Grimsdottir M R, Gjerdet N R, Hensten-Pettersen A
Scandinavian Institute of Dental Materials, University of Oslo, Norway.
Am J Orthod Dentofacial Orthop. 1992 Jun;101(6):525-32. doi: 10.1016/0889-5406(92)70127-V.
The high incidence of nickel allergy and the increasing use of nickel-containing dental biomaterials has been of growing concern. The purpose of this investigation was to analyze different types of alloys used in orthodontics, and to study whether nickel and chromium will be released from these alloys when stored in physiologic saline. Face-bows, brackets, molar bands, and arch wires were analyzed. Most of the different parts in the face-bows, brackets, and molar bands were similar to conventional 18/8 stainless steel. Except the wires, most appliances included a variable amount of silver solder, the greatest in face-bows. After 14 days in 0.9% sodium chloride (NaCl), the largest amount of nickel and chromium were leached out from the face-bows and the least amount from the arch wires. Soldered stainless steel face-bows seemed to be very susceptible to corrosion. The release of nickel seemed to be related to both the composition and the method of manufacture of the appliances, but the release was not proportional to the nickel content.
镍过敏的高发生率以及含镍牙科生物材料使用的增加一直备受关注。本研究的目的是分析正畸中使用的不同类型合金，并研究这些合金在生理盐水中储存时是否会释放镍和铬。对面弓、托槽、磨牙带和弓丝进行了分析。面弓、托槽和磨牙带中的大多数不同部件与传统的18/8不锈钢相似。除了弓丝外，大多数矫治器都含有不同量的银焊料，面弓中银焊料含量最高。在0.9%氯化钠（NaCl）中浸泡14天后，面弓中镍和铬的溶出量最大，弓丝中溶出量最小。焊接不锈钢面弓似乎极易腐蚀。镍的释放似乎与矫治器的成分和制造方法有关，但释放量与镍含量不成正比。
