Abstract: A system may include one or more processors and memory comprising instructions that when executed by the one or more processors cause the system to receive a first dental image depicting a patient's teeth in a first view and crop the first dental image. The system may generate a score of overall image quality for the cropped first dental image using a trained neural network. The trained neural network may be trained using a plurality of ranked sub-sets of dental images and a loss function may be configured to preserve a relative ranking order of the ranked sub-sets of dental images. The sub-sets of dental images may be ranked based on perceived overall image quality. The system may determine that the score is below a threshold and request, based on the determination, a second dental image depicting the patient's teeth in the first view.

Abstract: Methods of forming dental appliances. A virtual arch element may be formed using a virtual dental arch of a patient. The virtual arch element may be wider than an arch width across the virtual dental arch. One or more virtual tooth engagement structures connected to the virtual arch element may be formed. The virtual tooth engagement structure(s) may be configured to engage with teeth on opposing sides of the virtual dental arch. The virtual arch element may extend from a lingual side of the virtual tooth engagement structure(s) so that, when the virtual tooth engagement structure(s) are engaged with the teeth, the virtual arch element spans across the palate and the virtual arch element and the virtual tooth engagement structure(s) applies a virtual force on the teeth on opposing sides of the virtual dental arch in accordance with a stage of a treatment plan.

Abstract: A system includes an intraoral scanner and a computing device. The intraoral scanner generates intraoral scans of a dental site. The computing device processes the intraoral scans using a trained machine learning model to classify points of the intraoral scans into first points having a first dental class and second points having a second dental class; generates a 3D model of the dental site from the intraoral scans; determines first points of the 3D model having the first dental class based on the first points of the intraoral scans and second points of the virtual 3D model having the second dental class based on the second points of the intraoral scans; and removes data for a plurality of the first points of the virtual 3D model having the first dental class to generate a modified virtual 3D model.

Abstract: The present technology provides solutions for anonymizing patient data and in particular, for anonymizing potentially unique patient-identifying information while retaining clinically relevant information, for example, that can be used to illustrate the results or outcomes of a clinical intervention. In some aspects, a process of the disclosed technology can include steps for receiving patient data, wherein the patient data comprises a patient image corresponding with a patient, receiving treatment data, wherein the treatment data is based on a treatment goal for the patient, automatically determining, using one or more semantic controls, one or more anonymization parameters for the patient image; and generating, based on the one or more anonymization parameters, an anonymized patient image. Systems and machine-readable media are also provided.

Abstract: Systems and methods for adjusting an arch of teeth. An upper dental appliance may include an arch element that is wider than a width of a patient's upper arch such that, when the patient wears the upper dental appliance. The upper dental appliance may apply a transverse expansion force on opposing posterior teeth of the patient's upper arch for widening the width of the patient's upper arch. A lower dental appliance may include a shell having cavities that are shaped to receive teeth of the patient's lower arch. The shell may be shaped to apply a force to reposition one or more of the teeth of the patient's lower arch from a first arrangement toward a second arrangement in accordance with a stage of a treatment plan.

Abstract: Provided herein are systems and methods for determining hook and or positioning feature placements during dental treatment planning. A patient's dentition may be scanned and/or segmented. A target tooth may be identified. Hook and or positioning feature placement may be determined based on satisfying manufacturing and clinical constraints. The hook or positioning features can be input into a dental treatment planning system.

Abstract: A system for generating a treatment plan for repositioning a plurality of teeth comprises instructions to receive a digital data set representing the plurality of teeth, and determine a movement trajectory for repositioning, each tooth from an initial position and orientation towards a target position and orientation. The movement trajectory of at least one tooth comprises movement along a plurality of different directions. A movement velocity is determined for repositioning each tooth along the corresponding movement trajectory. The movement velocity is determined independently for each tooth, and the movement velocity for the at least one tooth is determined independently for each direction.

Abstract: A method for treating malocclusions of a patient's teeth is disclosed. The method includes receiving an initial position of a patient's teeth and a target position of the patient's teeth. The method also includes determining a treatment plan to reposition the patient's teeth towards the target position. The method also includes receiving treatment strategies for the patient's teeth based at least in part of the treatment plan and matching the initial position of the patient's teeth, the target position of a patient's teeth, and the treatment strategies for the patient's teeth with initial positions, target positions, and treatment strategies of a plurality of existing cases. The method also includes sending the matched cases to a dental practitioner including matched educational assets.

Abstract: The disclosed computer-implemented method for selecting locations of mandibular relocation features (MRFs) on oral appliances may include determining candidate locations for placing an MRF on a first oral appliance for a first stage of mandibular relocation (MR) treatment and determining candidate locations for placing an MRF on a second oral appliance for a second stage. The method may include selecting from the candidate locations for the first stage and the second stage based on decreasing a distance between the selected pair of candidate locations. The method may further include processing multiple MRFs in parallel. The method may also include increasing a number of initial candidate locations. Locations for intermediate stages may be selected based on interpolating between the first and second stages or based on decreasing a distance between the selected pair if the interpolation fails. The intermediate stages may be processed using a binary search or a linear search.

