Department of Oral and Maxillofacial Science, University of Naples Federico II, Naples, Italy.
Angle Orthod. 2012 Sep;82(5):922-8. doi: 10.2319/100211-620.1. Epub 2012 Feb 15.
To compare the surface roughness of different orthodontic archwires.
Four nickel-titanium wires (Sentalloy(®), Sentalloy(®) High Aesthetic, Titanium Memory ThermaTi Lite(®), and Titanium Memory Esthetic(®)), three β-titanium wires (TMA(®), Colored TMA(®), and Beta Titanium(®)), and one stainless-steel wire (Stainless Steel(®)) were considered for this study. Three samples for each wire were analyzed by atomic force microscopy (AFM). Three-dimensional images were processed using Gwiddion software, and the roughness average (Ra), the root mean square (Rms), and the maximum height (Mh) values of the scanned surface profile were recorded. Statistical analysis was performed by one-way analysis of variance (ANOVA) followed by Tukey's post hoc test (P < .05).
The Ra, Rms, and Mh values were expressed as the mean ± standard deviation. Among as-received archwires, the Stainless Steel (Ra = 36.6 ± 5.8; Rms = 48 ± 7.7; Mh = 328.1 ± 64) archwire was less rough than the others (ANOVA, P < .05). The Sentalloy High Aesthetic was the roughest (Ra = 133.5 ± 10.8; Rms = 165.8 ± 9.8; Mh = 949.6 ± 192.1) of the archwires.
The surface quality of the wires investigated differed significantly. Ion implantation effectively reduced the roughness of TMA. Moreover, Teflon(®)-coated Titanium Memory Esthetic was less rough than was ion-implanted Sentalloy High Aesthetic.
比较不同正畸弓丝的表面粗糙度。
本研究纳入了四种镍钛丝（Sentalloy(®)、Sentalloy(®)高美学、ThermaTi Lite(®)钛记忆、Esthetic(®)钛记忆）、三种β钛丝（TMA(®)、彩色 TMA(®)、Beta 钛(®)）和一种不锈钢丝（Stainless Steel(®)）。对每种弓丝的三个样本进行原子力显微镜（AFM）分析。使用 Gwiddion 软件处理三维图像，记录扫描表面轮廓的粗糙度平均值（Ra）、均方根值（Rms）和最大高度（Mh）值。采用单因素方差分析（ANOVA）后进行 Tukey 事后检验（P <.05）进行统计学分析。
Ra、Rms 和 Mh 值以平均值 ± 标准差表示。在原始弓丝中，不锈钢丝（Ra = 36.6 ± 5.8；Rms = 48 ± 7.7；Mh = 328.1 ± 64）的粗糙度小于其他弓丝（ANOVA，P <.05）。Sentalloy High Aesthetic 是最粗糙的（Ra = 133.5 ± 10.8；Rms = 165.8 ± 9.8；Mh = 949.6 ± 192.1）。
所研究的弓丝表面质量有显著差异。离子注入有效地降低了 TMA 的粗糙度。此外，经氟聚合物（Teflon(®)）涂层的钛记忆 Esthetic 比离子注入的 Sentalloy High Aesthetic 更光滑。
