Influence of the shade guide design on color matching

Geol Park; Dong-Jun Kim; Shee-Eun Lee; Yun-Chan Hwang; Won-Mann Oh; In-Nam Hwang

doi:10.5395/JKACD.2005.30.3.170

Journal List > J Korean Acad Conserv Dent > v.30(3) > 1056155

Go to TopGo to Top Go to BottomGo to Bottom

TOOLS

Park, Kim, Lee, Hwang, Oh, and Hwang: Influence of the shade guide design on color matching

Original Article

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2005; 30(3): 170-177.

Published online: 31 May 2005

DOI: https://doi.org/10.5395/JKACD.2005.30.3.170

Influence of the shade guide design on color matching

Geol Park¹, Dong-Jun Kim¹, Shee-Eun Lee², Yun-Chan Hwang¹, Won-Mann Oh¹, In-Nam Hwang¹

¹Department of Conservative Dentistry, College of Dentistry, DSRI, Chonnam National University, Korea.

²Department of Pharmacology and Dental Therapeutics, College of Dentistry, DSRI, Chonnam National University, Korea.

Corresponding author: In-Nam Hwang. Department of Conservative Dentistry, College of Dentistry, Chonnam National University, 8 Hak-dong, Dong-gu, Gwangju, Korea, 501-757. Tel: 82-62-220-4443, Fax: 82-62-225-8387, hinso@jnu.ac.kr

Received 6 September 2004 Revised 27 October 2004 Accepted 9 November 2004

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study was conducted in order to assess whether the form of the shade guide affects in deciding the color of the teeth using the shade guide.

Eight shade light cured composite resins (Esthet-X, Dentsply, Milford, USA) were used in this study. Shade guides including the model of maxillary central incisors, teeth-form shade guide, doughnut form shade guide, and shade guide with perforated gray shield were prepared with eight shade composite resins and provided the codes randomly.

After arranging the models of teeth, 19 dentists working at the clinic of the Dentistry of Chonnam University Hospital and 65 students of college of dentistry, Chonnnam University selected the shade guides corresponding to the color of each tooth on the gray board under the D65 standard illuminant.

B1 shade showed highest accuracy of about 95% among all shade guides of 3 forms applied to the test and regardless of observer, tooth form shade guide showed the highest accuracy (p < 0.05), and the doughnut form showed the lowest accuracy (p < 0.05).

At the time of deciding on the color of the teeth using the shade guides as a result of above, the forms of the shade guides can affect the accuracy, and it suggests that the development of the diversified forms of shade guides, which may obtain more accurate results, is required.

Keywords: Shape of Shade guide, Color matching

Figures and Tables

Figure 1

Schematic drawing of shade guides.

Figure 2

Tooth model and prepared shade guides.

Figure 3

Percent correct matches by observer and by shape of shade guide.

Table 1

Color difference (ΔE^*) among different shade of used composites

Table 2

Percent correct matches by observer and by shape of shade guide

Table 3

Statistical analysis by two-way ANOVA

Table 4

Tooth shape shade guide matching selections of all observers

Correct selection percentages are bold.

Table 5

Doughnut shape shade guide matching selections of all observers

Correct selection percentages are bold.

Table 6

Perforated shield shade guide matching selections of all observers

Correct selection percentages are bold.

References

1. Sproull RC. Color matching in dentistry. Part II. Practical application of the organization of color. J Prosthet Dent. 1973. 29:556–566.

2. Miller L. Organizing color in dentistry. J Am Dent Assoc. 1987. (Spec No):26E–40E.

3. Lund TW, Schwabacher WB, Goodkind RJ. Spectrophotometric study of the relationship between body color porcelain and applied metallic oxide pigment. J Prosthet Dent. 1985. 53:790–796.

4. O'Neal SJ, Powell WD. Color discrimination and shade matching ability of third year dental student. J Prosthet Dent. 1984. 63:174.

5. van der Burgt TP, ten Bosch JJ, Borsboom PC, Plasschaert AJ. A new method for matching tooth colors with color standards. J Dent Res. 1985. 64:837–841.

6. Kim HS, Um CM, Kahng MW. A Study on Color Differences Between Composite Resins and Shade Guides. J Korean Acad Conserv Dent. 1996. 21:107–120.

7. Cho KY, Hwang IN, Choi HR, Oh WM. Comparative Evaluation of Light-cured Composite Resins Based on Vita Shade by Spectrocolorimeter. J Korean Acad Conserv Dent. 1998. 23:424–432.

8. Wozniak WT. Proposed guidelines for the acceptance program for dental shade guides. 1987. Chicago: American Dental Association.

9. Preston JD. Current status of shade selection and color matching. Quintessence Int. 1985. 16:47–58.

10. Hwang IN, Oh WM. Colorimetric Analysis of Extracted Human Teeth and Five Shade Guides. J Korean Acad Conserv Dent. 1997. 22:769–781.

11. Cho KM, Shin DH. Color Analysis of The Natural Teeth with a Modified Intraoral Spectrophotometer. J Korean Acad Conserv Dent. 1998. 23:223–235.

12. Hwang IN, Lee KW. Translucency of Light Cured Composite Resins Depends on Thickness & Its Influence on Color of Restorations. J Korean Acad Conserv Dent. 1999. 24:604–613.

13. Goodkind RJ, Schwabacher WB. Use of a fiber-optic colorimeter for in vivo color measurements of 2830 anterior teeth. J Prosthet Dent. 1987. 58:535–542.

14. Johnston WM, Kao EC. Assessment of appearance match by visual observation and clinical colorimeter. J Dent Res. 1989. 68:819–822.

15. Barrett AA, Grimaudo NJ, Anuscvice KJ, Yang MCK. Influence of tab and disk design on shade matching of dental porcelain. J Prosthet Dent. 2002. 88:591–597.

16. Lee MY, Shin DH. New Evaluation Technique in Teeth Color Using Digital Camera. J Korean Acad Conserv Dent. 1997. 22:325–333.

17. Gross MD, Moser JB. A colorimetric study of coffee and tee staining of four composite resins. J Oral Rehabil. 1977. 4:311–322.

18. Seghi RR, Hewlett ER, Kim J. Visual and instrumental colorimetric assessments of small color differences on translucent dental porcelain. J Dent Res. 1989. 68:1760–1764.

19. Moon EB. Color Systems. 2002. Seoul: Kukjebook;215–271.

20. Park EJ. Basic on Color Moulding. 1996. 2nd ed. Seoul: Mijinsa;56–194.

21. Methods of Visual Comparison for Object Color. The Korean Industrial Standard. KS A 0061.

22. Anusavice KJ. Phillips' science of dental materials. 1996. 10th ed. Philadelphis: Saunders;42.

23. Macentee M, Lakowski R. Instrumental color measurement of vital and extracted teeth. J Oral Rehabil. 1981. 8:203–208.

24. Farnsworth D. The Farnsworth-Munsell 100-hue and dichotomous tests for color vision. J Opt Soc Am. 1943. 33:568–578.

25. Shillingburg H, Hobo S, Whitsett LD, Jacobi R, Brackett SE. Fundamentals of fixed prosthodontics. 1997. 3rd ed. Chicago: Quintessence Publishing Co;437.

TOOLS

Similar articles