Align Technology Patent Grants

Method and system for designing and producing dental prostheses and appliances

Granted: January 10, 2017
Patent Number: 9539071
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.

Preventing interference between tooth models

Granted: January 3, 2017
Patent Number: 9536020
Systems and methods are disclosed to prevent interference between two physical tooth models in a physical dental arch model by acquiring the coordinates of a plurality of points on the surfaces of each of the two physical tooth models and digitally representing the surfaces of each of the two physical tooth models by a mesh of points in three dimensions using the acquired coordinates. The meshes representing the surfaces of the two physical tooth models intersect at least at one point to…

Apparatus for bagging mass-customized items, such as dental appliances

Granted: December 20, 2016
Patent Number: 9522750
A system for packaging mass-customized items includes a computer system including a database containing item identification information unique to each item; (2) outer container identification apparatus that applies the item identification information received from the database to each outer container in a plurality of outer containers; (3) inner pack identification apparatus that applies the item identification information received from the database to each inner pack in a plurality of…

Sleeve for an intraoral scanner

Granted: December 13, 2016
Patent Number: D774193

Identification of areas of interest during intraoral scans

Granted: December 6, 2016
Patent Number: 9510757
During an intraoral scan session, a processing device receives a first intraoral image of a dental site and identifies a candidate intraoral area of interest from the first intraoral image. The processing device receives a second intraoral image of the dental site and verifies the first candidate intraoral area of interest as an intraoral area of interest based on comparison of the second intraoral image to the first intraoral image. The processing device then provides an indication of…

Combined cart-mounted display and computer for intraoral scanner

Granted: November 15, 2016
Patent Number: D771817

Dental implant positioning

Granted: November 15, 2016
Patent Number: 9492243
Methods, devices, systems, and series of appliances are provided for dental implant positioning. One method for positioning an implant with dental treatment includes determining an implant location based on a virtual model of an optimized dental occlusion, moving one or more teeth using a first number of a series of dental appliances, from a first orientation to a second orientation, the second orientation exposing the implant location, placing an implant at the exposed implant location…

Method and system for providing dynamic orthodontic assessment and treatment profiles

Granted: November 15, 2016
Patent Number: 9492245
Method and system for displaying an orthodontic related image including one or more image segments, selecting one or more movement indicators associated with a corresponding one or more of the image segments, and dynamically displaying a modified orthodontic related image based on the selected one or more movement indicators are provided.

Mounting system that maintains stability of optics as temperature changes

Granted: November 8, 2016
Patent Number: 9491863
An optical system comprises a detector to determine one or more intensities of light impinging on one or more locations of the detector and an optical element to redirect light towards the detector along a detection axis. The detector and optical element are coupled together by three or more substantially flat flexures respectively defining three or more flexure planes parallel to the detection axis.

Combined desktop display and computer for intraoral scanner

Granted: October 11, 2016
Patent Number: D768861

Automatic selection and locking of intraoral images

Granted: September 27, 2016
Patent Number: 9451873
A processing device receives an intraoral image of a first intraoral site and determines an identity of the first intraoral site. The processing device then locks the intraoral image and selects a portion of the intraoral image depicting a portion of the first intraoral site based at least in part on the identity of the first intraoral site. The processing device may then generate a model comprising the first intraoral site based at least in part on the locked intraoral image, wherein…

Apparatus and method for measuring surface topography optically

Granted: September 13, 2016
Patent Number: 9439568
An apparatus is described for determining surface topography of a three-dimensional structure. The apparatus can include a probe and an illumination unit configured to output a plurality of light beams. In many embodiments, the apparatus includes a light focusing assembly. The light focusing assembly can receive and focus each of a plurality of light beams to a respective external focal point. The light focusing assembly can be configured to overlap the plurality of light beams within a…

Interproximal reduction planning

Granted: September 6, 2016
Patent Number: 9433476
The present disclosure includes computing device related, systems, and methods for IPR planning as described herein. One method includes identifying a first tooth and a second tooth in a digital dental model with an overlap in a target final position in a treatment plan and identifying a reference line on each of the first tooth and the second tooth; revising the treatment plan wherein a position of each of the first tooth and the second tooth is determined in which the reference line of…

Automatic placement of precision cuts

Granted: September 6, 2016
Patent Number: 9433477
An orthodontic positioning device and methods for making an orthodontic positioning device including a first patient removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to receive and apply a resilient positioning force to a patient's teeth provided in one of an upper jaw and a lower jaw. The first appliance includes a hook configured to receive an orthodontic elastic band. The orthodontic positioning device also includes a second patient removable…

Systems and methods for fabricating a dental template

Granted: September 6, 2016
Patent Number: 9433479
A dental template to position an object on a patient's tooth includes digitizing the patient's tooth; adding virtual objects to predetermined locations on the digitized tooth; and fabricating the dental template to locate the object on the patient's tooth. The template can be used for etching or for positioning brackets on teeth.

Method for preparing a physical plaster model

Granted: August 30, 2016
Patent Number: 9427916
Provided is a method for creating a physical teeth model. Further, the method includes providing a virtual three dimensional (3D) representation of a patient's dentition that includes at least a region of the teeth that includes a tooth stump on which a crown is to be fitted or a region on to which a bridge is to be fitted; and preparing a physical model of the jaws of a subject from a blank, based on information from said virtual 3D image.

Lens positioning system

Granted: August 30, 2016
Patent Number: 9431887
An actuator includes an inner element coupled to an outer element by a linear-motion bearing that provides a single degree of translational movement of the inner element with respect to the outer element along a longitudinal axis. The inner element includes a permanent magnet and the outer element includes a conductive winding with a first coil wound in first direction around a first pole of the permanent magnet and a second coil wound in a second direction around a second pole of the…

Automatic selection and locking of intraoral images

Granted: August 23, 2016
Patent Number: 9420939
A processing device receives an intraoral image of a first intraoral site and determines an identity of the first intraoral site. The processing device then locks the intraoral image and selects a portion of the intraoral image depicting a portion of the first intraoral site based at least in part on the identity of the first intraoral site. The processing device may then generate a model comprising the first intraoral site based at least in part on the locked intraoral image, wherein…

Adjustment of tooth position in a virtual dental model

Granted: August 16, 2016
Patent Number: 9414897
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,…

Systems and methods for improved engagement between aligners and teeth

Granted: August 9, 2016
Patent Number: 9408675
A system and method for repositioning teeth in a patient jaw includes an attachment bonded to a tooth. The attachment has at least one force receiving component for receiving a force. A polymeric shell repositioning appliance is positioned over at least some of the teeth in the patient jaw. The polymeric shell has at least one force transmitting component for engaging the force receiving component to form a locus of engagement. The locus of engagement transmits the force and moves but is…