Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function
Introduction: Mastication is one of the essential stomatognathic functions and is impaired when mandibulectomy is performed for removal of head and neck lesions. Aim: The purpose of this study was to investigate the correlation between perceived chewing ability {Masticatory Score (MS)} and obje...
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doaj-ef7b938fbeea4e28a850ecb52f7d2e992020-11-25T02:03:35ZengJCDR Research and Publications Private LimitedJournal of Clinical and Diagnostic Research2249-782X0973-709X2017-04-01114ZC119ZC12310.7860/JCDR/2017/23950.9754Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory FunctionYesiboli Yeerken0Takafumi Otomaru1Mohamed Said2Na Li3Hisashi Taniguchi4PhD Student, Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Tokyo, Japan.Assistant Professor, Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Tokyo, Japan.PhD Student, Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Tokyo, Japan.PhD Student, Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Tokyo, Japan.Professor, Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University (TMDU), Bunkyo, Tokyo, Japan.Introduction: Mastication is one of the essential stomatognathic functions and is impaired when mandibulectomy is performed for removal of head and neck lesions. Aim: The purpose of this study was to investigate the correlation between perceived chewing ability {Masticatory Score (MS)} and objective mixing ability (∆E) in patients who had undergone marginal mandibulectomy. Materials and Methods: Twenty normal dentate subjects as control group and twenty mandibulectomy patients who had undergone marginal mandibulectomy and wearing a dentomaxillary prosthesis were enrolled. Perceived chewing ability MS and objective ∆E were evaluated using a food intake questionnaire and the colour-changeable chewing gum, respectively. They were instructed to chew the gum continuously for 100 strokes on their usual side. The chewed gum was measured using the CIELAB colour space defined by a colourimeter and L, a* and b* were obtained. The change in colour of the gum after chewing was calculated using CIELAB (∆Eab) and the CIEDE2000 (∆E00) formula. The relationships of a*, ∆Eab, and ∆E00 with MS score were analyzed using the Spearman’s rank correlation coefficient. Results: A correlation was found between perceived chewing ability (MS) and objective mixing ability (index of the masticatory function {∆E}) in marginal mandibulectomy patients. (∆E00 = 0.481, a* = 0.587, ∆Eab = 0.668). Conclusion: Within the limitations of this study, it can be concluded that the CIEDE2000 formula for calculation of colour difference can be used to evaluate masticatory function in patients who have undergone marginal mandibulectomy.https://jcdr.net/articles/PDF/9754/23950_CE[Ra1]_F(GH)_PF1(SH_SS)_PFA(SS)_PF2(P_NESY).pdfdentomaxillarymarginal mandibulectomyobjective evaluationobjective mixing abilityprosthesis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yesiboli Yeerken Takafumi Otomaru Mohamed Said Na Li Hisashi Taniguchi |
spellingShingle |
Yesiboli Yeerken Takafumi Otomaru Mohamed Said Na Li Hisashi Taniguchi Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function Journal of Clinical and Diagnostic Research dentomaxillary marginal mandibulectomy objective evaluation objective mixing ability prosthesis |
author_facet |
Yesiboli Yeerken Takafumi Otomaru Mohamed Said Na Li Hisashi Taniguchi |
author_sort |
Yesiboli Yeerken |
title |
Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function |
title_short |
Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function |
title_full |
Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function |
title_fullStr |
Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function |
title_full_unstemmed |
Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function |
title_sort |
applicability of the cielab and ciede2000 formulae for detection of colour changes in colour-changeable chewing gum for evaluating masticatory function |
publisher |
JCDR Research and Publications Private Limited |
series |
Journal of Clinical and Diagnostic Research |
issn |
2249-782X 0973-709X |
publishDate |
2017-04-01 |
description |
Introduction: Mastication is one of the essential stomatognathic
functions and is impaired when mandibulectomy is performed
for removal of head and neck lesions.
Aim: The purpose of this study was to investigate the correlation
between perceived chewing ability {Masticatory Score (MS)}
and objective mixing ability (∆E) in patients who had undergone
marginal mandibulectomy.
Materials and Methods: Twenty normal dentate subjects
as control group and twenty mandibulectomy patients who
had undergone marginal mandibulectomy and wearing a
dentomaxillary prosthesis were enrolled. Perceived chewing
ability MS and objective ∆E were evaluated using a food
intake questionnaire and the colour-changeable chewing
gum, respectively. They were instructed to chew the gum
continuously for 100 strokes on their usual side. The chewed
gum was measured using the CIELAB colour space defined by
a colourimeter and L, a* and b* were obtained. The change in
colour of the gum after chewing was calculated using CIELAB
(∆Eab) and the CIEDE2000 (∆E00) formula. The relationships
of a*, ∆Eab, and ∆E00 with MS score were analyzed using the
Spearman’s rank correlation coefficient.
Results: A correlation was found between perceived chewing
ability (MS) and objective mixing ability (index of the masticatory
function {∆E}) in marginal mandibulectomy patients. (∆E00 =
0.481, a* = 0.587, ∆Eab = 0.668).
Conclusion: Within the limitations of this study, it can be
concluded that the CIEDE2000 formula for calculation of colour
difference can be used to evaluate masticatory function in
patients who have undergone marginal mandibulectomy. |
topic |
dentomaxillary marginal mandibulectomy objective evaluation objective mixing ability prosthesis |
url |
https://jcdr.net/articles/PDF/9754/23950_CE[Ra1]_F(GH)_PF1(SH_SS)_PFA(SS)_PF2(P_NESY).pdf |
work_keys_str_mv |
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