Systems and methods for generating a 3D model of a dentition are disclosed herein. A method includes generating a first 3D model of a dentition including a plurality of model teeth. The method includes receiving at least one digital representation comprising patient teeth. The method includes determining a virtual camera parameter. The virtual camera parameter corresponds with a camera used to capture the digital representation. The method includes comparing, based on the virtual camera parameter, a first position of a model tooth with a position of a corresponding patient tooth of the digital representation. The method includes moving the model tooth from the first position to a second position. The second position is based on the position of the corresponding patient tooth. The method includes generating a second 3D model comprising the model tooth of the first 3D model in the second position.

The present disclosure provides methods, devices, systems, and computer-implemented methods for forming and placing attachments for use with dental appliances, and more particularly to the design, manufacture, and use of three-dimensionally printed attachment templates for use with orthodontic devices. Dental attachment templates include a cavity with one or more openings for injecting and bonding attachment material directly on a patient's tooth, which allow accurate placement of the attachments while providing the dental practitioner flexibility during the attachment forming process. Digital dental attachment template model techniques can be used to accurately place the cavity and opening.

The invention relates to a method for calculating a stimulus for the change of shape of a medical aid in order to change the position of the medical aid from an actual position to a final target state. In order to achieve optimized treatment for the patient, a method comprising the following steps is provided: Detecting the actual position of the body part to be corrected after a first correction step in a control unit, Comparing the actual position of the body part to be corrected with a target position that is stored in the control unit, If applicable, detecting, by the control unit, the deviation between the actual position and target position of the body part to be corrected, Calculating with the control unit the stimulus that has to act on the medical aid to perform a second correction step, taking into account the deviation between the actual state and target state of the body part to be corrected, wherein the effect of the stimulus on the medical aid is saved in the control unit.

The invention further relates to a control unit.

A model includes a model main body, an opening defining portion, and a target model portion. A space is formed between the opening defining portion and the target model portion to allow visual recognition of a range present between the opening defining portion and the target model portion. The range includes a reachable range of the distal end of the procedural instrument from the opening defining portion toward the target model portion and a reachable range of the distal end of the procedural instrument from the opening defining portion in a teeth alignment direction and a direction intersecting the teeth alignment direction.

Provided is a method for generating an orthodontic teeth alignment shape for the orthodontic treatment of a patient. According to the present invention, there is provided a method for generating an orthodontic teeth alignment shape, the method including the steps of: acquiring a patient's teeth shape information; extracting specific points of respective teeth within a given range of at least one of the patient's upper and lower jaws, based on the acquired teeth shape information; comparing the patient's arch form produced by connecting the specific points to one another with a plurality of standard arch forms stored in a database; selecting the standard arch form that is most similar to the patient's arch form from the plurality of standard arch forms stored in the database, based on the comparison result; and generating the orthodontic teeth alignment shape based on the selected standard teeth alignment form.

A method of making a transfer apparatus includes providing a physical mockup having a shape that corresponds to a positive shape of a patient's dental arch and a positive shape of one or more appliance analogs including ramps extending in a generally gingival direction from the analog. A transfer tray may be formed over the physical mockup, with the transfer tray representing a negative replica of at least a portion of the mockup. One or more receptacles and related channels are accordingly formed in the ray, each receptacle approximating a least a portion of the shape of an appliance analog and each channel approximating at least a portion of the shape of a ramp. An appliance associated with an appliance analog is placed into a receptacle of the one or more receptacles, and the appliance may be bonded to a tooth surface of the patient's dental arch.

A system includes a partial enclosure configured to hold resin. The system further includes one or more structures configured to at least partially cover the resin. The one or more structures are configured to prevent evaporation of the resin. The system further includes a build platform configured to support an object that is being formed from layers of the resin. A first blade is configured to provide the layers of the resin to form the object on the build platform.

A method for automatic registration of dental image data comprises receiving three-dimensional intraoral surface scan data of a dentition of a patient, receiving three-dimensional volumetric scan data of the dentition, generating a first set of descriptors characterizing tooth crown surfaces of the dentition from the intraoral surface scan data, generating a second set of descriptors characterizing tooth crown surfaces of the dentition from the volumetric scan data, determining a best-fit registration transform based on the first and second sets of descriptors, and aligning the intraoral surface scan data and the volumetric scan data based on the best-fit registration transform.

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 system is directed to repositioning teeth and includes a first three-dimensional image showing an initial position in which a plurality of teeth are unaligned, and a second three-dimensional image shows a final position in which the plurality of teeth are aligned. The system also includes a plurality of structural domes for respective attachment to the plurality of teeth, the plurality of structural domes being customized and formed based on at least one of the first three-dimensional image and the second three-dimensional image. Each chair-side fabricated dome has at least one internal tunnel that is unaligned with an adjacent internal tunnel in the initial position. A continuous wire is inserted through each internal tunnel of the plurality of structural domes and applies a force to the plurality of structural domes such that adjacent internal tunnels are in alignment with each other in the final position.