Earticle

초록

영어

Purpose: This study aimed to compare the marginal and internal fits of metal three-unit fixed dental prosthesis (FDP) cast from wax and resin patterns produced using milling and three-dimensional (3D) printing technologies. Methods: To fabricate three-unit FDPs, the maxillary right first premolar and molar were prepared on an experimental model (AG-3 ZPVK, Frasaco GmbH), which was then duplicated in metal. The metal model was replicated, and working casts were fabricated using a type IV dental stone. These stone models were scanned using a desktop scanner to fabricate virtual models, allowing for the digital design of the three-unit FDPs. Overall, 30 patterns were fabricated using milling and 3D printing technologies (n=15). Subsequently, all patterns were cast into metal FDPs following conventional laboratory procedures. The marginal and internal fits of the fabricated metal FDPs were evaluated by scanning their inner and outer surfaces in situ on the metal model, followed by digital analysis. Differences in the fit between the two groups of FDPs were analyzed using an independent samples t-test (α=0.05). Results: A significant difference in marginal fit was observed between FDPs fabricated using milling and 3D printing technologies (p<0.001). The milling group exhibited superiority to the 3D printing group in terms of marginal fit (p<0.05). Conclusion: For the fabrication of wax patterns, the milling technology showed superiority to the 3D printing technology in terms of marginal fit for metal three-unit FDPs.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
1. Specimen preparation
2. Evaluation of marginal and internal fit
3. Surface evaluation
4. Statistical analysis
RESULTS
1. Evaluation of marginal and internal fit
2. Surface evaluation
DISCUSSION
CONCLUSIONS
FUNDING
ACKNOWLEDGEMENTS
CONFLICT OF INTEREST
ORCID
REFERENCES

키워드

저자

• Yu Jin Kim [ Department of Biohealth Convergence, Meister Master’s Course, Daegu Health College, Daegu, Korea ]
• KeunBaDa Son [ Advanced Dental Device Development Institute (A3DI), School of Dentistry, Kyungpook National University, Daegu, Korea ]
• Ki-Whan Chang [ Department of Biohealth Convergence, Meister Master’s Course, Daegu Health College, Daegu, Korea ]
• Min-Jeong Kim [ Department of Biohealth Convergence, Meister Master’s Course, Daegu Health College, Daegu, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  대한치과기공학회지 [THE JOURNAL OF KOREAN ACADEMY OF DENTAL TECHNOLOGY]

• 간기

  계간

• pISSN

  1229-3954

• eISSN

  2288-5218

• 수록기간

  1979~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 515 DDC 617