Effectiveness of Educational Poster on Knowledge of Emergency Management of Dental Trauma - Part 2: Cluster Randomised Controlled Trial for Secondary School Students

ObjectiveTo investigate the effectiveness of educational poster on improving secondary school students' knowledge of emergency management of dental trauma.MethodsA cluster randomised controlled trial was conducted. 16 schools with total 671 secondary students who can read Chinese or English were randomised into intervention (poster, 8 schools, 364 students) and control groups (8 schools, 305 students) at the school level. Baseline knowledge of dental trauma was obtained by a questionnaire. Poster containing information of dental trauma management was displayed in a classroom for 2 weeks in each school in the intervention group whereas in the control group there was no display of such posters. Students of both groups completed the same questionnarie after 2 weeks.ResultsTwo-week display of posters improved the knowledge score by 1.25 (p-value = 0.0407) on average.ConclusionEducational poster on dental trauma management significantly improved the level of knowledge of secondary school students in Hong Kong.Trial RegistrationHKClinicalTrial.com HKCTR-1343ClinicalTrials.gov NCT01809457