Columbia Dental Associates (212-865-8467) is associated to Columbia University and offers affordable basic dental care if you have the school health insurance and more 'detailed' care if you have the dental plan. The Morningside Campus Facility is at 1244 Amsterdam Avenue (121st Street), so is close to school.

Check the Aetna site to see what your plan healthcare covers you for and co-pays. One word of caution - they get booked up very quickly, with basic check ups sometimes needing many weeks advance booking!