A dental imaging apparatus for obtaining a radiographic image of an object, the apparatus comprising: a movable mount comprising at least one of a radiation source and a digital imaging sensor; an actuator that is energizable to move the movable mount in a scan pattern about an imaging area; a computer in signal communication with the digital imaging sensor and configured to acquire one or more of two-dimensional images of the digital imaging sensor positioned relative to the radiation source for the scan pattern; and a patient support structure configured to provide a spatial relationship to the scan pattern, wherein the patient support structure comprises a bite block (31, 100, 150) comprising at least one bite plate (102, 103) and wherein the bite block is mountable to the patient support structure in a fixed position, the fixed position of the bite block (31, 100, 150) to provide the spatial relationship to the scan pattern, wherein the spatial relationship is configured to offset the at least one bite plate (102, 103) of the patient support structure to be held between a patient's teeth relative to the antero-posterior plane, and wherein the antero-posterior plane is a vertical plane centered on the patient support structure and oriented in the front-to-rear direction of the patient when the patient is positioned on a patient positioning unit; characterized in that the patient support structure comprises two shafts (33a, 33b) which are fixed on or coupled to the patient support structure and positioned symmetrically with respect to the antero-posterior plane, and wherein the bite block is an asymmetric bite block (31, 100, 150) which comprises a planar element with two positioning holes (101a, 101b) of cylindrical shape, the at least one bite plate (102, 103) having a shape being suitable to fit conveniently the shape of both dental arches and having a plane of symmetry, wherein the asymmetric bite block (31, 100, 150) is mountable to the support structure in two different positions by inserting the two shafts (33a, 33b) inside the positioning holes (101a, 101b) of the asymmetric bite block (31, 100, 150), respectively, and wherein in the two different positions the plane of symmetry of the at least one bite plate (102, 103) is spaced apart from the antero-posterior plane, in different directions. a movable mount comprising at least one of a radiation source and a digital imaging sensor; an actuator that is energizable to move the movable mount in a scan pattern about an imaging area; a computer in signal communication with the digital imaging sensor and configured to acquire one or more of two-dimensional images of the digital imaging sensor positioned relative to the radiation source for the scan pattern; and a patient support structure configured to provide a spatial relationship to the scan pattern, wherein the patient support structure comprises a bite block (31, 100, 150) comprising at least one bite plate (102, 103) and wherein the bite block is mountable to the patient support structure in a fixed position, the fixed position of the bite block (31, 100, 150) to provide the spatial relationship to the scan pattern, wherein the spatial relationship is configured to offset the at least one bite plate (102, 103) of the patient support structure to be held between a patient's teeth relative to the antero-posterior plane, and wherein the antero-posterior plane is a vertical plane centered on the patient support structure and oriented in the front-to-rear direction of the patient when the patient is positioned on a patient positioning unit; wherein the patient support structure comprises a bite block (31, 100, 150) comprising at least one bite plate (102, 103) and wherein the bite block is mountable to the patient support structure in a fixed position, the fixed position of the bite block (31, 100, 150) to provide the spatial relationship to the scan pattern, wherein the spatial relationship is configured to offset the at least one bite plate (102, 103) of the patient support structure to be held between a patient's teeth relative to the antero-posterior plane, and wherein the antero-posterior plane is a vertical plane centered on the patient support structure and oriented in the front-to-rear direction of the patient when the patient is positioned on a patient positioning unit; characterized in that the patient support structure comprises two shafts (33a, 33b) which are fixed on or coupled to the patient support structure and positioned symmetrically with respect to the antero-posterior plane, and wherein the bite block is an asymmetric bite block (31, 100, 150) which comprises a planar element with two positioning holes (101a, 101b) of cylindrical shape, the at least one bite plate (102, 103) having a shape being suitable to fit conveniently the shape of both dental arches and having a plane of symmetry, wherein the asymmetric bite block (31, 100, 150) is mountable to the support structure in two different positions by inserting the two shafts (33a, 33b) inside the positioning holes (101a, 101b) of the asymmetric bite block (31, 100, 150), respectively, and wherein in the two different positions the plane of symmetry of the at least one bite plate (102, 103) is spaced apart from the antero-posterior plane, in different directions.