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A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
Published on: April 8, 2020
External root resorptions and orthodontic forces: correlations and clinical consequences.
1Dept. of Orthodontics, Graz Dental School, Austria. frank.weiland@meduni-graz.at
Progress in Orthodontics
|December 5, 2006
Summary
Orthodontically induced root resorption is an unavoidable side effect of tooth movement. Continuous orthodontic forces may cause more root resorption than discontinuous forces, though force magnitude up to 200cN may not be decisive.
Area of Science:
- Dentistry
- Orthodontics
- Biomedical Engineering
Background:
- Orthodontically induced root resorption (OIRR) is a common adverse effect of orthodontic treatment.
- OIRR results from a sterile inflammatory process triggered by orthodontic forces, similar to bone remodeling.
- Individual patient factors and the characteristics of applied orthodontic forces influence the extent of root resorption.
Purpose of the Study:
- To investigate the role of orthodontic force characteristics in OIRR.
- To compare the effects of continuous versus discontinuous forces on root resorption.
- To evaluate the significance of force magnitude on OIRR.
Main Methods:
- Review of animal and human experimental data on OIRR.
- Analysis of the relationship between force type (continuous vs. discontinuous) and root resorption.
- Examination of the impact of force magnitude on OIRR, specifically up to 200cN.
Main Results:
- Continuous orthodontic forces appear to induce greater root resorption compared to discontinuous forces.
- The magnitude of orthodontic force, up to 200cN, may not be the primary determinant of root resorption.
- OIRR is an inherent biological response to mechanical stimuli during orthodontic tooth movement.
Conclusions:
- The type of orthodontic force (continuous vs. discontinuous) is a significant factor in OIRR.
- While force magnitude is relevant, it might be less critical than force continuity for OIRR up to 200cN.
- Understanding these factors is crucial for minimizing unwanted side effects in orthodontic treatment.
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