[Variations of sagittal skeletal relationships in cases with normal occlusion].

Cephalometric radiographs of a sample of 92 cases with normal occlusion were used to study variations in the sagittal jaw relationship. The Schwarz's and Steiner's cephalometric methods of analysis were employed. Results obtained by the Schwarz's method showed that 58.7% of cases had Class I, 16.3% Class II and 25% Class III skeletal relationship. On the other hand, the Steiner's method demonstrated Class I skeletal relationship in 59.8% cases, Class II skeletal relationship in 8.7% of cases and Class III skeletal relationship in 31.5% of cases. Both cephalometric methods indicated Class I skeletal relationship in 39.1% of all cases investigated. In addition, both methods showed the same skeletal relationship (Class I, Class II or Class III) in 58.6% of all cases investigated.