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Heat Treatment's Vital Role: Elevating Orthodontic Mini-Implants for Superior Performance and Longevity-Pilot Study
Tinela Panaite1, Carmen Savin1, Nicolae Daniel Olteanu1
1Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, "Gr. T. Popa" University of Medicine and Pharmacy, 16 Universitatii Str., 700115 Iasi, Romania.
Dentistry Journal
|April 26, 2024
Summary
Heat treatment significantly reduces the elastic modulus of orthodontic mini-implants made from Ti6Al4V alloy and stainless steel 316L. This impacts their biomechanical properties, potentially improving compatibility in orthodontic treatments.
Area of Science:
- Biomaterials Science
- Orthodontic Engineering
- Materials Science
Background:
- Orthodontic mini-implants are crucial for anchorage in orthodontic treatments.
- Ti6Al4V alloy and stainless steel 316L are common materials for these implants.
- Understanding material properties is key to treatment success.
Purpose of the Study:
- To investigate the impact of heat treatment on the elastic modulus of Ti6Al4V and 316L orthodontic mini-implants.
- To observe preliminary trends in mechanical property changes.
- To assess potential implications for biomechanical compatibility.
Main Methods:
- Ten self-drilling mini-implants (2.0 mm x 10 mm) from two manufacturers were tested.
- Implants were divided into Ti6Al4V and 316L material groups.
- Indentation testing was performed using a microtribometer with a Rockwell penetrator.
Main Results:
- Ti6Al4V (103.99 GPa) and 316L (203.20 GPa) showed higher elastic moduli than bone, indicating stiffness.
- Heat treatment reduced the elastic modulus of Ti6Al4V by ~26.14% and 316L by ~24.82%.
- These changes affect the mechanical performance and potential for stress-shielding.
Conclusions:
- Heat treatment significantly alters the elastic modulus of orthodontic mini-implants.
- Optimizing heat treatment is crucial for enhancing biomechanical compatibility.
- Further research is needed to fully evaluate clinical efficacy and refine implant design.
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