Color Assimilation of Resin Composites with Adjacent Color According to the Distance

Lee, Yong-Keun; Yu, Bin; Zhao, Guangfeng; Lim, Jong In

doi:10.1111/jerd.12126

Cited by 11 publications

(22 citation statements)

References 13 publications

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“…Three categories of color‐related properties of dental materials have been described: (a) color compatibility—among dental materials, and between shade guides and teeth; (b) color stability—before (eg, firing), during (eg, polymerization) and after (eg, aging and staining) placement; and (c) color interactions—layering and color shifting that clinically relates to a dental material taking on the color of the surrounding hard dental tissues after placement. The term “chameleon effect” is dental jargon, color science terminology uses blending effect, color assimilation, color induction, or the Von Bezold effect …”

Section: Introductionmentioning

confidence: 99%

“…The term "chameleon effect" is dental jargon, color science terminology uses blending effect, color assimilation, color induction, or the Von Bezold effect. [1][2][3] Color shifting of dental materials consists of two major aspects: the blending effect (primarily perceptual, subjective, and not measurable by any device) and a quantifiable, physical translucency related component. 4 Dental materials that exhibit color shifting toward the color of the surrounding hard dental tissues may have a clinical advantage as this can improve the esthetic appearance of the restoration, simplify shade matching, reduce the number of shade guide tabs, and compensate for color mismatches to some extent.…”

Section: Introductionmentioning

confidence: 99%

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Instrumental and visual evaluation of the color adjustment potential of resin composites

Sanchez

Powers²,

Paravina

2019

J Esthet Restor Dent

124

103

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Objective To evaluate the instrumental and visual color adjustment potential (CAP‐I, CAP‐V), of resin composites. Methods Resin composites tested were Omnichroma, Filtek Supreme Ultra, TPH Spectra, Herculite Ultra, and Tetric EvoCeram. Two types of specimens, “dual” and “single” were evaluated. For dual specimens, class I preparations (4 mm‐diameter, 2 mm‐depth), were created in denture teeth and restored with test resin composites. For single specimens, replications of denture teeth were created using the test resin composites (n = 5) and compared with unrestored denture teeth. Reflectance values were obtained using a spectroradiometer. CAP‐I and CAP‐V were calculated. Fisher PLSD intervals for comparison of means were calculated at the 0.05 level of significance. Results CAP‐I ranged between 0.02 and 0.67. The Fisher PLSD interval for comparisons between single/dual color differences was 0.09 (P < .0001, power 1.0) and for comparisons between materials and shades 0.18 and 0.33, respectively (P < .0001, power 1.0). CAP‐V ranged between 0.16 and 0.60. The Fisher PLSD interval for comparisons between single/dual visual color differences was 0.05 (P < .0001, power 1.0) and 0.08 and 0.14 for comparisons between materials and shades, respectively (P < .0001, except Herculite Ultra‐Tetric EvoCeram and certain shade pairs). Conclusions Instrumental color differences and visual rating of single specimens were the greatest for Omnichroma, indicating the largest mismatch, while the instrumental and visual color differences of dual specimens were the smallest. Omnichroma had the most pronounced CAP‐I followed by Tetric EvoCeram>TPH Spectra = Filtek Supreme Ultra >Herculite Ultra. Similarly, Omnichroma exhibited the most pronounced CAP‐V followed by Tetric EvoCeram>TPH Spectra = Herculite Ultra = Filtek Supreme Ultra. Clinical significance Resin composites with pronounced CAP blends with surrounding enamel and dentin, resulting in reduced color differences and therefore improving the esthetic appearance of the restoration, simplifying the shade matching and compensating for any color mismatch.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Instrumental and visual evaluation of the color adjustment potential of resin composites

Sanchez

Powers²,

Paravina

2019

J Esthet Restor Dent

124

103

View full text Add to dashboard Cite

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“…Translucency in esthetic restorative materials induces the depth of color in restorations, and also influences the color harmonization with surrounding or adjacent teeth/restorations. 1 2 3 Optical performance of restorations may be compromised by poor shade blending of opaque restorative materials at the tooth interface. 4 For the measurements of optical properties, the Commission Internationale de I'Eclairage (CIE) color coordinates and the CIE standard illuminants are generally used.…”

Section: Introductionmentioning

confidence: 99%

Criteria for clinical translucency evaluation of direct esthetic restorative materials

Lee¹

2016

Restor Dent Endod

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The purpose of this review was to suggest practical criteria for the clinical translucency evaluation of direct esthetic restorative materials, and to review the translucency with these criteria. For the evaluation of reported translucency values, measuring instrument and method, specimen thickness, background color, and illumination should be scrutinized. Translucency parameter (TP) of 15 to 19 could be regarded as the translucency of 1 mm thick human enamel. Visual perceptibility threshold for translucency difference in contrast ratio (ΔCR) of 0.07 could be transformed into ΔTP value of 2. Translucency differences between direct and indirect resin composites were perceivable (ΔTP > 2). Universal and corresponding flowable resin composites did not show perceivable translucency differences in most products. Translucency differed significantly by the product within each shade group, and by the shade group within each product. Translucency of human enamel and perceptibility threshold for translucency difference may be used as criteria for the clinical evaluation of translucency of esthetic restorative materials.

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“…Translucent property of esthetic materials enhances the color harmonization with surrounding or adjacent teeth/restorations and the color blending at restoration-tooth interface 1234. The Commission Internationale de l'Eclairage (CIE) color coordinates are generally used in dental color study 5.…”

Section: Introductionmentioning

confidence: 99%

Translucency changes of direct esthetic restorative materials after curing, aging and treatment

Lee¹

2016

Restor Dent Endod

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The purpose of this article was to review the changes in translucency of direct esthetic restorative materials after curing, aging and treatment. As a criterion for the evaluation of clinical translucency changes, visual perceptibility threshold in translucency parameter difference (ΔTP) of 2 was used. Translucency changes after curing were perceivable depending on experimental methods and products (largest ΔTP in resin composites = 15.9). Translucency changes after aging were reported as either relatively stable or showed perceivable changes by aging protocols (largest ΔTP in resin composites = -3.8). Translucency changes after curing, aging and treatment were perceivable in several products and experimental methods. Therefore, shade matching of direct esthetic materials should be performed considering these instabilities of translucency in direct esthetic materials.

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Color Assimilation of Resin Composites with Adjacent Color According to the Distance

Abstract: The CSP investigated in the present study might be used to compare the tendency of color assimilation of esthetic restorative materials, and proper CSP ranges for optimal color assimilation or color blocking should be further determined.

Cited by 11 publications

References 13 publications

Instrumental and visual evaluation of the color adjustment potential of resin composites

Instrumental and visual evaluation of the color adjustment potential of resin composites

Criteria for clinical translucency evaluation of direct esthetic restorative materials

Translucency changes of direct esthetic restorative materials after curing, aging and treatment

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