Purpose: New methods of public education in oral care must be developed, because the public understanding of the importance of oral care is insufficient. This questionnaire study examined the parameters 'awareness and attitude relevant to teeth and mouth' and 'consciousness and attitude of daily life' in order to clarify what kind of information is needed for public education in oral care. Materials and Methods: Data gathered in a survey of oral care behaviours and lifestyle among the elderly were analysed for oral care awareness and health of the teeth using the factor analysis method. The respondents were divided into four groups according to two factors relating to oral health condition and oral care awareness. Results: The high oral-care-consciousness group had a greater awareness of general health and sociability as well as life satisfaction than did the low oral-care-consciousness group. However, the respondents' economic situation had a larger effect on life satisfaction. The respondents were then divided into higher, middle, and lower economic status groups, and the relation between oral care awareness and life satisfaction was analysed for each group. As a result, the correlation between life satisfaction and oral care consciousness was observed by excluding the economic factors. Conclusion: The present data suggest that oral care awareness may contribute to improvement of lifestyle and life satisfaction. Keywords: public awareness, public education, factor analysis, healthy life, life satisfaction, oral care, questionnaires