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Evaluation of color matching ability according to the color temperature and the experience of practitioner

색 온도 및 술자의 숙련도에 따른 비색 능력 평가 원저

  • Kim, Ji-Hyun (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Kim, Sun-Jai (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Lee, Keun-Woo (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Shim, June-Sung (Department of Prosthodontics, Yonsei University College of Dentistry) ;
  • Yoon, Joonho (Department of Prosthodontics, Yonsei University College of Dentistry)
  • 김지현 (연세대학교 치과대학 보철과학교실) ;
  • 김선재 (연세대학교 치과대학 보철과학교실) ;
  • 이근우 (연세대학교 치과대학 보철과학교실) ;
  • 심준성 (연세대학교 치과대학 보철과학교실) ;
  • 윤준호 (연세대학교 치과대학 보철과학교실)
  • Received : 2012.10.05
  • Accepted : 2012.10.13
  • Published : 2012.10.31

Abstract

Purpose: The aim of this study is to investigate the effect of different experience level and different light source on shade selection ability comparing prosthodontist group and dental student group under 4,000 K and 5,500 K light. Materials and methods: After color difference of Vitapan 3D-master shade guides was measured, 3 sets of 5 shade tabs were selected with similar value but have different chroma (set a, b, c). Also 3 sets of 5 shade tabs were selected with similar chroma but have different values (set d, e, f). Under 4,000 K and 5,500 K light sources, ten prosthodontists and ten dental students were allowed to match in one set of 5 tabs the same shade tab with the tab which was originally selected in the other set of 5 tabs. Color differences of original tab and matched tab were measured by spectrophotometer and the shade selection ability was evaluated with those data. Evaluation of color difference value was performed in regard to different light conditions and different level of experience, followed by t-test with 95% confidence interval. Results: Color difference values under 4,000 K and 5,500 K light source were $1.62{\pm}2.0$, and $1.33{\pm}1.7$ respectively. In addition, color difference values of prosthodontist group and dental student group were $1.34{\pm}1.7$, and $1.61{\pm}2.0$ respectively. Difference of shade selection ability was not found under either different light sources (P=.398), or different experience level (P=.221). Conclusion: Level of experience did not affect on the shade selection ability when prosthodontists and dental students matched the shades with the same shade tab under the same light source.

연구 목적: 4,000 K와 5,500 K의 색 온도를 가진 광원 하에서 치과 보철과 의사 및 치과대학 학생의 색조 비교 및 선택 능력을 평가하여 술자의 경험이 색조 선택에 영향을 주는지를 알아보고자 한다. 연구 대상 및 방법: 분광 광도계를 사용하여 색 견본을 측색한 후, 명도 값이 비슷하고 채도 값이 차이 나는 5개 탭을 선택하여 3개의 세트(a, b, c)를, 채도값이 유사하고 명도값이 차이가 나는 5개 탭을 선택하여 3개의 세트(d, e, f)를 만들었다. 각각 4,000 K, 5,500 K 색 온도의 광원 하에서 무작위로 선택된 한 개의 색 견본을 치과 보철과 의사 10명과 치과대학 학생 10명에게 제시하고 동일한 색 견본을 동일한 세트 내에서 고르게 한 다음, 제시된 색조 탭과 피험자가 선택한 색조 탭 간의 색차(${\Delta}E$) 값을 계산하여 비색 능력의 차이를 비교하였다. 광원의 색 온도 및 술자의 숙련도에 따른, 각각의 색 견본에서의 색차 값을 계산하고 95%의 신뢰 수준에서 t-test 를 시행하여 결과의 유의성을 검정하였다. 결과: 4,000K와 5,500K 광원 하에서 색차 값은 각각 $1.62{\pm}2.0$, $1.33{\pm}1.7$로 색 온도 조건에 따른 색조 선택의 차이는 나타나지 않았다(P=.398). 숙련자군과 비 숙련자군 간의 색차 값은 각각 $1.34{\pm}1.7$, $1.61{\pm}2.0$으로 각 군 간 색조 선택의 차이 또한 나타나지 않았다(P=.221). 결론: 동일한 색 견본을 동일한 광원 조건 하에서 비색하는 경우, 술자의 숙련도에 따른 색조 선택 능력에 차이가 없다.

