Introduction: Research has shown that cons-umption of calcium and iron supplements during pregnancy can prevent some problems in mother and embryo. The aim of this study was to dete-rmine the correlation between consumption of calcium, iron and multivitamin supplements and dental status in post partum mothers. Materials & Method: This research was a cross-sectional analytical-descriptive study with cluster sampling. The study sample included 150 pregn-ant women in their end phase of pregnancy from Shahid Mostafa Khomini and Hazrate Zeinab hospitals in Tehran. The study was completed from November 2010 to April 2011. Data were collected in 24 to 72 hours post partum. Dem-ographic and supplements consumption data were recorded in a prepared checklist. The numbers of decayed, Missed and Filled teeth (DMFT index) were registered in the post partum. To analyze the data, Spearman correlation coefficient and Linear variance statistical tests were used. Findings: The correlation between consumption of iron supplement and DMFT was significant (P<0.001). A direct relationship was found bet-ween the consumption of iron supplement with DMFT (r=-0.33). The correlation between the consumption of calcium supplement and DMFT was significant (P<0.001). An indirect relation-ship was found between the consumption of calci-um supplement with DMFT (r=0.42). The correla-tion between the consumption of multivitamin supplement and DMFT was not significant (P=0.09). There was not a direct relationship bet-ween the consumption of multivitamin supple-ment with DMFT (r=0.18). Discussion & Conclusion: Consumption of calciu-m supplement during pregnancy keeps teeth heal-thy. Therefore consumption of calcium suppleme-nt during pregnancy is recommended for presser-veng mothers’dental health status.