The primary aim of this study was to illustrate the prevalence of facial skeletal discrepancy in an Italian sample. Another aim was to
evaluate the effectiveness of the sagittal skeletal discrepancy classification in order to establish a morphologic pattern of growth useful for
diagnosis and prediction of therapeutic results. The authors considered a sample of 732 patients (426 females and 306 males) aged between
6 and 17 years old. Cephalometric parameters were evaluated in order to establish a relationship between sagittal skeletal discrepancy and
the classification of facial rotations (Lavergne and Petrovic). Facial types with neutral mandibular growth direction were the most prevalent,
and were most observed in classes I and II; the latter was more represented than others in our sample. Facial types with posterior mandibular
growth direction were the most prevalent in class III. Sagittal skeletal discrepancy classification is not able to establish a specific facial type
or predict an individual responsiveness to treatment.