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An automatic tooth reconstruction method based on multimodal data

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A Correction to this article was published on 03 February 2021

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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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Acknowledgements

This work was funded by the National Key R&D Program of China (Grant No. 2019YFC17902), the National Natural Science Foundation of China (Grant No. 61672452, 81827804, 61972342, 81970978), and NSFC Guangdong Joint Fund (U1611263). This research was approved by the Medical Ethics Committee of Zhejiang University School of Medicine.

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Authors and Affiliations

  1. State Key Laboratory of CAD & CG, Zhejiang University, Hangzhou, China

    Jiahong Qian, Shijuan Lu, Yuan Gao, Yubo Tao & Hai Lin

  2. Innovation Center for Minimally Invasive Technique and Device, Zhejiang University, Hangzhou, China

    Yubo Tao & Hai Lin

  3. Department of Stomatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China

    Jun Lin

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  1. Jiahong Qian
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  2. Shijuan Lu
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  3. Yuan Gao
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  4. Yubo Tao
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  5. Jun Lin
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  6. Hai Lin
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Correspondence to Jun Lin or Hai Lin.

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The original online version of this article was revised: due to change in Electronic supplementary material.

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Appendix

Appendix

Table 6 shows examples of reconstruction of seven types of teeth using the developed method in this paper.

Table 6 Results of different teeth
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Qian, J., Lu, S., Gao, Y. et al. An automatic tooth reconstruction method based on multimodal data. J Vis 24, 205–221 (2021). https://doi.org/10.1007/s12650-020-00697-0

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