Align Technology, Inc.

Ormco Corporation

Artem Borovinskih

Shiva Prasad Sambu

Rene M Sterental

Eric E Kuo

Anton Spiridonov

Mitra Derakhshan

Maneesh Dhagat

Mikhail Minchenkov

Anton Terekhov

Ivan Pavlov

Eric P Meyer

Yury A Brailov

Jason Ramos

Alexey Vishnevskiy

Igor Kvasov

Sergey Nikolskiy

Qinghui Lu

Dmitry Sultanov

Ivan Ionov

Evgeny Timofeyev

Vasily Ivanov

Ekaterina Tolstaya

Sergey Kurchatov

Rahul Khardekar

Vadim Matov

Roman A Roschin

Fuming Wu

Rick M Matty

Anatoliy Boltunov

Dmitriy Konstantinovich Ten

Yevgeniy Sirovskiy

Pavel Agapov

Mithil J Shah

Vasiliy Petrovich Ivanov

Carina Koppers

Giovanny Garro

Giovanny Garro Acevedo

Carina Morik

Ilia Ankudinov

James Clete Culp

Craig E Farren

Kenneth A Phelps

Methods and systems for IPR planning. One method includes identifying an overlap between a first tooth and a second tooth in a patient's dentition at a target position of a treatment plan; identifying first and second ridge endpoint reference lines on each of the first tooth and the second tooth; calculating a distance difference between the first and second ridge endpoint reference lines; determining that the distance difference is outside a threshold difference; revising the treatment plan by adding one or more stages to the treatment plan where the distance difference between the first and second ridge endpoint reference lines is within the threshold difference; and prescribing IPR on one or both of the first and second teeth at the one or more additional stages of the treatment plan.

Methods and systems for interproximal reduction planning

Systems and methods for monitoring a dental patient's progress during treatment. A first teeth mask for a captured 2D image of teeth at a particular time during treatment and a second teeth mask for an expected 2D image of the teeth may be generated. The expected 2D image may be generated from an expected 3D model representing an expected configuration of the teeth at the particular time. The captured 2D image and the expected 2D image may be compared, with the first and second teeth masks aligned, to determine whether the teeth are within a threshold level of correspondence to the expected configuration. An indication as to whether the dental treatment is proceeding as expected based on whether the configuration of the teeth is within the threshold level of correspondence may be provided.

Image based assessment for dental treatment monitoring

A method of planning an orthodontic treatment for a patient may include receiving a digital representation of the patient's dentition in an initial arrangement, determining a first geometry for an upper shell of an orthodontic appliance. The first geometry may include a first plurality of tooth-receiving cavities shaped to receive an upper jaw of the patient's dentition and an upper cutout disposed along an upper gingival edge of the upper shell. The method may also include determining a location of an upper elastic band receiving member. The location of the upper elastic band receiving member may correspond to a position of the upper cutout. The location of the upper elastic band receiving member may be determined so as to generate a tooth repositioning force to facilitate repositioning of the patient's dentition when an elastic band is secured to the upper elastic band receiving member.

Devices and methods for dental appliances with cutouts

Systems and methods of defining a trimline in relation to modeled teeth including modeled gingiva. The trimline is for use to manufacture an aligner. A margin point is placed proximate a gingival margin at each tooth on at least one jaw in the model. A trimline connects the plurality of margin points from which machine code is generated. The aligner manufactured includes an edge that correlates with the trimline according to the machine code. A margin point may be proximate a gingival zenith. At least one tooth cooperates with the modeled gingiva to define a line around the tooth. The trimline includes at least one tooth curve and at least one connector curve connected to the tooth curve at a transition point. At least one control point is on the trimline between two margin points. The trimline is defined by a spline that may be a Bèzier curve.

Systems and methods for designing and manufacturing an orthodontic appliance

Orthodontic positioning devices, and related methods and systems, are disclosed for use with one or more orthodontic elastic members. The disclosed devices are configured to couple with an orthodontic elastic member so as to react a force from the elastic member into the appliance to, for example, generate traction forces on the patient's teeth to produce a desired occlusion. A positioning device includes a patient removable tooth positioning appliance having teeth receiving cavities shaped to receive and apply a resilient positioning force to a patient's teeth. The appliance includes a hook configured to interface with an orthodontic elastic member. The hook can be configured to be offset from a surface of a tooth when the appliance is coupled with the patient's teeth and no elastic member is coupled with the tooth. The hook can be curved so that the hook is more retentive on the aligner. The hook can be reinforced so that the reinforcement resists deformation when the elastic is in place.

