Dental health problems among elementary students remain high due to poor oral hygiene behaviors. This study aims to determine the effect of health education using booklet media on improving oral hygiene knowledge among 4th-grade students at SDN Sakti, Pidie Regency. A quasi-experimental method with a pretest-posttest non-equivalent control group design was conducted on 59 samples (30 booklet intervention, 29 leaflet control). The post-intervention Independent T-Test result showed p=0.005 (p<0.05), indicating a significant difference. The mean knowledge score increase in the booklet group (17.00) was significantly higher than the leaflet group (10.00). In conclusion, health education using booklet media has been proven to significantly improve students' dental and oral hygiene knowledge compared to leaflet media.
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