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Updated: Aug 8, 2026
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In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
Published on: March 7, 2014
Posterior and anterior components of force during bite loading
A D Vardimon1, S Beckmann, N Shpack
1Department of Orthodontics, The Maurice and Gabriela Goldschleger, School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel. andyva@post.tau.ac.il
Journal of Biomechanics
|May 16, 2006
Summary
This study reveals that biting forces cause anterior crowding of teeth. A protective mechanism involving posterior forces, force dissipation, and canine guidance counteracts these anterior forces.
Area of Science:
- Dental occlusion
- Biomechanical forces in dentition
Background:
- Late anterior crowding is linked to anterior component of force (ACF) during biting.
- Physiologic mechanisms countering ACF, such as posterior component of force (PCF), are hypothesized.
Purpose of the Study:
- To investigate the simultaneous development and magnitude of ACF and PCF during biting.
- To quantify the progressive decline of ACF from posterior to anterior dentition.
- To identify protective mechanisms against ACF in the anterior dentition.
Main Methods:
- A self-controlled study involving 60 subjects (mean age 27.05±3.9 years).
- ACF and PCF were calculated by measuring changes in mandibular dental contact point tightness from non-biting to biting states.
- Analysis of ACF and PCF magnitudes and their distribution across the dentition.
Main Results:
- Both ACF and PCF developed simultaneously during biting.
- PCF was significantly smaller than ACF (4-7 folds, p<0.001).
- ACF decreased progressively from posterior to anterior dentition (10-20 folds, p<0.001), with the greatest decline at the lateral incisor-canine contact point (63-74%).
Conclusions:
- A protective mechanism involving PCF, progressive ACF dissipation, and canine guidance counteracts the effect of ACF on anterior dentition.
- Understanding these forces is crucial for managing dental crowding and orthodontic treatment planning.
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