An interproximal reduction (IPR) kit and method for using the same. The patient takes their own dental impression and submits it to a dental service provider for a treatment plan. A set of aligners based on the treatment plan are then delivered to the patient as part of a kit. The kit also includes a set of written instructions and/or a treatment diagram and a plurality of strips used to reduce the widths of specific spots of the patient's teeth according to the treatment plan. The patient follows the reapproximation instructions or is instructed to go to a website for supervision for the performance of the reapproximation process. After sufficient instruction, the patient applies the plurality of strips to the correct spots between their teeth. Once reapproximation is complete, the patient is ready to begin wearing the aligners as dictated by the treatment plan.

Systems and methods of simulating dental treatments are disclosed. A method may include capturing a first 2D image of a patient's face, including the patient's teeth, building a parametric 3D model of the patient's teeth based on the 2D image, developing a simulated outcome of a dental treatment of the patient's teeth by rendering the 3D model with the patient's teeth in one or more positions and/or orientations corresponding to the treatment goals of the dental treatment plan, and rendering a second 2D image of the patient's face with teeth according to a simulated outcome of the dental treatment plan. As noted herein, the dental treatment plan may include orthodontic and/or restorative elements. The simulated outcome may correspond to estimated outcomes and/or intended outcomes of the dental treatment plan.

An oral cleaning system provides motivating feedback to a user before brushing and includes: a power toothbrush (10); one or more sensors (26) on or within the toothbrush; a processor (30) within the toothbrush configured to process sensor information obtained from the one or more sensors during a first brushing session of a user; and a feedback system (40) on or within the toothbrush responsive to the processor and configured to communicate brushing information to the user at a time subsequent to the first brushing session but before a second brushing session of the user.

A method for promoting compliance with an oral hygiene regimen includes displaying, on a display device, a representation of at least a portion of a set of teeth of a user. The method also includes overlaying an indicium on the representation such that the indicium is associated with a first section of the representation. Responsive to a determination, via at least one of one or more processors, that a head of an oral hygiene device is positioned directly adjacent to a first section of the set of teeth that corresponds to the first section of the representation for at least a predetermined amount of time, the indicium is removed from the display device.

A medical simulator handpiece (112; 114) has a body (156; 180), a first formation (157; 184) representing a first medical tool and is characterised by a second formation (159, 161; 186) representing a second, different medical tool in which the first and second formations are connected and spaced apart to permit a user to manipulate one or other of the first and second formations.

A personal electronic device is adapted to construct data tables from user input received over time relating to translations of translatable items from a first language to a second language. Entries in a data table for a user are dynamic and may indicate likelihoods of the user correctly translating translatable items as a function of time. Each translatable item may have a different time-dependent likelihood of a correct translation. Operation of the personal electronic device for a user may be based in part on the acquired, time-dependent likelihoods for that user, so that information may be presented to the user in a more efficient manner.

Provided is a dental model in which a model tooth having a root portion similar to an actual tooth is attachable to and detachable from a gum portion, and an articulator. A dental model 1 according to the present disclosure includes: a gum portion 12 in which an insertion hole 20 to which a model tooth 50 is to be inserted is provided; and a lid portion 18 provided on an oral side of the insertion hole 20 in the gum portion 12, in which the lid portion 18 constitutes a part of the gum portion 12 in a closed state, and provides a recess portion 18b that is continuous from the insertion hole 20 and exposes at least a part of a root portion of the model tooth in an opened state, and in which the lid portion 18 is configured to be opened and closed relative to another portion of the gum portion 12.

An automated measurement apparatus has a tooth holder receiving a tooth and a measurement sensor that senses a measured distance to a corresponding surface portion of the tooth. Linear and rotational actuation assemblies support the measurement sensor and the tooth holder for translating and angular relative movement. A controller operates (i) the rotational actuation assembly to locate the tooth holder relative to the measurement sensor in one or more angular orientations and (ii) the linear actuation assembly to displace the measurement sensor through an array of measurement locations within a measurement plane to capture the measured distance at each array location at each angular orientation and thereby define a geometry of the tooth surfaces. The controller may define the geometry subsequent to a dental preparation alteration of the tooth and calculate an alteration metric representing one or more aspects of the defined geometry for comparison to a stored target metric.

A ray-free dental X-ray periapical film virtual imaging method based on virtual reality (VR) includes: constructing a VR positioning system, and tracing a position of a tracker bonded bound with a tube of a dental film machine and a spatial attitude matrix in real time; scanning and reconstructing a digital three-dimensional (3D) model of dentition; respectively setting different materials and transparency for a shell of a tooth model and an internal pulp cavity; constructing a virtual environment of a simulated oral cavity; assigning an attitude and position of the tracker to a virtual camera by using a network communication module, and controlling the virtual camera to move; placing the tracker in a specific position and orientation to calibrate so as to obtain a position coordinate of a dentition model in the virtual environment; and aligning the tube to teeth, and rendering a virtual periapical film.

A method for digital archiving and manufacturing of dental prosthetics and a prosthesis, and teaching and training for same are provided. The method mainly includes the following steps: preoperative scanning: creating a first digital model file; optical positioning and turning treatment: creating a second digital model file from a turning process; physical model calculation: creating reversely an autologous crown model file of a patient; and fixed denture manufacturing: manufacturing, according to the second digital model file and the autologous crown model file, a fixed denture that meets needs of the patient, so that an inner layer structure of a crown of the fixed denture can be tightly bound to an abutment, and it may be decided to retain an original crown contour according to needs. A tooth model based on a teaching digital model file can be used for teaching and training of a trainee with the foregoing method.