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BioMed Research International
Volume 2013 (2013), Article ID 786462, 8 pages
Research Article

Epidemiology and Risk Factors of Tooth Loss among Iranian Adults: Findings from a Large Community-Based Study

1Dental Students’ Research Center, Isfahan University of Medical Sciences, Isfahan 81749-73461, Iran
2Department of Medicine, University of Alberta, Edmonton, AB, Canada T6G 2E1
3Integrative Functional Gastroenterology Research Center, Isfahan University of Medical Sciences, Isfahan 81749-73461, Iran
4Department of Biostatistics and Epidemiology, School of Public Health, Isfahan University of Medical Sciences, Hezar Jarib Street, Isfahan 81749-73461, Iran
5Department of Prosthodontics, Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan 81749-73461, Iran

Received 13 June 2013; Revised 25 August 2013; Accepted 29 August 2013

Academic Editor: Sabine Rohrmann

Copyright © 2013 Saber Khazaei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objectives. To investigate the prevalence of tooth loss and different prosthetic rehabilitations among Iranian adults, as well as the potential determinants of tooth loss. Methods. In a cross-sectional community-based study conducted among 8094 Iranian adults living in Isfahan province, a self-administered questionnaire was used to assess epidemiologic features of tooth loss. Results. Thirty-two percent of subjects had all their teeth, 58.6% had lost less than 6, and 7.2% of participants had lost more than 6 teeth. One hundred and sixty-nine individuals (2.2%) were edentulous. Among participants, 2.3% had single jaw removable partial denture, 3.6% had complete removable denture in both jaws, and 4.6% had fixed prosthesis. Others reported no prosthetic rehabilitation (89.5%). In the age subgroup analysis (≤35 and >35 years old) tooth loss was more prevalent among men than women ( and 1.9, resp., ). Also, in both age groups, current and former smokers had higher levels of tooth loss than nonsmokers ( and , resp.). In addition, tooth loss was positively related to metabolic abnormality for age group >35 years (adjusted , ). Conclusions. Tooth loss is highly prevalent in Iranian adult population. Community programs promoting oral health for prevention of tooth loss should be considered taking into account its major determinants including lower educational level, male gender, smoking, and metabolic abnormality.