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A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
Published on: April 8, 2020
En masse maxillary dentition distalization with clear aligners using infrazygomatic mini-implants: A finite element
Nicolas Nassar1,2,3, Allahyar Geramy4, Roland Kmeid1,3
1Department of Orthodontics, Saint- Joseph University of Beirut, Beirut, Lebanon.
Korean Journal of Orthodontics
|March 21, 2025
Summary
Infrazygomatic mini-implants effectively move maxillary teeth distally with clear aligners. The 0-mm force arm length showed the most distalization with minimal unwanted tooth movement.
Area of Science:
- Orthodontics
- Biomaterials Engineering
Background:
- Infrazygomatic mini-implants are increasingly used with braces.
- Clear aligner therapy offers a discreet orthodontic treatment option.
Purpose of the Study:
- To evaluate infrazygomatic mini-implants for en masse maxillary distalization using clear aligners.
- To compare the efficacy of different force-application arm lengths (0 mm, 4 mm, 8 mm).
Main Methods:
- A 3D finite element analysis was employed.
- Maxillary dental distalization was simulated using infrazygomatic mini-implants with varying force-application arm lengths.
- Quantified vertical, sagittal, and horizontal displacements.
Main Results:
- Incisor intrusion and labial crown tipping occurred across all arm lengths.
- Posterior teeth distalization was achieved, most effectively with the 0-mm arm length.
- The 0-mm arm length demonstrated minimal tipping and reduced vertical movements.
Conclusions:
- Infrazygomatic mini-implants are effective for targeted tooth movement in clear aligner therapy.
- Results support their use in non-extraction orthodontic treatments.
