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Know Your Teeth More (Anatomy Of Teeth)

The teeth are the hardest substances in the human body. Lower teeth are located on Mandibular bone and uppers located on Palatine bone of our body.
A normal adult mouth has 32 teeth, which (except for wisdom teeth) have erupted by about age 13.

Functions:

  • Chewing, Mastication
  • Helpers in Speech
Parts (Anatomy):
  • Enamel: The hardest, white outer part of the tooth. Enamel is mostly made of calcium-phosphate, a rock-hard mineral.
  • Dentin: A layer underlying the enamel. It is a hard tissue that contains microscopic tubes. When the enamel is damaged, heat  or cold can enter the tooth through these paths and cause sensitivity or pain.
  • Pulp: The softer, living inner structure of teeth. Blood vessels and nerves run through the pulp of the teeth.
  • Cementum: A layer of connective tissue that binds the roots of the teeth firmly to the gums and jawbone.
  • Periodontal ligament: Tissue that helps hold the teeth tightly against the jaw.
Names Of Your Teeth:
  • Incisors (8 total): The middlemost four teeth on upper and lower jaws.
  • Canines (4 total): The pointed teeth just outside the incisors.
  • Premolars (8 total) teeth between the canines and molars.
  • Molars (8 total): Flat teeth in the rear of the mouth, bed grinding food.
  • Wisdom teeth (3rd molar)(4 total): these teeth erupt at around age 18, but are often removed by surgery to prevent displacements of other teeth.
                                                 
Facts About Your Teeth That You Don't Know:
Teeth Conditions and Problems:
  • Cavities (caries): Bacteria evade removal by brushing and saliva and damage the enamel and deeper structures of teeth. Most cavities occur on molars and premolars.
  • Tooth decay: A general name for disease of the teeth, including cavities.
  • Peridontitis: Inflammation of the deeper structures of the teeth (periodontal ligament, jawbone, and cementum). Poor oral hygiene is usually to blame.
  • Gingivitis: Inflammation of the surface portion of the gums, around and between the crowns of the teeth. Plaque and tartar buildup can lead to gingivitis.
  • Plaque: A sticky, colorless film made of bacteria and the substances they secrete. Plaque develops quickly on teeth after eating sugary food, but can be easily brushed off.
  • Tartar: If plaque is not removed, it mixes with minerals to become tartar, a harder substance. Tartar requires professional cleaning for removal.
  • Overbite: The upper teeth protrude significantly over the lower teeth.
  • Underbite: The lower teeth protrude significantly past the upper teeth.
  • Teeth Grinding (bruxism): Stress, anxiety, or sleep disorders can cause teeth grinding, usually during sleep. A dull headache or sore jaw can be symptoms.
  • Tooth sensivity: When one or more teeth become sensitive to hot or cold, it may mean the dentin is exposed.


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