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Surface changes of anodic oxidized orthodontic titanium miniscrew.
Sung-Hwan Choi1, Jung-Yul Cha, Uk-Hyon Joo
1Department of Orthodontics, College of Dentistry, Yonsei University, Seoul, Korea.
The Angle Orthodontist
|October 21, 2011
Summary
Anodic oxidized miniscrews maintained improved surface characteristics after self-drilling and loading compared to machined surfaces. This suggests better structural stability for orthodontic miniscrews.
Area of Science:
- Biomaterials Science
- Orthodontic Engineering
- Surface Science
Background:
- Orthodontic miniscrews are crucial for anchorage.
- Surface treatment can influence miniscrew stability.
- Anodic oxidation is a potential surface modification technique.
Purpose of the Study:
- To assess the structural stability of anodic oxidation treatment on miniscrews.
- To evaluate changes in surface characteristics after self-drilling and initial loading.
Main Methods:
- Eight miniscrews (machined vs. anodic oxidized) were placed in beagle dog mandibles.
- Orthodontic force was applied for 12 weeks.
- Surface roughness was analyzed using scanning electron microscopy (SEM) and atomic force microscopy (AFM).
Main Results:
- Anodic oxidized miniscrews showed some smoothing at thread edges near the tip post-procedure.
- No significant changes were observed in thread valleys.
- Surface roughness parameters of thread edges were reduced in used anodic oxidized miniscrews compared to unused ones.
Conclusions:
- Anodic oxidized miniscrews exhibit superior surface characteristics compared to machined surfaces.
- Surface texture changes occur but do not negate the benefits of anodic oxidation.
- This treatment offers improved potential for miniscrew stability in orthodontic applications.
