Dental scanning device and control method thereof

Abstract

The invention discloses an oral cavity scanning device and a control method thereof. The control method includes: establishing a plurality of reference image data corresponding to each tooth according to the position of the teeth; setting the target scanning range and displaying the corresponding reference image data; scanning the target Within the range, multiple scanned images of each tooth are captured; the corresponding three-dimensional model image is established according to the multiple scanned images, and multiple scanned images and three-dimensional model images are simultaneously displayed; the characteristics of each scanned image and the reference image data are analyzed and compared Click to determine whether the reference image data is missing, and display the completion status of the reference image data according to the missing situation; the user judges whether to end the scanning operation according to the display status of the reference image data. The oral cavity scanning device of the present invention can simultaneously display the image scanning status of each face of the tooth in real time during the scanning process, so that the user can detect scanning defects in real time without being limited by the current viewing angle.

Description

technical field [0001] The present invention relates to the field of oral scanning, in particular to an oral scanning device and a control method thereof. Background technique [0002] Generally speaking, in the process of establishing a three-dimensional dental model image, a user (such as a medical staff, etc.) usually uses a handheld oral scanner (Intraoral scanner, IOS) to optically scan the upper and lower jaw regions in the patient's oral cavity (for example, with a hand-held intraoral scanner, IOS). Digital Light Processing (DLP) projection technology projects a specific pattern of structured light or a scanning method in which a laser light source projects a linear laser beam), so that after image recognition and synthesis through the back-end host, it can be displayed on the screen. Corresponding 3D dental model images for reference in subsequent implant or denture fabrication. [0003] However, for the application of handheld oral scanners, because the front-end i...

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Problems solved by technology

[0003] However, for the application of handheld oral scanners, since the front-end imaging mechanism of the device must cooperate with the limited space in the oral cavity, the field of view (FOV, Field of View) is limited, and a single image can only capture a small corner. The scanner must be moved continuously to stitch one by one to obtain a rough image of the target area

However, during the operation, the screen can only display the 3D tooth mold image status at a specific angle of view. The user must first stop the scanning action to find some tiny holes by switching the angle of view with the mouse or keyboard. Supplementary scan action or re-scanning, therefore, the user must constantly switch between scanning mode / observation mode in order to obtain a complete 3D scanning model

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