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Related Concept Videos

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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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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Structural Joints: Fibrous Joints01:03

Structural Joints: Fibrous Joints

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Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
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Bone Disorders01:29

Bone Disorders

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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Related Experiment Video

Updated: Oct 23, 2025

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
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[Relationship between temporomandibular disorders and malocclusions].

T Jiang1

  • 1Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

Zhonghua Kou Qiang Yi Xue Za Zhi = Zhonghua Kouqiang Yixue Zazhi = Chinese Journal of Stomatology
|August 18, 2021
PubMed
Summary

Malocclusions have a weak link to temporomandibular disorders (TMD). However, specific occlusal issues and multifactorial influences, including psychological and environmental aspects, can promote TMD development.

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Area of Science:

  • Dentistry
  • Oral and Maxillofacial Surgery
  • Orthodontics

Context:

  • Understanding the relationship between malocclusions and temporomandibular disorders (TMD) has evolved significantly since the 1980s.
  • Current research indicates a multifactorial etiology for TMD, moving away from a singular cause.
  • Clinical diagnosis, treatment approaches, and research directions have been impacted by these evolving perspectives.

Purpose:

  • To review the current understanding of the relationship between malocclusions and TMD.
  • To highlight the multifactorial nature of TMD etiology.
  • To emphasize the role of specific occlusal factors and comprehensive patient factors in TMD development.

Summary:

  • The link between malocclusions and TMD is considered weak, though certain occlusal interferences (e.g., non-working side interference, slide between MIP and RCP, unstable MIP) may act as risk factors.
  • TMD symptom development is influenced by a complex interplay of behavioral, biological, environmental, social, and psychological factors.
  • Iatrogenic occlusal trauma and the patient's psychosocial environment are significant considerations in TMD, necessitating comprehensive treatment strategies.

Impact:

  • Shifts the focus from solely occlusal factors to a broader, multifactorial understanding of TMD.
  • Informs clinical practice by emphasizing the importance of considering patient behavior, environment, and psychology.
  • Guides future research towards investigating the complex interactions contributing to TMD.
  • Highlights the need for comprehensive, individualized treatment plans for patients with TMD.