高压喷涂偶联剂对氧化锆表面微观形貌及粘接效果的影响

Effect of high pressure primer coating protocols on the surface characteristics and zirconia/resin bonding

探讨使用不同压力气体喷涂偶联剂对氧化锆表面形貌及氧化锆-树脂粘合剂粘接强度的影响。烧结、喷砂后的氧化锆瓷片,按偶联剂种类(CP;ZP)和喷涂气体压力的高低(L 0.1 MPa;H 0.3 MPa)随机分为CPL、CPH、ZPL、ZPH 4个实验组及无偶联剂处理的对照组NP(n=15)。各组处理后的氧化锆瓷片利用激光共聚焦显微镜观察5组氧化锆表面形貌并测量粗糙度,并与树脂粘合剂(SA luting)粘接并测试微剪切强度。激光共聚焦显微镜观察显示,CPL和ZPL组中氧化锆表面光滑平坦,CPH、ZPH组的氧化锆表面则保留了高低不平的微观形貌,平均粗糙度明显高于低压气体喷涂组。CPH组的微剪切粘接强度最高(24.82±7.34)MPa,其次为CPL组(17.93±1.53)MPa、ZPL组(15.67±3.39)MPa和ZPH组(9.59±5.97)MPa,对照组最低(8.77±3.12)MPa。偶联剂喷涂压力显著影响氧化锆-树脂粘合剂的粘接强度。,,

The effects of high pressure spraying of primers on the surface appearance of primed zirconia and the bonding strength of zirconia-resin adhesive were investigated.According to the primer type（CP or ZP） and the spraying pressure level（L,0.1 MPa or H,0.3 MPa）,the sintered and sand blasted zirconia ceramic chips are divided into the four experimental groups（CPL,CPU,ZPL and ZPH） and a control group without primer treating（NP）,and each group has 15 speciments.All speciments were bonded with a resin-based luting agent（SA luting） and their micro-shear bonding strength was tested after storagin them in water for 3 days.The laser scanning confocal microscope observation showed that the zirconia surfaces were smooth and flat for CPL and ZPL groups and showed rougher still for CPH and ZPH groups,namely the average roughness for lower pressure spraying was greater than that for higher pressure spraying.The micro-shear bonding strength in CPH group was the highest（24.82±7.34 MPa）,followed by CPL group（17.93±1.53 MPa）,ZPL group（15.67±3.39 MPa） and ZPH group（9.59±5.97 MPa）,the value in the control group was minimum（8.77±3.12 MPa）.The spraying pressure of primers showed significant influence on the bonding strength of zirconia-resin adhesive.