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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

1.8K
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...
1.8K

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Related Experiment Video

Updated: Dec 6, 2025

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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3D Analysis of Tooth Movement Using 3D Technology.

Chung How Kau1, David A Cruz Wilma2

  • 1Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, 35294, USA. ckau@uab.edu.

Current Osteoporosis Reports
|October 10, 2020
PubMed
Summary
This summary is machine-generated.

This study found that thicker cortical bone is associated with a slower rate of tooth movement in orthodontic therapy. These findings suggest cortical bone thickness may predict how quickly teeth move during treatment.

Keywords:
3D CBCTDental radiographyPremolar extractionRetrospective analysisTooth movement

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Area of Science:

  • Orthodontics
  • Dental Imaging
  • Craniofacial Anatomy

Background:

  • 3D cone beam computed tomography (CBCT) enhances understanding of cranial anatomical variations.
  • Alveolar bone morphology and remodeling are critical aspects of orthodontic treatment.
  • Individual variations in cortical bone thickness are documented, but its relationship with tooth movement rate is unexplored.

Purpose of the Study:

  • To investigate the association between cortical bone thickness and the rate of orthodontic tooth movement.
  • To determine if cortical bone thickness can serve as a predictive factor for tooth movement velocity.

Main Methods:

  • Twenty-three patients undergoing premolar extraction for orthodontic therapy were included.
  • 3D CBCT images were used to measure cortical bone thickness at various levels apical to the alveolar crest.
  • The rate of tooth movement was quantified using mesiodistal measurements from clinical records.

Main Results:

  • Statistically significant inverse associations were found between cortical bone thickness and tooth movement rate in maxillary quadrants at 2mm, 5mm, and 8mm apical to the alveolar crest.
  • Significant associations were also observed in mandibular quadrants at 5mm and 8mm apical to the alveolar crest.
  • Increased cortical bone thickness correlated with a decreased rate of tooth movement, particularly in the maxilla.

Conclusions:

  • An inverse relationship likely exists between cortical bone thickness and the rate of orthodontic tooth movement in both the maxilla and mandible.
  • Cortical bone thickness shows potential as a predictive biomarker for orthodontic tooth movement velocity.
  • Further research is warranted to fully elucidate this relationship and its clinical implications.