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

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Original Article 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; Journal of Korean Academy of Conservative Dentistry 2005;30(3):170-177.
DOI: https://doi.org/10.5395/JKACD.2005.30.3.170
Published online: May 31, 2005

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: September 6, 2004 • Revised: October 27, 2004 • Accepted: November 9, 2004

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Abstract
REFERENCES

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

REFERENCES

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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.

Tables & Figures

REFERENCES

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Influence of the shade guide design on color matching

J Korean Acad Conserv Dent. 2005;30(3):170-177. Published online May 31, 2005

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

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Figure

Influence of the shade guide design on color matching

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.

Figure 1

Figure 2

Figure 3

Influence of the shade guide design on color matching

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.

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.