[Cephalometric analysis of the mid-facial region in Central Europeans]

In the evaluation of 101 cephalometric x-rays, the measuring point infraorbitale Io is established for the cephalometric analysis of the middle third of the face. Being the most ventral point in the infraorbital region Io can easily be identified on radiograms. As cephalometric parameters of the middle third of the face, the angles SNaIo, IoNaA as well as the distance Io-NaA are chosen. The most favorable measurement seems to be the angle SNaIo. There are correlations between the newly introduced angle SNaIo and SNaA/SNaB. When combining the two angles in pairs, hypoplasia of the middle third of the face can be cephalometrically differentiated into infraorbital, maxillary and total hypoplasia. The practical significance of this method for surgical corrections of deformations of the middle third of the face is pointed out.