Abstract: A method may include receiving a digital data set representing an initial tooth arrangement of a plurality of teeth. A linear movement may be is determined for repositioning at least one tooth from an initial position and orientation towards a target position and orientation over a plurality of stages, the trajectory may include a first movement velocity along a first directional component and a second movement velocity along a second directional component orthogonal to the first. Upon determining that the first movement velocity is less than a target velocity, the first movement velocity may be increased for a first one or more stages. A treatment plan may be generated to move the at least one tooth at the increased first movement velocity along the first directional component and at the second movement velocity along the second directional component.

Abstract: A system of generating a blood oxygen saturation map of a patient's gingiva may include an intraoral scanner, a display, a processor, and memory comprising instructions. The instructions when executed by the processor may cause the system to generate, using the intraoral scanner, 3D scan data of a first portion of a dentition of a patient including a first portion of a gingiva of the patient. The system may generate, using the intraoral scanner, blood oxygen saturation data for the first portion of the dentition of the patient including the first portion of the gingiva of the patient and map the blood oxygen saturation data of the first portion of the gingiva of the patient to the 3D scan data. The system may display, on the display, the 3D model of the dentition of the patient with feedback indicating locations of blood oxygen saturation below a threshold.

Abstract: An intraoral scanner comprises a light source to emit light, a spatial pattern to output patterned light, a beam splitter, an optical system to focus the patterned light, and a hollow front tip comprising a mirror to redirect the patterned light out of a side exit of the intraoral scanner. The intraoral scanner further comprises an image sensor to receive returning patterned light that has reflected off of the teeth and been redirected to the image sensor by the beam splitter. The intraoral scanner further comprises a depth scanning module to axially translate one or more lenses of the optics system in an optical axis to change a focus setting of the optics system. The depth scanning module is configured to axially translate the one or more lenses by 0.1-5 mm to achieve a depth scanning range of 5-40 mm at a scan speed of about 5-50 scans per second.

Abstract: Methods of cleaning dental appliances. One or more dental appliances may be placed on a frame in a chamber of a cleaning case. The frame may have a planar shape with openings and may be in direct contact with a bottom reflective surface of the chamber. The frame may elevate the one or more dental appliances from the bottom reflective surface to create a gap between the one or more dental appliances and the bottom reflective surface. Activating the cleaning cycle may include: emitting visible light between 400-470 nm from one or more visible light emitting light sources within the closed chamber; and reflecting light from one or more surfaces of the closed chamber, including the reflective bottom surface, to illuminate the one or more dental appliances within the chamber with the 400-470 nm light.

Abstract: A method for managing delivery of dental treatment may include identifying a dental treatment plan for a patient's teeth and generating one or more first treatment tasks to implement a first phase of the dental treatment plan. The method may also include obtaining a digital representation of a dentition, generating graphical treatment instructions representing how to administer the one or more first treatment tasks on the digital representation of the dentition, and prior to fabricating a first dental appliance for carrying out the dental treatment plan, graphically representing, to a treating practitioner, the graphical treatment instructions for how to administer the one or more first treatment tasks.

Abstract: A method may include generating a model of an orthodontic appliance having a shell having teeth receiving cavities shaped to receive and reposition the patient's teeth. At least one of the cavities may be shaped to apply a resilient repositioning force to move at least one of the patient's teeth from a current arrangement toward a target arrangement. The method may include forming a ridge on the at least one of the cavities having a width and a length greater than the width. The ridge may be configured to apply at least a portion of the resilient repositioning force to the at least one of the patient's teeth. The method may also include modeling the orthodontic appliance with the ridge on the patient's teeth and modifying a portion of the shell to compensate for modeled contact of the portion of the shell with the at least one patient's tooth.

Abstract: A system comprises a first computing device that is configured to receive, at a clinical settings service executing on the first computing device, a request for clinical settings for a patient case from a medical application executing on a second computing device. The computing device is further configured to determine clinical settings for the patient case, determine one or more clinical settings files for the patient case, and second the one or more clinical settings files to the second computing device.

Abstract: Interproximal reduction guides apparatuses and methods of making and using them are described herein. These interproximal reduction guides apparatuses may include a body that fits over the patient's dental arch and one or more guide slots formed in them configured to limit the motion of an interproximal reduction cutting tool in a defined manner.

Abstract: A method for mandibular advancement may include determining a threshold force value for an amount of anterior-posterior force to be applied to the patient's teeth to displace the patient's lower jaw anteriorly relative to the patient's upper jaw, determining a force distribution on the teeth of the patient's lower jaw that distributes the anterior-posterior force on the teeth of the patient's lower jaw by preferentially loading the posterior teeth and determining a geometry for an intraoral appliance configured to displace the lower jaw anteriorly relative to the upper jaw when worn by the patient in order to treat the sleep apnea. The intraoral appliance may be configured to provide an amount of anterior-posterior force to the patient's teeth that is no greater than the threshold force value with the force distribution.

Abstract: An intraoral scanning system comprises an intraoral scanner and a computing device. The intraoral scanner is to configured to generate intraoral scan data of a bite of a patient. The computing device is configured to receive the intraoral scan data of the bite of the patient during scanning of the bite of the patient, wherein each datum of the intraoral scan data shows a portion of a lower dental arch and a portion of an upper dental arch of the patient. The computing device determines a difference in a relative position of the lower dental arch to the upper dental arch between at least a first datum of the intraoral scan data and a second datum of the intraoral scan data and performs a remedial action responsive to determining that the difference in the relative position of the lower dental arch to the upper dental arch exceeds a difference threshold.

