Abstract: Systems for post-processing additively manufactured objects are disclosed herein. In some embodiments, a system includes a rotor configured to support a plurality of additively manufactured objects having excess material thereon, an actuator configured to spin the rotor so as to remove the excess material from the plurality of additively manufactured objects, and an energy source configured to apply energy to the plurality of additively manufactured objects to selectively alter a material property of a portion of each of the plurality of additively manufactured objects.

Abstract: Improved systems, methods, and devices for treating sleep apnea are provided herein. In one aspect, an intraoral appliance for treating sleep apnea in a patient comprises an appliance shell comprising a plurality of cavities shaped to receive teeth of a jaw of the patient. The appliance shell can comprise an advancement structure arranged to interact with an opposing jaw of the patient so as to displace the lower jaw anteriorly relative to the upper jaw. The plurality of cavities can comprise cavity geometries shaped to reduce repositioning of one or more received teeth elicited by displacement of the lower jaw anteriorly relative to the upper jaw.

Abstract: A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.

Abstract: Dental attachment positioning apparatuses and methods of use. A dental attachment apparatus may include an orthodontic attachment having a surface shaped to conform to a contour of a buccal surface of a tooth, and one or more registration surfaces that are shaped to conform to one or more occlusal surfaces of the patient's teeth. The one or more registration surfaces may be configured to aid in proper positioning or orientation of the orthodontic attachment. When the attachment positioning apparatus is placed on the patient's dentition, the orthodontic attachment is positioned at a specified location with respect to the buccal surface of the tooth.

Abstract: Systems, methods, and devices for post-processing additively manufactured objects are disclosed herein. In some embodiments, a system includes a plurality of containers configured to receive a plurality of additively manufactured object having excess material thereon. The system can include a rotor having a central shaft and a plurality of arms, each arm having a first end and a second end opposite the first end. The first end of each arm can be coupled to the central shaft and a second end of each arm can be coupled to a respective container of the plurality of containers. The system can also include an actuator configured to spin the rotor so as to remove the excess material from the plurality of additively manufactured objects. The system can further include at least one heat source carried on the rotor to heat the excess material to decrease a viscosity thereof.

Abstract: A method includes to receive, via a computing device, data representing a plurality of teeth, identify data indicating which of the plurality of teeth are unerupted or erupting, predict at least one characteristic of a tooth of the unerupted or erupting teeth after they have fully erupted using one or more tooth eruption prediction factors, generate new data representing the unerupted or erupting teeth in multiple states of eruption based upon the predicted at least one characteristic of the fully erupted teeth, and generate a series of incremental tooth arrangements with the new data to define a proposed orthodontic treatment based on the new data representing the unerupted or erupting teeth in multiple states of eruption.

Abstract: A method for fabricating an oral appliance may include forming, using a 3D additive manufacturing process, a polymeric shell having a plurality of teeth engaging structures shaped to engage the teeth of the patient and forming, using the 3D additive manufacturing process, a force generating component coupled to the plurality of teeth engaging structures, the force generating component may be configured to generate a force in response to a stimulus in order to reposition one or more teeth of the patient. The polymeric shell, the plurality of teeth engaging structures, and the force generating component may include a sequentially polymerized plurality of layers directly fabricated together using the 3D additive manufacturing process.

Abstract: A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.

Abstract: A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.

Abstract: The present disclosure provides methods, devices, and systems for the bonding of attachments for use with dental appliances. For instance, an attachment template tray system may include a template body and a light source tray. Electronic circuitry of the light source tray may be configured to activate, based on a signal from a sensor assembly, radiation source(s) of the light source tray when the light source tray is within a threshold distance of the template body. The template body may include an orthodontic attachment with a release layer covering an engagement surface. Radiation sources of the light source tray may be configured to emit a first range of wavelengths of light for curing a light curable adhesive coating on the orthodontic attachment and a second range of wavelengths of light for degrading the release layer.

