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Ions release Evaluation and Changes in Mini-implant Orthodontic Surface.

Marcelo K Suzuki1, Danielle Ar Martins2, Marília T Costa3

  • 1Department of Orthodontics, Centro Odontologico Saiki Suzuki, Sao Paulo, Brazil, Phone: +551155817241,

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Summary
This summary is machine-generated.

Dental miniscrews showed minor ion release and surface corrosion in artificial saliva, indicating biosafety for in vivo use. Understanding corrosion products is key for toxicological assessment.

Keywords:
Artificial salivaDental implantsImmersionIn vitro techniquesIons Laboratory research.

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Area of Science:

  • Biomaterials Science
  • Dental Materials
  • Corrosion Science

Background:

  • Dental miniscrews are widely used orthodontic anchorage devices.
  • The long-term stability and potential ion release of miniscrew alloys in the oral environment require thorough investigation.
  • Understanding the corrosion behavior is crucial for assessing the biocompatibility and safety of these devices.

Purpose of the Study:

  • To evaluate in vitro the surface changes and ion release from two brands of dental miniscrews after immersion in artificial saliva for 60 and 120 days.
  • To identify corrosion products formed on the miniscrew surfaces.

Main Methods:

  • Two brands of dental miniscrews (SIN and Neodent) were immersed in artificial saliva for 60 and 120 days.
  • Surface morphology was analyzed using scanning electron microscopy (SEM).
  • Ion release and elemental composition of corrosion products were analyzed using energy-dispersive spectroscopy (EDS).

Main Results:

  • SEM analysis revealed rough and uneven surfaces with signs of corrosion on both brands after 120 days.
  • Minimal quantities of silver, chromium, iron, nickel, titanium, and vanadium ions were released.
  • Statistically significant differences in iron ion levels were observed over time for both brands compared to controls.
  • Titanium ion levels significantly decreased after 120 days of storage for both brands.

Conclusions:

  • The dental miniscrews demonstrated corrosion and ion release consistent with biosafety for in vivo applications.
  • Knowledge of the physical/chemical state of corrosion products is vital for the toxicological assessment of metal alloys in dental miniscrews.