Patent ID: 7945016

Claim:
Dental radiology apparatus comprising: a generator ( 18 ) provided with a window ( 18 b ) emitting X-radiation and a collimation device positioned in front of said window in order to collimate the radiation in a suitable manner using several forms of collimation slits, at least one sensor ( 20 a , 20 b ) comprising a first image acquisition surface elongated along a Z-axis perpendicular to a plane P and being used in a first position of the apparatus to produce a panoramic image of a jaw placed between the generator and the first image acquisition surface, the panoramic image being produced from the X-radiation collimated by a first form of collimation slit ( 22 a ) elongated along the Z-axis and received by the first sensor image acquisition surface and by displacement of the generator and of said first surface along a given trajectory in the plane P combined with a rotation about an axis parallel to the Z-axis, the said at least one sensor comprising a second image acquisition surface used in cone beam tomographic mode, in a second position of the apparatus, to produce a three-dimensional model of only a part of the jaw from the X-radiation collimated by a second form of collimation slit ( 22 b ) and received by the second image acquisition surface and by displacement of the generator and of said second surface in rotation about an axis parallel to the Z-axis, the second form of collimation slit having dimensions matched to those of the second image acquisition surface, characterized in that the apparatus is able to occupy a third position of use and to this end comprises means of positioning, in front of the window emitting X-radiation, a third form of collimation slit ( 22 c ) elongated in a direction parallel to the plane P and arranged opposite a third image acquisition surface corresponding to a part of the second surface along the Z-axis in order to cooperate with the third image acquisition surface, the longitudinal dimension of the slit in the direction parallel to the plane P being matched to the dimension of the second image acquisition surface in this same direction.