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Biomechanical model of human lower jawbone

A biomechanical and mandibular technology, applied in teaching models, educational appliances, instruments, etc., can solve problems such as heavy workload, difficult simulation, and separate modeling.

Inactive Publication Date: 2004-09-08
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the mandible is composed of compact and cancellous bone rather than a homogeneous material, this is difficult to simulate on a computer
Although the stress calculation of the mathematical model is very accurate, models of different mandibular shapes, occlusal states, loading conditions, and different pathological states (such as fractures) need to be modeled separately, and the workload is very heavy

Method used

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  • Biomechanical model of human lower jawbone
  • Biomechanical model of human lower jawbone
  • Biomechanical model of human lower jawbone

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Embodiment

[0041] A human mandible biomechanical experimental model of the present invention is shown in the accompanying drawings.

[0042] Mandible 1 of this model adopts real adult dry mandible with teeth.

[0043]It is difficult to obtain test data of mandibular mechanical properties from living specimens, and isolated bone tissue is the main specimen for obtaining data. However, the test is affected by many factors such as specimen strength, gender, age, test environment, and test conditions, and the obtained data are somewhat different. Graing reported that the elastic modulus of the mandible was 13.6GPa. Chen Xinmin et al. used strain electrical measurement technology to measure the tensile properties of bones in three different states along the long axis. Bone modulus of elasticity is 13.97GPa, Poisson's ratio is 0.23. Therefore, we believe that the elastic modulus and Poisson's ratio of dry mandible and fresh mandible are similar, and their shapes are basically the same. Ther...

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Abstract

The present invention relates to the biomechanical model of human lower jawbone in oral cavity masticatory surface surgery, and aims at forming one kind of experimental biomechanical model of human lower jawbone approaching the functional state. The biomechanical model includes lower jawbone, upper jaw model, temporomandibular joint model, occlusion platform, loading myodynamia and loading device. The model can be used in simulating the action of masseter, temporal muscle, musculus pterygoideus internus and musculus pterygoideus externus, and is superior to available simplified model. The biomechanical model of the present invention is accurate, objective and complete in simulating lower jawbone in functional state and is significant for relevant laboratory research and clinical application.

Description

1. Technical field [0001] The invention relates to an experimental model in oral and maxillofacial surgery. In particular, it relates to a biomechanical experimental model of the human mandible in a functional state. 2. Background technology [0002] The mandible is an irregularly shaped movable bone in the lower part of the face. It participates in important physiological functions such as language and mastication, and is the main bearer of masticatory muscle contraction and occlusal load. When the mandible is subjected to external force, it will cause internal stress and self-deformation of the bone. The stress distribution and deformation state of the mandible are affected by factors such as the geometry and mechanical properties of the bone itself, the structure of the temporomandibular joint, the way the muscles are loaded, and the occlusal site. These factors will affect bone remodeling and fracture healing. Therefore, it is very important to establish a biomechanica...

Claims

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Application Information

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IPC IPC(8): G09B23/28
Inventor 田卫东王杭陈孟诗李声伟刘磊
Owner SICHUAN UNIV
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