ratio of decayed and filled teeth

ra·ti·o of de·cayed and filled teeth (RDFT),

an index of decayed and filled permanent teeth per person, per full complement of 28 teeth.

ra·ti·o of de·cay·ed and fill·ed teeth

(RDFT) (rāshē-ō dĕ-kād fild tēth)
Index of such permanent teeth per person, per full complement of 28 teeth.