Abstract: A three-dimensional (3D) object comprises a plurality of layers representative of an additive manufacturing process, wherein each layer of the plurality of layers approximately has a first thickness. A first layer of the plurality of layers forms at least a portion of a first surface of the 3D object, the first layer comprising a support region and an overcure region, wherein the first layer approximately has the first thickness at the support region and a greater second thickness at the overcure region. A support mark is included at the support region, wherein the support mark is inset from a first surface profile of the 3D object defined by the overcure region.

Abstract: Embodiments include obtaining an input image depicting a body part of a person and processing the input image against a set of semantic landmarks representing landmarks of the body part; obtaining a mesh model for a set of images; generating, from the mesh model and the set of semantic landmarks, a body part mesh of the person, wherein the body part mesh is an approximation of a 3D model for the body part depicted in the input image; obtaining a target body part mesh data structure, distinct from the body part mesh; and generating a modified view image of the body part, modified to reflect differences between the target body part mesh data structure and the body part mesh while retaining at least some texture of the body part from the input image.

Abstract: Removable barrier devices for covering an intraoral scanner. The barrier device includes a cover that is adapted to fit over a probe of the scanner. The cover includes a distal portion having walls defining an internal cavity for accommodating a distal end of the probe and formed of a first material, wherein at least one of the walls includes at least one window for allowing transmission of an optical signal between the probe and an external environment. The cover also includes a proximal portion coupled to the distal portion. The barrier device also includes a flexible sleeve adapted to cover a handle of the scanner, the flexible sleeve coupled to the proximal portion of the cover at an interface region configured to prevent fluid from passing through the barrier device between the cover and the sleeve.

Abstract: Provided herein are devices and methods generating synthetic views of a subject's teeth. Methods and processes are provided to image the subject's teeth with a dental scan. Methods and processes are also provided to automatically 3D render the subject's teeth with the scan images. Methods and apparatuses are also provided to generate simulated synthetic views of the subject's dentition from various perspectives.

Abstract: A method comprises receiving, by a processing device, clinical data of a first state of one or more dental arches of a patient. The method further comprises determining, by the processing device, one or more stages of an orthodontic treatment plan for correcting the one or more dental arches based on processing of the clinical data. Determining a stage of the orthodontic treatment plan comprises determining one or more actions to be performed with respect to the one or more dental arches and determining a target state of the one or more dental arches that is predicted to result at least in part from the one or more actions.

Abstract: Systems, methods, and devices for post-processing additively manufactured objects are disclosed herein. In some embodiments, a method includes receiving a plurality of additively manufactured objects having excess material thereon. The method can include removing the excess material from the plurality of additively manufactured objects by rotating the plurality of additively manufactured objects. The method can also include receiving sensor data indicative of a cleaning status of the plurality of additively manufactured objects. The method can further include adjusting, based on the sensor data, an operational parameter that enhances removal of the excess material from the plurality of additively manufactured objects.

Abstract: Methods for visualizing treatment outcomes are provided. In some embodiments, a method includes obtaining a first 2D image of a patient's teeth from a mobile device, and obtaining an arch model representing an outcome for the patient's teeth after orthodontic treatment. The method can include matching the patient's teeth in the first 2D image to corresponding teeth in the arch model, using a parametric model. The method can also include determining a target position for the patient's teeth, based on a position of the matched corresponding teeth in the arch model. The method can further include generating a second 2D image depicting the patient's teeth in the target position.

Abstract: Apparatuses and methods for improving a patient's buccal corridor, including developing treatment plans and/or appliances to improve and enhance buccal corridor. Also described herein are methods of treating a patient's teeth to enhance the patient's buccal corridor.

Abstract: Dental devices having folded material. A dental appliance may include a specialized region configured to impart one or more specialized forces to one or more particular areas of a patient's dentition. The specialized region may include a reinforcement structure including a rigid three- dimensional structure, where the rigid three-dimensional structure includes repeating geometric shapes defined by folds in a sheet of one or more polymeric materials. The folds may be folded along a pattern of lines according to the repeating geometric shapes. The rigid three-dimensional structure may have a greater thickness than the unfolded sheet so as to impart a greater rigidity to the specialized region compared to the unfolded sheet, thereby reinforcing the specialized region for imparting the one or more specialized forces to the one or more particular areas of the patient's dentition.

