Objectives: The purpose of this study was to examine the functional oral health literacy and its influencing factors among adults.
Methods: The subjects were 760 adults living in the cities of Iksan and Jeonju. A survey was conducted among 18-59-year-olds. Adults who were 60 years of age or older were also selected by convenience sampling and interviewed.
Results: In total, 36 percent of the adults tested on functional oral health literacy scored a seven or less on our survey, indicating that their functional oral health literacy was inadequate. Functional oral health literacy was related to age, educational level (especially, low levels of math) and family income.
Conclusions: Many adults have poor functional oral health literacy. Therefore, improvement programs for oral health literacy for adults need to be developed, taking into account their social characteristics.

Keywords: Functional, Health literacy, Oral health, TOFHLiD