Color comparison between non-vital and vital teeth
The aim of this study was to define a color space of non-vital teeth and to compare it with the color space of matched vital teeth, recorded in the same patients. In a group of 218 patients, with the age range from 17 to 70, the middle third of the buccal surface of 359 devitalized teeth was measure...
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Veröffentlicht in: | The journal of advanced prosthodontics 2018, 10(3), 46, pp.218-226 |
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Sprache: | eng |
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Zusammenfassung: | The aim of this study was to define a color space of non-vital teeth and to compare it with the color space of matched vital teeth, recorded in the same patients.
In a group of 218 patients, with the age range from 17 to 70, the middle third of the buccal surface of 359 devitalized teeth was measured using a clinical spectrophotometer (Vita Easyshade Advance). Lightness (L
), chromatic parameters (a
, b
), chroma (C
), hue angle (h) and the closest Vita shade in Classical and 3D Master codifications were recorded. For each patient, the same data were recorded in a vital reference tooth. The measurements were performed by the same operator with the same spectrophotometer, using a standardized protocol for color evaluation.
The color coordinates of non-vital teeth varied as follows: lightness L
: 52.83-92.93, C
: 8.23-58.90, h: 51.20-101.53, a
: -2.53-24.80, b
: 8.10-53.43. For the reference vital teeth, the ranges of color parameters were: L
: 60.90-97.16, C
: 8.43-39.23, h: 75.30-101.13, a
: -2.36-9.60, b
: 8.36-39.23. The color differences between vital and non-vital teeth depended on tooth group, but not on patient age.
Non-vital teeth had a wider color space than vital ones. Non-vital teeth were darker (decreased lightness), more saturated (increased chroma), and with an increased range of the hue interval. An increased tendency towards positive values on the a
and b
axes suggested redder and yellower non-vital teeth compared to vital ones. |
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ISSN: | 2005-7806 2005-7814 |
DOI: | 10.4047/jap.2018.10.3.218 |