MECHANICAL PROPERTIES AND SURFACE CHARACTERIZATION OF SS ORTHODONTIC WIRE FOLLOWING FLUORIDATED AND NON- FLUORIDATED TREATMENT
Dr. Vikas Soni, *Dr. Neha Vyas, Dr. Anshul Sharma, Dr. Purvesh Patel, Dr. Jatin Mishra, Dr. Lakshya Sharma
ABSTRACT
Objective: To study the effect of prophylactic fluoride agents on the loading and unloading mechanical properties and surface quality of Stainless Steel orthodontic wires. Methods: SS wires were immersed in either an acidulated fluoride agent, Amine fluoride agent,
Chlorhexidine or Artificial Saliva (control) for 1.5 hours at 370c. After immersion, the loading and unloading elastic modulus and yield strength of the wires were measured using a 3-point bend test. A one-way analysis of variance and Turkey post hoc test were used to analyze the mechanical testing data. Scanning electron microscopy was also used to qualitatively evaluate the wire topography as a function of the fluoride treatments. Results: Unloading mechanical properties of SS wires were significantly decreased (P < .05) after exposure to both fluoride agents. Corrosive changes in surface topography were also observed after exposure to both the Amine and acidulated phosphate fluoride agents. Conclusions: The results suggest that using topical fluoride agents with SS wire could decrease the functional unloading mechanical properties of the wires and potentially contribute to prolonged orthodontic treatment.
Keywords: SS Orthodontic wires, Surface characterization, mechanical properties Chlorhexidine; Fluoride prophylactic agents, Corrosion.
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