Abstract: An apparatus for intraoral scanning comprises an elongate wand comprising a probe at a distal end of the elongate wand. The apparatus further comprises one or more structured light projectors disposed within the probe, each structured light projector comprising: (a) a housing; (b) a light source disposed within the housing and comprising: a semiconductor laser die; and a beam shaping optical element; and (c) a pattern generating optical element. A distance D between an emission point of the semiconductor laser die and an input face of the beam shaping optical element is 50-250 microns. Each structured light projector is configured to project a pattern of light onto an intraoral surface when the light source of the structured light projector is activated to emit light through the pattern generating optical element of the structured light projector.

Abstract: An intraoral scanner includes one or more structured light projectors, a camera, and control circuitry. The structured light projector(s) are to project a pattern of light onto an intraoral 3D surface. The camera comprises a focusing lens configured to focus at a plurality of different focal depths, each associated with a distinct optical distortion. The camera captures of at least a portion of the pattern of light projected onto the intraoral 3D surface at one or more of the different focal depths. The control circuitry is to change a focus position of the focusing lens to cause the camera to capture the images of the intraoral three-dimensional surface at the one or more different focal depths, wherein the change in the focus position causes a change in optical distortion for the camera and a corresponding change in a calibration of the camera associated with the change in the optical distortion.

Abstract: A method includes receiving a video comprising a face of an individual, the video comprising a current condition of a dental site of the individual. The method includes determining or receiving an altered condition of the dental site and modifying the video by replacing the current condition of the dental site with the altered condition of the dental site in the video.

Abstract: Methods and systems for processing dental workflows. In a pre-routing module, a determination may be made as to whether process(es) in generating an output workflow performed on a digital dental model should be manually or automatically based on comparing patient-specific clinical parameters against clinical rules. In a post-routing module, a determination may be made as to whether the output workflow contains output parameter value(s) that is outside of a range of acceptable output parameter values. An indicator to manually perform the process(es) may be transmitted if the post-routing module determines that output parameters value(s) is outside of the range of acceptable output parameter values. The output workflow may be modified based on the process(es) being manually or semi- manually performed. Dental appliance(s) may be fabricated in accordance with the modified output workflow.

Abstract: A method of treating malocclusions of teeth may include receiving a scan of a patient's teeth and generating a treatment plan to move a patient's teeth from a first position toward a second position. The treatment plan may include moving a jaw from a first position towards a second position. The treatment plan may include a series of jaw movement stages to move the jaw from the first position towards the second position. The method may include generating a digital model of an aligner having mandibular relocation structures. A location of the mandibular relocation structures may be based on a set of location constraints. The method may include fabricating a physical aligner based on the digital model of the aligner.

Abstract: Methods and systems are described that use 2D images and intraoral scans to generate and/or augment 3D models of dental site. In one example a method includes receiving a plurality of intraoral scans of a dental site generated by an intraoral scanner and a plurality of two-dimensional (2D) images of the dental site generated by the intraoral scanner, generating a three-dimensional (3D) surface of the dental site from the plurality of intraoral scans, determining a correspondence between points on the 3D surface and points in one or more 2D images of the plurality of 2D images, and performing one or more operations using the correspondence between the points on the 3D surface and the points on the one or more 2D images.

Abstract: Apparatuses and methods for customized retainers to prevent relapse. In particular, described herein are customized retainers, and methods and apparatuses for making customized retainers that specifically reenforce and prevent movement of one or more teeth having a higher likelihood of relapse following completion of an orthodontic treatment plan.

Abstract: Systems and methods for segmenting dental scans. First and second segmented volumes of scan data may be formed, where the first segmented volume may have a lower resolution than the segmented volume. Segmenting scan data may be formed by merging the first segmented volume with the second segmented volume. Merging may include removing teeth labels from the first segmented volume, adjusting a resolution of the first segmented volume to be the same as a resolution of the second segmented volume, and replacing voxels in the first segmented volume with voxels from the second segmented volume. The segmented scan data may be aligned to a digital model of the patient's dentition. The digital model of the patient's dentition may be modified to include the tooth roots from the aligned segmented scan data to form a modified digital model. A treatment plan may be displayed or modified using the modified digital model.

Abstract: A shell removal device includes a platform configured to secure a mold. An untrimmed shell is formed over the mold. The shell removal device further includes a drive mechanism configured to move the platform away from the untrimmed shell responsive to sensor data indicative that the untrimmed shell has begun to separate from the mold.

Abstract: Systems and methods for manufacturing objects are provided herein. In some embodiments, a method for producing an additively manufactured object includes determining a viscosity of a curable material to be used to form the additively manufactured object. The method can include determining a temperature of the curable material, based on the viscosity. The method can further include adjusting one or more heat sources configured to heat the curable material, based on the temperature. The method can include applying energy to the curable material to form a portion of the additively manufactured object, after adjusting the one or more heat sources.

Abstract: Systems and methods for forming eruption compensation (EC) features in dental appliances for accommodating erupting teeth. Methods may include scaling a virtual tooth model by identifying a crown center line along a buccal-lingual axis of the virtual tooth model, enlarging a lingual side of the virtual tooth model relative to the crown center line by a first scaling factor, and enlarging a buccal side of the virtual tooth model relative to the crown center line by a second scaling factor, where the first scaling factor is greater than the second scaling factor. The scaled virtual tooth model may be added to a 3D dental model of the subject's dentition at an EC region to form a modified 3D dental model. The modified 3D dental model including the scaled virtual tooth model corresponding to the erupting tooth may be output.