Align Technology, Inc.

Eliahou Franklin Nizard

Avi Kopelman

Maayan Moshe

Eric E Kuo

Ofer Saphier

Michael Sabina

Shai Ayal

Doron Malka

Gilad Elbaz

Assaf Weiss

Ido Tishel

Yossef Atiya

Erez Lampert

Arkady Rudnitsky

Shlomi Buganim

Shai Farkash

Jonathan Coslovsky

An apparatus for intraoral scanning comprises an elongate wand comprising a probe at a distal end of the elongate wand, one or more structured light projectors coupled to the elongate wand at a distal end of the elongate wand, the one or more structured light projectors configured to project a light pattern comprising a plurality of structured light features, one or more cameras coupled to the elongate wand at the distal end of the elongate wand, a window through which light exits and enters the probe, wherein the window reflects structured light features of the projected light pattern responsive to exposure of the window to the projected light pattern, and a processor. The processor is configured to run a three-dimensional image reconstruction algorithm based on the projected light pattern and a reflected light pattern returning from an object exposed to the projected light pattern to generate a three-dimensional surface of the object, wherein the reflected structured light features that have been reflected off of the window are excluded from the three-dimensional image reconstruction algorithm.

Reflection suppression for intraoral scanner

Methods and apparatuses for generating and displaying a model of a subject's teeth. Described herein are intraoral scanning methods and apparatuses for generating a three-dimensional model of a subject's intraoral region (e.g., teeth). These methods and apparatuses may be used for identifying and evaluating lesions, caries and cracks in the teeth.

Intraoral scanning apparatus

Described herein are intraoral scanning apparatuses comprising visible light and near-infrared (near-IR) light images from a patient's dentition. These apparatuses may display a 3D model of the patient's dental arch and a plurality of images of the patient's dental arch taken from different angles and positions relative to the patient's dental arch, and may both generate and display a two-dimensional (2D) image based on a relative angle and position between the indicator relative to the 3D model of the patient's dental arch.

Diagnostic intraoral scanning apparatuses

Intraoral scanning systems configured to perform computer-implemented methods for identifying dental features. The methods may include engaging a trained machine learning network to identify one or more dental features in one or more regions of a patient's dentition. Each of the dental features may be present in at least one of multiple records. Each of the records may include multiple images of the patient's dentition and may be taken with a different imaging modality. The confidence score may be determined or adjusted using aD model of the patient's dentition. The confidence score may be determined or adjusted based on the region of the patient's dentition within each record. The methods may include displaying an indicator of each dental feature that has a confidence score that is above a threshold on theD model of the patient's dentition, and modifying the display as a user adjusts the threshold.

Diagnostic intraoral methods and apparatuses

Systems and methods for monitoring a subject's teeth during orthodontic treatment. An input 2D image of the subject's current teeth including a wide angle occlusal view of the subject's upper and/or lower jaw at a current treatment stage can be received. Virtual camera parameters corresponding to the input 2D image can be determined. A rendered 2D image of the subject's teeth can be generated from a 3D model of the subject's upper and/or lower jaw at a planned treatment stage with the virtual camera parameters. Differences between the subject's teeth from the input 2D image and the rendered 2D image using tooth centers can be determined. An indicator indicating the differences can be output.

Tracking orthodontic treatment using teeth images

An apparatus for intraoral scanning includes an elongate handheld wand comprising a probe at a distal end of the handheld wand, one or more light projectors coupled to the handheld wand, and one or more cameras coupled to the handheld wand. Each camera comprises a camera sensor and objective optics comprising one or more lenses. Each camera is configured to focus at an object focal plane that is located between 1 mm and 30 mm from the lens that is farthest from the camera sensor. The apparatus further includes a fluorescent transparent film deposited on a surface selected from the group consisting of: a window of the probe through which light exits and enters the probe, and a transparent surface that is not integral to the probe.

Reflection suppression using fluorescence

Intraoral scanning systems for displaying 3D models of a patient's dental arch and near-IR images from the dental arch. These systems may include a wand with one or more image sensors and processors for processing the 3D models and near-IR information. The 3D models may include surface (e.g., color) information and the near-IR images may include information on internal structures, including enamel and dentin.

Intraoral scanning systems

System for scanning a subject's teeth. Described herein are intraoral scanning apparatuses for generating a three-dimensional model of a subject's intraoral region (e.g., teeth). These apparatuses may be used for identifying and evaluating lesions, caries and cracks in the teeth.

Methods and apparatuses for taking, using and displaying three-dimensional (3D) volumetric models of a patient's dental arch. A 3D volumetric model may include surface (e.g., color) information as well as information on internal structure, such as near-infrared (near-IR) transparency values for internal structures including enamel and dentin.

Methods and apparatuses for forming a model of a subject's teeth

Methods and apparatuses for generating a model of a subject's teeth. Described herein are intraoral scanning methods and apparatuses for generating a three-dimensional model of a subject's intraoral region (e.g., teeth) including both surface features and internal features. These methods and apparatuses may be used for identifying and evaluating lesions, caries and cracks in the teeth. Any of these methods and apparatuses may use minimum scattering coefficients and/or segmentation to form a volumetric model of the teeth.

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Jerusalem, Israel

Eliahou Franklin Nizard