Objectives: This study examined the association between unmet long-term care needs and dental care among community-dwelling elderly and explored sex differences using data from the 2023 National Survey of Older Koreans. Methods: Data from 9,951 individuals aged ≥65 years were analyzed. Complex sample chi-square tests and logistic regression analyses were conducted to account for the complex survey design. Demographic characteristics, socioeconomic factors, and health and functional status variables were sequentially adjusted for. Results: The prevalence of unmet dental care needs was high among elderly with disadvantaged sociodemographic characteristics, limitations in activities of daily living and instrumental activities of daily living, lower cognitive function, and multiple chronic diseases. Elderly with unmet long-term care needs were more likely to experience unmet dental care than those with met care needs; this association remained significant after full adjustment. In the fully adjusted model, older female adults had a lower likelihood of receiving unmet dental care needs than their male counterparts. Conclusions: Unmet long-term care needs were significantly associated with unmet dental care needs among elderly, with sex differences observed. An integrated approach linking long-term care and healthcare may improve access to dental care, particularly for care-vulnerable elderly.