Keeping it simple: i got bad teeth: looking for dentist that does pro bono work n san marcos or austin,tx help

i want a new whole mouth, but cannot afford it.. i've heard that some dentist does pro bono work.. it would be nice for a dentist to understand why i need a whole new mouth ( bad teeths) and it would boost my morale and self esteem looking for such dentist in san marcos,tx or austin tx..so anyone got any suggestion..?