Objective: Oral acidity level that can be assessed from salivary pH is one of indicator for oral health. Diet can change the pH level of saliva, in which low salivary pH caused demineralization of dental email. Milk and cheese have been proven to increase salivary pH because of anticariogenic activity due to the content of casein, calcium, and casein phosphopeptides. This study was aimed to compare the effectivity of packaged cow’s milk and packaged Cheddar cheese to increase salivary pH.; Method: This study was an experimental study with pretest-posttest design. Samples were 35 students in Dentistry of Andalas University, which corresponding to inclusion criteria consumed 125ml packaged cow’s milk and 17gr packaged cheddar cheese in 1 minute on two different days. Salivary pH was measured at time intervals of 5 minutes after consuming soft drink, 5, 10, 15, and 30 minutes after consuming packaged cow’s milk and packaged Cheddar cheese. The data was analyzed by using Wilcoxon and Mann-Whitney statistic test; Result: Wilcoxon test result showed no significant difference in packaged cow’s milk group (p>0,05), and there was a significant difference in packaged cheddar cheese group (p<0,05). Mann-Whitney test result showed a significant difference at 5 and 10 minutes posttest between two groups (p<0,05); Conclusion: There was significant difference in salivary pH between two groups. Packaged cheddar cheese showed significant difference in salivary pH after consumption than packaged cow’s milk.

Dental health education can be applied by the Whatsapp Messenger and learning tools. Whatsapp is a free messenger application that is widely used by internet users including teenagers in sending multimedia with simple text messages. Learning tools are one of the learning media commonly used in dental health education activities. Objective: To find out the comparison of dental health education through the Whatsapp Messenger with learning tools on behavioral changes of students at SMAN 3 Padang. Research method: This study used a quasy experimental with pret and post-test design. The research sample was divided into groups containing through the media the Whatsapp Messenger and groups with learning tools. The Wilcoxon trial to compare the pretest and posttest of each group and the Mann Whitney test to compare effectiveness in the Whatsapp group and learning tools group. Results: There was a significant changes in increasing knowledge, attitudes, actions and behaviors in Whatsapp Group an learning tools group after getting trials (p<0.05). There is a difference in effectiveness between Whatsapp Media and learning tools media in increasing changes in knowledge, actions and behavior (p<0.05), but there is no difference in effectiveness between Whatsapp media and learning tools media in increasing attitude changes (p>0.05). Conclusion: There is a difference in dental health education through the application of Whatsapp media with teaching aids media to the changing functions of students of SMAN 3 Padang