Dental and oral problems, especially dental caries, can be influenced by several crucial factors, e.g., environment, health care, behaviour, knowledge, and heredity. Knowledge and behaviour are imperative and have a part in determining the dental care and dental hygiene of a person. According to the data from Basic Health Research (Riset Kesehatan Dasar – Riskesdas) of 2018, 96.5% of children aged 10-14 had brushed their teeth daily, but only 2.1% knew and could brush their teeth at the right time. Objective: to investigate the knowledge level and dental and oral care behaviour, in elementary school students in grades IV-VI. Methods: This research is a quantitative research with the sampling method used is proportionate stratified random sampling. The data collection technique used a questionnaire distributed to elementary school students in grades IV-VI. Results: From 311 samples consisted of elementary students grade IV-VI in Gunung Bahagia Ward, 97.4% (n=303) of the samples had good level of knowledge and 48.9% (n=152) of the samples had moderate category in dental and oral care behaviour. Conclusion: The level of knowledge and behavior of dental and oral health care for elementary school students in grades IV-VI in Gunung Bahagia, Balikpapan City is in good condition.
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