Periodontal diseased during pregnancy are associated with many unpleasant prenatal consequences including preeclampsia, preterm labor, and low birth weight (LBW). Treatment of such diseases and observance of oral and dental hygiene may to some large extent prevent such consequences. Unfortunately previous studies have shown that pregnant women have very little knowledge of oral and dental health implications. Given the fact that pregnancy my be a unique opportunity to initiate correct hygienic behaviors in young women, this paper has focused on studying the effects of oral and dental health education during pregnancy.

In this single blind clinical trial study,140 pregnant women receiving care from Khaje Rabi Regional Health Center in Mashhad city who were members of a community based multi-center were chosen by systematic clustering methods and randomly allocated into test and control groups. After intervention, two questionnaires were completed for demographic and pregnancy details of the participants. Knowledge, health belief and health behavior were assessed before intervention. The test group had two educational sessions lasting 1 hour, focused on oral and dental health and especially on oral and dental health during pregnancy. women in the control group received no education. Knowledge, health belief and health behavior were assessed immediately after and one month after intervention of all participants. Analysis of data was done using SPSS, t-test and chi-square tests.

In this clinical trial study,140 pregnant women receiving care from Khaje Rabi Regional Health Center in Mashhad city who were members of a community based multi-center were chosen by systematic clustering methods and randomly allocated into test and control groups. After intervention, two questionnaires were completed for demographic and pregnancy details of the participants. Knowledge, health belief and health behavior were assessed before intervention. The test group had two educational sessions lasting 1 hour, focused on oral and dental health and especially on oral and dental health during pregnancy. women in the control group received no education. Knowledge, health belief and health behavior were assessed immediately after and one month after intervention of all participants. Analysis of data was done using SPSS, t-test and chi-square tests.

Inclusion Criteria:

• Spoke Persian
• minimum education margin of primary school studies
• Gestational age between 12 and 32 weeks
• lacked any type of physical or mental problem
• lacked of any disease that could prevent from taking dental care

Exclusion Criteria:

• who did not attend the education sessions
• failed to complete the questionnaires
• receive any special education between post-test and stability test