Abstract: In embodiments, a processing device detects a margin line in a model of a preparation from one or more images. The processing device determines, for each segment of a plurality of segments of the margin line, a quality score for the segment. The processing device determines that a segment of the margin line has a quality score that is below a quality threshold, wherein the segment of the margin line was generated based on a first set of images. Responsive to determining that the segment of the margin line has the quality score that is below the quality threshold, the processing devices updates the three-dimensional model of the preparation by replacing a portion of the three-dimensional model associated with the segment of the margin line with image data from at least one of a new image or a second set of images.

Abstract: Systems for determining patient compliance with an orthodontic treatment or retention plan may include a polymeric shell appliance for receiving the patient's teeth, a sensor module on the polymeric shell appliance having a temperature sensor, a proximity sensor, a power source, and a communication antenna for communicating with an external case, and a processor configured to determine that the polymeric shell is being worn by the patient based on temperature data from the temperature sensor and proximity data from the proximity sensor, by determining that a measured temperature is within a body temperature range and that a measured proximity value is within a threshold proximity to an intraoral target. Methods of manufacturing these dental appliances are also described herein.

Abstract: Method, systems, and devices including: accessing a 3D model including a virtual representation of a patient's dentition at a treatment stage of an orthodontic treatment plan; obtaining an image of the patient's face and at least a portion of the patient's dentition; projecting the obtained image into a 3D space to create a projection of the patient's face and the at least the portion of the patient's dentition; generating a modified image of the patient representing the patient in the treatment stage of the orthodontic treatment plan, where the modified image is formed by combining the patient's dentition of the accessed 3D model with the patient's face of the projection; and sending instructions to display the modified image of the patient on an output device.

Abstract: Systems, methods, and devices for producing appliances for expansion of the arch of a patient. Methods may include forming a shell from a prepolymer material, the shell including teeth receiving structures configured to receive at least a portion of the patient's teeth. The prepolymer material may be crosslinked to provide a first crosslinked polymer having a first degree of crosslinking. Methods may also include forming a force generating portion connected with the shell. The force generating portion may be configured to span a space between opposing posterior teeth of the patient and to apply an expansion force between the opposing posterior teeth of the patient. The force generating portion may be formed from the same prepolymer material as the shell. Forming the force generating portion may include varying crosslinking to provide a second crosslinked polymer having a second degree of crosslinking that is different than the first degree of crosslinking.

Abstract: Methods for accommodating dental implants in treatment planning. Methods may include generating a treatment plan to treat a dentition using a series of dental appliances, where a position of a digital implant in a digital dental model is identified. At least one dental appliance of the series of dental appliances may be created, where the at least one dental appliance may be shaped to implement at least one stage of the treatment plan and include an offset portion that is shaped to provide a space between the offset portion and an actual implant to avoid impingement of the at least one dental appliance on the actual implant and allows for osseointegration of the actual implant.

Abstract: A processing device of a system makes a comparison between a current image of an oral cavity of a patient and one or more previously received images of the oral cavity of the patient, the current image and the one or more previously received images having been generated by an intraoral scanner. The processing device determines an amount of overlap between a current field of view of the intraoral scanner and topography scans of the oral cavity based on the comparison. The processing device outputs a warning indicator associated with a positioning of the current field of view of the intraoral scanner responsive to determining that the amount of overlap fails to meet or exceed an overlap threshold.

Abstract: A mold includes a first section, a second section, and a weakened region that joins the first section to the second section. The weakened region is breakable, deflectable, or deformable in response to a first threshold force to enable the first section to be removed from a shell independently of the second section after the shell is formed over the mold. The first threshold force is less than a second threshold force that would damage or permanently deform the shell. The first section is a first mold of at least a portion of one or more first teeth of a dental arch and the second section is a second mold of at least a portion of one or more second teeth of the dental arch.

Abstract: Systems and methods for planning a treatment for a patient's teeth are provided. In some embodiments, a method includes receiving input data representing an initial tooth arrangement of a patient's teeth. The method can include determining a target tooth arrangement for the patient's teeth, the target tooth arrangement including a change in mass of at least one tooth. The method can also include generating a plurality of intermediate tooth arrangements configured to adjust the patient's teeth from the initial tooth arrangement toward the target tooth arrangement. The method can further include generating instructions to output a visualization showing a difference in tooth mass between at least one intermediate tooth arrangement of the plurality of intermediate tooth arrangements and the target tooth arrangement.