Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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A study on the transmittance due to thickness of zirconium core

지르코니아 코어의 두께에 따른 분광광도계 투과율에 관한 연구

  • Jung, In-Ho (Department of Dental Technology, Gimcheon University) ;
  • Park, Myung-Ja (Department of Dental Technology, Gimcheon University) ;
  • Kim, Joo-Won (Department of Dental Hygiene, Sorabol College)
  • Received : 2011.03.28
  • Accepted : 2011.06.24
  • Published : 2011.06.30
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Abstract

Purpose: The purpose of this study was to investigate the transmittance differences of zirconium core due to thickness within the visible light spectrum. Methods: 36 specimens were divided into 3 groups (0.6mm, 0.8mm, 1.0mm) which have each 12 specimens. The size of specimens was 10mm high and 10mm wide. The transmittance of specimens are measured by spectrophotometer Model Cary 500 that can measure infrared-ray, visible wave and ultraviolet-ray. Results: The results shows that there was no significant difference between specimen's thickness and transmittance. Conclusion: The individual's color perception is personal and there are numerous factors that influence on it. In general, human eye can perceive the color of thing only within visible light spectrum but in this experiment through spectrophotometer there was no big difference between specimen's thickness and transmittance. To sum up, The most important factors were a layed porcelain structure and its thickness rather than core thickness in the porcelain crown.

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References

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  1. 열가압성형도재 코어의 가시광선 투과율에 관한 연구 vol.34, pp.1, 2012, https://doi.org/10.14347/kadt.2012.34.1.001