摘要
目的:研究Gluma脱敏剂对不同粘接剂粘接强度的影响。方法:将24颗新鲜离体牙预备出牙本质面,分2组,分别用粘接剂(VitremerTM树脂基玻璃离子粘接剂、聚羧酸锌水门汀)将镍铬合金接头粘于表面(粘接前每组中均有6颗牙经Gluma脱敏剂处理),置37℃蒸馏水中24 h,电子拉力实验机作拉伸测试(1 mm/min)。另选24颗离体牙,同法制取试件作剪切测试。结果:经Gluma脱敏剂处理后,VitremerTM粘接剂的拉伸、剪切强度均增高(P<0.05),PC的拉伸强度增高无显著性(P>0.05)。结论:Gluma脱敏剂对VitremerTM粘接剂和PC的粘接效果无不良影响。
Objective： To evaluate the effect of Gluma desensitizer on bond strength of different dental cements in vitro. Methods： Twenty-four fleshly extracted human molars were prepared to flat-dentin and cemented at random to testing specimens made of Nickel-Chromium alloy respectively by VitremerTM resin-modified glass ionomer cement and polycarboxylate cement （PC）, twelve in each group. Six teeth of each group were treated by Gluma desensitizer before cementation. All samples were stored in distilled water at 37 ℃ for 24 hours, and then they were tested on a universal testing machine （1 mm/min） for tensile bond strength （TBS）. The above procedure was repeated for shear bond strength （SBS） with another twenty-four molars. Results： Application of Gluma desensitizer significantly increased the TBS and SBS of VitremerTM luting cement （ P 〈 0.05）. The TBS and the SBS of PC were also slightly increased, but the changes in TBS had no statistical significance （P 〉 0.05）. Conclusion： Gluma desensitizer has no negative impacts on the bond strength of Vitremer^TM luting cement and PC.
出处
《山东大学学报（医学版）》
CAS
北大核心
2007年第6期629-631,共3页
Journal of Shandong University:Health Sciences
基金
四川省科技攻关计划项目(D102SG022-021)
