scholarly journals Development of an image‐based measurement system for human facial skin colour

Author(s):  
Ruili He ◽  
Kaida Xiao ◽  
Michael Pointer ◽  
Yoav Bressler ◽  
Zhen Liu ◽  
...  

Author(s):  
Arjun Hari Rijal ◽  
Bhageshwar Dhami ◽  
Nashib Pandey ◽  
Deepa Aryal

Introduction: The facial appearance depends on several oral and extraoral factors including colour of facial skin and pigmentation of gingival epithelium. The colour of the gingiva varies among individuals and is thought to be associated with cutaneous pigmentation which ranges from light to dark brown or black colour. Objective: To assess the prevalence of physiological gingival pigmentation, gingival biotype and their association with skin colur in Nepalese subjects visiting Kantipur Dental College and Hospital (KDCH). Methods: This was an analytical cross-sectional study which was carried out from February 2020 to June 2020 in all patients of age-group 16 to 80 years visiting the Department of Periodontics at KDCH after ethical approval. Patients were recruited by convenience sampling and examined thoroughly to find out gingival biotype and extent of gingival pigmentation intraorally as well as skin colour extraorally. Results: In this study, 210 patients were examined among which, 105 (50%) were males and 105 (50%) were females. Out of 210, 33 (15.7%) had pink tissue without pigmentation, 84 (40%) had pigmentation only in attached gingiva, 58 (27.6%) in attached gingiva and interdental papilla, 32 (15.2%) had diffuse pigmentation involving all parts of gingiva, 2 (1%) had in marginal gingiva only, and 1 (0.5%) in marginal gingiva and interdental papilla. Conclusion: A strong association was found between gingival pigmentation and facial skin colour in present study (P <0.001). Establishing the pattern of gingival pigmentation in Nepalese population will help to choose a specific depigmentation therapy that will harmonise with skin colour.  



3D Research ◽  
2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Mohammed Hazim Alkawaz ◽  
Dzulkifli Mohamad ◽  
Tanzila Saba ◽  
Ahmad Hoirul Basori ◽  
Amjad Rehman


Author(s):  
Mohammed Hazim Alkawaz ◽  
Dzulkifli Mohamad ◽  
Ahmad Hoirul Basori ◽  
Farhan Mohamed


2019 ◽  
Vol 26 (3) ◽  
pp. 362-368 ◽  
Author(s):  
Sangseob Leem ◽  
Junghwa Chang ◽  
Yunkwan Kim ◽  
Joong‐Gon Shin ◽  
Hae Jung Song ◽  
...  


2002 ◽  
Vol 16 (3) ◽  
pp. 150-157 ◽  
Author(s):  
Sharon R. Holmes ◽  
Stuart King ◽  
J.R. Rollin Scott ◽  
Stacy Clemes

Abstract A change in facial skin colour from a normal hue toward increasing pallor has been associated with the development of motion sickness. This paper describes an experiment which investigated the use of a white-light reflectance technique for the objective measurement of skin colour during exposure to nauseogenic motion. Twelve subjects participated in four counterbalanced motion conditions, one week apart, with skin colour measurements obtained in the two conditions most likely to result in motion sickness: 0.285 Hz lateral linear and swing oscillations at 2.5 ms-2 peak acceleration. Skin colour measurements, using the L*a*b* colour space, were taken from the forehead, and subjective ratings of sickness (on a 0-6 scale) were obtained during a 12-minute baseline period, a 40-minute (maximum) exposure period and for the first 5 minutes of recovery. There was a significant effect of subjective ratings of sickness on the change from baseline in the a* axis of the L*a*b* skin colour coordinates (P < .001). This was attributable to a reduction in red tone at rating 6 (“moderate nausea”) compared to ratings 0, 1, and 2 (“no symptoms” - “mild symptoms”, P < .05). This study showed an increase in skin pallor, as revealed by a decrease in the degree of red tone in the skin, with the development of moderate nausea during nauseogenic motion exposure. This implies increased sympathetic nervous system vasoconstriction of the superficial facial blood vessels. Skin colour readings using the reflectance meter were easy to obtain and analyse.



2019 ◽  
Vol 42 (1) ◽  
pp. 99-107 ◽  
Author(s):  
P. Séroul ◽  
R. Campiche ◽  
S. Gougeon ◽  
M. Cherel ◽  
A.V. Rawlings ◽  
...  




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