Correlation between three color coordinates of human teeth

Lee, Yong-Keun

doi:10.1117/1.jbo.19.11.115006

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…The indicator of color and saturation on the blue-yellow axis is b*(with “b+” corresponding to yellow and “b-” to blue) [ 43 ]. In this study, a decline in b* was observed for the blue axis.…”

Section: Discussionmentioning

confidence: 99%

Effect of 1.5% potassium oxalate on sensitivity control, color change, and quality of life after at-home tooth whitening: A randomized, placebo-controlled clinical trial

et al. 2022

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Objective This clinical trial evaluated the effect of 1.5% potassium oxalate (PO) in controlling sensitivity and color change after at-home tooth whitening. It also evaluated the influence of PO on health-related quality of life (HRQoL) and the degree of patient satisfaction after bleaching treatment. Materials and methods Fifty volunteers were randomized into two groups (n = 25): At-home bleaching gel with 22% carbamide peroxide for 45 min + placebo gel (GP) or 1.5% PO (GPO) for 10 min. The intensity of tooth sensitivity was assessed daily through the visual analog scale. The color analysis was performed three times: baseline, 21 days, and 1 month after the last application of the whitening gel. The impact of the oral condition on the patient’s quality of life (OIDP) was used to measure the impact caused by the whitening treatment in relation to the individuals’ ability to carry out their daily activities and its influence on HRQOL. Results No difference in tooth sensitivity was observed (p > 0.05). In addition, there was no difference in color change between groups (p > 0.05). However, there was an intragroup statistical difference throughout the evaluation period (p <0.05). The OIDP analysis showed a statistical difference between the groups (p > 0.05) and there was no difference between the groups regarding the degree of satisfaction with the bleaching (p > 0.05). Conclusions The 1.5% PO was effective in preventing sensitivity and did not interfere with tooth whitening. Desensitizing therapy had a positive impact on quality of life and patient satisfaction.

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Section: Discussionmentioning

confidence: 99%

Effect of 1.5% potassium oxalate on sensitivity control, color change, and quality of life after at-home tooth whitening: A randomized, placebo-controlled clinical trial

et al. 2022

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“…The CIE-1976-L*a*b* chromaticity system in VITA Easyshade Advance4.0 software is used for analysis, and the CIE L*a*b* color notation system of CIE-Commission International e de L’eclairage (International Commission on Illumination) is the most commonly used in dental in vivo and in vitro studies and color characterization ( 20 , 21 ). In this system L*, a*, b* represent the lightness, chroma green-red coordinates (negative a is green, positive a is red) and chroma blue-yellow coordinates (negative b is blue, positive b is yellow), which is a cylindrical color space description, and tooth color can also be described in a cylindrical color space ( 22 ).…”

Section: Introductionmentioning

confidence: 99%

Measurement and analysis of maxillary anterior teeth color in the chinese population

Ruan¹,

Wang²

2023

J Clin Exp Dent

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Background To measure the difference in the crown color of the maxillary anterior teeth in the Chinese population, to study its potential regularity, and to provide a reference for the colorimetry of oral anterior teeth restoration. Material and Methods Using VITA Easyshade Advance4.0 spectrophotometer (the colorimetric system is CIE-1976-L*a*b*), adult patients who were treated in Sanming Integrated Medicine Hospital, Fujian Province, China, from January 2022 to June 2022 160 patients (88 males, 72 females, aged 20-60 years) were used as the survey subjects, and the L*a*b* of 1/3 of the crowns of 6 anterior teeth (central incisors, lateral incisors, canines) were measured Value, statistical analysis was performed with SPSS 26.0 software. Results The mean L* values of maxillary central incisors, lateral incisors, and canines in the Chinese population were: (73.02±4.41), (69.96±4.70), (65.14±4.21); the mean a* values were: (-0.54±4.21) 0.35), (0.22±0.63), (1.40±0.62), and the mean values of b* were: (14.50±3.23), (18.60±3.94), (23.64±3.30). 1. There was no significant difference in L*a*b* value between left and right symmetrical teeth with the same name ( P >0.05). 2. There was no statistical difference in the L*a*b* value between genders ( P >0.05), 3. There was a statistical difference in L*a*b* value between different tooth positions ( P < 0.05). 4. There were significant differences in L*a*b* values in different age groups ( P < 0.05). Conclusions 1. The color of the labial crown of maxillary anterior teeth in the Chinese population is related to different age groups and tooth positions but not gender. 2. In the Chinese population, the color of the maxillary anterior teeth on the labial side gradually decreased from the central incisor to the distal end of the dental arch while the chroma gradually increased. 3. With age increase, the L* and a* values of the upper central incisors, upper lateral incisors, and upper canines gradually decrease, and the b* value gradually increases. The teeth became darker, more yellow, and redder. 4. In the clinical colorimetry of the upper anterior teeth, the contralateral tooth with the same name is preferred. Suppose the tooth with the same name is missing at the same time. In that case, when using the adjacent teeth as a reference, the different brightness and chroma between the central incisors, lateral incisors, and canine teeth should be compared. Change trend to determine. 5. A uniform tooth color should not be selected for anterior restoration, and age should be considered when choosing a color for the patient. Key words: Upper anterior teeth, Crown color, CIE-1976-L*a*b*, spectrophotometric colorimeter.

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“…The CIE-1976-L*a*b* chromaticity system in VITA Easyshade Advance4.0 software is used for analysis, and the CIE L*a*b* color notation system of CIE-Commission International e de L'eclairage (International Commission on Illumination) is the most commonly used in dental in vivo and in vitro studies and color characterization [20] [21]. In this system L*, a*, b* represent the lightness, chroma green-red coordinates (negative a is green, positive a is red) and chroma blue-yellow coordinates (negative b is blue, positive b is yellow), which is a cylindrical color space description, and tooth color can also be described in a cylindrical color space [22].…”

Section: Introductionmentioning

confidence: 99%

Measurement and Analysis of Maxillary Anterior Teeth Color In The Chinese Population

Ruan

Wang

2022

Preprint

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Objective To measure the difference in the crown color of the maxillary anterior teeth in the Chinese population, to study its potential regularity, and to provide a reference for the colorimetry of oral anterior teeth restoration. Method Use VITA Easyshade Advance4.0 spectrophotometer to measure the color of 1/3 of maxillary anterior crowns in different age groups, use CIE-1976-L*a*b* color system to describe the color, use Spss26.0 software Statistical analysis was performed to obtain the trend of the color change of maxillary anterior teeth. Conclusion: 1. The color of the labial crown of maxillary anterior teeth in the Chinese population is related to different age groups and tooth positions but not gender. 2. In the Chinese population, the color of the maxillary anterior teeth on the labial side gradually decreased from the central incisor to the distal end of the dental arch while the chroma gradually increased. 3. With age increase, the L* and a* values of the upper central incisors, upper lateral incisors, and upper canines gradually decrease, and the b* value gradually increases. The teeth became darker, more yellow, and redder.

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Correlation between three color coordinates of human teeth

Cited by 4 publications

References 32 publications

Effect of 1.5% potassium oxalate on sensitivity control, color change, and quality of life after at-home tooth whitening: A randomized, placebo-controlled clinical trial

Effect of 1.5% potassium oxalate on sensitivity control, color change, and quality of life after at-home tooth whitening: A randomized, placebo-controlled clinical trial

Measurement and analysis of maxillary anterior teeth color in the chinese population

Measurement and Analysis of Maxillary Anterior Teeth Color In The Chinese Population

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