Table of Contents
ISRN Dentistry
Volume 2013 (2013), Article ID 687139, 6 pages
Research Article

Relationship between Subjective Oral Health Status and Lifestyle in Elderly People: A Cross-Sectional Study in Japan

1Department of Oral Health Science and Social Welfare, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8504, Japan
2Department of Hygiene and Oral Health Science, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8504, Japan
3Medical Corporation Smile-kai Yoshida Dental Clinic, Minoh City, Osaka 562-0036, Japan
4Kagawa Dental Association, Takamatsu City, Kagawa 760-020, Japan

Received 8 March 2013; Accepted 18 April 2013

Academic Editors: F. Cairo and M. Del Fabbro

Copyright © 2013 Masami Yoshioka 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.


Objective. The aim of this study was to assess the relationship between subjective oral health status and lifestyle in elderly people living in Japan. Methods. Subjects were 5383 inhabitants of the Kagawa Prefecture, Japan, at the age of 75–100. Records of the number of remaining teeth and the data from self-reported questionnaire were analyzed statistically. Results. Remaining teeth were significantly correlated to “no current smoking,” while not related to other lifestyle. On the other hand, “subjective masticatory ability” defined as a condition allowing chewing all foods well was related to favorable lifestyles. “Subjective masticatory ability” was also related to “not feeling stress,” “no deviated food habit” as well as to other good oral health conditions. A logistic regression analysis for “remaining teeth more than 20” revealed a significant relationship between “no current smoking” (OR = 1.582) and “no alcohol drinking” (OR = 0.851). Regarding “subjective masticatory ability,” all favorable lifestyles analyzed in this study were found to be significant positive factors. Conclusions. “Subjective masticatory ability” seems to be strongly associated with favorable lifestyles. Therefore, it can be suggested that “subjective masticatory ability” might be a good landmark for quality of life of elderly people in addition to the number of remaining teeth.