Source : Webster's Revised Unabridged Dictionary (1913)

Dental \Den"tal\, a. [L. dens, dentis, tooth: cf. F. dental. See
   {Tooth}.]
   1. Of or pertaining to the teeth or to dentistry; as, dental
      surgery.

   2. (Phon.) Formed by the aid of the teeth; -- said of certain
      articulations and the letters representing them; as, d t
      are dental letters.

   {Dental formula} (Zo["o]l.), a brief notation used by
      zo["o]logists to denote the number and kind of teeth of a
      mammal.

   {Dental surgeon}, a dentist.

Dental \Den"tal\, n. [Cf. F. dentale. See {Dental}, a.]
   1. An articulation or letter formed by the aid of the teeth.

   2. (Zo["o]l.) A marine mollusk of the genus {Dentalium}, with
      a curved conical shell resembling a tooth. See
      {Dentalium}.

Source : WordNet®

dental
     adj 1: of or relating to the teeth; "dental floss"
     2: of or relating to dentistry; "dental student"