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Related Concept Videos

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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.
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The oral cavity, or the mouth, is a complex structure in humans that plays a vital role in our day-to-day lives. Its role is not only in chewing and swallowing food; it also plays a role in speech and facial expressions.
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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
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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...
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The human tongue is a fascinating and complex organ, responsible for various essential functions such as swallowing, speech, and taste. It is also subject to various conditions and diseases. In this article, we delve into the anatomy of the tongue, its roles, and some common conditions that can affect it.
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Updated: Nov 8, 2025

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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Winged nance palatal arch: An adjunct to tooth movement.

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Journal of the Indian Society of Pedodontics and Preventive Dentistry
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A modified Nance palatal arch (NPA) with power arms effectively manages severe dental crowding and enhances molar anchorage during orthodontic treatment.

Keywords:
AnchorageNancepower arm

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Area of Science:

  • Orthodontics
  • Dental Arch Mechanics

Background:

  • Anchorage control is critical in correcting severe dental crowding.
  • The Nance palatal arch (NPA) is a traditional appliance for reinforcing anchorage.

Observation:

  • Conventional NPAs have limitations in managing complex crowding.
  • Modifications exist for functional appliances and molar distalization.

Findings:

  • A novel NPA modification incorporates two power arms.
  • This design simultaneously unravels anterior crowding and augments molar anchorage.

Implications:

  • Offers a simplified, effective solution for challenging orthodontic cases.
  • Enhances treatment efficiency in managing severe dental crowding.
  • Provides robust molar anchorage for predictable outcomes.