多余树脂粘接剂清除方法对不同边缘间隙全瓷冠边缘完整性的影响  

Effect of excess resin adhesive removal method on the marginal integrity of all-ceramic crowns with different marginal gaps

作　　者：张海洋[1] 刘建彰[2] 阚娜 李红霞 王俊丰[5] 姜海巍[1] 邱澄宇[1] 肖震[1] Zhang Haiyang;Liu Jianzhang;Kan Na;Li Hongxia;Wang Junfeng;Jiang Haiwei;Qiu Chengyu;Xiao Zhen(Department of Prosthodontics,No.1 Hospital in Qiqihar,Qiqihar 161000,Heilongjiang Province,China;Department of Prosthodontics,School of Stomatology,Peking University,Beijing 100081,China;Lianyungang Maternal and Child Health Care Hospital,Lianyungang 222000,Jiangsu Province,China;Second General Department of Ruitai Stomatology Hospital,Beijing 100191,China;Department of Stomatology of Qinhuangdao Second Hospital,Qinhuangdao 066000,Hebei Province,China)

机构地区：[1]齐齐哈尔市第一医院口腔修复科,黑龙江省齐齐哈尔市161000 [2]北京大学口腔医学院口腔修复科,北京市100081 [3]连云港市妇幼保健院,江苏省连云港市222000 [4]北京瑞泰口腔医院综合二科,北京市100191 [5]秦皇岛市第二医院口腔科,河北省秦皇岛市066000

出　　处：《中国组织工程研究》2021年第28期4480-4484,共5页Chinese Journal of Tissue Engineering Research

基　　金：齐齐哈尔市科学技术局项目(SFZD-2016054),项目负责人:张海洋。

摘　　要：背景:国内外有很多关于不同树脂粘接剂、不同肩台形状、不同聚合角度等对全瓷冠边缘完整性影响的研究,但关于多余粘接剂不同处理方法对全瓷冠边缘完整性影响的研究较少。目的:分析多余树脂粘接剂清除方法对不同边缘间隙全瓷冠边缘完整性的影响。方法:制备40颗离体第三磨牙全瓷冠,随机分成A、B、C、D组,每组10颗。模型扫描完成后,由计算机控制将A、B、C组修复体边缘分别按30,60,90μm上提,D组不上提边缘,制作Procera氧化铝CAD-CAM全瓷冠。再将A、B、C、D组内随机分2小组,一组全冠粘接就位后,用小毛刷去除大量的多余树脂粘接剂后光照40 s,再用镰形刮治器刮除少量树脂粘接剂(小毛刷组);另一组先光照大量溢出的多余粘接剂2 s,用镰形刮治器刮除,再光照40 s(大镰刀组)。扫描电镜观测标本边缘完整性及粘固剂表面质量。结果与结论:①扫描电镜显示,小毛刷组粘接界面的连续性均较好,镰刀组均有不同程度的粘接缺损;在相边缘间隙下,小毛刷组粘固剂缺损率小于大镰刀组(P<0.05);在相同粘接剂清除方法下,A、B、C、D组间的粘固剂缺损率比较差异无显著性意义(P﹥0.05);②结果表明,先使用小毛刷去除多余粘接剂后再光照40 s,最后用镰形刮治器去除剩余少量粘接剂的方法更适用于临床。BACKGROUND:There are many studies on the marginal integrity of all ceramic crowns with different resin adhesives,or different shoulder,different polymerization angles,but there is no research on whether different methods of redundant bonding will affect the marginal integrity of all ceramic crowns.OBJECTIVE:To analyze the effect of removing excess resin adhesive on the marginal integrity of all ceramic crowns with different marginal gaps.METHODS:Totally 40 extracted third molars were prepared with all ceramic crowns and randomly divided into groups A,B,C,and D(10 teeth in each group).After the model scanning was completed,the edges of restoration in groups A,B and C were lifted at 30,60 and 90μm respectively by computer control,while those in group D were not raised.Procera alumina CAD-CAM all ceramic crowns were made.Then,the four groups of groups A,B,C and D were randomly divided into two subgroups.In one subgroup,a large amount of excess resin adhesive was removed with a small brush,and then the light was illuminated for 40 seconds after the full crown bonding.Subsequently,a small amount of resin adhesive was scraped off with sickle scalpel(small brush group).The sample in the other subgroup was exposed to light for 2 seconds,scraped off with sickle scalpel,and then illuminated for 40 seconds(sickle group).The marginal integrity and surface quality of the adhesive were observed by scanning electron microscope.RESULTS AND CONCLUSION:(1)Scanning electron microscope showed that the continuity of the bonding interface was better in the small brush group.Different degrees of adhesive defects were found in the sickle group.Under the same marginal gap,the defect rate of cement in the small brush group was lower than that in the sickle group(P<0.05).Under the same adhesive removal method,there was no significant difference in the defect rate of cement between groups A,B,C,and D(P>0.05).(2)Results indicate that the method of using small brush to remove excess adhesive,then lighting for 40 seconds,and finally using sic

关 键 词：材料 口腔 边缘完整性 全瓷冠 粘接剂 树脂粘接剂 组织工程 粘接剂表面质量 

分 类 号：R459.9[医药卫生—治疗学] R318.08[医药卫生—临床医学]