The objectives of this study were as follows to study oral health care behaviors of Primary-6 students, Ban Bo Koo School, Tha Luang Subdistrict, Tha Luang District, Lopburi Province. The samples used in this study were Primary-6 students, Ban Bo Koo School, Tha Luang Subdistrict, Tha Luang District, Lop Buri Province, in the first semester of the academic year 2022, total of 1 classroom 25 people. The instrument used in the questionnaire on oral cleaning behavior of Primary-6 students, Ban Bo Koo School, Tha Luang District, Lopburi Province, the statistics used for data analysis were average. The results of the study found that  1. A study of oral health care behavior of Primary-6 students, Ban Bo Koo School, Tha Luang Subdistrict, Tha Luang District, Lopburi Province by using a questionnaire on oral cleaning behavior. It involves knowledge of oral and dental health care for children. By getting to know that human teeth have 2 sets, permanent teeth and milk teeth. In general childhood oral health, there are 20 milk teeth, and 32 permanent teeth. If children have gingivitis, they tend to have severe bad breath. In addition, eating starchy foods, and sugars, can lead to obesity and cause tooth decay. 2. Attitudes about viewing and oral health among Primary-6 students, with which they have a better understanding of dental practice. For example, they try to brush their teeth properly to remove food particles and plaque from between their teeth. They recognize that these are the causes of tooth decay and gingivitis, and good oral health can lead to good health. 3. The viewing behavior and oral health of Primary-6 students, most of them behave at a good level. Students have a good understanding of oral health care and mostly use fluoride toothpaste. Students have a place to brush their teeth after lunch within the school grounds.

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