일반형 및 보급형 레진 기반 인레이 치형 모델의 3D 프린팅 정확도 비교
Comparative accuracy assessment of dental models (inlay) 3D-printed with conventional and economical resin materials
Purpose: This study aimed to evaluate the trueness of models fabricated by a digital light processing (DLP) three-dimensional (3D) printer using two different types of resins. Methods: A typodont model with a Class II cavity on the mandibular right first molar was scanned using a dental model scanner. The data were digitally edited using computer-aided design (CAD) software and saved as standard tessellation language reference files. Specimens were printed using two resins, DTM (DentaMODEL, Asiga) and MXE (Model XE, Rayshape), with a DLP 3D printer at a 75-μm layer thickness. A total of 20 specimens were scanned and analyzed using 3D inspection software. Trueness was evaluated via best-fit alignment and measured as the root mean square (RMS) value. Color deviation maps were employed for qualitative assessment. Statistical analysis was performed using an independent t-test (p<0.05). Results: For the internal surface, the RMS value of the DTM group was 19.30±4.52 μm, whereas that of the MXE group was 17.07±1.43 μm. For the margin, the DTM group showed an RMS value of 22.86±3.26 μm, whereas the MXE group showed 18.73±1.67 μm. No statistically significant difference was observed between the groups for the internal surface (p=0.155); however, the MXE group demonstrated significantly higher trueness in the marginal area (p=0.002). Conclusion: Both the DTM and MXE resins demonstrated high dimensional accuracy with clinically acceptable trueness, supporting the applicability of economical resins in dental 3D printing.
목차
Abstract INTRODUCTION MATERIALS AND METHODS 1. 연구 시편 제작 2. 3차원 정확도 분석 3. 통계 분석 RESULTS DISCUSSION CONCLUSIONS FUNDING ACKNOWLEDGEMENTS CONFLICT OF INTEREST ORCID REFERENCES
키워드
3D printingAccuracyDental modelDental inlayTrueness
저자
조미향 [ Mi-Hyang Cho | 원광보건대학교 치기공과 ]
이하빈 [ Ha-Bin Lee | 연성대학교 치기공과 ]
Corresponding Author