3D打印美学模板冠边缘适合性的初步研究  

A preliminary study on the crown marginal adaptation of aesthetic templates made by 3D printing technology

作　　者：魏天骄[1] 廖国婷 王柳力[1] 郭欣[1] 冯剑桥[1] WEI Tianjiao;LIAO Guoting;WANG Liuli;GUO Xin;FENG Jianqiao.(Department of Prosthodontics, School of Stomatology, Harbin Medical University , Harbin 150001, China)

机构地区：[1]哈尔滨医科大学附属口腔医院口腔修复科,黑龙江哈尔滨150001

出　　处：《口腔医学》2018年第3期249-254,共6页Stomatology

摘　　要：目的研究3D打印制作临时美学模板的可行性,并比较其与DMG Luxatemp、自凝树脂制作的美学模板的冠边缘适合性。方法按统一牙体预备标准对3个上颌树脂牙标准模型分别进行2颗、4颗、6颗牙体预备,并翻制超硬石膏模型各26个。分别用3D打印、DMG Luxatemp、自凝树脂制作两联冠、四联冠、六联冠各5个,通过硅橡胶间隙复制法并在体视显微镜下放大40倍测量各组冠边缘间隙值。采用SPSS 20.0软件对实验数据进行统计分析。结果 3D打印组、DMG Luxatemp组、自凝树脂组制作的两联冠、四联冠、六联冠边缘间隙值之间存在显著性差异(P<0.05)。3D打印组边缘间隙值分别为(78.02±0.65)、(78.04±0.66)、(78.48±0.65)μm。DMG Luxatemp组边缘间隙值分别为(101.24±1.61)、(100.71±1.60)、(99.37±1.38)μm。自凝组边缘间隙值分别为(154.62±9.69)、(155.76±4.39)、(152.34±5.21)μm。间隙最小,适合性最好的是3D组,其次是DMG Luxatemp组,间隙最大,适合性最差的是自凝组。而同种方法制作的两联冠、四联冠、六联冠边缘间隙值之间无统计学差异。结论 3D打印制作的临时美学模板冠边缘适合性显著优于DMG Luxatemp和自凝树脂。Objective To study the feasibility of making temporary aesthetic templates with 3D printing, and to compare the marginal adaptation of the aesthetic templates made by DMG Luxatemp and self-curing resin. Methods According to the unified standard of tooth preparation, two units, four units and six units of tooth preparation were made for 3 standard models of maxillary resin teeth, and 26 models of plaster cast were made. 3D printing, DMG Luxatemp and self-curing resin were used to make 5 two-unit crowns ,5 four-u- nit crowns and 5 six-unit crowns respectively. The gap value of each group was measured by the gap replication method of silicone rub- ber and magnified 40 times under the stereo microscope. SPSS20.0 statistical analysis software was used to analyze the experimental da- ta. Results There was a significant difference between the 3D group, DMG Luxatemp group and the self-curing resin group in the val- ue of the gap between two-unit crowns, four-unit crowns and six-unit crowns （P〈0.05）.The edge clearance values of 3D printing group were （78.02±0.65）, （78.04±0.66）and（78.48±0.65）Ixm.The edge clearance values of DMG Luxatemp group were （101.24± 1.61 ）, （100.71±1.60）and（99.37±1.38） μm. The edge clearance values of serf-curing resin group were （154.62±9.69）, （155.76±4.39）and （152.34±5.21） μm. The best marginal adaptation was the 3D group, followed by Luxatemp group, and the worst margianl adaptation was the self-curing group. However, there was no statistical difference in the gap value between the two-unit crowns, the four-unit crowns and the six-unit crowns in the same group. Conclusion The marginal adaptation of the temporary esthetic templates made by 3D printing is better than DMG Luxatemp and self-curing resin.

关 键 词：3D打印 美学模板 边缘适合性 

分 类 号：R783.3[医药卫生—口腔医学]