The aim of the study was to investigate the effects of different patient information modules on self performed oral hygiene methods using manual and powered tooth brushes in a group of school children. The study included 200 (two hundred) school children in the age group of 8-11 years, belonging to same socioeconomic strata and were randomly divided into four main groups: Group I, those who did not attend any program. Group II, those who were supervised by their parents. Group III, those who were supervised by school teachers. Group IV, those who were supervised by Dentists.Each main group...