Abstract: An intraoral device for use in treating a sleep apnea condition may include an intraoral device body, a first advancement structure configured to be coupled to a first jaw of a patient, and an intraoral actuator coupled to the first advancement structure. The intraoral actuator may be configured to displace a lower jaw of the patient from a first position to a second position in order to treat the sleep apnea condition. Displacing the lower jaw of the patient may include advancing the lower jaw from the first position to the second position with the first intraoral actuator acting against the first advancement structure. The intraoral actuator may displace the lower jaw of the patient based at least in part on data from at least one sensor.

Abstract: Disclosed herein are curable compositions containing a plurality of polymerizable monomers comprising at least 80 wt % of a crosslinker for additive manufacturing. The curable compositions comprise high-crosslinker content, and yield tough, lightweight polymeric materials suitable for dental appliances, including but not limited to aligners, attachment placement devices, incremental palatal expanders, dentures, crowns, etc.

Abstract: Generating a virtual filer for design of an orthodontic aligner includes inserting the virtual filer in a virtual model of a dental site between at least two naturally adjacent teeth in the virtual model, transforming points of the virtual filer into a voxel volume, and determining a geometry of an updated virtual filer by transforming a surface of the voxel volume into a polygonal mesh.

Abstract: An intraoral scanning system comprises an intraoral scanner and a base unit comprising a computing device and a cradle for the intraoral scanner. Responsive to placement of the intraoral scanner into the cradle, the intraoral scanner causes the base unit to wirelessly broadcast a unique identifier according to a first wireless communication protocol and receives the unique identifier. The intraoral scanner uses the unique identifier to establish a wireless connection with the base unit according to a second wireless communication protocol.

Abstract: Methods and apparatuses for orthodontic treatment planning, including determining whether and how to activate existing attachments for use in secondary treatment. In some cases, activation may be by the dental appliance rather than through the attachment object. The secondary treatment may be needed to further treat the patient's teeth. The existing attachments may have been used as part of a previous treatment plan. A scan of the patient's teeth with the attachments is used as a basis to determine whether the existing attachments have a suitable shape and/or other characteristics for activation. If one or more of the existing attachments is determined to be suitable for activation, a secondary treatment plan can be generated based on activation of the existing attachments.

Abstract: Systems, methods, devices and apparatus for mandibular advancement or retraction via bone anchoring devices are described herein. In various aspects, an apparatus for treating a patient via mandibular advancement or retraction comprises a plurality of anchoring devices positioned in the patient's intraoral cavity. Each of the plurality of anchoring devices can be positioned in bone of the patient's upper jaw or bone of the patient's lower jaw. One or more connecting structures can be removably coupled to and extend between the plurality of anchoring devices in order to displace the lower jaw anteriorly or posteriorly relative to the upper jaw.

Abstract: Systems, methods, and devices for additive manufacturing are provided. In some embodiments, an assembly for supporting 3D objects during an additive manufacturing process is provided. The assembly can include a plurality of build platforms, each build platform configured to support one or more 3D objects during the additive manufacturing process. The assembly can also include a carrier configured to support the plurality of build platforms. The assembly can further include an attachment mechanism configured to releasably couple the plurality of build platforms to the carrier during the additive manufacturing process such that the plurality of build platforms collectively form a build plane having a vertical deviation no greater than 500 ?m.

Abstract: A system for treating food traps may include an intraoral scanner and a processor coupled in electronic communication with the intraoral scanner, a processor, and memory comprising instructions that when executed by the processor cause the system to carry out a method. The method may include receiving a 3D digital model of a patient's detention and analyzing the 3D digital model of the patient's detention by detecting anatomic structures in the 3D digital model of the patient's detention that correspond to food traps. The 3D digital model of the patient's detention may be displayed on a display and digital feedback may be provided on the displayed 3D digital model of the patient's detention. The feedback may identify a location of the food traps.

Abstract: Removable polymer shell appliances. An appliance may include first and second tooth engagement regions including corresponding first and second sets of teeth receiving cavities shaped to receive a patient's teeth on respective left and right sides of the patient. The appliance may include an arch region shaped to expand a dental arch of the patient according to a stage of a treatment plan. The arch region may extend between the first and second tooth engagement regions. The arch region may include one or more raised portions extending transversely across the arch region to reinforce the arch region in a transverse direction. The arch region and the first and second tooth engagement regions may be formed of the same material. The arch region may be offset in a vertical direction to form a gap between the arch region and a patent's palate when the appliance is worn over the patient's teeth.

Abstract: A method includes: identifying marking parameters associated with performance of dental appliance etching; includes identifying a first segment of marking data to be etched onto a dental appliance; causing, via dental appliance marking equipment based on the marking parameters, etching of the first segment on the dental appliance; capturing image data associated with the etching of the first segment; and causing the marking parameters to be updated based on the image data. A method includes: subsequent to dental appliances being simultaneously thermoformed via a thermoforming system in a single batch, determining dental appliance data and laser tool data; determining, based on the dental appliance data and the laser tool data, global plan data for performing laser operations of the dental appliances via laser tools; and causing, based on the global plan data via the laser tools, the laser operations of the dental appliances.