in response to So Sad in Missouri...Not sure if you are still looking but these links may help...
http://www.modental.org/mx/hm.asp?id=uninsured
As long as you qualify for a program they can help you!
In all my research the site that helped me the most was the Oral Health Network of MO. They give listings of dentists that will work with uninsured and under insured
http://www.ohnm.org/(S(foj24o45zb1fg055dpv2ie55))/default.aspx
in response to chunky chunk...Try this program it seems you would be a good fit...http://www.modental.org/mx/hm.asp?id=dds
Donated Dental Services (DDS) is a collaborative program in which the dental profession reaches out to individuals with special needs.