[Dental x-ray pictures made by parallel and right-angle technics].

The long cone and its belonging film holder-centralizing system made by the Kentzler-Kaschner Dental GmbH (Ellwangen-Jagst, GFR) is well suitable to the right-angle technique. The system can simply be adapted to a number of X-ray apparatus. These technique decreases the distortion, the magnification and the radiation dose, increases the contrast of the pictures. The pictures are well reproducable.