Disclosed herein is a method for creating a 3D dental X-ray image of a jaw region of a patient from a plurality of projection exposures of an exposure volume having a cylindrical core volume with a flat base area, generated during a circulation of an X-ray emitter and an X-ray detector about the head of the patient. The patient may be positioned relative to the core volume so that the jaw region is located within the core volume, and where a bottom edge of the lower jaw of the patient and the base area of the core volume are aligned at least approximately parallel.
