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Shade Comparative Analysis of Natural tooth Measured by Visual and Two Colorimeters(ShadeEye®,Shadepilot®)

2종 측색기와 시각을 이용한 자연치아의 색조 비교 분석

  • Received : 2012.10.04
  • Accepted : 2013.03.25
  • Published : 2013.03.30

Abstract

The objectives were to evaluate the accuracy of shade selection by human visual system(VS) and 2 different colorimeters ($ShadeEye^{(R)}$(SE) and Shadepilot (SP)). Maxillary anterior teeth of 30 volunteers which had no caries or restorations were included in the study. Firstly, the accordance in shade selection by 3 dentists and 2 colorimeters was investigated. Secondly, the color of the teeth were measured by 1 observer's naked eye and 2 colorimeters under different illumination conditions (Sunny versus cloudy day). Additionally testing of inter-observer variability selected colors by 2 novice and 2 experienced dentists were compared. For comparing visual and 2 different colorimeters, SP(60%) showed significantly highest rate of accordance than the visual (23.3%) or SE (16.7%) and lowest mean ${\Delta}E$ ($2.62{\pm}0.74$ versus $3.83{\pm}1.38$;SE or $4.04{\pm}1.61$;VS)(p<0.001). If accuracy of shade selection were measured using VS, the mean ${\Delta}E$ value of cloudy day was higher than that of sunny day ($4.35{\pm}1.70$ versus $3.53{\pm}1.31$; p<0.001). There were no significant difference of the mean ${\Delta}E$ value between sunny and cloudy day in both SE and SP. Inter- observer repeatability was higher in 2 experienced group (73.3%) than novice group (36.7%). The mean ${\Delta}E$ of experienced group was lower than that of novice group ($3.60{\pm}1.47$ versus $4.70{\pm}1.67$; p<0.001). Colorimeters (SE or SP) is more accurate and more reproducible compared with human shade assessment. Using visual system may be limited by cloudy and inexperience of tester, then more experience and using colorimeters may be helpful of raising the accurate repeatability of shade selection.

Keywords

Shade selection;Colorimeter;$ShadeEye-Ncc^{(R)}$;$Shadepilot^{TM}$

References

  1. 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: 155-162 https://doi.org/10.1016/0022-3913(90)90099-X
  2. Hammad IA. Intrarater repeatability of shade selections with two shade guides. J Prosthet Dent, 2003:89:50-53 https://doi.org/10.1067/mpr.2003.60
  3. Bergen SF, McCasland J. Dental operatory lighting and tooth colour discrimination. J Am Dent Assoc. 1977: 94:130-134 https://doi.org/10.14219/jada.archive.1977.0264
  4. Davison SP, Myslinski NR. Shade selection by color vision-defective dental personnel. J Prosthet Dent, 1990:63:97-101 https://doi.org/10.1016/0022-3913(90)90276-I
  5. O'Keefe KL, Strickler ER, Kerrin Hk. Color and shade matching; The Weak link in esthetic dentistry. Compend Contin Educ dent, 1990:11:116-20
  6. Sim CPC, Yap AUJ, Teo J. Color perception among different dental personal. oper dent, 2001:26:435-439
  7. Ryu SY, Lim JH, Cho IH. A study on the color stability of porcelain for porcelain fused to metal crown. J Korean Academy of Prosthodontics, 2000: 38:73-84
  8. Preston JD. Current status of shade selection and color matching. Quintessence Int, 1985:16:47-58
  9. Paul s, Peter A, Pietrobon N, Hammerle Ch. Visual and spectrophotometric shade analysis of human teeth. J Dent Res 2002:81: 578-582 https://doi.org/10.1177/154405910208100815
  10. Josephine FE, John Chai, Wayne Tw. Color stability of low-fusing porcelains for titanium. Int J Prosthodont, 1995:8:479-485
  11. Lee ST, Lee JH, Shin SY. Evaluation od shade guide using digital shade analysis system. J Korean Academy of Prosthodontics, 2009:47:1-11 https://doi.org/10.4047/jkap.2009.47.1.1
  12. Hasegawa A, Ikeda I, Kawaguchi S. Color and translucency of in vivo natural central incisors. J Prosthet Dent, 2000:83:418-423 https://doi.org/10.1016/S0022-3913(00)70036-9
  13. Lee TI, Ahn JS, Kim YS Shin SW. Comparison on accuracy of porcelain color reproducibility using two colorimeters. J Korean Academy of Prosthodontics, 2009:47:348-355 https://doi.org/10.4047/jkap.2009.47.3.348
  14. Seghi RR, Johnson WM, O'Brien WJ . Spectphotometetric 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. Kuehni RG, Marcus RT. An experiment in visual scailing of small color difference. Color Res appl, 1979:4: 83-91
  16. Johnston WM, Kao EC Assessment of appearance match by visual observation and clinical colorimetry. J Dent res, 1989: 68:819-822 https://doi.org/10.1177/00220345890680051301
  17. O'Brien WJ, Groh CL, Boenke KM. A new, small color difference equation for dental shades. J Dent Res 1990:69:1762-1764 https://doi.org/10.1177/00220345900690111001
  18. Knispel G. Factors affecting the process of color and shade matching restorative materials to natural teeth. Quintessence Int, 1991:22:525-531
  19. Miller LL. Esthetic dentistry development program. J Esthe Dent, 1992:6:47-60
  20. H. Dagg, B. O'connell, N. claffey. The influence of some different factors on the accuracy od shade selection. J Oral Reh, 2004: 31: 900-904 https://doi.org/10.1111/j.1365-2842.2004.01310.x
  21. Culpepper WD. A comparative study of Shade Matching Procedure. J Prosthet Dent. 1970:24:166- 173 https://doi.org/10.1016/0022-3913(70)90140-X