title: Influence of Education on Oro-dental Knowledge among School Hygiene Instructors.
abstract: OBJECTIVE
  Recent progresses in preventive dentistry and their correct application in many developed coun-tries have remarkably decreased the rate of oro-dental diseases in children and teenagers, while the rate of oro-dental diseases is on the rise among the children in developing countries. The aim of this study was to evaluate the impact of educating school health care instructors by measuring their level of oral health knowledge and their opinions about the impact of oral health and preventive dentistry.
  
  
  METHODS
  This was a cross-sectional descriptive-analytical study. Questionnaires were administered before and after an educational lecture to school health care instructors in Hamadan, Iran. Data were analyzed using paired t-test.
  
  
  RESULTS
  In this study, 31 school health care instructors took part. The percentage of instructors in poor knowledge level was 22.6% before the educational lecture (education), which decreased to 0 percent after the education (P < 0.05). The percentage of instructors with good knowledge level was 3.2%, which increased to 80.6% after the education (P < 0.05).
  
  
  CONCLUSIONS
  Close cooperation between universities and the Ministry of Health and Medical Education will lead to im-provements in the level of knowledge and awareness of school health care instructors.
authors.affiliation: Assistant Professor, Department of Oral Pathology, Faculty of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Soussan
authors.initials: S
authors.lastname: Irani
authors.forename: Marjane
authors.initials: M
authors.lastname: Meschi
authors.forename: Azizollah
authors.initials: A
authors.lastname: Goodarzi