Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies
Source abstract
Abstract
This study evaluates the manufacturing accuracy of Merlon fracture models produced using two vat-photopolymerization-based three-dimensional (3D) printers: digital light processing (DLP) and liquid-crystal display (LCD). The Merlon fracture model is used to assess dimensional precision and machining accuracy. The root mean square (RMS) values, wall and bottom thicknesses, and field-emission scanning electron microscopy images are analyzed. The DLP-based printers exhibit lower RMS values and superior accuracy compared with LCD-based printing and subtractive milling. Polymer-based slurries for permanent dental applications exhibit better dimensional stability than those for temporary restorations. This study also highlights the significant impact of postprocessing and cleaning procedures on the final model accuracy. These findings suggest that optimizing the postprocessing parameters is crucial for enhancing the precision of 3D-printed dental restorations. The Merlon fracture model is a viable method for evaluating additive manufacturing accuracy, contributing to the improved clinical application of vat photopolymerization in dental prosthetics.
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Research context
OpenAlex topics: Additive Manufacturing and 3D Printing Technologies · Manufacturing Process and Optimization · Photopolymerization techniques and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Dental Technology, Bucheon University, 56 Sosa-ro, Bucheon 14774, Republic of Korea
Department of Dental Laboratory Technology, Faculty of Health and Medical Sciences, Wonkwang Health Science University, 514 Iksan-Daero, Iksan 54538, Republic of Korea
Department of Dental Engineering, College of Health Sciences, Honam University, 100 Honamdae-gil, Gwangju 62399, Republic of Korea
Department of Dental Biomaterials and the Institute for Biomaterials and Implant, College of Dentistry, Wonkwang University, 460 Iksan-Daero, Iksan 54538, Republic of Korea
Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, 460 Iksan-Daero, Iksan 54538, Republic of Korea
Funding
Wonkwang University
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