Dental schools often have clinics that allow dental students to gain experience treating patients while providing care at a reduced cost. Experienced, licensed dentists closely supervise the students. Contact your local dental school.
Dental hygiene schools may also offer supervised, low-cost care as part of the training experience for dental hygienists. Contact your local dental hygiene school.
You may also be able to find care at federally-funded health centers, where you pay what you can afford, based on your income. Health centers are in most cities and many rural areas. Locate federally-funded health centers.