Australasian Orthodontic Journal (Oct 1996)

A Genetic Aetiology for Some Common Dental Anomalies: A Pilot Twin Study

  • Kotsomitis Nick,
  • Dunne Michael P.,
  • Freer Terrence J.

DOI
https://doi.org/10.2478/aoj-1996-0018
Journal volume & issue
Vol. 14, no. 3
pp. 172 – 178

Abstract

Read online

This pilot study investigated the aetiology of various dental anomalies. Twin-pair correlations were obtained for the total number of missing, ectopic, malformed and rotated permanent teeth which were scored from panoramic radiographs of 59 monozygotic (identical) and 42 dizygotic (non-identical) twin-pairs. All monozygotic (MZ) twin correlations were greater than the dizygotic (DZ) twin correlations, suggesting a significant hereditary aetiology. A familial history of such common dental anomalies could become a valuable asset in treatment planning.

Keywords