Search

Background: An essential component of orthodontic therapy, orthodontic archwires may operate as surfaces for bacterial adhesion, which might result in issues with oral health. Materials and Methods: This study assessed the bacterial adhesion to three different kinds of orthodontic archwires: beta-titanium (TMA), nickel-titanium (NiTi), and stainless steel (SS). At the conclusion of the clinical usage period, samples of each kind of archwire were gathered and submitted to microbiological investigation in order to determine the quantity of adhering bacterial colonies. Using scanning electron microscopy (SEM), the surface properties of the archwires were evaluated after usage. Results: The three kinds of archwires had significantly different rates of bacterial adhesion, according to the findings. With an average of 1500 ± 50 CFU/mm2, SS archwires showed the highest level of bacterial adhesion, followed by NiTi archwires at 1100 ± 45 CFU/mm2. The least amount of bacteria adhered to TMA archwires, with an average of 800 ± 30 CFU/mm2. According to SEM pictures, the degree of bacterial adhesion was associated with the archwires’ surface roughness, with smoother surfaces showing less bacterial colonization. Conclusion: In comparison with SS and NiTi archwires, the research finds that TMA archwires are linked to the least amount of bacterial adhesion.

Background: Orthodontic archwires undergo various sterilization procedures to ensure they are free of microbial contamination before clinical use. However, the impact of these sterilization methods on the surface roughness of different types of archwires is not well understood. Materials and Methods: In this study, we evaluated the effect of three common sterilization methods (autoclaving, dry heat, and chemical sterilization) on the surface roughness of three types of orthodontic archwires: stainless steel, nickel-titanium, and beta-titanium. A total of 90 archwire samples (30 of each type) were divided into three groups, each subjected to one of the sterilization methods. Surface roughness was measured using a profilometer before and after sterilization. Data were analyzed using ANOVA and post hoc tests to determine significant differences. Results: The results indicated that autoclaving significantly increased the surface roughness of nickel-titanium archwires (mean increase of 0.12 μm, P < 0.05) compared to dry heat and chemical sterilization. Stainless steel archwires showed a moderate increase in surface roughness with autoclaving (mean increase of 0.08 μm, P < 0.05), while beta-titanium archwires exhibited the least change across all sterilization methods (mean increase of 0.03 μm, P > 0.05). Dry heat sterilization had a minimal effect on the surface roughness of all archwire types, whereas chemical sterilization showed a significant increase in roughness for stainless steel archwires (mean increase of 0.10 μm, P < 0.05). Conclusion: Sterilization methods, particularly autoclaving, can adversely affect the surface roughness of orthodontic archwires, potentially impacting clinical performance.