Background: Social inequities are considered to affect healthcare utilization, whereas less is known about the factors associated with refraining from seeking dental care. This study aimed to investigate whether people with no social support, long-term illness, caregiver burden and low socioeconomic status (SES) refrained from seeking dental care in higher proportion than the general Swedish population.; Methods: This study used cross-sectional questionnaire data from repeated nationwide health surveys during 2004-2013 of a total of 90 845 people. The questionnaire included questions on demographic characteristics, social support, long-term illness, caregiving burden, SES and dental care-seeking behaviour. Descriptive statistics, chi-square tests, correlation analyses and logistic regressions were used to investigate associations between independent variables and dental care-seeking behaviour.; Results: In the total sample, 15.1% of respondents reported refraining from seeking dental care. Having no emotional social support or having no instrumental social support was separately associated with reporting refraining from seeking dental care in adjusted multivariate models (odds ratio [OR] 1.26, 95% confidence interval [CI] 1.18-1.34 and OR: 1.89, 95% CI: 1.67-2.13, respectively). Having a long-term illness was associated with refraining from seeking dental care in adjusted models (adjusted OR: 1.43, 95% CI: 1.35-1.51). Furthermore, being an informal caregiver was associated with refraining from seeking dental care (adjusted OR: 1.15, 95% CI: 1.07-1.23). Low SES was associated with higher refraining from seeking dental care; the strongest association was with having financial problems (adjusted OR: 3.57, 95% CI: 3.19-4.00). Interaction effects were found between education level and SES, and between social support and long-term illness, and the outcome.; Conclusions: The findings in this study imply that having no social support, having long-term illness, being informal caregiver or having financial problems are factors associated with reporting refraining from seeking dental care, on a population basis.