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밀링 공구의 마모가 PMMA 임플란트 임시보철물 변연 및 내면적합도에 미치는 영향
Effect of milling tool wear on the internal fit of PMMA implant interim prosthesis
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- 발행기관
- 대한치과기공학회 바로가기
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- 간행물
- 대한치과기공학회지 KCI 등재 바로가기
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- 통권
- Vol.41 No.2 (2019.06)바로가기
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- 페이지
- pp.63-69
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- 저자
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- 언어
- 한국어(KOR)
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- URL
- https://www.earticle.net/Article/A356516
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원문정보
초록
- 영어
- Purpose: The purpose of this study is to evaluate the effect of CAD/CAM system milling tool wear on the marginal and internal fit of PMMA implant interim prosthesis three-dimensional manner. Methods: A total of 20 crowns were fabricated with CAD/CAM method. Their designs were unified to first molar of the left maxilla. The Customized abutments were prepared and scanned with on optical model scanner. Five crowns were milled by the newly replaced tool (1st milling), and 15 crowns were milled by 2nd, 3rd, 4th milling tool. The marginal and internal fit of 20 interim crowns were measured using the triple-scan protocol. Results: Statistically significant difference was found between the 1st milling group (51.8±14.6μm) and the 3rd, 4th milling group (128.6±43.8μm, 146.2±38.1μm, respectively) at the distal margins. In the mesial margins, There was a statistically significant difference between the 1st milling group (63.6±25.9μm) and the 3rd, 4th milling group (137.2±25.9μm, 186.8±70.6μm, respectively). In the distal line angle, significant difference was found between the 1st, 2nd, 3rd milling groups and the 4th milling group. In the mesial axial wall, significant difference was found between the 1st milling group (52.2±20.3μm) and the 3rd, 4th milling groups (22.8±8.8μm, 7.8±5.7μm). Conclusion: As a result of the experiment, decrease of the marginal and internal fit was statistically significant as the number of machining cycles increased. In order to produce clinically excellent restorations, it is recommandable to consider the condition of the milling tool wear, when designing the restoration with CAD program.
목차
[Abstract]
I. 서론
II. 연구 방법
1. 지대치 제작 및 스캔
2. 크라운 디자인 및 밀링
3. 3차원 측정
4. 통계분석
Ⅲ. 결과
Ⅳ. 고찰
Ⅴ. 결론
REFERENCES
키워드
CAD/CAM triple-scan protocol milling tool PMMA implant interim prosthesis저자
간행물 정보
발행기관
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- 발행기관명
- 대한치과기공학회 [The Korean Academy Of Dental Technology]
- 설립연도
- 1979
- 분야
- 의약학>치의학
- 소개
- 본 학회는 치과기공에 관한 모든 분야의 연구와 회무를 총괄하기 위하여 세분화된 분과학회의 회원 상호간 학술교류와 정보를 수집하고, 보수교육 및 학술대회 준비, 진행과 학회지 발간등의 업무를 효율적으로 수행함을 목적으로 한다.
간행물
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- 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
이 권호 내 다른 논문 / 대한치과기공학회지 Vol.41 No.2
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