3D 프린팅용 의치상 인공치아 인접면 연결부위 두께에 따른 3차원 정확도의 진실도 분석
Trueness analysis of three-dimensional accuracy according to connector thickness of artificial teeth in denture bases fabricated by 3D printing
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영어
Purpose: This study evaluated the accuracy of artificial teeth in three-dimensional (3D)- printed complete dentures according to connector thickness. Methods: Maxillary and mandibular edentulous models were fabricated and scanned. Complete dentures were designed using computer-aided design software, with connector thickness automatically set at three levels: 60% (Group 1), 80% (Group 2), and 100% (Group 3). The artificial teeth were fabricated using a digital light processing 3D printer, followed by post-processing. Each specimen was rescanned, and the obtained data were superimposed onto the reference data using Geomagic software. Trueness was assessed, and statistical analysis was performed using one-way analysis of variance (ANOVA) followed by Tukey’s honestly significant difference post-hoc test (α=0.05). Results: The mean deviations were 106.3±5.1 μm in Group 1, 101.4±5.9 μm in Group 2, and 95.4±6.7 μm in Group 3. One-way ANOVA revealed significant differences among the groups (p<0.001). Tukey’s test showed that Group 1 differed significantly from Groups 2 and 3, whereas no significant difference was observed between Groups 2 and 3. Conclusion: Connector thickness significantly affected the accuracy of 3D-printed complete dentures. Thinner connectors (60%) showed greater deviations, likely due to polymerization shrinkage, whereas thicker connectors (80% and 100%) demonstrated improved stability and accuracy. Clinically, securing at least 80% connector thickness is recommended for optimal denture fabrication.
목차
Abstract INTRODUCTION MATERIALS AND METHODS 1. 주모형 선정 및 스캔 2. 디자인 설계 3. DLP 프린터를 활용한 시편 출력 및 재스캔(re-scan) 4. 3차원 소프트웨어를 사용한 중첩 5. 통계분석 RESULTS DISCUSSION CONCLUSIONS FUNDING ACKNOWLEDGEMENTS CONFLICT OF INTEREST ORCID REFERENCES
키워드
3D printingComplete dentureConnector thicknessPrecisionTrueness
저자
김동연 [ Dong-Yeon Kim | 연성대학교 치기공과 ]
이광영 [ Gwang-Young Lee | 원광보건대학교 치기공과 ]
Corresponding Author