Mane Pratap P, Pawar Renuka, Ganiger Chanamallappa, Phaphe Sandesh
Department of Orthodontics and Dentofacial Orthopedics, KIMSDU, School of Dental Sciences, Karad-415110 Maharashtra, India.
J Contemp Dent Pract. 2012 May 1;13(3):285-8. doi: 10.5005/jp-journals-10024-1138.
The aim of this study was to see the effect of topical fluoride on surface texture on nickel-titanium and copper-nickel-titanium orthodontic archwires.
Preformed rectangular NiTi and CuNiTi wires were immersed in in fluoride solution and artificial saliva (control) for 90 minutes at 37°C. after immersion optical microscope was used to see the fluoride effect on the wire topography.
The acidulated fluoride agents appeared to cause greater corrosive effects as compared to the neutral fluoride agents.
The result suggest that using topical fluoride agents leads to corrosion of surface topography indirectly affecting the mechanical properties of the wire that will lead to prolonged orthodontic treatment.
The use of topical fluoride agents has to be limited in patients with prolonged orthodontic treatment as it causes the corrosion of the NiTi and CuNiTi wires.
本研究旨在观察局部用氟对镍钛及铜镍钛正畸弓丝表面质地的影响。
将预制的矩形镍钛丝和铜镍钛丝于37℃下在氟溶液和人工唾液（对照）中浸泡90分钟。浸泡后，用光学显微镜观察氟对丝材表面形貌的影响。
与中性氟制剂相比，酸化氟制剂似乎会造成更大的腐蚀作用。
结果表明，使用局部用氟制剂会导致表面形貌腐蚀，间接影响弓丝的力学性能，进而导致正畸治疗时间延长。
对于正畸治疗时间较长的患者，局部用氟制剂的使用必须受到限制，因为它会导致镍钛丝和铜镍钛丝的腐蚀。
