Abstract

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

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.