title: Factors Affecting Tooth Retention among Adult Population of Dharwad District, India.
abstract: BACKGROUND
  Oral health in relation to general health is influen-ced by the retention of teeth. Understanding factors affecting tooth retention will help health and social policy-makers to translate the knowledge on tooth retention into action programs for improving oral health of the people and hence enhance tooth retention.
  
  
  OBJECTIVE
  The aim of the present study was to determine the factors affecting tooth retention among adult population of Dharwad district, India.
  
  
  METHODS
  A cross-sectional survey of 1100 subjects (616 urban and 484 rural) residing in Dharwad district, Karnataka, India, was conducted. Self-designed questionnaire was prepared and data were collected on socio-demographic factors, oral hygiene practices, diet practices, adverse oral habits and frequency of dental visits by the interview method and clinical examination. Statistical analysis was carried out by applying one way analysis of variance (ANOVA), unpaired t-test and backward stepwise multiple regression. Karl Pearson's correlation coefficient was used to test the correlation between the two quantitative variables.
  
  
  RESULTS
  A total of 66.72% subjects retained all 28 teeth and mean number of teeth retained by the study subjects were 25.33 (90.46%). There was gradual reduction in tooth retention with increase in age. Males (95.8%) compared to females (94.07%), unmarried (98.8%) than married subjects (93.3%) and subjects with intermediate or post high school diploma (97.5%) than those who were illiterate (89.5%) and other low educational level study subjects retained more teeth. Further mean values of tooth retention for other socio demographic factors i.e., occupation, income and family size were not statistically significant (p≤0.05). In addition, subjects using tooth brush (96.6%) and tooth paste (96.6%) for cleaning the teeth, subjects practicing mixed diet (96.6%) and subjects who never visited the dentist (96.5%) in their lifetime showed statistically significant greater tooth retention than study subjects who visited the dentist infrequently (92.7%) (p≤0.05) (p=significance level).
  
  
  CONCLUSIONS
  Males compared to females, lower age, profess-ionals compared to illiterates, unmarried and mixed diet population, tooth brush and tooth paste users and population who never visited dentist showed more tooth retention.
authors.affiliation: Assistant Professor, Department of Public Health Dentistry, Al-Ameen Dental College and Hospital , Bijapur, Karnataka, India .
authors.forename: Salma H
authors.initials: SH
authors.lastname: Mulla
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics, Al-Ameen Dental College and Hospital , Bijapur, Karnataka, India .
authors.forename: Nurul Ameen
authors.initials: NA
authors.lastname: Inamdar
authors.affiliation: Professor and Head, Department of Public Health Dentistry, SDM College of Dental Sciences and Hospital , Dharwad, Karnataka, India .
authors.forename: K V V
authors.initials: KV
authors.lastname: Prasad
keywords: Cross-sectional study; Oral health; Self-designed questionnaire