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 adjusting an environmental temperature while rotating the plurality of additively manufactured objects according to a dynamic temperature profile that facilitates removal of the excess material from the plurality of additively manufactured objects. The dynamic temperature profile can include (a) a first temperature configured to decrease a viscosity of the excess material, and (b) a second temperature configured to increase a stiffness of the plurality of additively manufactured objects.

Abstract: Dental attachment system and methods. A template body may be configured to fit over a patient's dentition and include a dental attachment. The attachment may include an attachment body including an affixing surface configured to interface with a light curable adhesive coating for bonding the dental attachment to a tooth. The attachment body may include an engagement surface configured to engage with a dental appliance. A release layer may cover the engagement surface. The system may include one or more radiation sources configured to emit a first range of wavelengths of radiation for curing the light curable adhesive coating of the dental attachment. The one or more radiation sources may be configured to emit a second range of wavelengths of radiation for degrading the release layer such that the release layer can be removed from the dental attachment to expose the engagement surface.

Abstract: Systems and methods including expandable dental appliances. The expandable dental appliances may include left and right portions that are distinct and separate parts, and that may be coupled by a sliding expansion feature configured to laterally translate the left and right portions toward or away from each other. Each of the left and right portions may include a palatal region and a tooth engagement region that are customized to respective left and right sides of a patient's upper dental arch. Systems may include multiple non-expandable dental appliances that are configured to be worn sequentially over the patient's upper dental arch to expand the patient's palate over corresponding stages of a treatment plan.

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: 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: A method may include identifying a jaw position of a misaligned jaw of a patient from the virtual image of the patient's jaw and providing a treatment plan. The treatment plan may include tooth repositioning forces and jaw repositioning forces. The method may also include virtually modeling application of jaw repositioning forces between a first repositioning jaw element and a second repositioning jaw element to obtain a virtual model of the application of the jaw repositioning forces on the virtual model of the patient's jaw, identifying one or more constraints limiting the application of the jaw repositioning forces to the misaligned jaw, and adjusting the first repositioning jaw element and the second repositioning jaw element to accommodate the one or more constraints.

Abstract: An appliance comprises a passive component and an active force generating component, in which the active force generating component is configured to react to a stimulus and generate tooth movement forces. In some embodiments, the passive component is configured to deflect when placed on one or more teeth and generate tooth movement forces, which are combined with tooth movement forces of the force generating component. In some embodiments, the passive component comprises a polymer which is less reactive to the stimulus than the force generating component. The force generating component can be configured to increase force to one or more teeth at an appropriate time.

Abstract: A method includes to receive, via a computing device, data representing a plurality of teeth, identify data indicating which of the plurality of teeth are unerupted or erupting, predict at least one characteristic of a tooth of the unerupted or erupting teeth after they have fully erupted using one or more tooth eruption prediction factors, generate new data representing the unerupted or erupting teeth in multiple states of eruption based upon the predicted at least one characteristic of the fully erupted teeth, and generate a series of incremental tooth arrangements with the new data to define a proposed orthodontic treatment based on the new data representing the unerupted or erupting teeth in multiple states of eruption.

Abstract: Provided herein are photopolymerizable monomers, optionally for use as reactive diluents in a high temperature lithography-based photopolymerization process, a method of producing polymers using said photopolymerizable monomers, the polymers thus produced, and orthodontic appliances comprising the polymers.

Abstract: Methods and systems for designing dental appliances are provided. In some embodiments, a method includes identifying one or more intended outcomes for one or more areas of a dental appliance, where the dental appliance is shaped to receive and engage with a person's dentition in accordance with a treatment plan; identifying one or more acceptability criteria for evaluating compliance with the one or more intended outcomes; obtaining an appliance model for the dental appliance, where the appliance model represents the one or more areas with one or more first physical properties conforming to the one or more acceptability criteria, and where the one or more first physical properties are different than one or more second physical properties outside the one or more areas; providing three-dimensional (3D) printing instructions to generate the dental appliance using the appliance model; and 3D printing the dental appliance using the 3D printing instructions.