Earticle

초록

영어

Purpose: This in vitro study aimed to compare the trueness of 3-unit fixed dental provisional prostheses (FDPs) fabricated by three different additive manufacturing and subtractive manufacturing procedures. Methods: A reference model with a maxillary left second premolar and the second molar prepped and the first molar missing was scanned for the fabrication of 3-unit FDPs. An anatomically shaped 3-unit FDP was designed on computer-aided design software. 10 FDPs were fabricated by subtractive (MI group) and additive manufacturing (stereolithography: SL group, digital light processing: DL group, liquid crystal displays: LC group) methods, respectively (N=40). All FDPs were scanned and exported to the standard triangulated language file. A three-dimensional analysis program measured the discrepancy of the internal, margin, and pontic base area. As for the comparison among manufacturing procedures, the Kruskal–Wallis test and the Mann–Whitney test with Bonferroni correction were evaluated statistically. Results: Regarding the internal area, the root mean square (RMS) value of the 3-unit FDPs was the lowest in the MI group (31.79±6.39 μm) and the highest in the SL group (69.34±29.88 μm; p=0.001). In the marginal area, those of the 3-unit FDPs were the lowest in the LC group (25.39±4.36 μm) and the highest in the SL group (48.94±18.98 μm; p=0.001). In the pontic base area, those of the 3-unit FDPs were the lowest in the LC group (8.72±2.74 μm) and the highest in the DL group (20.75±2.03 μm; p=0.001). Conclusion: A statistically significant difference was observed in the RMS mean values of all the groups. However, in comparison to the subtractive manufacturing method, all measurement areas of 3-unit FDPs fabricated by three different additive manufacturing methods are within a clinically acceptable range.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
1. 실험 모형 선택 및 시편 디자인
2. 시편 제작
3. 3D 중첩 및 통계분석
RESULTS
DISCUSSION
CONCLUSIONS
FUNDING
ACKNOWLEDGEMENTS
CONFLICT OF INTEREST
ORCID
REFERENCES

키워드

저자

• 이혁준 [ Hyuk-Joon Lee | 고려대학교 일반대학원 보건과학과 치의기공학전공, 고려대학교 4단계 BK21 러닝헬스시스템융합사업단 ]
• 이하빈 [ Ha-Bin Lee | 고려대학교 일반대학원 보건과학과 치의기공학전공, 고려대학교 4단계 BK21 러닝헬스시스템융합사업단 ]
• 노미준 [ Mi-Jun Noh | 고려대학교 일반대학원 보건과학과 치의기공학전공, 고려대학교 4단계 BK21 러닝헬스시스템융합사업단 ]
• 김지환 [ Ji-Hwan Kim | 고려대학교 일반대학원 보건과학과 치의기공학전공, 고려대학교 4단계 BK21 러닝헬스시스템융합사업단 ] 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