“…First, since our main objective was to assess the relationship of subjective and clinical oral conditions with perception of one's oral health, other factors not included in the analysis may increase its explanatory power-for example, factors such as socioeconomic status, use of dental services, oral health behaviors, and oral health attitudes or beliefs. 20 Second, we evaluated a sample that was derived from a certain community population; therefore, the present report could not be generalized to the overall Japanese population. However, the study subjects were free-living residents, not a special group of people such as dental patients; and the oral health status of subjects was similar to that of subjects in the Japanese national survey.…”