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Precision and trueness of dental models manufactured with different 3-dimensional printing techniques

Authors
 Soo-Yeon Kim  ;  Yoo-Seok Shin  ;  Hwi-Dong Jung  ;  Chung-Ju Hwang  ;  Hyoung-Seon Baik  ;  Jung-Yul Cha 
Citation
 American Journal of Orthodontics and Dentofacial Orthopedics, Vol.153(1) : 144-153, 2018 
Journal Title
 American Journal of Orthodontics and Dentofacial Orthopedics 
ISSN
 0889-5406 
Issue Date
2018
MeSH
Dental Models/*standards ; Three-Dimensional *Printing
Abstract
INTRODUCTION: In this study, we assessed the precision and trueness of dental models printed with 3-dimensional (3D) printers via different printing techniques. METHODS: Digital reference models were printed 5 times using stereolithography apparatus (SLA), digital light processing (DLP), fused filament fabrication (FFF), and the PolyJet technique. The 3D printed models were scanned and evaluated for tooth, arch, and occlusion measurements. Precision and trueness were analyzed with root mean squares (RMS) for the differences in each measurement. Differences in measurement variables among the 3D printing techniques were analyzed by 1-way analysis of variance (alpha = 0.05). RESULTS: Except in trueness of occlusion measurements, there were significant differences in all measurements among the 4 techniques (P <0.001). For overall tooth measurements, the DLP (76 +/- 14 mum) and PolyJet (68 +/- 9 mum) techniques exhibited significantly different mean RMS values of precision than the SLA (88 +/- 14 mum) and FFF (99 +/- 14 mum) techniques (P <0.05). For overall arch measurements, the SLA (176 +/- 73 mum) had significantly different RMS values than the DLP (74 +/- 34 mum), FFF (89 +/- 34 mum), and PolyJet (69 +/- 18 mum) techniques (P <0.05). For overall occlusion measurements, the FFF (170 +/- 55 mum) exhibited significantly different RMS values than the SLA (94 +/- 33 mum), DLP (120 +/- 28 mum), and PolyJet (96 +/- 33 mum) techniques (P <0.05). There were significant differences in mean RMS values of trueness of overall tooth measurements among all 4 techniques: SLA (107 +/- 11 mum), DLP (143 +/- 8 mum), FFF (188 +/- 14 mum), and PolyJet (78 +/- 9 mum) (P <0.05). For overall arch measurements, the SLA (141 +/- 35 mum) and PolyJet (86 +/- 17 mum) techniques exhibited significantly different mean RMS values of trueness than DLP (469 +/- 49 mum) and FFF (409 +/- 36 mum) (P <0.05). CONCLUSIONS: The 3D printing techniques showed significant differences in precision of all measurements and in trueness of tooth and arch measurements. The PolyJet and DLP techniques were more precise than the FFF and SLA techniques, with the PolyJet technique having the highest accuracy.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/162523
Full Text
https://www.sciencedirect.com/science/article/pii/S0889540617306479
DOI
10.1016/j.ajodo.2017.05.025
Appears in Collections:
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실)
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실)
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Surgery (구강악안면외과학교실)
Yonsei Authors
백형선(Baik, Hyoung Seon)
신유석(Shin, Yoo Seok) ORCID logo https://orcid.org/0000-0003-1121-2570
정휘동(Jung, Hwi Dong)
차정열(Cha, Jung Yul)
황충주(Hwang, Chung Ju)
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