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Hole repairing method and device of three-dimensional crown mesh model

A grid model and crown model technology, applied in the field of oral cavity, can solve the problem of low accuracy of holes and achieve high repair efficiency

Active Publication Date: 2018-10-09
北京正齐口腔医疗技术有限公司
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Problems solved by technology

[0004] In view of this, the hole repair method and device of the three-dimensional crown mesh model provided by the present invention aim to solve the problem of low accuracy in the automatic repair of holes in the three-dimensional crown mesh model in the prior art

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  • Hole repairing method and device of three-dimensional crown mesh model
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  • Hole repairing method and device of three-dimensional crown mesh model

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[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

[0033] The embodiment of the present invention provides a hole repairing method for a three-dimensional crown mesh model, such as figure 1 As shown, the method includes:

[0034] 101. Acquire a specific dimension of each three-dimensional tooth mesh model from multiple sets of three-dimensional tooth mesh models with the same topological structure of the three-dimensional tooth mesh model.

[0035] In general, except for 4...

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Abstract

The invention discloses the hole repairing method and device of a three-dimensional crown mesh model and relates to the oral cavity technology field. In the prior art, the accuracy of the automatic repairing of a three-dimensional crown mesh model hole is low. In the invention, the above problem can be solved. The method comprises the following steps of acquiring the specific dimension of each three-dimensional tooth mesh model from multiple sets of three-dimensional tooth mesh models with a consistent topological structure of the same three-dimensional tooth mesh model; using a maximum posterior estimation method to construct a target three-dimensional tooth mesh model matching with the shape of the three-dimensional scanning crown model to be repaired based on the specific dimension; carrying out deformation from a target three-dimensional crown mesh model intercepted by the target three-dimensional tooth mesh model to a three-dimensional scanning crown model; repairing the three-dimensional scanning crown model according to the point correspondence relation of the deformed target three-dimensional crown mesh model and the three-dimensional scanning crown model; carrying out meshsmoothing on the repaired three-dimensional scanning crown model and acquiring a final result. The method and the device are mainly suitable for the scene of automatically repairing tooth holes.

Description

technical field [0001] The invention relates to the field of oral cavity technology, in particular to a method and device for repairing holes in a three-dimensional crown mesh model. Background technique [0002] With the development of digital medicine, the field of dentistry has gradually entered digitalization. Dentists can use a scanner to scan a three-dimensional tooth mesh model from the patient's mouth, and then use digital technology to perform virtual repair and virtual tooth arrangement on these three-dimensional tooth mesh models. Among them, it is necessary to perform virtual repair on the scanned three-dimensional tooth mesh model mainly because the existing scanning technology causes defects on both sides of the tooth crown scanned from the patient's mouth. [0003] At present, the repairing methods of 3D crown mesh models mainly include repairing methods based on local curvature, repairing methods based on curve fitting, and repairing methods using Poisson eq...

Claims

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Application Information

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IPC IPC(8): G06T17/20A61C5/20
CPCG06T17/20A61C5/20G06T2210/41
Inventor 陈莉王昭
Owner 北京正齐口腔医疗技术有限公司
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