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Related Experiment Video

Updated: Jun 19, 2026

Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
07:16

Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion

Published on: October 20, 2023

Optimal palatal configuration for miniscrew applications.

Luca Lombardo1, Antonio Gracco, Francesco Zampini

  • 1Department of Orthodontics, University of Ferrara, Ferrara, Italy.

The Angle Orthodontist
|October 27, 2009
PubMed
Summary
This summary is machine-generated.

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Palatal bone can effectively support titanium miniscrews during orthodontic treatment. These orthodontic implants can withstand typical forces without causing bone fracture, even without full osseointegration.

Area of Science:

  • Orthodontics
  • Biomaterials Engineering
  • Biomechanics

Background:

  • Titanium miniscrews are utilized as orthodontic anchorage.
  • The capacity of palatal bone to support these miniscrews under functional loads is a critical consideration.

Purpose of the Study:

  • To evaluate the hypothesis that palatal bone cannot support titanium miniscrews (11 mm length, 2 mm diameter) under typical orthodontic forces.
  • To assess the stress distribution and bone support capabilities of palatal bone for miniscrew anchorage.

Main Methods:

  • Finite element analysis (FEA) was employed using ANSYS Multiphysics software.
  • The miniscrew-palatal bone system was modeled under conditions of osseointegration and absence thereof.
  • Simulations considered two insertion depths involving one or two cortical bone layers and underlying trabecular bone.

Related Experiment Videos

Last Updated: Jun 19, 2026

Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
07:16

Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion

Published on: October 20, 2023

  • Loads of 240 gf and 480 gf, representative of orthodontic forces, were applied.

    • Main Results:

    • Palatal bone can anchor miniscrews subjected to normal orthodontic forces without exceeding bone fracture stress levels.
    • Osseointegration reduced stress, but anchorage in a second cortical bone layer significantly decreased stress on trabecular bone, enhancing stability.
    • The miniscrew-palatal bone system demonstrated adequate support even without complete osseointegration.

    Conclusions:

    • The hypothesis that palatal bone cannot support titanium miniscrews under normal orthodontic forces is rejected.
    • Miniscrews loaded within the typical orthodontic force range do not induce stress levels leading to bone fracture.
    • Palatal bone provides sufficient support for titanium miniscrews, with deeper cortical engagement improving stability.