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Related Concept Videos

Functional Classification of Joints01:09

Functional Classification of Joints

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Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
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Assessment of the Mouth01:26

Assessment of the Mouth

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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.
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Tooth Anatomy01:21

Tooth Anatomy

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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...
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Introduction to Joints00:58

Introduction to Joints

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The adult human body usually has 206 bones, and except for the hyoid bone in the neck, each bone is connected to at least one other bone. Joints are the location where bones come together. Many joints allow for movement between the bones. At these joints, the articulating surfaces of the adjacent bones can move smoothly against each other. However, the bones of other joints may be joined by connective tissue or cartilage. These joints are designed for stability and provide little or no...
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Deglutition01:25

Deglutition

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Swallowing, otherwise known as deglutition, facilitates the transport of food from the mouth to the stomach. It is a multifaceted process that involves both the tongue and the muscles of the throat and esophagus. Saliva and mucus aid in this process, which takes approximately 4 to 8 seconds for semi-solid or solid food and around 1 second for liquids or very soft food.
Swallowing can be divided into three stages: the voluntary phase, the pharyngeal phase, and the esophageal phase. Although the...
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Teeth01:15

Teeth

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The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
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Related Experiment Videos

[Denture mobility of complete dentures during function]

K Miyashita1

  • 1Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University.

Kokubyo Gakkai Zasshi. the Journal of the Stomatological Society, Japan
|June 1, 1997
PubMed
Summary
This summary is machine-generated.

This study developed a 3D motion capture system to measure denture and mandible movement. Upper denture mobility correlated with mandibular closure path, while lower dentures tended to move towards the working side.

Related Experiment Videos

Area of Science:

  • Biomedical Engineering
  • Dental Mechanics
  • Biomechanics

Context:

  • Complete dentures are crucial for oral function and aesthetics.
  • Understanding denture and mandibular movement is essential for improving denture design and stability.
  • Existing methods for measuring denture mobility have limitations.

Purpose:

  • To verify and apply a system for measuring the three-dimensional (3-D) movement of complete dentures and the mandible.
  • To analyze the relationship between denture movements and mandibular closure path during function.
  • To quantify denture mobility with high precision using a 3-D motion capture system.

Summary:

  • A 3-D motion capture system with four infrared cameras was utilized to track the movement of upper and lower complete dentures and the mandible.
  • The system measured the three-dimensional loci of targets on the head, dentures, and mandible, achieving a denture mobility measurement error within 3.5 x 10(-1) mm.
  • Analysis revealed that upper denture mobility correlated with the mandibular closure path, irrespective of the working or non-working side, while lower dentures exhibited a tendency to move towards the working side.

Impact:

  • Provides a validated system for precise measurement of denture and mandibular kinematics.
  • Offers insights into the complex relationship between denture stability and functional jaw movements.
  • Contributes to the development of more stable and functional complete dentures.