Effects of clinical use and sterilization on surface topography and surface roughness of three commonly used types of orthodontic archwires.
Article
in English
| IMSEAR
| ID: sea-169560
ABSTRACT
Aim:
To evaluate the changes in surface topography and roughness of stainless steel (SS), nickel‑titanium and beta‑titanium (β‑Ti) archwires after clinical use and sterilization. Settings andDesign:
Thirty wires each of SS, nitinol, and β‑Ti (3M Unitek) were tested in as received, as received and autoclaved, and clinically retrieved then autoclaved conditions. Materials andMethods:
A sterilization protocol of 134°C for 18 min was performed using an autoclave. Surface topography of specimens from each subgroup was examined using an environmental scanning electron microscope (ESEM model Quanta 200, The Netherlands) at ×100, ×1000, and ×2500 magnifications. Surface roughness was measured using arithmetic mean roughness (Ra) values obtained from optical profilometric scanning (Taylor Hobson, Leicester, UK). StatisticalAnalysis:
Data were analyzed by one‑way analysis of variance and Tukey’s post‑hoc procedures.Results:
Scanning electron microscope images revealed an increase in surface irregularities in SS and nitinol wires after clinical use. There was a significant increase in Ra values of SS orthodontic wires after intra‑oral exposure (P = 0.0002).Conclusion:
Surface roughness of SS wires increased significantly after clinical use. Autoclave sterilization did not affect considerably on surface characteristics of any archwire.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Type of study:
Practice guideline
/
Prognostic study
Language:
English
Year:
2015
Type:
Article
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