Color difference of the dental composites measured by different color measuring instruments

Su-Jung Park; Eun-Young Noh; Hyun-Gu Cho; Yun-Chan Hwang; Won-Mann Oh; In-Nam Hwang

doi:10.5395/JKACD.2009.34.3.199

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Original Article Color difference of the dental composites measured by different color measuring instruments: Su-Jung Park, Eun-Young Noh, Hyun-Gu Cho, Yun-Chan Hwang, Won-Mann Oh, In-Nam Hwang; Journal of Korean Academy of Conservative Dentistry 2009;34(3):199-207.
DOI: https://doi.org/10.5395/JKACD.2009.34.3.199
Published online: May 31, 2009

Department of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University, Korea.

Corresponding author: In-Nam Hwang. Department of Conservative Dentistry, Chonnam National University School of Dentistry, Yongbong-ro 77, Buk-gu, Gwangju, 500-757, Korea. Tel. 82-62-530-5819, Fax. 82-62-530-5629, hinso@jnu.ac.kr

• Received: March 3, 2009 • Revised: March 26, 2009 • Accepted: April 23, 2009

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Abstract
REFERENCES

Abstract

The objective of this study was to evaluate the effect of color measuring instrument by measuring the color of dental composite resins.

Nine shade light cured composite resin disks were prepared (diameter : 15 mm, thickness : 4 mm). CIE L^*a^*b^* color scale of each disk was measured with 3 different types of spectrophotometer [MiniScan XE plus (Model 4000S, Hunter Lab, USA), CM-3500d (Minolta, Japan) and Specbos 2100 Miniature VIS Reflection spectrometer (Serial No: 319416, JETI Technishe VIS Instrumentic GmbH, Germany)]. Miniscan XE Plus and CM-3500d using identical measuring geometry with different size of viewing aperture. But Specbos 2100 using different measuring geometry.

Within the limitation of this study, there were color difference (ΔE^*) from 2.4 to 7.8 between Miniscan XE Plus and CM-3500d, but L^*, a^*, b^* values showed the high correlation. However, there were great color difference (ΔE^*) in the extent of about 20 between instruments with the different measuring geometry.

Therefore, color scale measured by color measuring instrument should be used as a relative value rather than an absolute value in the field of dentistry.
Keywords: tooth color; resin color; colorimeter; spectrophotometer; color difference

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Figure 1

Diagram of the Duplex-Fiber bundle.

Figure 2

L^* value change of the Z-250 according to the measuring instrument and condition.Miniscan: MiniScan XE Plus

CD: Minolta CD-3500d

spec-O/D: Specbos 2100 with original measuring tip under dark.

spec-O/L: Specbos 2100 with original measuring tip under light.

spec-H/L: Specbos 2100 with handmade measuring tip under light.

Figure 3

a^* value change of the Z-250 according to the measuring instrument and condition.

Figure 4

b^* value change of the Z-250 according to the measuring instrument and condition.

Table 1

Products, shade, and manufacturers of tested composite resins

Table 2

CIE L^*a^*b^* values of Filtek Z-250 measured by MiniScan XE Plus and Minolta CM 3500d

Standard deviations are in parentheses.

Table 3

CIE L^*a^*b^* values of Filtek Z-250 measured by Specbos 2100 according to the used tip and measured condition

Standard deviations are in parentheses

Table 4

Color difference(ΔE^*) among different color measuring instruments in the Z-250

H : MiniScan XE Plus

M : Minolta CD-3500d

Dark : Specbos 2100 with original measuring tip under dark.

Light : Specbos 2100 with original measuring tip under light.

HMT : Specbos 2100 with handmade measuring tip under light.

Tables & Figures

REFERENCES

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Color difference of the dental composites measured by different color measuring instruments

J Korean Acad Conserv Dent. 2009;34(3):199-207. Published online May 31, 2009

DOI: https://doi.org/10.5395/JKACD.2009.34.3.199

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Color difference of the dental composites measured by different color measuring instruments

Figure 1 Diagram of the Duplex-Fiber bundle.

Figure 2 L* value change of the Z-250 according to the measuring instrument and condition.Miniscan: MiniScan XE Plus CD: Minolta CD-3500d spec-O/D: Specbos 2100 with original measuring tip under dark. spec-O/L: Specbos 2100 with original measuring tip under light. spec-H/L: Specbos 2100 with handmade measuring tip under light.

Figure 3 a* value change of the Z-250 according to the measuring instrument and condition.

Figure 4 b* value change of the Z-250 according to the measuring instrument and condition.

Figure 1

Figure 2

Figure 3

Figure 4

Color difference of the dental composites measured by different color measuring instruments

Table 1

Products, shade, and manufacturers of tested composite resins

Table 2

CIE L^*a^*b^* values of Filtek Z-250 measured by MiniScan XE Plus and Minolta CM 3500d

Standard deviations are in parentheses.

Table 3

CIE L^*a^*b^* values of Filtek Z-250 measured by Specbos 2100 according to the used tip and measured condition

Standard deviations are in parentheses

Table 4

Color difference(ΔE^*) among different color measuring instruments in the Z-250

H : MiniScan XE Plus

M : Minolta CD-3500d

Dark : Specbos 2100 with original measuring tip under dark.

Light : Specbos 2100 with original measuring tip under light.

HMT : Specbos 2100 with handmade measuring tip under light.

Table 1 Products, shade, and manufacturers of tested composite resins

Table 2 CIE L*a*b* values of Filtek Z-250 measured by MiniScan XE Plus and Minolta CM 3500d

Standard deviations are in parentheses.

Table 3 CIE L*a*b* values of Filtek Z-250 measured by Specbos 2100 according to the used tip and measured condition

Standard deviations are in parentheses

Table 4 Color difference(ΔE*) among different color measuring instruments in the Z-250

H : MiniScan XE Plus

M : Minolta CD-3500d

Dark : Specbos 2100 with original measuring tip under dark.

Light : Specbos 2100 with original measuring tip under light.

HMT : Specbos 2100 with handmade measuring tip under light.