Abstract :
Objective: To compare and evaluate the surface roughness and force decay rate of coated aesthetic stainless steel archwires with the non-coated stainless steel maxillary arch wires.
Materials and M ethods: 4 different groups (non coated, epoxy coated, teflon coated, rhodium coated) of maxillary archwires of 0.019” x 0.025” inch dimension were taken for study keeping the non coated SS wire as the control group. 6 samples from each group were evaluated for surface roughness before and after tear drop loop formation using Optical Profilometer and for force decay rate by Universal testing machine at load of 1mm and 2 mm.
Results: The results obtained were analyzed using paired t test followed by one way ANOVA and post hoc comparison was done between the groups.
Conclusions: The study concluded that force decay rate and surface roughness overall was less for the aesthetic coated SS archwires compared to non coated SS archwires, especially teflon coated archwires showed the least surface roughness and force decay rate while epoxy coated SS archwires showed the highest among all.
Keyword :
Aesthetic archwires, Surface Roughness, Load Deflection Rate,