Precision and trueness of maxillary crowded models produced by 2 vat photopolymerization 3-dimensional printing techniques.

Introduction: This cross-sectional study aimed to analyze the precision and trueness of dental models produced using 2 rapid prototyping 3-dimensional printers.

Methods: A digital crowded maxillary arch with a T-shaped base and 2 hemispheres of 2.5 mm radius was printed 10 times with a stereolithography apparatus (SLA) and digital light processing (DLP) in the highest precision and minimum layer thickness (z-resolution) mode.