title: Association between use of tobacco and age on graying of hair.
abstract: OBJECTIVE
  To determine the association between smoking, chewing tobacco (gutka), and age of individual on graying of hair.
  
  
  METHODS
  The present study was conducted on 120 patients attending the Outpatient Department of the DJ College of Dental Sciences and Research, Modinagar, UP. The individuals were classified into four groups (group I, II, III, IV) on the basis of the form of tobacco use (smoking or chewing). The Pearson correlation coefficient was utilized to find the correlation between the mean percentage of individuals with gray hair, risk multiplication factor (RMF), and age of the individual.
  
  
  RESULTS
  Mean percentage of individual with gray hair and RMF (r = 0.6487) are found to be positively associated. A significant and positive correlation was observed between the age of the individual and the frequency of individuals with gray hair.
  
  
  CONCLUSIONS
  This study suggests that there is a significant association between tobacco use and aging on graying of hair.
authors.affiliation: Department of Oral and Maxillofacial Pathology, DJ College of Dental Sciences, Ghaziabad, Uttar Pradesh, India.
authors.forename: Robin
authors.initials: R
authors.lastname: Sabharwal
authors.affiliation: Chandra Dental College, Barabanki, Uttar Pradesh, India.
authors.forename: Atul
authors.initials: A
authors.lastname: Gupta
authors.affiliation: RKDF Dental College and Research Center, Bhopal, Madhya Pradesh, India.
authors.forename: Ninad
authors.initials: N
authors.lastname: Moon
authors.affiliation: Chandra Dental College, Barabanki, Uttar Pradesh, India.
authors.forename: Ashish
authors.initials: A
authors.lastname: Mahendra
authors.affiliation: Mansarovar Dental College and Research Centre, Bhopal, India.
authors.forename: Vinod
authors.initials: V
authors.lastname: Sargaiyan
authors.affiliation: Purvanchal Institute of Dental Sciences, Gorakhpur, Uttar Pradesh, India.
authors.forename: Asheesh
authors.initials: A
authors.lastname: Gupta
authors.affiliation: Institute of Dental Sciences, Bhubneshwar, India.
authors.forename: Santosh Kumar
authors.initials: SK
authors.lastname: Subudhi
authors.affiliation: Department of Periodontology, DJ College of Dental Sciences, Ghaziabad, Uttar Pradesh, India.
authors.forename: Shivangi
authors.initials: S
authors.lastname: Gupta
keywords: Graying of hair; risk multiplication factor; smoking