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Related Concept Videos

The Hyoid Bone01:12

The Hyoid Bone

The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
Muscles of the Anterior Neck01:26

Muscles of the Anterior Neck

The anterior neck muscles are the group of muscles covering the front part of the neck. These muscles are classified into three subgroups. The first one is the superficial muscles, the most visible muscles in the front of the neck. It includes the platysma and sternocleidomastoid. The second group is the suprahyoid muscles, located above the hyoid bone. This group comprises the digastric, mylohyoid, geniohyoid, and stylohyoid. Lastly, the infrahyoid muscles are found below the hyoid bone and...
Cranial Bones: Superior and Posterior View01:14

Cranial Bones: Superior and Posterior View

The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
Classification of Bones01:18

Classification of Bones

The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The long...
Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...

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Updated: May 12, 2026

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
14:13

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Published on: May 6, 2014

Data on hyoid bone position in class I and class III malocclusions.

Yohan Verghese1, Arvind Kumar1, Soghyia Talib Abrahim Al Hamar2

  • 1Department of Orthodontics and Dentofacial Orthopedics, Saveetha Dental College, Chennai, Tamilnadu, India.

Bioinformation
|May 11, 2026
PubMed
Summary

The hyoid bone position differs between Class I and Class III malocclusions. This meta-analysis found the hyoid bone is positioned more superiorly and anteriorly in Class III malocclusion compared to Class I.

Keywords:
Class I malocclusionClass III malocclusionhyoid bonehyoid bone position

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Last Updated: May 12, 2026

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition
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Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition

Published on: February 23, 2024

Area of Science:

  • Dentistry
  • Orthodontics
  • Cephalometrics

Background:

  • Malocclusion, specifically Class I and Class III, involves variations in jaw alignment.
  • The hyoid bone's position is a significant factor in craniofacial morphology and airway patency.
  • Understanding hyoid bone positioning aids in diagnosing and treating specific malocclusion types.

Purpose of the Study:

  • To conduct a meta-analysis investigating the correlation between hyoid bone position and malocclusion types.
  • To compare the hyoid bone's cephalometric position in Class I versus Class III malocclusions.
  • To determine if hyoid bone positioning can be predicted based on malocclusion classification.

Main Methods:

  • A systematic literature search was performed using keywords such as 'hyoid bone', 'Class I', 'Class III', 'hyoid cephalometrics', 'pharyngeal airway', and 'uvulo-glossopharyngeal'.
  • Relevant studies comparing hyoid bone positions in Class I and Class III malocclusions were included.
  • Cephalometric analysis was used to evaluate and compare hyoid bone positions.

Main Results:

  • A definite correlation exists between hyoid bone position and malocclusion classification (Class I vs. Class III).
  • The hyoid bone was found to be positioned more superiorly and anteriorly in individuals with Class III malocclusion.
  • Conversely, individuals with Class I malocclusion exhibited a relatively more inferior and posterior hyoid bone position.

Conclusions:

  • Hyoid bone position is a distinguishing factor between Class I and Class III malocclusions.
  • Cephalometric analysis confirms predictable differences in hyoid bone positioning based on malocclusion type.
  • These findings have implications for orthodontic diagnosis and treatment planning, particularly concerning airway management.