Reinforced aligner hooks

Methods and systems for determining a dental treatment difficulty in digital treatment planning. The methods may include calculating tooth position changes from an initial dental model to a target dental model in a mouth quadrant of a patient's dentition. The changes in position may be determined by projecting distances between initial positions and subsequent positions of teeth onto an arch line of the initial dental model. A treatment difficulty of anterior-posterior (A-P) correction may be determined for the mouth quadrant based on an average change in position, wherein a greater average change in position is associated with a higher treatment difficulty of A-P correction. The digital treatment plan may be adjusted so that a provider skill level meets or exceeds the treatment difficulty of A-P correction.

Methods and systems for determining a dental treatment difficulty in digital treatment planning

An orthodontic appliance including a shell aligner having a portion accommodating movement of a patient's bracketed teeth between a first position and the second position as elicited by force from an orthodontic braces appliance worn by the patient, related systems and methods.

Orthodontic appliances that accommodate incremental and continuous tooth movement, systems and methods

Orthodontic positioning devices, and related methods and systems, are disclosed for use with one or more orthodontic elastic members. The disclosed methods may comprise determining the geometries for a pair of orthodontic aligners for use as part of an orthodontic treatment plan. The geometries for the pair of orthodontic aligners may include an upper aligner with a first marking and a lower aligner with a second marking. The first marking may correspond to a position of a first hook, and the second marking may correspond to a position of a second hook. The first hook and the second hook may be configured to engage with an orthodontic elastic member so as to react a force to, for example, generate orthodontic forces on the patient's teeth.

Systems and methods for fabrication of orthodontic aligners

Orthodontic positioning devices, and related methods and systems, are disclosed for use with one or more orthodontic elastic members. The disclosed devices may comprise a pair of orthodontic aligners for use as part of an orthodontic treatment plan. The pair of orthodontic aligners may include an upper aligner with a first integrally formed hook and a lower aligner with a second integrally formed hook. The first integrally formed hook and the second integrally formed hook may be configured to engage with an orthodontic elastic member so as to react a force to, for example, generate orthodontic forces on the patient's teeth. Each of the first integrally formed hook and the second integrally formed hook may extend buccally from the upper aligner and the lower aligner, respectively.

Protruding aligner hooks

Systems for volume manufacturing of items are provided. In some embodiments, a fabrication system is configured to retrieve a fabrication data package including manufacturing data. The system can verify the manufacturing data of the fabrication data package, and transmit the fabrication data package to at least one fabrication terminal configured to perform at least one fabrication process in accordance with the manufacturing data of the fabrication data package. If a predefined fabrication processing time period has not expired, the system can determine a process load associated with at least one additional fabrication data package, and repeating the above processes for the at least one additional fabrication data package, if the process load of the at least one additional fabrication data package is less than a predetermined process load of the fabrication system. If the predefined fabrication processing time period has expired, the system can generate a status report.

Systems for volume manufacturing of items

The current document is directed to methods and systems for monitoring a dental patient's progress during a course of treatment. A three-dimensional model of the expected positions of the patient's teeth can be projected, in time, from a three-dimensional model of the patient's teeth prepared prior to beginning the treatment. A digital camera is used to take one or more two-dimensional photographs of the patient's teeth, which are input to a monitoring system. The monitoring system determines virtual-camera parameters for each two-dimensional input image with respect to the time-projected three-dimensional model, uses the determined virtual-camera parameters to generate two-dimensional images from the three-dimensional model, and then compares each input photograph to the corresponding generated two-dimensional image in order to determine how closely the three-dimensional arrangement of the patient's teeth corresponds to the time-projected three-dimensional arrangement.

Photograph-based assessment of dental treatments and procedures

The present disclosure provides computing device implemented methods, computing device readable media, and systems for adjustment of tooth position in a virtual dental model. Virtual dental modeling can include detecting space and/or collision between posterior teeth of an upper jaw and posterior teeth of a lower jaw in a virtual dental model that has been set in a preliminary target position. An energy function can be defined including the space and/or collision, tooth root movement, and align points. Weights can be assigned for each variable in the energy function. A position of the posterior teeth of the upper jaw and the posterior teeth of the lower jaw can be adjusted in six degrees of freedom to minimize the energy function. The detection, definition, assignment, and adjustment can be repeated until the energy function converges. The weights can be adjusted to reduce the space and/or collision.

Adjustment of tooth position in a virtual dental model

Methods for volume manufacturing of a plurality of unique items are provided. In some embodiments, a method includes: (a) initiating a predefined fabrication processing time period, (b) retrieving a fabrication data package containing manufacturing data, (c) verifying the fabrication data package for accuracy and completeness of the manufacturing data contained therein, and (d) performing at least one fabrication process in accordance with the manufacturing data contained in the fabrication data package. If the predefined fabrication time period has not expired, the method can include repeating (b) through (d). If the predefined fabrication time period has expired, the method can include generating a status report.

Methods for volume manufacturing of items

Growing community of inventors

San Jose, CA, United States of America

Artem Borovinskih