The effectiveness of education through videos and lectures about brushing teeth against plaque accumulation in elementary school students in medan sunggal sub-district

The target to be achieved in this study is elementary school students have good behavior to clean their teeth and
mouth. Brushing teeth can prevent caries and periodontal disease. The purpose of this study was to analyze the
effectiveness of education through videos and lectures about brushing teeth plaque accumulation in elementary
school children. This type of research is a quasi-experimental study with a pretest-posttest group with a control
design. The population is all students in the Elementary School Jl. Balam Sei Sikambing B, Medan Sunggal
sub-District with a total of 252 students. While the research sample is class IV and V with a total of 74 students,
according to the inclusion criteria. Plaque Index measurements were carried out before and after the
intervention. Univariate data analysis, to see the description and characteristics of each variable while the
bivariate data using paired-sample t-test and independent-sample t-Test. The results showed in the intervention
group through video the difference before and after was 1.73 while the intervention group with a lecture was
0.23. To find out the difference in the average before and after the intervention the t-test was conducted. The
statistical test obtained value p= 0,000 (p <0.005) meaning that there is a significant difference between the
plaque index before and after the intervention. Education through video reduces the Plaque Index more than
education through lectures. Need special attention to instill good and right behavior about brushing teeth in
elementary school students.
Keywords: Video, Lecture, Plaque Index