This review explores the current state and recent advancements in 3D printing in dentistry, focusing on vat photopolymerization (VP), the most widely used technology in dental practice. The article discusses three main VP technologies: stereolithography (SLA), digital light processing (DLP), and LCD (mask stereolithography). Each technology is analyzed for its advantages, disadvantages, and limitations. The review emphasizes the importance of postprocessing steps, such as postrinsing and postcuring, to ensure the biocompatibility of custom-made dental devices. Legal and regulatory considerations related to the production of custom medical devices through 3D printing are also addressed. The article serves as a valuable resource for dental practitioners, researchers, and healthcare professionals interested in applying this innovative technology in clinical practice. The three VP technologies differ in their printing speed, accuracy, and ease of use. DLP and LCD technologies are generally faster than SLA, enabling chairside fabrication of restorations in a single session. However, SLA is considered more precise in terms of surface finish and dimensional accuracy. The choice of technology depends on factors such as desired printing speed, ease of use, and the specific resin used. The review also discusses the fundamental principles of VP 3D printing, including the role of the slicer, build orientation, and printing materials. Postprocessing steps, such as rinsing, drying, postcuring, and polishing, are crucial for achieving the desired properties of the printed objects. The review highlights the importance of following manufacturer guidelines and adhering to regulatory requirements to ensure the quality and safety of 3D-printed dental devices. The article concludes that while 3D printing is a promising technology in dentistry, careful consideration of legal, ethical, and technical factors is necessary to ensure its successful application in clinical practice.This review explores the current state and recent advancements in 3D printing in dentistry, focusing on vat photopolymerization (VP), the most widely used technology in dental practice. The article discusses three main VP technologies: stereolithography (SLA), digital light processing (DLP), and LCD (mask stereolithography). Each technology is analyzed for its advantages, disadvantages, and limitations. The review emphasizes the importance of postprocessing steps, such as postrinsing and postcuring, to ensure the biocompatibility of custom-made dental devices. Legal and regulatory considerations related to the production of custom medical devices through 3D printing are also addressed. The article serves as a valuable resource for dental practitioners, researchers, and healthcare professionals interested in applying this innovative technology in clinical practice. The three VP technologies differ in their printing speed, accuracy, and ease of use. DLP and LCD technologies are generally faster than SLA, enabling chairside fabrication of restorations in a single session. However, SLA is considered more precise in terms of surface finish and dimensional accuracy. The choice of technology depends on factors such as desired printing speed, ease of use, and the specific resin used. The review also discusses the fundamental principles of VP 3D printing, including the role of the slicer, build orientation, and printing materials. Postprocessing steps, such as rinsing, drying, postcuring, and polishing, are crucial for achieving the desired properties of the printed objects. The review highlights the importance of following manufacturer guidelines and adhering to regulatory requirements to ensure the quality and safety of 3D-printed dental devices. The article concludes that while 3D printing is a promising technology in dentistry, careful consideration of legal, ethical, and technical factors is necessary to ensure its successful application in clinical practice.