Purpose: The AAP and the AAPD recommend that starting at 1 year of age, children have a preventative dental visit every 6 months. Children with various chronic medical or developmental conditions are at increased risk for oral health problems and may have greater difficulty with access to oral healthcare. The purpose of this study was to examine, in a large nationally representative sample, the likelihood that children with chronic conditions have had a preventative dental visit within the past 12 months, compared with the general population. Methods: Secondary analysis of the 2016-2017 National Survey of Children's Health (NSCH) for children ages 1-17 years was completed using logistic regressions with "receiving preventative dental care in the last 12 months" as the response variable for each chronic condition in the survey. The reference group were those without the condition. Adjusted Odds Ratios (aOR), P values, and Risk Differences (RD) for these associations were computed, adjusting for dental complaints within the past 12 months, age, sex, race/ethnicity, household income, insurance status, and highest education of adult in household. Notably, NSCH data for Frequent Severe Headaches, Tourette syndrome, Behavioral/Conduct Problems, Developmental Delay, Intellectual Disability (ID), Learning Disability, Autism Spectrum Disorder (ASD), Anxiety, Depression, and Other Mental Health Condition was only available for children ages 3 – 17, so statistical analysis was done based on available ages. Results: For the 11 medical conditions and 3 mental health conditions examined, none of the affected children were less likely to receive preventative dental care. Of the 10 developmental conditions examined, children with ID and children with ASD were less likely to receive preventative dental care. Overall, after adjusting for socio-demographics and recent dental complaints, children with ID were less likely (RD -15.03%, aOR 0.41, P<0.001) and children with ASD were less likely (RD -8.01%, aOR 0.59, P=0.011) to have received preventative dental health care within the past 12 months. Conclusion: Dentists and dental hygienists should be providing preventative care to all children in accordance with approved guidelines. Of the 24 chronic conditions examined, children with ID and/or ASD were less likely to have received preventive oral healthcare within the past 12 months. Children with these diagnoses have higher rates of behavioral, intellectual, and/or functional limitations, which may impede sufficient daily oral hygiene at home and thus place them at increased risk for dental caries and periodontal disease. Therefore, it is especially important to give regular adequate in-office dental attention to children with ID and ASD.