Tooth Anatomy

Aka: Tooth Anatomy, Teeth Anatomy, Tooth, Teeth, Primary Teeth, Primary Dentition, Permanent Teeth, Permanent Dentition

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II. Anatomy: Images

  1. dentalTeethAdultGrayBB997.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  2. dentalTeethRootsGrayBB999.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  3. dentalTeethRootsGrayBB1001.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  4. dentalTeethGrayBB1002.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  5. dentalTeethGrayBB1003.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  6. dentalTeethGrayBB1004.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  7. dentalToothXsGrayBB1006.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  8. dentalToothLateralXsGrayBB1007.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  9. dentalToothMicroGrayBB1008.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  10. dentalToothMicroGrayBB1011.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

III. Anatomy: Dentition

  1. Gingiva (adjacent to necks of teeth)
  2. Primary Teeth: 20 Milk teeth or baby teeth in children (erupt between 6 months and 2 years old)
    1. See Teething
    2. Primary Teeth are typically lost at age 6-7 years (anterior to posterior, bottom then top)
    3. Medial (central) incisor
    4. Lateral incisor
    5. Canine (cuspid)
    6. Premolars (Bicuspids): two
  3. Permanent Teeth: 32 in the adult mouth (typically from age 6 to 18 years old)
    1. Medial (central) incisor
    2. Lateral incisor
    3. Canine (cuspid)
    4. Premolars (Bicuspids): two
    5. First Molar (6 year molar)
    6. Second Molar (12 year molar)
    7. Third Molar (Wisdom Tooth)

IV. Anatomy: Tooth layers

  1. Tooth Crown (above the Gingival margin)
    1. Inner layer: Dental Pulp chamber (vessels and nerves pass via pulp canal and apical foramen)
    2. Middle layer: Dentin (core)
    3. Outer layer: Enamel (hard and mineralized)
  2. Tooth Root (below the Gingival margin)
    1. Inner layer: Dental Pulp chamber (vessels and nerves)
    2. Middle layer: Dentin
    3. Outer layer: Cementum
  3. Tooth socket
    1. Inner layer: Alveolar Bone
    2. Middle layer: Gingiva
    3. Outer layer: Cementum
  4. Attachment between tooth roots and tooth socket
    1. Periodontal ligament

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