Earticle

초록

영어

Purpose: The aim of this study was to investigate the influence of short and long duration sintering on microstructure and flexural strength of zirconia. Methods: To conduct three-point bending test, Zirconia specimens are milled according to ISO 6872 guidelines(N=18, n=9 per group). Two specimens group(n=8) is sintered for 10 hours(Standard schedule) and 3 hours(Speed schedule) at the peak temperature of 1550°C with silicon carbide sintering furnace. Flexural strength of specimens are measured by instron. After coating each specimen(n=1), microstructure of specimens is observed using Scanning Electron Microscope(SEM). T-test was utilized to statistically assess the data. Results: The mean and standard deviation value of the flexural strength for standard schedule group are 578.15±57.48Mpa, that of speed schedule are 465.9±62.34Mpa. T-test showed significant differences in flexural strength between two zirconia specimen group which applied standard schedule and speed schedule respectively(p<0.05). Conclusion: The result of this study showed that the increase in sintering time led to increased grain size, and also to a positive effect on the flexural strength.

목차

[Abstract]
I. 서론
Ⅱ. 연구 방법 
1. 시편 제작
2. 굴곡 강도 측정
3. 미세구조 관찰
4. 통계분석
Ⅲ. 결과
1. 굴곡 강도
2. 미세구조
Ⅳ. 고찰
Ⅴ. 결론
REFERENCES

키워드

저자

• 이하빈 [ Ha-Bin Lee | 고려대학교 대학원 보건과학과 치의기공전공 ]
• 이태희 [ Tae-Hee Lee | 고려대학교 대학원 보건과학과 치의기공전공 ]
• 김지환 [ Ji-Hwan Kim | 고려대학교 대학원 보건과학과 치의기공전공 ] 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