Materials and Methods: The study reviewed 1521 panoramic radiographs of Saudi and non-Saudi subjects who attended RCsDP clinic from November 2009 to November 2010. The data were analyzed using the Statistical Package for Social Sciences, utilizing Chi-square.

Results: Eighteen (1.2%) patients were found to have NSST, comprising twelve males (66.7%), and six females (33.3%). The most common supernumerary teeth (ST) were the pre-molars six  cases  (33.3%),   followed  by  the mesiodens,   fve  cases  (27.8%).  The  canines  and  distomolars  three cases (16.6%) each respectively, while the least were the lateral incisors and paramolars of the two cases (11.1%) each.

  Conclusion: Consanguinity appeared to have a role in the development of hyperdontia in Saudi population because 13 cases (72.2%) out of 18 cases had consanguineous parents,  while all patients  having consanguineous parents had eumorphic ST.