Maximal inter-incisal distance in healthy school children in Switzerland

Results A total of 20’709 measurements (10’058 girls, 10’651 boys) were available for the analysis. The median age (range) was 9.92 years (3.25-18.33) for girls and 10.00 years (2.8318.67) for boys. The mean inter-incisal distance (range) was 45 mm (25-69) for girls and 45 mm (25-70) for boys. Age related percentiles were created for girls and boys separately, showing the 3, 10, 25, 50, 75, 90, and 97 percentile from 3 through 18 years of age. Conclusion In these 20’709 unselected school children the interincisal distance increased with age but showed a wide range within children of the same age. These percentiles may be a helpful tool in assessing the range of TMJ movement in children with JIA.