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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Inorganic chemistry 7 (1968), S. 2471-2478 
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of prosthodontics 3 (1994), S. 0 
    ISSN: 1532-849X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study examines how the color coordinates of human teeth are related to each other and describes a mathematical relationship between Hue, Value, and Chroma of the middle site of anterior teeth.〈section xml:id="abs1-2"〉〈title type="main"〉Materials and MethodsThe color coordinates obtained from a previous instrumental survey of the colors of vital teeth (see Goodkind and Schwabacher8) were examined statistically, and equations were sought to describe their distribution in color space. The resulting single equation was applied to the colors of 100 extracted teeth.〈section xml:id="abs1-3"〉〈title type="main"〉ResultsCorrelations between Hue, Value, and Chroma were not significant for incisal and cervical sites. For the middle site, these Munsell color coordinates were highly correlated and closely confined to a planar region of the color space, described by a single equation.〈section xml:id="abs1-4"〉〈title type="main"〉ConclusionsHuman tooth color distribution seems to be relatively simple, at least for the middle site. It seems possible that a systematic method of shade selection (see Goodkind and Loupe15) can be made available.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of prosthodontics 1 (1992), S. 0 
    ISSN: 1532-849X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Purpose The purpose of this study was to develop and evaluate an experimental body porcelain tooth shade-guide system based on in-vivo color measurements. This system was tested against two widely used commercial body shade porcelains.Materials and Methods A body porcelain shade guide consisting of 16 tabs was fabricated from available opaques, body, and incisal porcelains and modified with metallic oxide tints. The target Hue, Value and Chroma of these tabs were based on middle-site in-vivo tooth color measurements reported by Goodkind and Schwabacher in 1987. Two control groups of body porcelains were fabricated from Ceramco and Bioform porcelains. A new Dental Shade Comparator was used in a clinical test of these tabs in visually matching middle sites of 300 maxillary anterior teeth of 103 subjects.Results The demographic trends in Hue, Value and Chroma were in agreement with those found in the previous study. Four of the 16 experimental body shade tabs were frequently chosen compared with 13 of 16 Ceramco and 3 of 25 Bioform body shades. Intraexaminer and interexaminer reliability tests showed good agreement using the new Dental Shade Comparator.Conclusions The 20 shade tabs that were most frequently selected as a 1st or 2nd choice ranged from 8.25YR to 1.80Y in Hue, 6.45/to 8.00/in Value and/2.05 to/4.15 in Chroma. The new Dental Shade Comparator is a useful tool in the task of shade matching. The current Ceramco II body shades contain many useful porcelains that should be augmented with higher value and with redder, darker shades.
    Type of Medium: Electronic Resource
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