Introduction: Oral health is an essential component of overall health for all adolescences. The improvement of dental health requires proper training methods to improve knowledge, attitudes, and practices in relation to its population. The aim of this study was to compare the effect of two methods (by the electronic education method and by dental training models) in improving adolescences’ knowledge, attitude, practice of dental hygiene, and decrease of dental plaque, and gingival index.Methods: This study was a quasi-experimental research performed on 120 primary school students of Tehran. The subjects were randomly selected and were divided to two equal groups (each group n=60). The knowledge, attitude, practice, and dental plaque and gingival index of the students were measured by self-report questionnaires, and examination was done by the pre-test and post-test method. The data was analyzed using the SPSS version 21 software and the statistical tests were Phishers exact, Chi-square, and Wilcaxone.Results: There was no significant difference between the 2 groups in knowledge, attitude, and practice before the intervention (P>0.05). In the electronic education and dental training model groups, knowledge, attitude, and practice were improved after both interventions, however, the electronic education approach had a more significant effect on improving knowledge, attitude, and practice of oral health and decreasing dental plaque and gingival index (P<0.001).Conclusions: This study showed that training is effective in promoting oral health behavior, while the type of training has an important role in the extent of improvement in this behavior. Thus, electronic education at all stages of educational methods, were more effective than dental training models. Therefore, electronic dental training to promote oral health is recommended as an effective method.