Source : Webster's Revised Unabridged Dictionary (1913)

Odontology \O`don*tol"o*gy\, n. [Odonto- + -logy: cf.F.
   odontologie.]
   The science which treats of the teeth, their structure and
   development.

Source : WordNet®

odontology
     n : the branch of medicine dealing with the anatomy and
         development and diseases of the teeth [syn: {dentistry},
         {dental medicine}]