Related Experiment Video
Updated: Jul 26, 2026
07:09
In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
Published on: March 7, 2014
Posterior occlusal support and bite force influence on the mandibular position.
Takeshi Kozawa1, Yoshimasa Igarashi, Shuichiro Yamashita
1Department of Removable Prosthodontics, Matsumoto Dental University, 1780 Hirooka-Gobara, Shiojiri, Nagano 399-0781, Japan.
Summary
Loss of posterior teeth support increases mandibular (jaw) displacement and decreases bite force. This suggests jaw position is unstable with reduced chewing support.
Area of Science:
- Dental occlusion
- Biomechanics
- Craniomandibular function
Background:
- Posterior occlusal support is crucial for maintaining stable mandibular position.
- Loss of posterior teeth can lead to changes in jaw mechanics and function.
Purpose of the Study:
- To investigate the relationship between the loss of posterior occlusal support and three-dimensional mandibular displacement.
- To assess the impact of reduced occlusal support on maximum bite force.
Main Methods:
- Five subjects requiring restoration of posterior teeth were selected.
- Experimental prostheses were sequentially removed from posterior to anterior.
- Three-dimensional condylar displacement and maximum bite forces were measured.
Main Results:
- Increased absence of posterior occlusal support correlated with increased condylar displacements.
- Maximum bite forces decreased progressively as prostheses were removed posteriorly to anteriorly.
- Condylar position became more easily displaced with lower bite forces.
Conclusions:
- Loss of posterior occlusal support significantly affects mandibular stability and position.
- Reduced occlusal support compromises the jaw's ability to generate and withstand bite forces.
- Maintaining posterior occlusal support is essential for craniomandibular function and stability.
Related Concept Videos
01:21Tooth Anatomy
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 grinding food.
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 grinding food.
01:26Assessment of the Mouth
A thorough mouth assessment, including inspection and palpation of the lips, gums, tongue, tonsils, uvula, and pharynx, is crucial in detecting potential health issues. Diseases ranging from oral cancer to systemic conditions like diabetes could be identified early through careful oral examination. This article provides a detailed guide on conducting a comprehensive mouth assessment.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.