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.
作者
魏天骄
廖国婷
王柳力
郭欣
冯剑桥
WEI Tianjiao;LIAO Guoting;WANG Liuli;GUO Xin;FENG Jianqiao.(Department of Prosthodontics, School of Stomatology, Harbin Medical University , Harbin 150001, China)
出处
《口腔医学》
CAS
2018年第3期249-254,共6页
Stomatology
关键词
3D打印
美学模板
边缘适合性
3D printing
aesthetic template
marginal adaptation
