Pengaruh Dental Health Education Cara Menyikat Gigi disertai Demonstrasi terhadap Tingkat Pengetahuan Kebersihan Gigi pada Siswa Kelas V SDN Padangdangan 1

(The Effect of Dental Health Education on How to Brush Teeth with Demonstration on the Knowledge Level of Dental Hygiene in Grade 5 Students of SDN Padangdangan 1)