Influence of background/surrounding area on accuracy of visual color matching

Dudea, Diana; Gasparik, Cristina; Botos, Alexandra; Alb, Florin; Irimie, Ada; Paravina, Rade D.

doi:10.1007/s00784-015-1620-3

Cited by 46 publications

(58 citation statements)

References 36 publications

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“…Many authors recommend color corrected light . Perception of shade are reported to change with different lighting conditions . In order to mimic the clinical scenario, the current study used recommended day light between 10 am to 2 pm on a sunny day.…”

Section: Discussioncontrasting

confidence: 92%

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The effect of gender and clinical experience on shade perception

Aswini

Ramanarayanan

Rejithan

et al. 2019

J Esthet Restor Dent

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Objective Shade matching is a critical procedure in prosthetic dentistry. The correct identification of the shade by the doctor as well as the perception of the shade by the dental technician becomes critical due to the high patient expectations. The current study aims to evaluate the effect of gender and clinical experience on shade perception by dental professionals. Materials and Methods A total of 100 dental professionals with normal color vision who were categorized as dental students, dental doctors, and dental specialists were included in the study. Masked A2 and B2 shades tabs were made to match with a complete set of shade guide. The obtained data were entered, coded, and analyzed using SPSS version 17 for Windows. Results Total number of participants who identified both shade tabs correctly was 44%. There were no statistically significant differences among the gender or the clinical experience with regard to correct identification of shade tabs. Conclusion Within its limitations of fewer number (two) of shade tabs for comparison, the study concludes that multiple opinions may be taken clinically irrespective of the gender or clinical experience as gender and experience do not have a significant role to play for shade matching in prosthetic and restorative dentistry.

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Section: Discussioncontrasting

confidence: 92%

“…19,22 Perception of shade are reported to change with different lighting conditions. 30 In order to mimic the clinical scenario, the current study used recommended day light between 10 AM to 2 PM on a sunny day. A neutral background was used to refrain the observers from any possible metamerism and distractions.…”

Section: Discussionmentioning

confidence: 99%

The effect of gender and clinical experience on shade perception

Aswini

Ramanarayanan

Rejithan

et al. 2019

J Esthet Restor Dent

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“…The communication of color with the dental laboratory is essential for high es-in dental offices to eliminate the influences [21][22][23][24][25] . However, only in one publication was focused on the importance and influence of background / surrounding color [20] . Dudea et al performed color matching of 10 color-competent observers under reproducible conditions (optical geometry, viewing distance) under two different illumination (6500K and 5000K) and 5 different colored surroundings (grey, white, and black, red and light blue) [20] .…”

Section: Introductionmentioning

confidence: 99%

Influence of Surrounding Conditions on Visual Determination of Tooth Shade

Klinke-Wilberg¹,

Biffar²

2018

JDOC

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Statement of problem: Environmental conditions play a major role for accurate determination of tooth color. However, often underestimated is the impact like intensity of illumination, individual adaptation time as well as the influence of environmental conditions on color determination? Purpose: The aim of this research is to analyze the influence of background color on the visual determination of tooth color. Material and methods: Dental students (N=37) at the Universities in Dresden, Leipzig, Berlin, Olomuc and Greifswald participated in this research. A standardized lecture, followed by the web-based Toothguide-Trainer tool (www.toothguide.de) prepares the students for templates matching with the computer aided "Tooth guide-Training-Box" (TTB, VITA Zahnfabrik).After color matching in neutral grey surrounding (reference), the participants repeated the matching on modified TTBs (red, yellow and blue). Color distance to the selected templates (∆E) was calculated confounded by gender and age. The mean and standard deviation (SD), median and the 95 % confidence interval (95% CI) were calculated using Mann-WhitneyU test (α=.05). Results: Compared with the reference (neutral grey) a color distance (mean ΔE) of 2.45 and standard deviation (SD) ± 2.6, ΔE for red background was 3.35 (± 2.8), blue had a ∆E value of 2.98 (± 2.6). U test showed highest significant differences (P < 001) to the reference. Yellow background showed a mean of ΔE 2.94 (± 2.7) with P <.01. 95% CI for reference was 2.16-2.49, red 3.07-3.44, blue 2.71-3.05 and yellow 2.67-3.02.Odds ratio of misassessment (∆E > 3) for red environment was 2.14 (P < 001), for blue background with 1.73 (P < 001) and yellow with 1.53 (P =.001) significant higher compared with reference (neutral grey).For all background colors ("yellow", "blue", "red"), men needed a significantly longer evaluation time (P < 05, respectively) in color differentiation than for the grey background (reference). Conclusion: The environmental conditions play a major role and influence the visual determination of tooth color significantly. Standardized conditions are required to get exact results in the tooth color differentiation. Clinical implications: Color determination requires "dazzle-free" standard environment conditions (neutral grey environment, day light illumination) to improve the visual color differentiations procedures. Eliminable factors, like colorful outerwear, make-up, colorful walls and ceilings as well as colorful dental instruments have to be avoided.

