Earticle

초록

영어

Purpose: This study was conducted to investigate alloys spectrophotometrically including yttrium of nickel-chromium (Ni-Cr) alloys, which are used as substitutes for the regulation of beryllium and provide helpful improvements in Ni-Cr alloys. Methods: Four groups of specimens (ZN, ZY, SN and EM) were prepared for analysis. Color parameters were measured with a spectrophotometer, and color difference (ΔE*) was calculated. The t-test and one-way analysis of variance test were used to determine significant difference, and the Tukey test was used to identify where the differences were. To measure the spectroscopic reflectivity, the spectroscopic reflectance was measured and converted into CIE L*, a*, b* color system. Results: The ΔE* value of each metal ceramic group after opaque firing of Ni-Cr alloy with and without yttrium was <2, and the total group color difference (ΔE*) was below 1 in the dentin ceramic all experimental group. However, the a* and b* values of the metal ceramic groups were higher than that in the lithium disilicate all ceramic group, and the chroma was higher than the natural tooth. The brightness of all experimental groups was similar to that of the shade guide sample. Conclusion: Yttrium added to Ni-Cr alloys showed similar CIE L*, a*, b* values to Ni-Cr alloys that did not contain yttrium, indicating that yttrium had no effect on color in metallic ceramic systems.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
1. 연구재료
2. 시편제작
3. 측색방법
4. 색차값 계산
5. 통계 분석 방법
RESULTS
DISCUSSION
CONCLUSIONS
ACKNOWLEDGEMENTS
ORCID
REFERENCES

키워드

저자

• 김사임 [ Sa-Im Kim | 쎈 치과기공소 ]
• 김태연 [ Tae-Yeon Kim | 전북대학교 치과대학 치과생체재료학교실 ]
• 김세하 [ Se-Ha Kim | 전북대학교 치과대학 치과생체재료학교실 ]
• 강정규 [ Jeong-Gyu Kang | 광주보건대학교 치기공학과 ]
• 이정환 [ Jung-Hwan Lee | 광주보건대학교 치기공학과 ] 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