Bezold–Brucke effect exists in related and unrelated colors and resembles the Abney effect

Pridmore, Ralph W.

doi:10.1002/col.20011

Cited by 18 publications

(10 citation statements)

References 11 publications

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“…In dentistry, the blending effect refers to the interaction of dental materials and hard dental tissues and is manifested by a smaller color difference if they are observed together than if viewed individually . In other words, two colors, seen side by side, will blend under the appropriate circumstances: the perceived color of a region shifts toward the color of the surround . The blending effect works for the clinician because it lowers, minimizes, or neutralizes color mismatches and/or the absence of the adequate shade in the restorative material.…”

Section: Discussionmentioning

confidence: 99%

“…12 In other words, two colors, seen side by side, will blend under the appropriate circumstances: the perceived color of a region shifts toward the color of the surround. 13 The blending effect works for the clinician because it lowers, minimizes, or neutralizes color mismatches and/or the absence of the adequate shade in the restorative material.…”

Section: Discussionmentioning

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: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

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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“…The Bezold-Brücke effect was included in the version of the Hunt94 Model for unrelated colours (Hunt 94u), 4 but was not included in the version for related colours because it was believed 5 that this effect did not occur with related colours. However, it now seems that this effect does occur for related colours, as found by Pridmore 6 and by Deng, Chen, and Rea.…”

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confidence: 68%

Comments on the article by Deng, Chen, and Rea on the HUNT94 color appearance model

Hunt

2005

Color Research & Application

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“…6,7 The axioms of Krantz's analysis (see also Appendix) define what are known as Grassmann structures, and they specify affine vector systems where Grassmann's laws of colour mixing hold true. Apparent failures of Grassmann additivity in the visual response are however well documented by Alman, Pridmore, Thornton, Kuehni [8][9][10][11] and others. The axioms of affine geometry quoted by Krantz are therefore used to specify a set of reference Grassmann structures, and such failures of additivity are then quantified and calibrated as numeric deviations from Grassmann's Laws by projecting the relevant dataset values onto this reference space definition.…”

Section: Altering the Quantifying Scalar Basis Of The Colorimetric Anmentioning

confidence: 85%

Notes toward a verifiable vector algebraic basis for colorimetric modeling

Oulton

2009

Color Research & Application

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The presented notes aim toward improved models of the scalar visual response to flat-field stimuli, and are prompted by unease over the complexity of existing colour difference models. Some of the basic assumptions of colorimetry are examined in detail, and analytical methods whereby these assumptions can be investigated experimentally are presented. A key finding is that the standard CIE colorimetric model is verifiably correct as a predictor of point colour identity and metameric visual equivalence. It is however demonstrated to be a misleading basis for modeling colour difference, and an alternative scalar reference basis and experimental analysis method are presented

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Bezold–Brucke effect exists in related and unrelated colors and resembles the Abney effect

Cited by 18 publications

References 11 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

Comments on the article by Deng, Chen, and Rea on the HUNT94 color appearance model

Notes toward a verifiable vector algebraic basis for colorimetric modeling

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