Align Technology, Inc.

Mitra Derakhshan

Artem Borovinskih

Crystal Tjhia

Ken Wu

Eric Yau

John Y Morton

Rene M Sterental

Jason Ramos

Eric E Kuo

Chunhua Li

Allen R Boronkay

Eric P Meyer

Anton Lapshin

Yury A Brailov

Igor Kvasov

Ekaterina Tolstaya

Rahul Khardekar

Sergey Kurchatov

Jun Sato

Yaser Shanjani

Roman A Roschin

Peter Webber

Ryan Kimura

Bruce Cam

Rohit Tanugula

Samuel Blanco

Yuxiang Wang

Boris Likhtman

Artem Kuanbekov

Gleb Krivovyaz

Evgeniy Morozov

Michael Flanagan

Mikhail Nyukhtikov

Olga Likhacheva

Igor Akopov

Angelo Maura

Andrey Maximov

Valery Prokoshev

Olga Matusevich

Maria Shirshova

Alexander Belous

Nikolay Yakovlev

Carina Koppers

Giovanny Garro

Giovanny Garro Acevedo

Carina Morik

Adi Levin

Svetlana Makarenkova

Aleksandr Zhulin

Vladimir Grenaderov

Paul Kimball

Alexander Kulinich

Irina Igorevna Ivanova

Douglas Bukaty

Susanne Reichart

Sophie Acker

Chandra Swaminathan

Irina Ivanova

John Morton

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 system for correcting malocclusions may include a maxillary appliance having tooth receiving cavities shaped to receive teeth of a maxilla and a first elastic coupling at gingival line of the maxillary appliance. The first elastic coupling may be configured for receiving an elastic. The system may also include mandibular appliance having tooth receiving cavities shaped to receive teeth of a mandible. The system may also include a corrective appliance having a first coupling configured to be coupled to the mandibular appliance at a first location on a first side of incisors of a patient and a second coupling configured to be coupled to the mandibular appliance on a second side of the incisors, and having an arm extending from the corrective appliance towards the gingival line of the maxillary appliance and being shaped to receive the elastic.

Orthodontic appliance systems for correcting malocclusions

Apparatuses and methods for improving a patient's buccal corridor, including developing treatment plans and/or appliances to improve and enhance buccal corridor. Also described herein are methods of treating a patient's teeth to enhance the patient's buccal corridor.

Buccal corridor assessment and computation

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.

Methods and devices for jaw repositioning

Method of manufacturing a series of aligners for an orthodontic and/or dental treatment of a patient's teeth. In particular, described herein are methods of manufacturing a series of aligners that includes displaying images of the patient's teeth at the final stages for a subset of the treatment plans from the array of treatment plans in a manner that allows the user to select between the different treatment plans in order to select a treatment plan for fabrication.

Methods of manufacturing dental aligners

Orthodontic and/or dental treatment planning methods and apparatuses. In particular, described herein are methods of generating a plurality of orthodontic treatment plans digitally using a hierarchy of bounding boxes enclosing the plurality of 3D shapes to avoid collisions during treatment.

Treatment plan generation using collision detection by shape filling

A set of primer appliances and a set of treatment appliances to be worn by a subject are provided. The primer appliances are first worn to prepare the local environment of the teeth for further repositioning of the teeth by the treatment appliances. The primer appliances may apply compression or force to one or more support structures of the teeth, in a direction favorable for inducing a biological response of the one or more support structures that prepares the teeth for repositioning, for example by relaxing the tissue of the one or more support structures of the teeth. The primer appliances may cause minimal or no repositioning of the teeth. The treatment appliances are worn to reposition the teeth from an initial position to an end position of a treatment stage. The primer appliances can improve the efficiency and accuracy of tooth movement by the treatment appliances.

Systems and methods for induction of biological response in support structures of the teeth and repositioning thereof

Polymeric shell appliances are provided in which the polymeric shell appliances are configured to provide one or more activation forces to facilitate tooth movement. In many embodiments, the activation forces are arranged to provide force in a direction opposite to an intended direction of tooth movement. The polymeric shell appliances may comprise one or more tooth receiving cavities, in which each of the plurality of tooth receiving cavities is shaped and arranged to provide a counter moment of each of the plurality of teeth.

Method to modify aligner by modifying tooth position

A comparative orthodontic treatment planning tool that can provide multiple treatment plan options based on a single initial tooth data set. A user can use the treatment planning tool to select a treatment plan based on factors, including cost, treatment duration, treatment complexity, and material or feature selection. Tooth arrangements at different treatment stages can be compared. In some cases, a tooth arrangement at one treatment stage can be superimposed over a tooth arrangement at a different treatment stage or over a tooth arrangement from a different treatment plan.

Comparative orthodontic treatment planning tool

A system for correcting class III malocclusions is disclosed. The system may include a maxilla appliance having tooth receiving cavities shaped to receive teeth of the maxilla and a first coupling for receiving an elastic. The system may also include a mandibular appliance having tooth receiving cavities shaped to receive teeth of the mandible. In some embodiments, the system includes a class III corrective appliance having a first mount shaped to engage with the mandibular arch of the patient and having a second coupling shaped to receive the elastic.

Systems and methods for correcting malocclusions of teeth

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 method, computing device readable medium, and devices for dental appliances with repositioning jaw elements. An example of a method can include identifying a misaligned jaw of a patient from a virtual image of the patient's jaw, and providing a treatment plan for the patient including a virtual model of a dental appliance having a first shell and a second shell configured to reposition at least one tooth of the patient. The virtual model of the dental appliance including repositioning jaw elements on the first shell and the second shell configured to move a position of the misaligned jaw of the patient.

Dental appliance with repositioning jaw elements

The present disclosure provides method, computing device readable medium, and devices for dental appliances with repositioning jaw elements. An example of a method can include identifying a misaligned jaw of a patient from a virtual image of the patient's jaw, providing a treatment plan for the patient including a virtual model of a dental appliance having a first shell and a second shell configured to reposition at least one tooth of the patient, and adjusting the position of the repositioning jaw elements on the first shell and the second shell to comply with a number of constraints. The virtual model of the dental appliance including repositioning jaw elements on the first shell and the second shell configured to move a position of the misaligned jaw of the patient.

Growing community of inventors

Herndon, VA, United States of America

Mitra Derakhshan