NCT05448664

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

Health Belief Model and Family-based Mobile-health Intervention to Promote Oral Health in Adolescents: A Cluster Randomized Controlled Trial

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 900 (estimated)
• Sponsor: The University of Hong Kong · Academic / Other
• Sex: All
• Age: 12 Years – 15 Years
• Healthy volunteers: Accepted

Summary

The aim of this study is to investigate the effectiveness of the family and behavioral theory based mobile-health behavioral intervention in enhancing adolescents'good oral health behaviors (mainly oral hygiene practice and free sugar intake control) and preventing common oral diseases (dental caries and periodontal diseases).

Detailed description

The investigators propose a 30-months clustered randomized controlled trial to investigate the effectiveness of Health Belief Model (HBM) and family-based mobile-health intervention in enhancing the adolescents' good oral health behaviors and preventing oral diseases. This is a three-arm parallel-design cluster-randomized controlled trial. Parents and their children (12 to 15-year-old) will be recruited and randomized into 3 groups based on the school sites. Messages targeted on six domains guided by HBM will be sent to the adolescents and their parents via mobile phone. Two blocks of HBM-based oral health messages, reminders, feedback and reinforcement messages will be delivered to both students and parents by mobile phone for 24 weeks; while the intervention of the other 2 groups will target on students only or using prevailing oral health education. The primary outcomes will be caries increment of the adolescents 2-year post-intervention. Change in oral health self-efficacy and behaviors, dental plaque and gingival bleeding index will be the secondary outcomes. The investigators anticipate the proposed family- and HBM-based behavioral intervention is more effective than HBM-based mobile-health intervention on adolescents alone or prevailing oral health education in improving the adolescents' oral hygiene behaviors, reducing free-sugar intake and preventing oral diseases.

Conditions

• Oral Health

Interventions

Type	Name	Description
BEHAVIORAL	Family HBM- mobile messaging	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.
BEHAVIORAL	Adolescent HBM- mobile messaging	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.
BEHAVIORAL	Adolescent e-pamphlets	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.

Timeline

• Start date: 2023-04-01
• Primary completion: 2025-07-30
• Completion: 2025-12-30
• First posted: 2022-07-07
• Last updated: 2023-05-18

Locations

1 site across 1 country: Hong Kong