双层压膜与3D打印导板在托槽间接粘接中准确性的对比研究-《中国医学物理学杂志》

文章信息/Info

Title:: Comparative study on the accuracy of double laminated film guide and 3D printed guide in indirect bonding

Author(s):: YANG Chunhao; LI Yanfeng; XIA Dong; SHI Tingting; Department of Stomatology, Fourth Medical Center of PLA General Hospital, Beijing 100048, China

Keywords:: Keywords: 3D printed guide double laminated film guide indirect bonding accuracy

摘要:: 目的：评估目前双层压膜与3D打印单牙式导板在正畸间接粘接时对托槽定位准确性的差异。方法：利用离体牙按照牙弓形态排牙，标记测量点建立实验模型备用。3D打印组：利用扫描仪取得数字化模型，3Shape正畸软件设计、3D打印制作单牙位导板；双层压膜组：由实验模型翻制石膏工作模型，利用不同厚度的膜片制作双层压膜导板。通过制作的两种间接粘接导板分别将托槽转移定位到实验模型，测量标记点与托槽特定位点间距离，利用SPSS软件对转移前后距离的变化进行统计分析。结果：通过配对t检验分析，3D打印单牙导板与双层压膜导板在托槽粘接准确性无统计学差异（P>0.05）。结论：在上述实验条件下，双层压膜导板与3D打印单牙式导板在辅助托槽间接粘接过程中准确性无明显差异。

Abstract:: Abstract: Objective To evaluate the differences between double laminated film guide and the 3D printed single-tooth guide in the positioning accuracy of bracket for indirect bonding in orthodontics. Methods Use isolated teeth to arrange teeth according to dental arch, and mark measurement points to establish experimental models for use 3D printing group: use scanners to obtain digital models, and use 3Shape orthodontics software to design and 3D printer to make single-tooth guides Double laminated film guide group: experimental models are used to convert to gypsum working models, and diaphragms of different thicknesses are used to make double laminated film guides. The brackets are transferred and positioned to the experimental model through the two indirect bonding guides, the distance between the marked point and the specific point of the bracket are measured, and SPSS software is finally used to perform statistical analysis on the change of distance before and after transfer. Results By paired t-test analysis, there was no statistical difference in the bonding accuracy between the 3D printed single-tooth guide and the double-layer laminating guide in the brackets (P>0.05). Conclusion Under the above experimental conditions, there is no significant difference in accuracy between the double laminated film guide and the 3D printed single-tooth guide in the indirect bonding process of the auxiliary bracket.