Biomechanical Analysis in Human Masticatory System

2012 ◽  
Vol 249-250 ◽  
pp. 1294-1300
Author(s):  
Lin Wang
Keyword(s):  
Mathematical Analysis ◽  
Mechanical Analysis ◽  
Biomechanical Analysis ◽  
Clinical Anatomy ◽  
Methodological Foundation ◽  
Human Mastication ◽  
Temporomandibular Joints ◽  
Masticatory System ◽  
Multi Body

The necessary theoretical and methodological foundation is provided by means of which the human mastication process could be studied and reproduced in a digital dynamic way. This paper reviews previous publications and elaborates further mathematical analysis and mechanical analysis of biomechanical functions, explaining the characteristics of human mandible, Temporomandibular joints (TMJs), muscles based on clinical anatomy, and analysing the inter-relationship and inter-reflection between each component of this multi-body assembled organism.

scholarly journals Integracja narządu żucia z obwodowym narządem mowy

2016 ◽  
Author(s):  
Grażyna Śmiech‑Słomkowska
Keyword(s):  
Basic Properties ◽  
Temporomandibular Joints ◽  
Respiratory Systems ◽  
Masticatory System ◽  
Structure And Functions

Definitions of terms masticatory system and vocal organs are used as introduction to analysis of their relations. Articulation involves masticatory and respiratory systems the primary functions of which are different from generation of sounds and particularly speech. However, proper and consistent action of these systems is indispensable for generation of understandable words. The paper presents basic properties of structure and functions of masticatory system at various levels of its development. Particular attention was concentrated on all elements of mascicatory system (lips, dental arches, tongue, palate, and muscles of temporomandibular joints) on shaping mechanisms of speech.

Temporomandibular Joint Imaging

2020 ◽  
pp. 582-697
Author(s):  
Mark Piper, DMD MD
Keyword(s):  
Magnetic Resonance ◽  
Soft Tissue ◽  
Temporomandibular Joint ◽  
Mr Images ◽  
Anatomical Structures ◽  
Temporomandibular Joints ◽  
Key Concepts ◽  
Masticatory System ◽  
The Relationship ◽  
Insight Into

Computerized tomography (CT) and magnetic resonance (MR) imaging of the temporomandibular joint are often not a routine part of a dental patient's pain and clinical evaluation. As a result, the most poorly understood region within the masticatory system is the temporomandibular joint foundation. Unfortunately, patient care and occlusal management are often compromised because of a lack of insight into the relationship between the anatomy of the temporomandibular joints and the occlusion. This chapter's four distinct sections review the key concepts about the temporomandibular joint foundation anatomical structures, detail structurally intact and structurally altered temporomandibular joint anatomy, clarify how structurally altered temporomandibular joints influence occlusal function, and classify the stages of temporomandibular joint structural degeneration. The concept of joint-based malocclusion is explored with numerous temporomandibular joint foundation anomalous software renderings, and sample CT and MR images, which together illustrate in detail how soft tissue and bony abnormalities in a structurally altered temporomandibular joint can create distortions in the occlusion. Lastly, the chapter addresses the specific requirements a clinician must technically master to perform a comprehensive CT or MR examination.

scholarly journals Rigid-flexible coupled dynamics analysis of 3-revolute-prismatic-spherical parallel robot based on multi-software platform

2019 ◽  
Vol 11 (3) ◽  
pp. 168781401982645 ◽  
Author(s):  
Haitao Luo ◽  
Jia Fu ◽  
Lichuang Jiao ◽  
Ning Chen ◽  
Tingke Wu
Keyword(s):  
Computer Technology ◽  
Maximum Stress ◽  
Maximum Error ◽  
Parallel Robot ◽  
Mechanical Analysis ◽  
Response Analysis ◽  
Analysis Method ◽  
Software Platform ◽  
Design And Optimization ◽  
Multi Body

Kinematics and dynamics are the most important and basic tool for robot research. With the help of computer technology and the respective advantages of three kinds of software, a new method of co-simulation of parallel robot based on multi-platform is proposed, and the mechanical model of multi-body system of 3-revolute-prismatic-spherical parallel robot is established. According to the mechanical analysis of the parallel robot, the rigid-flexible coupling analysis method is adopted. The displacement error shows a periodic change with a period of 4.2 s and the maximum error is [Formula: see text]. The dangerous part of the structure is the root of the lower link, and its maximum stress is 202.64 MPa less than the yield strength of the material. The multi-software platform co-simulation improves the accuracy of the dynamic response analysis of the part under dynamic load, and provides an important theoretical basis for the design and optimization of the parallel robot.

scholarly journals Masticatory biomechanics in the rabbit: a multi-body dynamics analysis

2014 ◽  
Vol 11 (99) ◽  
pp. 20140564 ◽  
Author(s):  
Peter J. Watson ◽  
Flora Gröning ◽  
Neil Curtis ◽  
Laura C. Fitton ◽  
Anthony Herrel ◽  
...  
Keyword(s):  
Imaging Techniques ◽  
Three Dimensional ◽  
Muscle Fibres ◽  
Micro Computed Tomography ◽  
Body Dynamics ◽  
Masticatory System ◽  
Muscle Groups ◽  
Muscle Activations ◽  
Multi Body

