Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies
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...
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MDPI AG
2025-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/10/5595 |
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| author | Hee-jung Lee Chang-sub Jeong Joon-mo Moon Ji-myung Bae Eun-joo Choi Seung-han Oh |
| author_facet | Hee-jung Lee Chang-sub Jeong Joon-mo Moon Ji-myung Bae Eun-joo Choi Seung-han Oh |
| author_sort | Hee-jung Lee |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-ac2b643e13054c9883ec77151b5acd38 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-ac2b643e13054c9883ec77151b5acd382025-08-20T03:47:48ZengMDPI AGApplied Sciences2076-34172025-05-011510559510.3390/app15105595Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing TechnologiesHee-jung Lee0Chang-sub Jeong1Joon-mo Moon2Ji-myung Bae3Eun-joo Choi4Seung-han Oh5Department of Dental Technology, Bucheon University, 56 Sosa-ro, Bucheon 14774, Republic of KoreaDepartment of Dental Laboratory Technology, Faculty of Health and Medical Sciences, Wonkwang Health Science University, 514 Iksan-Daero, Iksan 54538, Republic of KoreaDepartment of Dental Engineering, College of Health Sciences, Honam University, 100 Honamdae-gil, Gwangju 62399, Republic of KoreaDepartment of Dental Biomaterials and the Institute for Biomaterials and Implant, College of Dentistry, Wonkwang University, 460 Iksan-Daero, Iksan 54538, Republic of KoreaDepartment of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, 460 Iksan-Daero, Iksan 54538, Republic of KoreaDepartment of Dental Biomaterials and the Institute for Biomaterials and Implant, College of Dentistry, Wonkwang University, 460 Iksan-Daero, Iksan 54538, Republic of KoreaThis 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.https://www.mdpi.com/2076-3417/15/10/5595vat photopolymerizationmerlon fracture modelroot mean square (RMS)additive manufacturing accuracy |
| spellingShingle | Hee-jung Lee Chang-sub Jeong Joon-mo Moon Ji-myung Bae Eun-joo Choi Seung-han Oh Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies Applied Sciences vat photopolymerization merlon fracture model root mean square (RMS) additive manufacturing accuracy |
| title | Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies |
| title_full | Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies |
| title_fullStr | Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies |
| title_full_unstemmed | Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies |
| title_short | Evaluation of Manufacturing Accuracy in Merlon Fracture Models Fabricated by Vat Photopolymerization 3D-Printing Technologies |
| title_sort | evaluation of manufacturing accuracy in merlon fracture models fabricated by vat photopolymerization 3d printing technologies |
| topic | vat photopolymerization merlon fracture model root mean square (RMS) additive manufacturing accuracy |
| url | https://www.mdpi.com/2076-3417/15/10/5595 |
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