Since the trial began in Powys, thousands of people have already been added to the list and will be allocated an NHS dentist as appointments become available.
Ers i'r cynllun treialu ddechrau ym Mhowys, mae miloedd o bobl eisoes wedi cael eu hychwanegu at y rhestr a byddan nhw'n cael eu dyrannu i ddeintyddion y GIG fel y daw apwyntiadau ar gael.