Zakavi Faramarz, Mombeini Mehrnoosh, Dibazar Sana, Gholizadeh Sarah
Assistant Professor, Operative and Esthetic Dentistry ,Dental Faculty, Ahvaz Jundishapur Medical Science University, Ahvaz, Iran.
Assistant Professor, Operative and Esthetic Dentistry, Dental Faculty, Khorram Abad University of Medical science, Khorram Abad, Iran.
J Clin Exp Dent. 2019 Mar 1;11(3):e257-e263. doi: 10.4317/jced.55428. eCollection 2019 Mar.
To evaluate shear bond strength of zirconia to composite resin using different universal and conventional adhesives and a zirconia primer.
Forty zirconia blocks were fabricated of zirconium ingots (10×10×5 mm) and sintered at 1530°C for 2 hours. They were then air-abraded with Al2O3 particles. The specimens were divided into 4 groups and subjected to one of the following bonding agents: Futurabond U (group 1), Clearfil Universal Bond, universal adhesives (group 2), Z-Prime Plus, zirconia primer (group 3) and Adper Single Bond 2, conventional adhesive (group 4). Composite resin was then applied in a diameter of 5 mm and in a thickness of 2 mm. All the specimens were stored in distilled water at 37°C for 24 hours and then thermocycled between 5°C and 55°C for 5000 cycles with a 30-second dwell time. The shear bond strength was then evaluated with a universal testing machine at a crosshead speed of 1 mm/min. Data (MPa) were analyzed using ANOVA and LSD test (≤0.05). The specimens were evaluated under a stereomicroscope to determine the mode of failure.
The mean shear bond strength was 16,874 MPa in group I, 13.4434 MPa in group II, 11.6500 MPa in group III and 6.8700 MPa in group IV. ANOVA revealed that the shear bond strength in group IV was significantly lower than that in other groups (≤0.05).
The shear bond strength in group I was significantly higher than that in groups III and IV. So Universal adhesives could provide higher shear bond strength of zirconia to composite resin after thermocycling compared to zirconia primers. 10-MDP, shear bond strength, universal adhesive systems, zirconia primer.
使用不同的通用型和传统型粘合剂以及一种氧化锆底漆，评估氧化锆与复合树脂之间的剪切粘结强度。
用锆锭制作40个氧化锆块（10×10×5毫米），并在1530°C下烧结2小时。然后用氧化铝颗粒进行空气喷砂处理。将标本分为4组，并使用以下粘合剂之一进行处理：Futurabond U（第1组）、Clearfil Universal Bond通用粘合剂（第2组）、Z-Prime Plus氧化锆底漆（第3组）和Adper Single Bond 2传统粘合剂（第4组）。然后施加直径为5毫米、厚度为2毫米的复合树脂。所有标本在37°C的蒸馏水中储存24小时，然后在5°C至55°C之间进行5000次热循环，保压时间为30秒。然后使用万能试验机以1毫米/分钟的十字头速度评估剪切粘结强度。使用方差分析和LSD检验（≤0.05）分析数据（MPa）。在立体显微镜下评估标本以确定失效模式。
第1组的平均剪切粘结强度为16.874 MPa，第2组为13.4434 MPa，第3组为11.6500 MPa，第4组为6.8700 MPa。方差分析显示，第4组的剪切粘结强度明显低于其他组（≤0.05）。
第1组的剪切粘结强度明显高于第3组和第4组。因此，与氧化锆底漆相比，通用粘合剂在热循环后能为氧化锆与复合树脂提供更高的剪切粘结强度。10-甲基丙烯酰氧基癸基二氢磷酸酯、剪切粘结强度、通用粘合剂系统、氧化锆底漆。
