The Effect of Acidulated Phosphate Fluoride on the Loading Force of Gold Plated Arch Wires: An In vitro Study Nsaif Yasir Amer*, Mahmood Abeer Basim College of Dentistry, University of Baghdad, Baghdad, Iraq *Corresponding e-mail: yasiramer89@gmail.com
Online published on 28 February, 2019. Abstract Background Orthodontic treatment may have deleterious effects on the teeth structures. So, patients are advised for regular usage of prophylactic mouthwashes in order to prevent dental caries or periodontal diseases. Aim The aim of this study was to assess and correlate the effects of acidulated phosphate fluoride on the load deflection of conventional, gold-plated nickel titanium and stainless steel arch wires. Materials and methods Total 80 pieces of 0.016 inches round arch wires were received from IOS Company, USA, 40 sections from each type of arch wires. These pieces were divided into 8 groups with 10 cut pieces for each group, half of the groups were examined in wet conditions after being immersed with acidulated phosphate fluoride at temperature about 37°C for approximately 60 minutes, and the other half were tested in dry conditions. By using the Instron universal testing machine, a 3-point bending test was achieved, each specimen were loaded and examined with 0.5 mm, 1.0 mm, 1.5 mm, and 2.0 mm of deflection. ANOVA and post-hoc Tukey's test were used for the data analysis. Results The loading forces of the conventional nickel titanium and stainless steel archwires were significantly reduced after immersion in acidulated phosphate fluoride. Gold-plated nickel titanium and stainless steel archwires have been distinguished of not being lic>long-lasting and, as a result, have a trend to deteriorate or rub off leaving the nickel titanium or stainless steel core exposed. Conclusion Conventional nickel-titanium and stainless steel archwires can be damaged with the use of acidulated phosphate fluoride; while the gold layer was rubbed off from the gold-plated archwires. Hence, the patient and the dentist should carefully use the fluoride-containing products. Top Keywords Load deflection, Fluoride, Gold-plated archwires. Top |