Objectives : The purpose of the study is to provide basic data for oral health promotion in national basic livelihood security. Methods : The data were extracted from the 4th National Health and Nutrition Survey (2007-2009) in Korea. The data were analyzed using SPSS 18.0. to $x^2$-test and CSGLM. Results : 1. The subjects were not able to receive dental treatment because of the financial difficulty. 2. The infuencing factors of DMFT include gender (p<0.05), type of health insurance (p<0.05), membership for private health insurance (p<0.05), frequency of toothbrushing (p<0.05), use of oral hygiene products (p<0.01), smoking (p<0.05), drinking (p<0.05). The influencing factors of CPI include gender (p<0.01) and smoking (p<0.05). The influencing factors of fixed bridge include age (p<0.05), income (p<0.05) and use of accessory oral hygiene products (p<0.05). The influencing factors of fixed bridge include age (p<0.001), income (p<0.01), education (p<0.001), type of health insurance (p<0.001), membership for private health insurance (p<0.001), frequency of toothbrushing (p<0.01), use of oral hygiene products (p<0.01), and drinking (p<0.05). Conclusions : It is necessary to provide oral health care and health promotion to the recipients of National basic livelihood security. The government must give them better quality of dental health care in the near future.