Intervention Study of Oral Health Education Programs Directed to Adolescents

Procedure: The theory-based educational intervention follows a specific structure. The initial phase contain 3 treatment sessions (45-60 min each) during a period of 12 weeks (baseline, 2-3 weeks and 10-12 weeks). Follow up are performed at 6- and 18-months.

Procedure: The initial phase contain educational intervention in accordance with conventional routines (oral health information and oral hygiene instruction at one or several occasions). Follow up are performed at 6- and 18-months.