Commissural lip pits in Israeli Jews of different ethnic origin.

The prevalence of commissural lip pits in a group of 2462 Israeli Jews was determined, and a relation of commissural lip pits to ethnic background was noted. Results showed the presence of commissural lip pits in 17.4% of the entire sample; 9.7% were unilateral and 7.7% were bilaterally located. The Ashkenazi group showed a significant higher prevalence of commissural lip pits (19.4%) when compared to the prevalence in the Sephardic group (14.1%) and the Eastern group (21.1%).