Stoyanova-Ivanova Angelina, Petrov Valeri, Martins Jorge N R, Andreeva Laura, Georgiev Velizar
G. Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, 1784 Sofia, Bulgaria.
Faculty of Dental Medicine, Medical University of Sofia, St. G. Sofiiski Blvd., 1431 Sofia, Bulgaria.
Materials (Basel). 2024 May 28;17(11):2603. doi: 10.3390/ma17112603.
The manufacturing of orthodontic archwires made from NiTi alloy has undergone numerous changes from the second half of the last century to modern times. Initially, superelastic-active austenitic NiTi alloys were predominant, followed by thermodynamic-active martensitic NiTi alloys, and, finally, the most recent development was graded thermodynamic alloys. These advancements have been the subject of extensive investigation in numerous studies, as they necessitated a deeper understanding of their properties. Furthermore, it is imperative that we validate the information provided by manufacturers regarding these archwires through independent studies. This review evaluates existing studies on the subject with a specific focus on the Bio-active multi-force NiTi archwire, by examining its mechanical, thermal, and physicochemical properties before and after clinical use. This archwire consists primarily of Ni and Ti, with traces of Fe and Cr, which release graduated, biologically tolerable forces which increase in a front-to-back direction and are affected by the temperature of the environment they are in. The review provides information to practicing orthodontists, facilitating informed decisions regarding the selection and use of Bio-active™ archwires for individual patient treatments.
从上世纪下半叶到现代，由镍钛合金制成的正畸弓丝制造工艺经历了诸多变革。最初，超弹性活性奥氏体镍钛合金占主导地位，随后是热活性马氏体镍钛合金，而最近的发展是梯度热合金。这些进展在众多研究中受到了广泛调查，因为需要更深入地了解它们的性能。此外，我们必须通过独立研究来验证制造商提供的有关这些弓丝的信息。本综述评估了关于该主题的现有研究，特别关注生物活性多力镍钛弓丝，通过检查其临床使用前后的机械、热和物理化学性质。这种弓丝主要由镍和钛组成，含有微量的铁和铬，它们会释放出梯度的、生物可耐受的力，这些力从前向后增加，并受其所处环境温度的影响。本综述为正畸医生提供信息，便于他们在为个体患者治疗选择和使用生物活性™弓丝时做出明智的决策。
