Abstract
Objectives: The purpose of this study is to identify the factors that affect tooth brushing after lunch in Korean adolescents. Methods: This study used raw data from the national youth policy institute cross-sectional survey. The subjects were selected from 8,147 people who responded to the question to check whether they had brushed their teeth after lunch for the last 7 days, and were classified into elementary, middle, and high school students and analyzed by group. Independent variables were selected by demographic, socioeconomic, health behavior, health awareness, and school environment factors. Results: After adjusting for demographic and socioeconomic factors, elementary school students brushed their teeth after lunch 1.24 times more often when the school bathroom was clean (