The effectiveness of an educational intervention on Nutrition and Infant Oral Health on knowledge level of dental students in first and last year of clinic

low level health worker's knowledge is one of the most important factors influencing on children' oral and nutritional health, in particular, dental caries. The aim of our study was to assess the effect of an educational intervention on knowledge level of dental students in first and last year of clinic at Shahid Beheshti dentistry faculty. In this self-controlled, pre-test post-test study, all (59 individuals) the first and last grade clinical students (term 5 and 12) were participated. The intervention was in the form of a power point presentation and a booklet on role of nutrition and primary care on infant oral health. We used two main guidelines to produce educational intervention and a 39-question questionnaire to assess knowledge. Assessment of students in the form of a questionnaire was completed immediately before and after one (posttest 1) and 7 days (post-test 2). the comparison of knowledge score between pre-test, post-test 1 and post-test 2 was done. There was a significant difference between pre test score (39.36 ± 8.92) and post-test 1 (79.15 ±10.78) (PV<0.001). Difference between pre test score (39.36 ± 8.92) and post-test 2 (75.72 ± 9.94) was significant (PV<0.001). Difference between post-test 1 score (79.15 ±10.78) and post-test 2 (75.72 ± 9.94) was significant, too (PV<0.001). There was no significant correlation between gender and year of dentistry training with pre or post-test scores. dental student's knowledge on infant oral health was not sufficient and a power point presentation and booklet was an effective educational intervention in teaching dental students. It is necessary to examine this intervention in higher levels to be useful in the country.