ISTANBUL, Turkey: Being able to accurately replicate intra-oral conditions is vital for successful restorative treatments. Although digital workflows have reduced the need for stone casts produced from conventional impressions, for cases that need physical casts, 3D printing is far superior in terms of sustainability in both material wastage and time. Researchers at Biruni University have evaluated how different 3D-printing technologies, specifically digital light processing (DLP) and stereolithography (SLA), as well as printing orientation affect the trueness of 3D-printed definitive casts for various tooth preparations. They found that both the type of 3D printer and the printing orientation significantly influenced trueness.