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21-09-2020 | Regular Paper | Issue 1/2021

Journal of Visualization 1/2021

An automatic tooth reconstruction method based on multimodal data

Journal:
Journal of Visualization > Issue 1/2021
Authors:
Jiahong Qian, Shijuan Lu, Yuan Gao, Yubo Tao, Jun Lin, Hai Lin
Important notes

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s12650-020-00697-0) contains supplementary material, which is available to authorized users.
The original online version of this article was revised: due to change in Electronic supplementary material.
A correction to this article is available online at https://​doi.​org/​10.​1007/​s12650-020-00731-1.

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Abstract

A complete digital tooth model with both the dental crown and root is of great importance for computer-aided orthodontic treatment. This paper first proposes an automatic segmentation method for complete tooth models with both the crown and reconstructed root based on multimodal data. With the laser-scanned crown mesh and cone-beam computed tomography (CBCT) data of a patient, we propose an improved iterative closest point algorithm and convex hull selection method to obtain the initial contour and slice for segmentation. Based on the initialization, we propose an improved level set method with the shape prior, named LSS, to segment the root of the tooth slice by slice. After segmentation, we reconstruct the root model and replace the crown part with the scanned crown model to solve the occlusal problem. The experiments demonstrate that our method can obtain tooth models from CBCT automatically and accurately.

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