Effectiveness of visual instruction skit and sign language on oral health status among 5-18-year-old hearing-impaired children in South India: A cluster randomized clinical trial.

Background: Literature on the effectiveness of theory-based oral health education on the oral hygiene status of hearing-impaired children is limited.

Aim: To determine the effectiveness of a school oral health education intervention on oral hygiene status and oral health-related knowledge among 5-18-year-old children in Andhra Pradesh, India.

Materials And Methods: A cluster randomized clinical trial was conducted among all institutionalized hearing-impaired children and young adults residing in various special care schools in Nellore district.