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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

2.4K
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
2.4K

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[Three-dimensional data fusion method for tooth crown and root based on curvature continuity algorithm].

Y J Zhao1, Y Liu1, Y C Sun1

  • 1Center of Digital Dentistry, Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

Beijing Da Xue Xue Bao. Yi Xue Ban = Journal of Peking University. Health Sciences
|August 18, 2017
PubMed
Summary
This summary is machine-generated.

This study presents a novel method for fusing 3D optical scans of tooth crowns with cone-beam CT (CBCT) data of tooth roots. The developed technique creates accurate, integrated dental models for improved orthodontic treatment planning.

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Area of Science:

  • Dental Technology
  • Medical Imaging
  • 3D Modeling

Background:

  • Accurate 3D dental models are crucial for orthodontic diagnosis and treatment planning.
  • Integrating optical scans of tooth crowns with cone-beam CT (CBCT) data of tooth roots presents challenges in achieving a natural transition.

Purpose of the Study:

  • To develop and evaluate a 3D data fusion and integration method for optical scanning of tooth crowns and CBCT reconstruction of tooth roots.
  • To achieve a natural, curvature-continuous transition between the fused crown and root models.

Main Methods:

  • Utilized Mimics software for CBCT data reconstruction and Smart Optics dental scanner for optical impressions.
  • Employed Geomagic Studio for 3D registration based on crown shape, establishing an occlusal plane coordinate system.
  • Developed a method to generate the crown-root boundary by offsetting and projecting the crown-gingiva boundary.
  • Applied a curvature continuity filling algorithm for final 3D fusion model generation.

Main Results:

  • Successfully constructed 3D crown and root fusion models for 10 patients with mild dental crowding.
  • Achieved an average subjective evaluation score of 8.6 out of 10 from 10 dental professionals.
  • Demonstrated that the fusion models meet the clinical needs in orthodontics, validating the method's feasibility and efficiency.

Conclusions:

  • The developed 3D data fusion method yields integrated dental models with a natural shape, closely resembling natural teeth.
  • CBCT model calibration could potentially enhance the precision of the final fusion model.
  • Further research is needed to adapt this method for severe dental crowding and micromaxillary deformities.