The Influence Of Bone Density On Tooth Movement Biomechanics Carlalberta Verna. Episode 54. IOC 2020

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Farooq Ahmed

Accelerated tooth movement evidence

  • El Angbawi 2015 & Cochrane RV by Fleming 2015 low quality evidence of acceleration of tooth movement


How do teeth move quicker with the Regional Accelerated Phynomenon RAP

  • Tissue remodelling
  • Reduced dentistry of bone
  • = increased bone turnover = increased tooth movement


Healing following Injury

  • Granulation 7 days
  • Callus modelling, remodel, 1-4 months, less time in soft tissues
  • = 4 months to apply biomechanics, as density return to normal


Amount of injury = proportional to the amount of RAP effect


Experiment: Reduced bone dentistry in the direction of tooth movement  increased tooth movement, finite analysis corticotomized bone Vs control



  • Corticotomy = Greater tooth movement
    • M/F ratio lower for tooth movement
    • Tooth movement lasts longer



  • Corticomy should be in the direction of the tooth movement


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1 comment
  • Thanks Farooq, great summary!

    Could you clarify this point in Carlalberta’s abstract for the IOC 2020:

    A Finite Element analysis of tooth movement after corticotomy revealed that translation in corticotomized teeth occurs at a larger M/F ratio compared to normal bone turnover. In order to achieve this, a bigger moment needs to be inserted into the wire.

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