Objectives: This study examined the oral health treatment experiences and reasons for unmet dental care needs among patients with rheumatoid arthritis (RA) using data from the Korea Health Panel Survey. Methods: Data from 34,076 adults who responded to the unmet dental care needs questionnaire were analyzed, including 427 patients with RA and 33,649 without RA. Among the 13,423 respondents of the oral disease and treatment experience questionnaire, 171 had RA. Unmet dental care needs and their underlying reasons were assessed using self-reported items. Group differences were examined using the Pearson chi-square test, and logistic regression analyses were conducted. Results: Patients with RA had significantly higher odds of difficulty going out due to health conditions (adjusted odds ratio=3.672), loss of income from inability to work (adjusted odds ratio=4.550), and lack of time (adjusted odds ratio=4.296) compared to the control group (p<0.05). The direct medical costs were not significant. Conclusions: Physical limitations and time constraints, rather than direct costs, appear to be the major barriers to dental care access among individuals with RA. Targeted policy interventions, such as home-visit dental services and interdisciplinary care systems, may improve accessibility.