• Nozha Mahmoud Sawan and GassemAfnan A BenAABAfnan A Ben Gassem, BDS, M.Clin Dent, M.Ortho RCS, FHEA, Ph.D. Associate Professor, Department of Preventive Dentistry, College of Dentistry, Taibah University, Almadinah Amunawwara 42353, Saudi Arabia..
• Nozha Mahmoud Sawan, BDS, M.Ed, MDS, Dip (ABO), Associate Professor, Department of Preventive Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia.
• Pak J Med Sci. 2024 Oct 1; 40 (9): 209020952090-2095.

ObjectiveThis laboratory study aimed to evaluate the effect of different mouthwash solutions on the surface and mechanical properties of NiTi arch wire.MethodsThis experimental study was conducted at the Department of Preventive Dental Sciences, College of Dentistry, Princess Nourah bint Abdulrahman University, Saudi Arabia from September 2023 to November 2023. A 30 mm NiTi wires in length with 0.017 × 0.022" in dimensions were selected and equally divided into four groups: Control (G0) group wires were immersed in distilled water (DW); G1 wires were immersed in antiseptic mouthwash; G2 wires were immersed in fluoridated mouthwash; and G3 wires were immersed in therapeutic mouthwash. Surface morphology, nanohardness, and flexural modulus were evaluated at 24-hours, four weeks, and eight weeks' time points. Data were statistically analyzed using a two-way analysis of variance (P<0.05).ResultsThe arch wires immersed in DW showed insignificant effects on surface roughness, nanohardness, and flexural modulus at different time points. However, all the experimental groups showed a significant effect of time and immersion solutions on the said properties (P<0.05). At the end of eight weeks, G3 showed the highest surface roughness (0.346 ± 0.032 µm) and the lowest nanohardness (1.350 ± 0.412 GPa) and flexural modulus (3.960 ± 0.140 MPa) compared to other study groups.ConclusionsThe efficiency of tooth realignment could be influenced by the detrimental influence of fluoride and hydrogen peroxide mouthwash solutions on superelastic NiTi arch wires.Copyright: © Pakistan Journal of Medical Sciences.

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