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“…Optical congruence between the material and tooth tissues is accomplished by color layering. Though the final color of the restoration is a blend of optical properties of each individual layer, color perception is influenced by adjacent tooth structure, dental restorations, background, and observer …”

Section: Introductionmentioning

confidence: 99%

“…Though the final color of the restoration is a blend of optical properties of each individual layer, [5][6][7] color perception is influenced by adjacent tooth structure, 8 dental restorations, 9 background, and observer. 10,11 Large cavities in posterior teeth are commonly restored with multiple layers of universal composites, conventionally layered in 2 mm increments, or bulk-fill composites, applied in 4 to 5 mm thick layers.…”

Section: Introductionmentioning

confidence: 99%

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

Miletić

Marjanovic

Veljović

et al. 2019

J Esthet Restor Dent

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Objective To determine color changes in bulk‐fill composite and universal composite restorations with dissimilar dentin replacement materials in extracted teeth after staining in red wine. Materials and Methods Cylindrical, 4 mm deep, class I cavities were prepared in 140 human molars. Bottom 2 mm was restored with Biodentine (Septodont), everX posterior (GC) or experimental HAP inserts. Each dentin replacement material was covered with a 2‐mm layer of a universal composite Filtek Z250 or Z550 (3M ESPE) or Gradia Posterior (GC). Groups combining top composite layer and the underlying dentin replacement were designated as “composite_dentin replacement.” Filtek Bulk Fill (3M ESPE) and Tetric EvoCeram Bulk Fill (Ivoclar Vivadent) were placed as a single 4‐mm layer. Color measurements were performed using Vita Easyshade 4.0 (Vita Zahnfabrik) initially and after 48‐hours storage in red wine at 37°C. Results Color differences (ΔEoo) ranged between 2.1 ± 0.7 (Z250_HAP) and 7.8 ± 1.1 (Z550_everX). EverX resulted in higher ΔEoo of the overlying composite than HAP (P < .001) and Biodentine (P = .006). Generally, ΔEoo was affected more by decreasing lightness (ΔL′) than changes in chroma (ΔC′). Conclusions EverX resulted in higher ΔEoo of the restoration than Biodentine and experimental HAP after staining in red wine. No significant differences in ΔEoo may be expected in different composites with the same underlying dentin replacement material. The same was generally true for bulk‐fill and universal composites. Clinical Significance Similar extent of color changes may be expected in bulk‐fill and universal composites. Highly translucent everX might exhibit greater color differences irrespective of the capping composite than non‐translucent materials. Clinicians have a wider choice of composite materials to cover a particular dentin replacement material, for example, everX or Biodentine, as similar color differences may be expected in various overlying composite brands.

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Influence of background/surrounding area on accuracy of visual color matching

Cited by 46 publications

References 36 publications

The effect of gender and clinical experience on shade perception

The effect of gender and clinical experience on shade perception

Influence of Surrounding Conditions on Visual Determination of Tooth Shade

Color stability of bulk‐fill and universal composite restorations with dissimilar dentin replacement materials

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