Earticle

초록

영어

Purpose: This study was conducted to comparative evaluate the marginal and internal gap of three-unit metal frameworks(Co-Cr) fabricated by wax milling method and digital light projection method of CAD/CAM systems. Methods: All the specimens were fabricated by three different fabrication methods: conventional wax up with casting(CWC), milled wax block with casting(MWC), digital light projection with casting(DLPC) (n=10 each). The marginal and internal fits of specimens were examined using a replica technique. The light-body silicone thickness was measured at 8 reference points(each abutment: 16 measurements). All measurements were conducted by a stereomicroscope. Digital photo were taken at 150× magnification and then analyzed using a measurement software. The Mann-Whitney test was used for analyzing the results. Results: Statistically significant differences were found between the fabrication methods(p<0.001). The mean(SD) is μm for fabrication methods, the mean marginal fit were recorded respectively, CWC 63(38), MWC group 50(33), DLPC 103(54) and the mean internal fit CWC 96(47), MWC group 116(41), DLPC 138(66). Conclusion : The marginal and internal fit were statistically different according to the fabrication methods(p<0.001). In all fabrication methods, the greatest misfit was found the occlusal area of all specimens.

목차

[Abstract]
I. 서론
II. 연구 방법
1. 주모형의 설계 및 제작
2. 작업모형의 제작
3. 3본 금속 구조물의 제작
4. 시편의 적합도 측정
5. 통계적 분석
III. 결과
1. 제작방법에 따른 비교 분석
2. 측정 영역별 적합도 비교분석
3. 절단 방향과 지대치의 위치에 따른 비교 분석
4. 주조 전·후의 적합도 비교
IV. 고찰
V. 결론
References

키워드

저자

• 이정환 [ Jung-Hwan Lee | 광주보건대학교 치기공과 ]
• 안재석 [ Jae-Seok Ahn | 광주보건대학교 치기공과 ] 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