Keywords

References

  1. Brewer JD, Wee A, Seghi R. Advances in color matching. Dent Clin North Am 2004;48:v, 341-58. https://doi.org/10.1016/j.cden.2004.01.004
  2. Barna GJ, Taylor JW, King GE, Pelleu GB Jr. The influence of selected light intensities on color perception within the color range of natural teeth. J Prosthet Dent 1981;46:450-3. https://doi.org/10.1016/0022-3913(81)90456-X
  3. Wozniak WT, Moser JB. How to improve shade matching in the dental operatory. Council on Dental Materials, Instruments, and Equipment. J Am Dent Assoc 1981;102:209-10. https://doi.org/10.14219/jada.archive.1981.0115
  4. Berns RS, Billmeyer FW, Saltzman M. Billmeyer and Saltzman's principles of color technology. 3rd ed. New York; Chichester: Wiley, 2000.
  5. Kim-Pusateri S, Brewer JD, Davis EL, Wee AG. Reliability and accuracy of four dental shade-matching devices. J Prosthet Dent 2009;101:193-9. https://doi.org/10.1016/S0022-3913(09)60028-7
  6. Paul S, Peter A, Pietrobon N, Hammerle CH. Visual and spectrophotometric shade analysis of human teeth. J Dent Res 2002;81:578-82. https://doi.org/10.1177/154405910208100815
  7. van der Burgt TP, ten Bosch JJ, Borsboom PC, Kortsmit WJ. A comparison of new and conventional methods for quantification of tooth color. J Prosthet Dent 1990;63:155-62. https://doi.org/10.1016/0022-3913(90)90099-X
  8. Preston JD. Current status of shade selection and color matching. Quintessence Int 1985;16:47-58.
  9. Miller L. Organizing color in dentistry. J Am Dent Assoc 1987:26E-40E.
  10. Lee YK, Yu B, Lim JI, Lim HN. Perceived color shift of a shade guide according to the change of illuminant. J Prosthet Dent 2011;105:91-9. https://doi.org/10.1016/S0022-3913(11)60006-1
  11. CIE 15:2004, CIE Technical Report: Colorimetry, 3rd edition, International Commission on Illumination (Commission Internationale de l'Eclairage), Vienna, Austria, ISBN: 3-901-906-33-9, www.cie-usnc.org.
  12. Sproull RC. Color matching in dentistry. II. Practical applications of the organization of color. J Prosthet Dent 1973;29:556-66. https://doi.org/10.1016/0022-3913(73)90036-X
  13. Hammad IA. Intrarater repeatability of shade selections with two shade guides. J Prosthet Dent 2003;89:50-3. https://doi.org/10.1067/mpr.2003.60
  14. Seghi RR, Johnston WM, O'Brien WJ. Spectrophotometric analysis of color differences between porcelain systems. J Prosthet Dent 1986;56:35-40. https://doi.org/10.1016/0022-3913(86)90279-9
  15. DozicA, Kleverlaan CJ, El-Zohairy A, Feilzer AJ, Khashayar G. Performance of five commercially available tooth colormeasuring devices. J Prosthodont 2007;16:93-100. https://doi.org/10.1111/j.1532-849X.2007.00163.x
  16. Paravina RD, Powers JM, Fay RM. Color comparison of two shade guides. Int J Prosthodont 2002;15:73-8.
  17. Ahn JS, Lee YK. Color distribution of a shade guide in the value, chroma, and hue scale. J Prosthet Dent 2008;100:18-28. https://doi.org/10.1016/S0022-3913(08)60129-8
  18. Hassel AJ, Koke U, Schmitter M, Beck J, Rammelsberg P. Clinical effect of different shade guide systems on the tooth shades of ceramic-veneered restorations. Int J Prosthodont 2005;18:422-6.
  19. Schwabacher WB, Goodkind RJ. Three-dimensional color coordinates of natural teeth compared with three shade guides. J Prosthet Dent 1990;64:425-31. https://doi.org/10.1016/0022-3913(90)90038-E
  20. O'Brien WJ, Groh CL, Boenke KM. A new, small-color-difference equation for dental shades. J Dent Res 1990;69:1762-4. https://doi.org/10.1177/00220345900690111001
  21. Barrett AA, Grimaudo NJ, Anusavice KJ, Yang MC. Influence of tab and disk design on shade matching of dental porcelain. J Prosthet Dent 2002;88:591-7. https://doi.org/10.1067/mpr.2002.129892
  22. Donahue JL, Goodkind RJ, Schwabacher WB, Aeppli DP. Shade color discrimination by men and women. J Prosthet Dent 1991;65:699-703. https://doi.org/10.1016/0022-3913(91)90209-F
  23. Capa N, Malkondu O, Kazazoglu E, Calikkocaoglu S. Evaluating factors that affect the shade-matching ability of dentists, dental staff members and laypeople. J Am Dent Assoc 2010;141:71-6. https://doi.org/10.14219/jada.archive.2010.0023
  24. Gokce HS, Piskin B, Ceyhan D, Gokce SM, Arisan V. Shade matching performance of normal and color vision-deficient dental professionals with standard daylight and tungsten illuminants. J Prosthet Dent 2010;103:139-47. https://doi.org/10.1016/S0022-3913(10)60020-0