Al–Imam H, et al. – The present study sought to compare the accuracy of definitive casts produced with digital scans and conventional impressions. It was observed in the findings that gypsum casts had higher accuracy than stereolithography additive (SLA) casts. Within 50 μm, gypsum casts were superior to Scanbiz SLA casts, while gypsum casts and Dreve SLA casts had similar trueness. Significant differences were observed among the investigated SLA casts used in the digital workflow.