Division of Orthodontics, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT06030, USA.
Am J Orthod Dentofacial Orthop. 2011 Apr;139(4 Suppl):e391-8. doi: 10.1016/j.ajodo.2009.05.030.
There is continuing interest in an esthetic, effective labial archwire. In this study, we evaluated the potential of new, high-strength polyphenylene polymers to fill this need.
Polyphenylene (Primospire, Solvay Advanced Polymers, Alpharetta, Ga) polymer was extruded into wires with clinically relevant round and rectangular cross sections. Tensile, flexure, spring-back, stress-relaxation, and formability characteristics were assessed. Arch forms and secondary shapes were formed.
Smooth wires with consistent cross-sectional dimensions, high spring-back, and good ductility were produced. Forces delivered were generally similar to typical beta-titanium and nickel-titanium wires of somewhat smaller cross sections. The polyphenylene wire did experience stress relaxation for up to 75 hours. The force magnitudes place polyphenylene wires in the category of an alignment or leveling wire. High formability allowed shape bending similar to that associated with stainless steel wires.
Polyphenylene polymers could serve as esthetic orthodontic archwires; further study is warranted.
人们一直对美观、有效的唇弓丝感兴趣。本研究评估了新型高强度聚苯醚聚合物满足这一需求的潜力。
将聚苯醚（Primospire，索尔维先进聚合物，阿尔法利塔，佐治亚州）聚合物挤出成具有临床相关圆形和矩形横截面的线材。评估了拉伸、弯曲、回弹性、应力松弛和可成形性特征。形成了弓丝形状和二次形状。
生产出了具有一致横截面尺寸、高回弹性和良好延展性的光滑线材。所施加的力通常与横截面稍小的典型钛-β和镍钛丝相似。聚苯醚丝在长达 75 小时的时间内经历了应力松弛。力的大小使聚苯醚丝处于定位或整平丝的类别。高可成形性允许与不锈钢丝相关的类似形状弯曲。
聚苯醚聚合物可用作美观的正畸弓丝；需要进一步研究。
