Where can a person go and find low cost dental services in North Texas?

I have a sibling who has no dental/health insurance (she works part time and goes to college), and she believes she has a couple of abscessed wisdom teeth. Does anyone know of a local dental professional or local health services (Denton or Collin County) which would provide low-cost (and/or payment plan) for dental care?
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You are asking the world when you should be asking around your town. Start by phoning your local dental school. They are always seeking patients for their students to work with. Ask at your local church. Call the county health services department. In the USA, counties typically manage health care services. And, of course, ask at the college! Students are always looking for low-cost health care (and not just contraceptives!), so the school will know who provides service in the community.
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