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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

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 grinding food.
Teeth01:15

Teeth

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 and...
Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...

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Related Experiment Video

Updated: Jun 15, 2026

Meal Duration as a Measure of Orofacial Nociceptive Responses in Rodents
09:05

Meal Duration as a Measure of Orofacial Nociceptive Responses in Rodents

Published on: January 10, 2014

Elusive dental pain.

Stanley Markman1, Junad Khan, Jennifer Howard

  • 1Department of Oral Diagnosis, University of Medicine and Dentistry of New Jersey, Newark, NJ, USA.

General Dentistry
|March 19, 2010
PubMed
Summary
This summary is machine-generated.

Referred dental pain can mislead diagnosis, causing ineffective treatments. Understanding neural pathways of referred pain from teeth and muscles is crucial for accurate dental pain management.

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CO2-Lasertonsillotomy Under Local Anesthesia in Adults
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CO2-Lasertonsillotomy Under Local Anesthesia in Adults

Published on: November 6, 2019

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Last Updated: Jun 15, 2026

Meal Duration as a Measure of Orofacial Nociceptive Responses in Rodents
09:05

Meal Duration as a Measure of Orofacial Nociceptive Responses in Rodents

Published on: January 10, 2014

CO2-Lasertonsillotomy Under Local Anesthesia in Adults
05:07

CO2-Lasertonsillotomy Under Local Anesthesia in Adults

Published on: November 6, 2019

Area of Science:

  • Neurology
  • Dentistry
  • Pain Management

Background:

  • Dental pain is a common patient complaint.
  • Pain can be perceived in locations distant from its origin, complicating diagnosis.
  • Current dental treatments may fail due to misidentification of pain source.

Purpose of the Study:

  • To elucidate the neural mechanisms underlying referred pain in dentistry.
  • To explain how pain from one tooth can be felt in another.
  • To describe the neural pathways for muscle-to-tooth referred pain.

Main Methods:

  • Review of neuroanatomical pathways involved in pain signaling.
  • Discussion of sensory innervation of dental structures and masticatory muscles.
  • Analysis of clinical presentations of referred dental pain.

Main Results:

  • Identified specific neural circuits responsible for referred pain between opposing teeth.
  • Detailed the convergence of sensory inputs from teeth and muscles onto common neural pathways.
  • Highlighted the role of trigeminal nerve pathways in referred pain phenomena.

Conclusions:

  • Accurate diagnosis of dental pain requires understanding referred pain mechanisms.
  • Knowledge of referred pain pathways can improve treatment efficacy.
  • Further research into neural plasticity may offer new therapeutic targets for dental pain.