VIDEO-ASSISTED MARGIN MARKING FOR DENTAL MODELS

摘要

Tools are described for preparing digital dental models for use in dental restoration production processes, along with associated systems and methods. Dental modeling is improved by supplementing views of three-dimensional models with still images of the modeled subject matter. Video data acquired during a scan of the model provides a source of still images that can be displayed alongside a rendered three-dimensional model, and the two views (model and still image) may be synchronized to provide a common perspective of the model's subject matter. This approach provides useful visual information for disambiguating surface features of the model during processing steps such as marking a margin of a prepared tooth surface for a restoration. Interactive modeling tools may be similarly enhanced. For example, tools for margin marking may synchronize display of margin lines between the still image and the model so that a user can interact with either or both of the visual representations, with changes to a margin reflected in both displays.

主权项

1. A graphical user interface for computer-assisted margin marking on dentition, the interface comprising:
a video control that receives a user selection of one of a plurality of video images as a working image wherein the plurality of images are obtained from a corresponding plurality of poses during a three-dimensional scan; a working area that displays the working image; and a three-dimensional view that displays a three-dimensional perspective rendering of a digital model of the dentition based upon the three-dimensional scan, wherein when a user manipulates one or more points that mark a margin on the dentition in either one of the working area and the three-dimensional view, a corresponding point is responsively rendered in the other one of the working area and the three-dimensional view, wherein when a user selects a video image for display in the working area, the three-dimensional view renders the digital model of the dentition from a same perspective as the selected video image, and wherein when a user selects a perspective in the three-dimensional view, the working area is updated to provide a video image more closely corresponding to the user-selected perspective in the three-dimensional view.