Evaluation of marginal and internal adaptation of fixed dental restorations on alveolar casts printed with different 3D printers.

Abstract

This in-vitro study evaluates the marginal and internal adaptation of fixed dental restorations created using three different 3D printing technologies: Carbon Digital Light Synthesis™ (Carbon DLS™), Straumann P30, and Formlabs Form 3B+. A reference cast was prepared, digitized, and printed using the respective 3D printers. Measurements of adaptation were conducted utilizing a light microscope.

The findings revealed significant differences in adaptation among the printers, particularly in the incisal buccal regions, with the Carbon DLS™ exhibiting superior performance, achieving the smallest mean marginal gap compared to the others. In contrast, non-significant differences were observed in the middle and cervical regions. The results underscore the importance of selecting suitable 3D printing technology to meet clinical requirements, suggesting that Carbon DLS™ is especially effective for complex dental restorations that require high precision. This study contributes valuable insights into the evolving field of digital dentistry, emphasizing the role of technology in enhancing patient outcomes in dental restorations.

Keywords: Dental Restoration, 3D Printing, Marginal Adaptation, Internal Adaptation, Digital Dentistry, Prosthodontics