COMPARISON OF DIMENSIONAL ACCURACY BETWEEN PROFESSIONAL DLP AND CONSUMER LCD 3D PRINTERS FOR DENTAL MODEL FABRICATION

Alexandru-Victor Burde, Michel Beyer, Marius Ciprian Manole, Rareș Mario Borșa, Sabina-Gabriela Crețu, Mihaela Hedeșiu, Cosmin Sinescu

ABSTRACT

Aim of the study: The aim of this study was to compare the dimensional accuracy of dental models fabricated using a medical-grade DLP printer and a consumer-grade LCD printer. Materials and methods: Standardized maxillary and mandibular STL models were printed using a DLP system (Bego Varseo S) and an LCD system (Phrozen Mini 8K S). A total of 20 models were digitized and compared with the reference files using three-dimensional surface deviation analysis. Dimensional trueness was assessed using root mean square (RMS) and squared mean surface distance (SMSD) metrics, followed by non-parametric statistical analysis. Results: Both systems produced comparable dimensional accuracy, with no statistically significant differences in RMS or SMSD values between groups. Maxillary models showed higher deviations than mandibular models for both technologies. A strong correlation was observed between RMS and SMSD values. Conclusions: Within the limitations of this study, consumer-grade LCD printing demonstrated dimensional accuracy comparable to that of a medical-grade DLP system for dental model fabrication.

DOI: 10.62610/RJOR.2025.1.18.9