Evaluation of wear resistance in 3D printed temporary restorative material using two different printing technologies” - An in vitro study

AIM: This study aimed to assess and compare the wear resistance of 3D printable crown and bridge interim resin material with two different 3D printers. SETTINGS AND DESIGN: In vitro comparative study. MATERIALS AND METHODS: 60 specimens were divided into 2 groups and designed using nx12 (Unigraphics) software. This Standard Tessellation Language file was used to print the specimens. Specimens fabricated using Phrozen Sonic Mini 3D printer of LCD software were grouped as Group A (n = 30), and specimens fabricated using Asiga Max 3D printer of DLP software were grouped as Group B (n = 30). Surface micro roughness measurements (Ra) were noted with a profilometer prior to and following toothbrush wear simulation. The collected data were tabulated to facilitate statistical analysis. STATISTICAL ANALYSIS USED: Student's t-test and Mann-Whitney U-test was employed for multiple comparisions. RESULTS: The Student's t-test was employed to compare the mean surface micro-roughness of Group A and Group B specimens before and after toothbrush wear simulation. The test indicated that there was no significant difference. CONCLUSION: Within the scope of this study, both groups underwent wear and were statistically insignificant.