Heavy Pressure

Card Set Information

Author:
amybarrer
ID:
12843
Filename:
Heavy Pressure
Updated:
2010-04-01 19:15:04
Tags:
Heavy Pressure
Folders:

Description:
Effects of Heavy Pressure on Orthodontic Tooth Movement
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  1. Time: <1 sec
    • Event:
    • -- PDL fluid is incompressible
    • -- Alveolar bone bends
    • -- A piezoelectric signal is generated
  2. Time: 1-2 sec
    • Event:
    • PDL fluid is expressed, tooth moves within the PDL space
  3. Time: 3-5 sec
    • Event:
    • Blood vessels within the PDL occluded on the pressure side
  4. Time: Minutes
    • Event:
    • Blood flow cut off to compressed PDL area
  5. Time: Hours
    • Event:
    • Cell death in compressed PDL area
  6. Time: 3-5 days
    • Event:
    • -- Cell differentiation in adjacent marrow spaces
    • -- Undermining Resporption begins
  7. Time: 7-14 days
    • Event:
    • Undermining resorption removes lamina dura adjacet to compressed PDL --> tooth movement begins

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