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Titanium alloy orthodontic mini-implants: scanning electron microscopic and metallographic analyses
Paola F P Burmann1, Henrique C Ruschel2, Ivana A Vargas1
1Department of Orthodontics, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil.
Acta Odontologica Latinoamericana : AOL
|May 8, 2015
Summary
This study examined five mini-implant brands, finding variations in design and surface irregularities. These factors may impact the effectiveness of orthodontic anchorage, crucial for successful treatment.
Area of Science:
- Orthodontics
- Biomaterials Science
- Dental Implantology
Background:
- Effective orthodontic anchorage is vital for successful treatment outcomes.
- Mini-implant fractures during placement/removal are linked to design and titanium alloy quality.
Purpose of the Study:
- To evaluate the topography and microstructure of five different mini-implant brands.
- To identify potential design flaws or manufacturing defects influencing implant performance.
Main Methods:
- Scanning electron microscopy (SEM) analyzed implant head, neck, body, and tip topography (n=3/group).
- Light microscopy performed metallographic analysis of longitudinal and cross-sections (n=15/group) per ASTM standards.
- Five brands (Neodent, SIN, Morelli, Conexao, Foresta Dent) were assessed.
Main Results:
- Significant differences in mini-implant design were observed among the brands.
- Surface irregularities were noted on the threaded body and tip of some implants.
- Microstructure revealed a compliant alpha/beta-phase grain structure; no structural defects were detected.
Conclusions:
- Variations in mini-implant design exist across different manufacturers.
- Surface irregularities on implants may affect their stability and effectiveness in providing orthodontic anchorage.
- Further research into design optimization could enhance mini-implant reliability.
