数字化制作树脂暂时冠与Protemp 4树脂暂时冠边缘密合性的比较  

Comparison of marginal gaps between digital and Protemp 4 resin temporary crowns

作　　者：魏裕 张静莹 何晓玲 WEI Yu;ZHANG Jing-ying;HE Xiao-ling(Department of Stomatology,Second Clinical Medical School,Guangdong Medical University,Dongguan 523808,China)

机构地区：[1]广东医科大学第二临床医学院口腔系,广东东莞523820

出　　处：《广东医科大学学报》2022年第6期671-675,共5页Journal of Guangdong Medical University

摘　　要：目的比较数字化制作树脂暂时冠与Protemp 4树脂暂时冠边缘密合性的差异。方法90个右上中切牙按全瓷冠预备原则进行牙体预备,分别用CAD/CAM切削、3D打印和Protemp 4制作树脂暂时冠;记录暂时冠的制作时间,体式显微镜观察树脂冠与树脂牙的边缘间隙宽度。结果CAD/CAM切削、3D打印和Protemp 4树脂暂时冠的边缘间隙分别为(90.71±1.86)、(89.97±1.93)、(214.81±2.09)μm,CAD/CAM切削、3D打印树脂暂时冠的边缘间隙小于Protemp 4树脂暂时冠(P<0.01)。制CAD/CAM切削、3D打印和Protemp 4树脂暂时冠的时间分别为(25.60±1.11)、(25.44±0.83)、(24.99±0.77)min,CAD/CAM切削树脂暂时冠的制作时间大于Protemp 4树脂暂时冠制作时间(P<0.05)。结论数字化制作的树脂暂时冠边缘密合性优于Protemp 4树脂暂时冠。Objective To compare the marginal gaps between digital and Protemp 4 resin temporary crowns(RTCs).Methods Ninety right upper central incisors were prepared according to the principle of all-ceramic crown preparation,and their RTCs were respectively made by CAD/CAM milling,3D printing and Protemp 4.The production time of three different methods was recorded.The width of marginal gaps between RTCs and resin teeth was observed by stereomicroscopy.Results The average marginal gaps of CAD/CAM milling,3D printing and Protemp 4 RTCs were(90.71±1.86),(89.97±1.93)and(214.81±2.09)μm,respectively;of which that of CAD/CAM cutting and 3D printing were lower than that of Protemp 4(P<0.01).The production times of CAD/CAM cutting,3D printing and Protemp 4 RTCs were(25.60±1.11),(25.44±0.83),(24.99±0.77)min,respectively;of which that of CAD/CAM cutting was longer than that of Protemp 4(P<0.05).Conclusion The marginal gaps of digital RTCs are superior to those of Protemp 4 RTCs.

关 键 词：暂时冠 边缘密合性 CAD/CAM 3D打印 

分 类 号：R781[医药卫生—口腔医学]