Multi-body dynamics is a powerful engineering tool which is becoming increasingly popular for the simulation and analysis of skull biomechanics. This paper presents the first application of multi-body dynamics to analyse the biomechanics of the rabbit skull. A model has been constructed through the combination of manual dissection and three-dimensional imaging techniques (magnetic resonance imaging and micro-computed tomography). Individual muscles are represented with multiple layers, thus more accurately modelling muscle fibres with complex lines of action. Model validity was sought through comparing experimentally measured maximum incisor bite forces with those predicted by the model. Simulations of molar biting highlighted the ability of the masticatory system to alter recruitment of two muscle groups, in order to generate shearing or crushing movements. Molar shearing is capable of processing a food bolus in all three orthogonal directions, whereas molar crushing and incisor biting are predominately directed vertically. Simulations also show that the masticatory system is adapted to process foods through several cycles with low muscle activations, presumably in order to prevent rapidly fatiguing fast fibres during repeated chewing cycles. Our study demonstrates the usefulness of a validated multi-body dynamics model for investigating feeding biomechanics in the rabbit, and shows the potential for complementing and eventually reducing in vivo experiments.

scholarly journals ADVANTAGES OF PRE-PROSTHETIC MASTICATORY SYSTEM PREPARATION WITH OCCLUSAL APPLIANCE

2021 ◽  
Vol 27 (2) ◽  
pp. 3731-3735
Author(s):  
Mariana Yankova ◽  
◽  
Desislava Dimitrova ◽  
Todor Peev ◽  
Bozhidar Yordanov ◽  
...  
Keyword(s):  
Muscle Relaxation ◽  
Diagnostic Value ◽  
Scientific Interest ◽  
Dental Tissue ◽  
Tissue Protection ◽  
Temporomandibular Joints ◽  
Hard Dental Tissue ◽  
Condyle Position ◽  
Masticatory System ◽  
A Current

The aim of this literature review is to present the main advantages of pre-prosthetic preparation of the masticatory system with occlusal appliances. The possibilities for attaining muscle relaxation at the achieved centric condyle position in the temporomandibular joints are discussed. The advantages, in terms of hard dental tissue protection, the diagnostic value and the psychoprophylactic effect, are considered. The wide-ranging benefits of the use of occlusal appliances in bruxism- and bruxomania-related craniomandibular dysfunctions are indisputable and represent a current scientific interest.

scholarly journals Mechanical analysis of full-scale accelerated pavement loading facility based on multi-body dynamics

2018 ◽  
Vol 6 (1) ◽  
pp. 528-536
Author(s):  
Zhiguang Guan ◽  
Jinxiang Feng ◽  
Qian Wu ◽  
Peng Zhang
Keyword(s):  
Mechanical Analysis ◽  
Full Scale ◽  
Body Dynamics ◽  
Multi Body

A Review of Head and Neck Clinical Anatomy for the General Dental Practitioner

Dental Update ◽  
2020 ◽  
Vol 47 (1) ◽  
pp. 62-70
Author(s):  
Rana Wali ◽  
Tina Halai ◽  
Sonita Koshal
Keyword(s):  
Clinical Practice ◽  
Head And Neck ◽  
Local Anaesthesia ◽  
Clinical Relevance ◽  
Daily Clinical Practice ◽  
Clinical Anatomy ◽  
Odontogenic Infections ◽  
Temporomandibular Joints ◽  
General Dental Practitioner ◽  
Neck Anatomy

Knowledge of structures of the head and neck is an important aspect of safe and effective daily clinical practice. This article will review the relevant anatomy for the assessment of the temporomandibular joints (TMJs) and associated structures, delivery of local anaesthesia, understanding routes of spread of odontogenic infections and avoidance of anatomical complications in dento-alveolar surgery. CPD/Clinical Relevance: To recap key clinically relevant basics of head and neck anatomy.

Research on Coordinate System Transformation in Flexible Rope FEA

2013 ◽  
Vol 753-755 ◽  
pp. 1785-1789
Author(s):  
Yun Peng Zhao ◽  
Nan Li
Keyword(s):  
Coordinate System ◽  
Direction Cosine ◽  
Euler Angle ◽  
Mechanical Analysis ◽  
Inertial System ◽  
System Transformation ◽  
Finite Rotation ◽  
Element Type ◽  
Multi Body ◽  
The Relationship

This paper focuses on the transform relationships between each element and between elements with inertial system under different attitude coordinate system in the finite element multi-body system mechanical analysis of the flexible rope process. It mainly research the attitude coordinate transformation matrix between the of flexible rope Micro-element and inertial system under the four coordinate system which are the direction cosine coordinates, finite rotation four element coordinates, Euler angle coordinate and Cardan angle coordinates, and the relationship between the connecting base on the element type and inertial reference based.

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