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Related Concept Videos

Method of Joints01:30

Method of Joints

The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint.
Since plane truss members are in the same plane, each joint is subjected to a coplanar and concurrent force system. To apply the method of joints, the first step is to...
Method of Joints: Problem Solving I01:30

Method of Joints: Problem Solving I

The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint. Consider a truss structure with two forces of 20 N and 10 N acting at joints C and D, respectively. The method of joints can be used to determine the forces FCB, FDC,...
Method of Joints: Problem Solving II01:30

Method of Joints: Problem Solving II

Consider a truss structure with frictionless joints fixed to a wall and roller support. If a force of 150 N is applied to joint A, the forces in each member of the truss can be determined using the method of joints.

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Normal TMJ bony relationships in centric occlusion.

Journal of dental research·1981
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Arthorgraphy of the temporomandibular joint: review of current status.

Journal of the American Dental Association (1939)·1980
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The maxillary antrolith.

Oral surgery, oral medicine, and oral pathology·1979
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Radiology of maxillofacial gunshot injuries.

Oral surgery, oral medicine, and oral pathology·1979
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Oral radiographic changes in patients with progressive systemic sclerosis (scleroderma).

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Related Experiment Video

Updated: Jun 28, 2026

In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
07:09

In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint

Published on: March 7, 2014

A method for quantitatively determining temporomandibular joint bony relationships.

D D Blaschke, T J Blaschke

    Journal of Dental Research
    |January 1, 1981
    PubMed
    Summary

    A new method quantifies temporomandibular joint (TMJ) condyle position using lateral tomograms and a P/A ratio. This technique accurately and reliably measures the spatial relationship between the mandibular condyle and the temporal bone.

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    Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

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    Last Updated: Jun 28, 2026

    In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
    07:09

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    Published on: March 7, 2014

    A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
    08:07

    A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle

    Published on: January 11, 2018

    Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
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    Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

    Published on: August 22, 2022

    Area of Science:

    • Dentistry
    • Radiology
    • Orthodontics

    Background:

    • Accurate assessment of temporomandibular joint (TMJ) spatial relationships is crucial for diagnosing and treating joint disorders.
    • Current methods for evaluating condyle position may lack precision or reproducibility.

    Purpose of the Study:

    • To introduce and validate a novel quantitative method for assessing the spatial relationship of the mandibular condyle to the temporal component of the TMJ.
    • To evaluate the reproducibility and accuracy of this new measurement technique.

    Main Methods:

    • Utilizing lateral tomograms to measure specific areas of the TMJ space.
    • Calculating the condyle's position along the posteroanterior axis using the ratio of posterior to anterior joint space areas (P/A ratio).
    • Clinical evaluation involving 50 asymptomatic TMJs.

    Main Results:

    • The P/A ratio effectively quantifies condyle position within the TMJ.
    • Statistical analysis confirmed high reproducibility of the measurement method.
    • The method demonstrated high accuracy in assessing joint space areas.

    Conclusions:

    • The developed method provides a reliable and accurate quantitative assessment of TMJ condyle spatial relationships.
    • This technique offers a valuable tool for clinical evaluation and research in TMJ disorders.