A method for exporting a three-dimensional dental design model based on a three-dimensional dental library model (4) from an augmented reality application (6) which is adapted to visualize an image of the dental library model (4) rendered by a virtual camera with a preliminary pose and scale in a photo (2) of a face of a patient taken by a camera under a viewing axis to the face of the patient, the photo (2) including a mouth opening showing at least part of the present situation of the patient's dentition.

A virtual model of an intraoral cavity is provided, wherein this process is initialized by a dental clinic, and the design and manufacture of a suitable dental prosthesis for the intraoral cavity is shared between a dental lab and a service center.

A method for validating a preparation of at least one tooth in a prepared set of teeth for determining whether the prepared tooth is capable of accepting a dental restoration includes obtaining a virtual dental preparation guide configured for validating the preparation of the at least one tooth; obtaining a digital 3D representation of the prepared set of teeth; visualizing the virtual dental preparation guide together with the digital 3D representation of the prepared set of teeth; and validating from the visualization of the virtual dental preparation guide together with the digital 3D representation of the prepared set of teeth whether the prepared at least one tooth is shaped such that it can accept the dental restoration.

Disclosed is a non-calibrated scanning system to be modified to a calibrated scanning system based on generating a three-dimensional representation of a three-dimensional calibration-object.

Continuous adjustment appliances are provided that can store a large number of geometries that can be successively accessed throughout orthodontic treatment, with each geometry can correspond to an arrangement of the patient's teeth. An appliance according to the present disclosure can be stimulated to transition among the myriad geometries, which can include changes to the overall shape of the appliance as well as the position and geometry of the cavities corresponding to a patient's teeth. Methods of creating the continuous adjustment appliances and methods of treatment using the continuous adjustment appliances are also revealed.

Apparatuses, including sleeves, intraoral scanning systems to use these sleeves, and methods of using the sleeve, that authenticate the sleeve for use with an intraoral scanning system. Authentication may include verifying that the sleeve is new (unused) and/or verifying that the sleeve is appropriate and/or intended for use with the intraoral scanning system. Once authenticated, operation parameters of the intraoral scanning system can be automatically set based on information from a scanned identifier on the sleeve.

Methods for manufacturing anatomical healing caps, including forming an anatomical healing cuff body for a given tooth position, the anatomical healing cuff body having a cross-section and an exterior surface so that the anatomical healing cuff body provides substantially custom filling of at least an emergence portion of a void where a natural tooth once emerged from the void or where a tooth would have emerged from a void of the given tooth position, and forming both lateral buccal and lingual handle extensions extending from the anatomical healing cuff body so that the manufactured anatomical healing cap includes a laterally extending buccal handle extension and an oppositely disposed laterally extending lingual handle extension, the buccal and lingual handle extensions being integrally formed with the healing cuff body. The healing caps can be formed using a casting jig, by machining, by 3D printing, or other suitable methods.

A method for measuring regions of a tooth in a mouth including: measuring at least one surface point on a surface of the tooth with respect to an element mechanically coupled to said surface point; determining a location of at least one visible reference mechanically coupled to said surface point with respect to said element; estimating a location of said surface point with respect to said visible reference. A device used for such measuring may include a main body comprising a final optical element of an imager which defines an optical field of view directed in a first direction; and a measurement element coupled to said main body extending generally in said first direction; where a tip of said measurement element is sized and shaped to be inserted between a tooth and adjacent gingiva; where said optical field of view is sized to image at least part of a tooth.

A dental implant assembly containing an integrally-formed universal abutment which has a top section, a bottom section integrally joined to the top section, and a passageway extending through these sections. The passageway is formed by different size bores, initially a larger size than decrease in size. The top section of the abutment has a cross-sectional shape substantially like a polygon; the shape is formed by alternating linear and arcuate walls joining to a bottom section having a cross-sectional shape substantially like a polygon.

One aspect of the present application provides a method for generating 3D digital model of teeth, the method comprises: scanning a patient's teeth with a first feeler gauge inserted in a first gap between two adjacent teeth, to obtain a first 3D digital model; extracting a position and a direction of the first feeler gauge from the first 3D digital model; and modifying the first gap of an original 3D digital model of teeth based on the specification, position and direction of the first feeler gauge, to obtain a refined 3D digital model of teeth.