The invention concerns a device for obtaining an occlusal registration of a patient; a method for obtaining an occlusal registration of a patient; and a method for dental procedure planning, such as dental implant planning. Radiopaque markers are advantageously applied to improve the devices, methods, and outcomes related to dental procedures.

Multiposition collimation devices and x-ray imaging systems, which include the multiposition collimation devices, are provided. The multiposition collimation device includes a collimator housing and a collimator plate constructed to at least partially block the passage of x-rays. The collimator plate is movable relative to the collimator housing to a first position, corresponding to a first x-ray detector size, and a second position, corresponding to a second x-ray detector size.

A method of orthodontic treatment planning for a patient includes receiving three-dimensional intraoral surface scan data of a dentition of the patient, receiving three-dimensional volumetric scan data of a dentition of the patient, and determining, for use in planning an orthodontic treatment, a mandibular rotation axis and a glenoid fossae of the temporal bone based on a mandibular condyle of the patient using the scan data.

A back illuminated sensor is included as a collector component of a detector for use in intraoral and extraoral 2D and 3D dental radiography, digital tomosynthesis, photon-counting computed tomography, positron emission tomography (PET), and single-photon emission computed tomography (SPECT). The disclosed imaging method includes one or more intraoral or extraoral emitters for emitting a low-dose gamma ray or x-ray beam through an examination area; and one or more intraoral or extraoral detectors for receiving the beam, each detector including a back illuminated sensor. Within the detector, the beam is converted into light and then focused and collected at a photocathode layer without passing through the wiring layer of the back illuminated sensor.

Disclosed are an oral fixation device for radiation therapy and an oral fixation method in treatment of a lip cancer. The oral fixation device for radiation therapy includes a first spacer including a first insert inserted between a first lip portion and a first gum portion, and a tooth support coupled to the first spacer at a side of the first spacer disposed inwardly of an oral cavity, wherein teeth or gums of a patient is supported on the tooth support, wherein a first spacer has a specific thickness to maintain a specific spacing between the first lip portion and the first gum portion, wherein the first lip portion includes a treatment target portion to be subjected to the radiation therapy.

Teeth are screened for periodontal disease using digitized images manipulated and annotated on a processor. A digitized radiographic image of a tooth shows locations of a bone boundary and a cemento-enamel junction (CEJ) of the tooth. The digitized radiographic image is marked on the processor with a location on the bone boundary and with a pair of CEJ points at opposite ends of the CEJ visible in the radiograph. A ratio between (a) a distance between the bone boundary location and the adjacent CEJ point as numerator and (b) a distance between the CEJ points as denominator is calculated on the processor and compared with a threshold ratio-value for a corresponding tooth from a database accessible by the processor. A calculated ratio-value which is greater than the database threshold ratio-value is indicative of periodontal disease in the tooth. The probability of the correct diagnostic decision is determined by the relative magnitude of the calculated ratio-value and the threshold ratio-value.

A system and method for automated localization, enumeration, and diagnoses of a tooth/condition. The system detects a condition for at least one defined localized and enumerated tooth structure within a cropped image from a full mouth series based on any one of a pixel-level prediction, wherein said condition is detected by at least one of detecting or segmenting a condition on at least one of the enumerated tooth structures within the cropped image by a 2-D R-CNN.

A support rig for a medical instrument can hold a medical instrument that is inserted into a patient in a fixed position and orientation relative to patient, so that the position and orientation of the medical instrument is not affected by the breathing or other motion of the patient. The support rig and medical instrument can be radiolucent and non-metallic, so that an image can be taken of the patient while the medical instrument is inserted in the patent and held by the support rig. The radiolucent support rig and medical instrument can allow for imaging, including x-ray, CT, and/or MRI, to occur simultaneously during the surgery. Surgical outcomes can be improved by using imaging to provide information about a tumor and/or anatomical structures during surgery.

Disclosed herein is a preliminary guide including an impression resin and a guide tray. The guide tray includes an impression resin accommodation part, a jig fastening part, a protective cover part, and a grip part.

Disclosed are methods and digital tools for deriving tooth condition information for a patient’s teeth, for populating a digital dental chart with derived tooth condition information, and for generating an electronic data record containing such information.