Üç boyutlu yazıcılar tarafından farklı iç yapılara sahip ve farklı malzemeler kullanılarak üretilmiş ortodontik modellerin mekanik özellikleri

In this study, our purpose was to collect data by comparing the effect of the compressive strength on two different polymers, in order to reduce the time and the cost of 3D orthodontic model printing. Our specimens are produced from 'Esun ABS+' brand filament (Acrylonitil, 1-3, butadiene styrene) printed in 'Creality Ender-3 S1 Pro' brand FDM printer and 'Anycubic standard 3d printing resin (1-methyl-1,2ethanediyl) bis[oxy(methyl-2,1-ethanediyl)] diacrylate printed in 'Anycubic Mono X' brand DLP type printer. In our research, two different printing materials ABS and Resin are the two main groups. The subgroups of these two main groups were designed in 'UltiMaker Cura' software as rectangular prisms which are designed as 30%, 60%, 80 % and 100% infill patterns. Printing was carried out with ten samples for each subgroup. With the power analysis, 'G*power 3.1'each group's sample size was planned to be 10. The plastic deformation values of the samples were recorded on the Instron Universal Testing machine. All groups were compared with each other, and the results were statistically analyzed. Between the maximum load averages in the compressive strength of the groups with the 80 % and 100% infill ratio no statistically significant difference was observed. (p=0.097 for ABS, p=0.092). Except this one, between all the other groups statistically significant differences have been observed (p<0.05). As compressive force applied when printing clear aligners is about 0.4 MPa, all groups have enough compressive strength for the 3D orthodontic model production. When 30% infill subgroup was compared with all the other subgroups, statistically significant difference was observed (p<0.05). Similar studies should be conducted in groups with an infill rate below 30% in future research.