A dental radiology apparatus includes: a generator (18) emitting X-radiation provided with a collimation device collimating the radiation in an appropriate manner using several forms of collimation slits, at least one radiation sensor (20a, 20b) including a first, a second and a third image acquisition surface which are each positioned opposite an appropriate form of slit in order to use the apparatus in panoramic mode, cone beam tomographic mode and mode determining a trajectory which will be used in panoramic mode respectively. In the third mode a form of slit elongated along a plane P is arranged opposite the third surface corresponding to a part of the second surface along a Z-axis perpendicular to the plane P and the assembly is driven in rotation about an axis parallel to the Z-axis.