Earticle

초록

영어

Purpose: The objective of this study is to find out physical properties and the flexural strength changed by the low temperature degradation of the block which is needed to make bio-prosthetic dentistry which is better than feldspar affiliated ceramic made by building up ceramic powder and also to apply this to the clinical use of zirconia monolithic all-ceramic crown. Methods: Flexural strength of each sample was evaluated before and after the Low Temperature Degradation ,and physical properties of the Tetra Zirconia Block containing 3mol % was evaluated as well. The average and standard deviation of each experimental group were came out of the evaluation. Statistical package for social science 18.0 was used for statistics. Results: The average density of the monolithic all-ceramic crown was 6.0280 0.0147g/cm, the relative density was 99.01 %. When the sample was sintered at 1480 the diameter of average particle was 396.62 33.71nm. All the samples had no monolithic peak after XRD evaluation but only had tetragonal peak. There were statistically significant differences in the result of flexural strength of the samples evaluated after and before the low temperature degradation, the flexural strength before the low temperature degradation was 1747.40 ßÁ, at the temperature of 130 the flexural strength after the low temperature degradation was 1063.99 (p<0.001). There was statistically significant difference in the result of strength of 1020.07 after the low temperature degradation at the temperature of 200 (p<0.001). Conclusion: The block which was made for this evaluation possesses such an excellent strength among dental restorative materials that it is thought to have no problems to use for tetragonal zirconia polycrystal.

목차

[Abstract]
 Ⅰ. 서론
 Ⅱ. 연구 방법
  1. 실험 재료
  2. 단일구조 전부도재관(monolithic all-ceramic crown) block의 실험방법
  3. 저온열화(low temperature degradation) 실험방법
 Ⅲ. 결과
  1. 단일구조 전부도재관(monolithic all-ceramic crown) block의 실험
  2. 저온열화 실험 전·후의 굴곡강도 실험
 Ⅳ. 고찰
 Ⅴ. 결론
 참고문헌

키워드

저자

• 이종화 [ Jong-Hwa Lee | 계명대학교 공중보건학과 ] 교신저자
• 박천만 [ Chun-Man Park | 계명대학교 공중보건학과 ]
• 송재상 [ Jae-sang Song | 김천대학교 치기공학과 ]
• 임시덕 [ Si-Duk Lim | 수성대학교 치기공과 ]
• 김재도 [ Jae-Do Kim | 수성대학교 치기공과 ]
• 김병식 [ Byung-Sik Kim | 수성대학교 치기공과 ]
• 황인환 [ In-Whan Hwang | (주)비케이 메텐트 ]
• 이성국 [ Sung-Kuk Lee | 동원치과기공소 ]

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