Abstract:
An intraoral 3D scanner includes a probe light source configured to generate a probe light such that the probe light is transmitted towards the dental situation; a camera including an array of sensor elements, the camera being arranged such that the probe light from the dental situation is transmitted to the array of sensor elements, wherein the camera is configured to create images of the dental situation from which a point cloud is generated, and a guiding system configured to guide relative movement of the intraoral 3D scanner towards the dental situation, wherein the camera is part of the guiding system, the camera is configured to record images from which a relative position of the intraoral 3D scanner and the dental situation is determined, such that based on the relative position, the guiding system is configured to provide a positioning signal in the form of a positioning color code.
Abstract:
Disclosed is a computer-implemented method of using a dynamic virtual articulator for simulating occlusion of teeth, when performing computer-aided designing of one or more dental restorations for a patient, where the method includes the steps of: providing the virtual articulator including a virtual three-dimensional model of the upper jaw and a virtual three-dimensional model of the lower jaw resembling the upper jaw and lower jaw, respectively, of the patient's mouth; providing movement of the virtual upper jaw and the virtual lower jaw relative to each other for simulating dynamic occlusion, whereby collisions between teeth in the virtual upper and virtual lower jaw occur; wherein the method further includes: providing that the teeth in the virtual upper jaw and virtual lower jaw are blocked from penetrating each other's virtual surfaces in the collisions.
Abstract:
Disclosed is a method for compensating for motion blur when performing a 3D scanning of at least a part of an object by means of a 3D scanner, where the motion blur occurs because the scanner and the object are moved relative to each other while the scanning is performed, and where the motion blur compensation comprises: —determining whether there is a relative motion between the scanner and the object during the acquisition of the sequence of focus plane images; —if a relative motion is determined, performing a motion compensation based on the determined motion; and —generating a 3D surface from the sequence of focus plane images.
Abstract:
A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
Abstract:
Disclosed in a method, a user interface and a system for use in determining shade of a patient's tooth, wherein a digital 3D representation including shape data and texture data for the tooth is obtained. A tooth shade value for at least one point on the tooth is determined based on the texture data of the corresponding point of the digital 3D representation and on known texture values of one or more reference tooth shade values.
Abstract:
A method for digitally designing a modified dental setup up on a digital 3D dental model representing at least a part of the jaws of a patient includes the steps of obtaining a pre-treatment digital 2D image of at least a part of the patient's teeth, obtaining a digital 3D representation of the at least a part of the patient's set of teeth, obtaining a proposed digital 2D image of a desired dental setup based on the pre-treatment digital 2D image, wherein at least one digital tooth modification has been provided, and transferring the at least one digital tooth modification from the proposed digital 2D image to the digital 3D representation. This provides a method where the practitioner with relative simple means can present the patient with a visualization of an expected outcome of a dental treatment.
Abstract:
There is disclosed a method for manufacturing a denture comprising an artificial gingiva surface, a seating surface facing at least a part of the gingiva surface when placed in the mouth of a patient, at least one tooth receiving hole provided in the artificial gingiva surface and extending through to the seating surface and an artificial tooth arranged in the tooth receiving hole, The method comprises printing an intermediate denture base comprising the artificial gingiva surface, the at least one tooth receiving hole for receiving the artificial tooth, arranging the artificial tooth in the at least one tooth receiving hole, fixing the intermediate denture base in a milling machine, and milling the denture comprising providing the seating surface by removing at least a part of the tooth extending through the tooth receiving hole. This provides an improved manufacturing process of denture.
Abstract:
Disclosed is a method for determining the relative arrangement of patient's jaws in a bite position when the patient's occlusion is not defined by natural teeth alone, where the method comprises a step of obtaining a digital 3D representation comprising both surface data relating to dental tissue in one of the patient's jaws and surface data relating to a scan appliance arranged in relation to the jaw, where the scan appliance is configured for at least partly defining the patient's occlusion.
Abstract:
Disclosed is a method, a system, and a user interface for determining a preferred relative arrangement of digital restoration designs and digital representations of multi-shaded milling blocks for use when manufacturing dental restorations from multi-shaded milling blocks. A preferred first relative arrangement of a first digital restoration design and a digital representation of a first multi-shaded milling block is determined, and therefrom a preferred second relative arrangement of a second digital restoration design and a digital representation of a second multi-shaded milling block is determined.
Abstract:
A method for setting the axis of rotation between a virtual maxillary model and a virtual mandible model to a virtual hinge axis representing the axis of rotation of the mandibular condyles includes the steps of, obtaining at least one 2D photograph of the face of a patient comprising at least one facial feature, obtaining a virtual dental model comprising the virtual maxillary model and the virtual mandible model representing at least a part of the dental situation of the patient, aligning the virtual dental model with the at least one facial feature, determining the virtual hinge axis based on the at least one 2D photograph, and setting the axis of rotation to the virtual hinge axis.