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CAD/CAM 및 카피밀링 시스템을 이용하여 제작한 구치부 3-유닛 고정성 국소의치의 파절강도
Fracture Strength of All-Ceramic 3-Unit Fixed Partial Dentures Manufactured by CAD/CAM and Copy-Milling Systems
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- 발행기관
- 대한치과기공학회 바로가기
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- 간행물
- 대한치과기공학회지 KCI 등재후보 바로가기
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- 통권
- Vol.34 No.2 (2012.06)바로가기
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- 페이지
- pp.95-103
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- 저자
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- 언어
- 한국어(KOR)
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- URL
- https://www.earticle.net/Article/A177918
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4,000원
원문정보
초록
- 영어
Purpose: Fracture strength of all-ceramic 3-unit fixed partial dentures manufactured by CAD/CAM and copymilling systems were evaluated. Methods: Zirconia cores were made by milling the pre-sintered zirconia block by CAD/CAM or copy milling method followed by subsequent sintering. By building-up the corresponding porcelains on the core, all-ceramic bridges were fabricated, and those were evaluated in comparison with PFM fixed partial denture. Results: During the flexural test of the 3-unit PFM bridge, the porcelain started to chip or break at 507.28( 62.82)kgf and the metal framework did not break until the maximum load level of 800kgf which was set in the testing instrument of this study. However, among all-ceramic restoration test groups, Everest(EV) group showed a peeling off or breakage of the porcelain from 365.64( 64.96)kgf and the core was broken at 491.77( 55.62)kgf. Those values of Zirkonzahn(ZR) were 431.03( 58.47)kgf and 602.74( 48.44)kgf, respectively. The break strength of the porcelain of PFM(PM) group was significantly higher than that of EV (p<0.05) group and there was no significant difference when comparing to that of ZR (p>0.05). ZR group showed higher break strength than that of EV group however there was no significant difference (p>0.05). The break strength of cores were in the increasing order of EV < ZR < PM (p<0.05). Conclusion: We could find that even though the PM group fractured at much higher value than all-ceramic cores, the breakage values of the porcelain of PM group with crack formation or delamination, which will be regarded as clinical failure, was significantly higher than that of EV group and not significantly higher than that of ZR group at p-values of 0.05. The break strength of ZR group was higher than that of EV group at an insignificant level(p>0.05).
목차
[Abstract]
Ⅰ. 서론
Ⅱ. 연구 방법
1. 지대치 금형 제작
2. 구치부 3-유닛 고정성 국소의치 제작
3. 굴곡강도 시험에 의한 파절강도 측정
4. 통계처리
Ⅲ. 결과
Ⅳ. 고찰
Ⅴ. 결론
참고문헌
저자
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.34 No.2
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