摩擦化学处理产生的SBS高于激光处理。无论表面处理方法如何，不同压力对SBS均无影响。
