The present study aimed to ascertain the oral health of young individuals according to their oral
symptoms and oral health behaviors. In doing so, we intend to provide foundational data for the
establishment of continued oral health education, which is required to make positive changes to oral health
behavior. We conducted oral health examinations as well as self-report surveys for identifying oral
symptoms and oral health behaviors of 288 high school students who visited the K Hospital, Busan, South
Korea, between May and October 2014. In the dental health examination, the majority of the subjects had
the result ‘None’ for the number of teeth showing dental caries (162 persons, 56.3%) and ‘1–4’ for the
number of teeth at risk of developing dental caries (168 persons, 58.3%). Meanwhile, with respect to oral
hygiene, 155 students (53.8%) were rated as ‘Excellent’ and 123 (42.7%) as ‘Hope for Improvement’. In
terms of oral health behavior, 74.0% of the participants had not visited a dentist in the past year and
64.9% brushed their teeth less than twice a day. When asked about their level of consumption of sugary
foods and drinks such as snacks and cola, 52.8% of the participants responded with ‘Average’, and when
asked if the toothpaste they were currently using contained fluorine, the most common response (39.2%)
was ‘I don’t know’. When analyzing the correlation between identification of oral symptoms, oral care
behavior, and incidence of dental caries, there was a positive correlation between the number of teeth
showing dental caries and oral hygiene (r=0.914, p<0.000), and there was a strong negative correlation
between the number of teeth at risk of developing dental caries and the use of fluorine-containing
toothpaste (r=-0.119, p<0.05) and between oral hygiene and the consumption of sugary foods (r=-0.560,
p<0.000). Combining the above results, it can be seen that oral symptoms and oral care behavior in young
individuals has a significant effect on dental caries. Therefore, systematic projects to promote oral health
and oral health education programs need to be developed to encourage treatment and oral health care at the
appropriate time and to create a positive change in oral health behavior.