Mobile-health Intervention to Promote Oral Health in Adolescents: A Cluster Randomized Controlled Trial

The intervention will consist of two blocks of text messaging based on HBM model, the messages will be sent to the students and their parents in the following 24 weeks.

The intervention will consist of two blocks of text messaging based on HBM model, the messages will be sent to the students in the following 24 weeks.

The contents of e-version of three pamphlets, published by Department of Health (http://www.toothclub.gov.hk/en/en\_index.html) will be distributed in an electronic form and sent via a mobile message.