Objectives: The purpose of this study was to estimate the financial cost required for dental healthcare coverage by integrating North Korea’s free medical care system and South Korea’s health insurance system;assuming the unification of North and South Korea. Methods: North Korea’s health insurance and medical benefit finances were estimated based onthe benefit content;benefit target;benefit level;dental service utilization rate;and dental care costgrowth rate. Results: The results of the financial estimate assuming an average annual growth rate of dentalmedical expenses of 5% were as follows. Assuming that the proportion of health insurance recipients was 0% and the proportion of medical benefit recipients was 100%;health insurance was estimated at 0 won and government spending on medical benefits was estimated at KRW 771.9 billionin 2022. Assuming that the proportion of health insurance beneficiaries was 97% and the proportionof medical benefit recipients was 3%;health insurance was estimated at KRW 8,241.3 billion andgovernment expenditure on medical benefits was estimated at KRW 510.9 billion in 2052. In addition;the financial estimation results assuming an average annual growth rate of dental medicalexpenses of 10% were as follows. Assuming that the proportion of health insurance recipients was0% and the proportion of medical benefit recipients was 100%;health insurance was estimated at0 won and government spending on medical benefits was estimated at KRW 808.7 billion in 2022. Assuming that the rate of health insurance beneficiaries was 97% and the rate of medical benefitrecipients was 3%;health insurance was estimated at KRW 34.858 trillion and government spending on medical benefits was estimated at KRW 2.1608 trillion in 2052. Conclusions: If the rate of increase in dental medical expenditure is not controlled;it is possiblethat very high dental medical expenditure will become a significant social burden for both North andSouth Korea. A strategy needs to be developed to minimize the financial impact after unificationand promote efficient integration of the dental healthcare system.