A method of using AR for dentistry and orthodontics is provided. An image of a dental arch is received, the image having been generated by an image capture device associated with an augmented reality (AR) display. A processing device registers the image to previous image data associated with the dental arch, compares one or more areas of the dental arch from the image to one or more corresponding areas of the dental arch from the previous image data, determines a position of an area of interest on the dental arch based on the comparing, generates a visual overlay comprising an indication of the area of interest, and outputs the visual overlay to the AR display, wherein the visual overlay is superimposed over a view of the dental arch on the AR display at the position of the area of interest.

Methods for manufacturing anatomical healing caps, including forming an anatomical healing cuff body for a given tooth position, the anatomical healing cuff body having a cross-section and an exterior surface so that the anatomical healing cuff body provides substantially custom filling of at least an emergence portion of a void where a natural tooth once emerged from the void or where a tooth would have emerged from a void of the given tooth position, and forming both lateral buccal and lingual handle extensions extending from the anatomical healing cuff body so that the manufactured anatomical healing cap includes a laterally extending buccal handle extension and an oppositely disposed laterally extending lingual handle extension, the buccal and lingual handle extensions being integrally formed with the healing cuff body. The healing caps can be formed using a casting jig, by machining, by 3D printing, or other suitable methods.

A method for diagnosis and evaluation of tooth decay comprises: locating in an x-ray image the contour of the dento-enamel junction (DEJ); measuring optical density along contours substantially parallel to and on either side of the DEJ contour; and calculating at least one decay value from the measured optical densities. A method for diagnosis and evaluation of periodontal disease comprises: measuring in an x-ray image a bone depth (BD) relative to the position of the cemento-enamel junctions (CEJs) of adjacent teeth; measuring bone density along a contour between the adjacent teeth; and calculating a crestal density (CD) value from the measured bone density. Calibration standards may be employed for facilitating calculation of the values. A dental digital x-ray imaging calibration method for at least partly correcting for variations of the optical densities of images acquired from the dental digital x-ray imaging system.

Aligning an X-ray source in an X-ray imaging system. The system includes a column, an upper shelf coupled to the column through a pivoting joint, a rotating part rotatably coupled to the upper shelf, the rotating part comprising a first X-ray source, a laser, and an X-ray imaging detector. The system also includes a patient support attached to the column with a first arm, and includes a pair of adjustable ear rods or other patient contact. The system is configured to generate a laser beam from the laser, project the laser beam to a fixed location on the X-ray imaging detector, the fixed location associated with a Frankfurt plane of the patient, and adjust the patient support to have the patient contact aligned with the laser beam.

A balance mechanism comprises a working device, a connecting arm assembly having a variable length, a torque-balancing assembly, a weighting member, and a connecting member. The connecting arm assembly couples to the working device. The connecting arm assembly is pivoted to the torque-balancing assembly by a pivot. The weighting member couples to the torque-balancing assembly. The connecting member connects the connecting arm assembly and the torque-balancing assembly. As the distance between the working device and the pivot changes, the distance between the weighting member and the pivot changes accordingly, so that a dynamic balance can be achieved.

A system for dental implant restoration is provided. It includes universal aligning adaptors and prosthetic components having co-operable indices, which together form a translational, integrating system which aligns, synchronizes, and references the prosthetic components about an implant's central axis of rotation. Rotation of an adaptor about a prosthetic component, with its reference point becoming aligned to a predetermined reference point on the prosthetic component, followed by the rotation of the adaptor/prosthetic component assembly about the implant, situates the prosthetic component in a predetermined position such that all other prosthetic components become synchronized to the adaptor's reference point. The prosthetic component is mechanical for clinical or lab bench use, or is virtual for restoration design in a software program, prior to milling prosthetic abutments or devices. Abutments, healing caps and screw access holes are realigned to preferred positions and synchronized with minimal deviation from the ideal direction.

Certain exemplary method and/or apparatus embodiments herein can include -a support frame, -a movable gantry that supports an x-ray source and an x-ray sensor in correspondence with the x-ray source and that is movable relative to the support frame, -a patient positioning accessory support member configured to support a patient positioning accessory of a specific type that is adapted to be used in the apparatus for conducting a specific examination on a patient, where the patient positioning accessory comprises at least one passive identification element that identifies the specific type of the patient positioning accessory, and the apparatus further comprises an active identification system that is configured to cooperate with the at least one passive identification element of the patient positioning accessory in order to identify the specific type of the patient positioning accessory.

Disclosed is an X-ray CT radiographing apparatus capable of selecting various FOVs, simplifying radiographing motion, and reducing X-ray exposure dose, and a method thereof. An X-ray CT radiographing apparatus according to the present invention includes a rotation supporter rotating by a rotation driver, a generating unit including an X-ray generator emitting X-rays and a collimator so as to radiate a collimated X-ray beam, a sensing unit including a small width X-ray sensor moving in a tangential direction of a rotation trajectory, and a controller controlling operations of the rotation driver, the generating unit, and the sensing unit when performing X-ray radiographing, and configuring movement trajectories of an X-ray beam for radiographing FOVs different from each other to be the same, and controlling the generating unit to turn OFF the X-ray beam in sections different from each other of the movement trajectory of the X-ray beam according to the FOV.

A medical image processing device is disclosed. The disclosed medical image processing device may include: an input interface through which a depth adjusting command is input from a user; an image processor and controller generating a two-dimensional reconstruction image by overlapping a part or all of CT image data in a view direction, and changing a contrast of at least a part of the two-dimensional reconstruction image according to the depth adjusting command; and a display part displaying the two-dimensional reconstruction image.

A method for determining the position and/or orientation of at least one sensor system relative to the base structure of a scanning system during scanning of an object includes obtaining one or more tracking images using one or more cameras, where the cameras are in a fixed position with respect to the sensor system; and determining from the one or more tracking images the position and/or orientation of the sensor system relative to the base structure at a given time.