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2017 Annual Session Conference


AS17B45A - Biomechanics of Root Resorption: PDL Necrosis, Occlusal Trauma and Root Flexure


Apr 24, 2017 1:15pm ‐ Apr 24, 2017 1:45pm

Description

Despite a relatively low force to deflection rate for initial archwires, the highest risk for external apical root resorption (EAAR) is during the first 6 months of treatment (initial alignment). Relative to biomechanics, the major risk factors for EARR are genetic predisposition, occlusal trauma, root flexure, PDL inflammation and cell necrosis.

Learning Objectives:

  • Recognize the role of PDL necrosis in the biomechanics of applied loads.
  • Analyze the relationship between occlusal trauma and root flexure.
  • Compare the interactive biomechanics of PDL necrosis, occlusal trauma, and root flexure on the expression of root resorption.

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