Dr Amjad Liaqat, Dr Fareeha Amdad Warriach, Dr Saira Qamar
Introduction: Currently, more adult patients are seeking orthodontic treatment, and there is an increasing demand for improvement in the esthetic quality of orthodontic appliances. Objectives: The main objective of the study is to analyse the effects of different mouthwashes on the orthodontic Nickel-Titanium wires. Material and methods: This descriptive study was conducted in De'montmorency College of Dentistry, Lahore during June 2019 to January 2020. The data was collected into two groups, one was control group and 2nd was study group. Three different types of mouthwashes were used in this study. Results: The results of the two-way ANOVA showed that the fluoride treatment caused a significant reduction in NiTi wires and a significant increase in the coated wires (P = 0.000). The Aqufresh mouthwash produced a statistically significant increase in the NiTi and coated wires and a significant decrease in the SS wires compared to the control group (P < 0.05). The sensodyne mouthwash significantly increased the value of the NiTi wires and reduced in the SS and coated wires (P < 0.05). Conclusion: It is concluded that all mouthwashes caused a significant decrease in the stiffness of wires. All mouthwashes changed the loading and unloading forces and surface morphology of different wires, which could have an impact on the mechanical properties of these wires during orthodontic treatment.