In vitro accuracies of 3D printed models manufactured by two different printing technologies

Authors : Faruk EMİR, Gülsüm CEYLAN, Simel AYYILDIZ

Pages : 80-85

Doi:10.26650/eor.20210060

View : 14 | Download : 8

Publication Date : 2021-06-28

Article Type : Research Paper

Abstract :Purpose This study aims to compare the accuracies of full-arch models printed by two different 3D printing technologies. Materials and Methods A mandibular horseshoe-shaped master model was designed with RapidForm XOR2 software The master model was printed 10 times with 3D printers using direct light processing insert ignore into journalissuearticles values(DLP); and PolyJet technology insert ignore into journalissuearticles values(n=20);. The printed models were then scanned with an industrial scanner and saved in STL file. All digital models superimposed with the master model STL file and comparison of the trueness was performed using Geomagic Control 3D analysis software. The precision was calculated by superimposing combinations of the 10 data sets in each group. Results The trueness of printed models was 46 μm for the DLP printer and 51 μm for PolyJet printer; however, this difference was not statistically significant insert ignore into journalissuearticles values(p=0.155);. The precision of printed models was 43 μm for the DLP printer and 54 μm for PolyJet printer. DLP printed models were more precise than the PolyJet printed models insert ignore into journalissuearticles values(p<0.001);. Conclusion The 3D printing technologies showed significant differences in the trueness of full-arch measurements. Although DLP printed models had better trueness than PolyJet printed models, all of the 3D printed models were clinically acceptable and might be used for the production of fixed restorations.
Keywords : 3D printing, Direct light processing, Polyjet, Trueness, Precision