BACKGROUND Poor dental hygiene has been associated with various perinatal complications in studies done worldwide but few studies in Nepal have explored the knowledge of pregnant ladies regarding dental hygiene. The aim of the study was to know the knowledge and practices of pregnant women regarding oral health in a tertiary care center in Nepal. METHODS A qualitative study was carried out in Nobel Medical College and Teaching Hospital from January 15, 2018 to June 15, 2018 after approval from the Institutional Review Committee of Nobel Medical College. Convenience sampling was done. Fifty pregnant women admitted in antenatal ward were interviewed regarding their knowledge of dental care in pregnancy, the common dental problems they faced and the treatment taken. A predesigned proforma was used and results were analyzed using SPSS version 17. RESULTS Twenty two (44%) patients reported dental problems during pregnancy. Bleeding gums was seen in 7 (14%) and toothache in 7 (14%) were commonly reported dental problems. Forty seven (94%) patients acknowledged that routine dental care was needed for health, only 6 (12%) were aware that poor dental health could affect baby weight. Oral health not seen as priority in 24 (48%) was the main barrier to seeking dental care in pregnancy followed by costs of treatment in 18 (36%) and safety concerns in pregnancy in 8 (16%) cases. CONCLUSIONS Though dental problems were a common occurrence in pregnancy, utilization of services was low for the same. The participants reported significant barriers to obtaining dental care including lack of knowledge about the importance of maternal oral health and the treatment costs.