Skip to Content


Pronunciation: di'a-ste'ma, -ste'ma-ta


  1. Space between two adjacent teeth in the same dental arch.
  2. Fissure or abnormal opening in any part, especially if congenital.
  3. Cleft or space between the maxillary lateral incisor and canine teeth, into which the lower canine is received when the jaws are closed; abnormal in humans but normal in dogs and many other animals.

[G. diastema, an interval]

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.