Described herein are systems and methods for providing personalized oral irrigation. One variation of a system for personalized oral irrigation comprises a fluid reservoir and a customized oral insert in fluid communication with the fluid reservoir. The oral insert comprises an arrangement of fluid openings positioned based on the individual oral or dental structures of a user's teeth to provide a customized fluid flow over the user's teeth. Also described herein are methods for generating an arrangement of fluid openings in a customized oral insert.

An image of a dental arch comprising a preparation tooth is generated by an image capture device associated with an augmented reality (AR) display. The image of the dental arch is registered to previous image data associated with the dental arch. A visual overlay associated with a dental prosthetic to be placed on the preparation tooth is generated based on the registering of the image of the dental arch to the previous image data associated with the dental arch. The visual overlay is output to the AR display, wherein the visual overlay is superimposed over a view of the preparation tooth on the AR display.

Embodiments relate to an aligner breakage solution that tests progressive damage to an aligner. A method includes gathering a digital model representing an aligner for a dental arch of a patient, and simulating progressive damage to the aligner. Simulating progressive damage for a region of the aligner comprises simulating, using at least the digital model, a sequence of loads on the aligner, determining an amount of damage to the region of the aligner for each load, and after each simulation of a load on the aligner, updating the digital model based on the amount of damage to the region of the aligner. The method further includes determining whether a damage criterion is satisfied for at least one region of the aligner and determining whether to implement one or more corrective actions for the aligner.

Taking a digital implant or abutment level digital impression by means of intra-oral, computed tomography or other imaging method provides the restorative doctor and laboratory accurate and effective data for determining the implant position, angulation and locking feature orientation without a physical impression. Such data is correlated with a digital library to produce an output which enables design and fabrication of an accurate restorative device such as a prosthetic tooth or crown. In this way the time-consuming, costly and error prone mechanical replication of the relevant dental anatomy is obviated.

A method for designing a dental prosthesis and a positioning guide for placing the dental prosthesis on implants in the jaw while maintaining proper occlusion relates to designing the dental prosthesis and the positioning guide prior to implant placement.

A process for manufacturing an orthodontic device includes scanning at least a part of a patient's dentition so as to record a volumetric 3-dimensional scan data, and segmenting the scan data so as to obtain individual teeth and/or jaws. A tooth main axis is determined for each tooth in order to obtain a two-dimensional key point representation of each tooth in the occlusal plane. An even order parametric polynomial curve is fit to approximate the dental arch. The even order polynomial curve is transformed into a spline representation. One or more 2-dimensional cuts through the volumetric 3-dimensional digital scan data is selected, wherein at least one size dimension of a tooth is determined from the 2-dimensional cut. An orthodontic device is manufactured, wherein at least one size dimension of the orthodontic device is a function of the size dimension of the tooth.

A method and electronic device for determining a T-marking of a given tooth of a subject are provided. The method comprises: obtaining a 3D digital model representative of a surface of a plurality of subject's teeth including the given tooth; obtaining a reference plane extending along an occlusal surface of the given tooth; generating groupings of the mesh elements along a surface of the given tooth; identifying normals at vertices defining each grouping, and projecting the normals onto the reference plane; determining a labiolingual line of the T-marking as a line of best fit of ends of the projected normals with starts in plane origin; determining, a mesiodistal line of the T-marking as a line extending in the reference plane through the reference plane origin and perpendicular to the labiolingual line; and determining the T-marking of the given tooth as the labiolingual line intersecting the mesiodistal line.

Methods and systems for generating composite images of a patient and models of the patient's dentition are provided. In some embodiments, a method includes generating a plurality of 3D models, each comprising a virtual representation of the patient's dentition at different treatment stages of a treatment plan and obtaining an image of the patient's face and dentition. The method can include projecting the obtained image into a 3D space to create a projected 3D model of the patient's face and dentition. The method can also include generating a plurality of modified images, each representing the patient in a treatment stage of the treatment plan and formed by combining the patient's dentition of one of the 3D models with the patient's face of the projected 3D model. A modified image corresponding to a selected treatment stage and a corresponding 3D model can be provided for display.

An oral insert includes a plurality of manifolds and a plurality of fluid nozzles. A manifold switch is coupled to the plurality of manifolds. The manifold switch is configured to select which of the plurality manifolds is to receive fluid from a fluid source.

Embodiments relate to the methodology of direct manufacture of a customized labial/lingual orthodontic tube by using a ceramic slurry-based additive manufacturing (AM) technology. For example, a method of manufacturing customized ceramic labial/lingual orthodontic tubes by additive manufacturing may comprise measuring dentition data of a profile of teeth of a patient, based on the dentition data, creating a three-dimensional computer-assisted design (3D CAD) model of the patient's teeth, and saving the 3D CAD model, designing a virtual 3D CAD tube structure model for a single labial or lingual tube structure based upon said 3D CAD model, importing data related to the 3D CAD tube structure model into an additive manufacturing machine, and directly producing the tube with the additive manufacturing machine by layer manufacturing from an inorganic material including at least one of a ceramic, a polymer-derived ceramic, and a polymer-derived metal.