Influence of water sorption on resin composite color and color variation amongst various composite brands with identical shade code: An in vitro evaluation

Ardu, Stefano; Gutemberg, Daniel; Krejci, Ivo; Feilzer, Albert J.; Bella, Enrico Di; Dietschi, Didier

doi:10.1016/j.jdent.2011.06.010

Cited by 53 publications

(70 citation statements)

References 18 publications

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“…The use of a spectrophotometer was made to avoid all bias due to human eye evaluation, in accordance with precedent studies [6,[46][47][48] and to allow a double evaluation over a white as well as a black background. This double evaluation can simulate two different clinical situations [48]; the black background mimics class IV composite restorations, where no tooth structure exists in the back.…”

Section: Discussionmentioning

confidence: 99%

Color stability of recent composite resins

et al. 2016

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The objective of the study was to evaluate the color stability of 8 recently developed resin composites when exposed to various staining agents. Six disc-shaped specimens made out of 8 resin composite materials were immersed in artificial saliva, coffee, coke, tea, orange juice and red wine. The initial color (T0) of the 288 specimens was assessed by a calibrated reflectance spectrophotometer (SpectroShade, MHT) over a black as well as a white background. All specimens were kept in an incubator (INP-500, Memmert GmbH) at 37°C for 4 weeks. Colorant solutions were changed every 7 days to avoid bacteria or yeast contamination. After 4 weeks of storage in the colorants (T1), spectrophotometric measurements were repeated and DE00 was calculated. When analyzed over a white background, the mean DE00 values varied from 1.5 (Venus Diamond) to 52.4 (Miris 2). When analyzed over a black background, the mean DE00 values varied from 0.8 (Venus Diamond) to 40.0 (ELS). Significant differences were detected when comparing values at T0 and T1 (DE00) for both backgrounds (Anova and Fisher's LSD post hoc test). Resin composite materials do behave in a significantly different way (p value \ 0.01) when exposed to various staining solutions.

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Section: Discussionmentioning

confidence: 99%

Color stability of recent composite resins

et al. 2016

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“…Several authors, in fact, claimed that background cannot influence [9], may slightly influence [10] or can heavily influence [11][12][13] colour perception. Even within this last group of authors, no consensus was found on which is the ideal background that should be used for in vitro evaluations.…”

Section: Discussionmentioning

confidence: 99%

“…The clinical significance of colour differences was also analysed, following the methodology used in a previous study [11] with respect to human eye perception threshold, according to the confirmed range of colour change perceptibility or imperceptibility [20][21][22][23].…”

Section: Methodsmentioning

confidence: 99%

“…The influence of background is quite a controversial topic; in fact, it has been claimed to have no influence [9], little influence [10] or, as considered by the majority of authors, great influence [11][12][13] on colour perception. Within this last group, no consensus is found on which is the ideal background for in vitro evaluations and alternatively grey [14,15], white [16,17] or black [8,11] backgrounds have been proposed and used in resin composite laboratory tests.…”

Section: Introductionmentioning

confidence: 99%

“…Within this last group, no consensus is found on which is the ideal background for in vitro evaluations and alternatively grey [14,15], white [16,17] or black [8,11] backgrounds have been proposed and used in resin composite laboratory tests.…”

Section: Introductionmentioning

confidence: 99%

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Influence of background on natural tooth colour coordinates: an in vivo evaluation

Ardu

Braut

Bella³

et al. 2013

Odontology

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The aim of this study was to evaluate the influence of different backgrounds on spectrophotometric colour values of natural teeth. Twenty volunteers (10 males and 10 females) with a mean age of 25 years and 9 months (±3 years and 2 months) were each subjected to 4 spectrophotometric measurements of their upper right central incisor. Each sample was measured with alternatively black, 50 % grey, white or no background (positive control). DE medians ranged from 0.9 to 5.9. All artificial backgrounds presented significant differences (p \ 0.05) when compared to values obtained without any background. No significant differences were observed between black and 50 % grey background (p [ 0.05). If an artificial background needs to be used, as for example when performing in vitro studies, preference should be given to a black background as it approaches best the clinical situation (i.e. no background). Even if no statistically significant differences were found when compared with the grey background, the black background should be preferred due to its lower DE medians, standard deviation as well as lower minimum and maximum values.

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