Knowledge of periodontal disease before and after a mass media campaign targeting periodontitis

Abstract: The aims were to evaluate if a mass media campaign regarding periodontal disease could increases the knowledge of diagnosis, symptom and treatment options of periodontal disease, and to analyse factors associated with knowledge before and after the campaign according to social attributes, care system attributes and perceived oral health aspects. The Swedish Association of Periodontology initiated the mass media campaign. It was conducted through brochures, newspapers, radio and television. The studies were based on a questionnaire in a panel design. From the national population register 900 individuals 50-75 years of age were randomly sampled. The response rate of the questionnaire was 70% before the campaign, 65% after and 64% answered both questionnaires. Data were analysed as to correct answers before and after the campaign and to change in knowledge. Knowledge improved about periodontitis regarding symptoms, diagnoses and treatment options of periodontal disease. Individuals with "secondary education" had more knowledge of periodontal disease both before and after the campaign, compared to individuals with "primary education". High utilization of dentistry was also associated with knowledge before and after the campaign. To conclude mass media campaigns may increase knowledge of periodontal disease.