embryology

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Author:
sthomp88
ID:
50773
Filename:
embryology
Updated:
2010-12-06 02:02:24
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Chapter fourteen alveolar bone
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periodontium 1
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  1. the bone that directly surrounds and supports the teeth
    alveolar bone
  2. What does the alveolar bone start out as?
    the dental sac
  3. alveolar bone is__________% mineralized
    60
  4. true or false. Alveolar bone has sharpey's fibers that embed in the bone to anchor the teeth
    true
  5. the bone beneath the alveolar bone, it forms the body of the mandible and maxilla
    basal bone
  6. the individual tooth socket (without a tooth)
    alveolus
  7. compact bone that lines each alveolus
    alveolar bone proper
  8. What is the alveolar bone proper called when you are looking at in on a radiograph?
    lamina dura
  9. What is the lamina dura called when you are looking at it for real, and not on a radiograph?
    alveolar bone proper
  10. the most cervical (or highest) rim of the bone
    alveolar crest
  11. Where should the alveolar crest be in relation to the CEJ?
    1-2mm apical of the CEJ
  12. compact bone that makes up the facial and lingual walls of the bone
    cortical bone
  13. cancellous bone that fills the space between the compact bone (a lace-like pattern)
    trabecular bone
  14. the bone between each tooth - seen on PA x-rays
    interdental septum
  15. the bone between the roots - seen in PA x-rays
    interradicular septum
  16. What are 4 clinical considerations with alveolar bone?
    • orthodontic movement
    • edentulous patient
    • periodontal disease
    • bone grafts
  17. clinical consideration with alveolar bone, the orthodontic appliances put pressure on the tooth
    orthodontic movement
  18. What is the reason orthodontics works?
    because of osteoclasts and osteoblasts breaking down and rebuilding bone
  19. cells that break down bone
    osteoclasts
  20. cells that rebuild the matrix of the bone (but do not mineralize it)
    osteoblasts
  21. true or false. osteoblasts rebuild the matrix of the bone and mineralize it as well
    false, osteoblasts rebuild the matrix of the bone, but they do not mineralize it
  22. Why is it so easy for the teeth to move back after you've had braces?
    because osteoblasts rebuild the matrix of the bone, but it is not mineralized
  23. In orthodontics, the tooth actually moves through the bone while osteoclasts on the______side______ ______the bone, and osteoblasts___________the bone on the___________side
    • compressed
    • break down
    • rebuild
    • opposite
  24. What will occur if the tooth is moved to quickly in orthodontics?
    root resorption
  25. What will happen when the alveolar bone doesn't have the constant stimulation of chewing and speaking?
    it will start to resorb
  26. alveolar bone resorption is a big problem for____________patients
    edentulous
  27. Are implants or dentures better for the edentulous patient? Why?
    implants, because they maintain the stimulation that the alveolar bone needs better than dentures
  28. What is the 'magic' metal that our body will not reject so it is safe to use for implants?
    titanium
  29. over-response of the immune system that breaks down the bone
    periodontal disease
  30. your body knows that infections from plaque and calculus build up on your teeth can go_____________, so it'd rather get rid of the tooth than die of infection
    systemic
  31. true or false. your body would rather get rid of a tooth that is causing infection than die of that infection
    true
  32. In periodontal disease, your body sends out_____________to break down the bone
    osteoclasts
  33. bone bait, adding extra matrix in the bone
    bone graft
  34. When are bone grafts usually done?
    after extractions when you plan to place an implant
  35. What does adding extra matrix in bone grafts do for osteoblasts?
    gives them a place to go and start secreting osteoid
  36. true or false. there are no nerves in the bone
    true

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