Al-Dulaimi Fahad K, Albelasy Nehal F, Mohammad Mohammad H, Hafez Ahmed M
Department of Orthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Phone: +20 1555720610, e-mail:
Department of Orthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
J Contemp Dent Pract. 2025 Feb 1;26(2):137-143. doi: 10.5005/jp-journals-10024-3825.
This study evaluated the static frictional resistance of different self-ligating brackets (SLBs) and a conventional stainless steel (SS) bracket with two different archwire alloys during sliding mechanics.
A total of 96 maxillary canine brackets were divided into four groups (24 Mini Diamond conventional SS brackets, 24 Damon Q2 metal passive SLBs, 24 Empower 2 metal active SLBs, and 24 Damon Clear 2 ceramic passive SLBs). These were tested with SS and titanium-molybdenum alloy (TMA) archwires, each measuring 0.019 × 0.025 in. The frictional resistances were measured using a Universal Testing Machine as the brackets were drawn vertically along the straight segments of the archwire. A two-way analysis of variance (ANOVA), a one-way ANOVA with a Tukey test, and a Student -test were used for statistical analysis.
The lowest mean of static frictional resistance was observed in two passive bracket groups, followed by active group and conventional group. Significant differences were found between bracket groups with SS and TMA archwires ( < 0.001), except between two passive groups, where no significant differences were found (SS: = 0.193, TMA: = 0.415). Among the archwires, the TMA had significantly higher static frictional resistance than SS with Mini Diamond ( < 0.001) and Empower 2 ( < 0.001), while there were no significant differences in frictional resistance between the SS and TMA archwires with Damon Q2 ( = 0.145) and Damon Clear2 ( = 0.470).
The selection of bracket systems and wire material significantly influences the frictional resistances in sliding mechanics. When TMA archwires are used for sliding mechanics, passive appliances can minimize frictional resistances.
The frictional resistances at the bracket-archwire-ligation connection significantly influence orthodontic tooth movement, which in turn affects treatment time. This study assesses the frictional resistances of different SLBs and conventional brackets with different archwires, which allows orthodontists to select the most effective bracket/archwire combination for minimizing frictional resistances. How to cite this article: Al-Dulaimi FK, Albelasy NF, Mohammad MH, Evaluation of Frictional Resistance in Different Bracket Systems with Different Orthodontic Archwires: An Study. J Contemp Dent Pract 2025;26(2):137-143.
本研究评估了在滑动力学过程中，不同自锁托槽（SLB）以及一种传统不锈钢（SS）托槽与两种不同弓丝合金之间的静摩擦阻力。
总共96个上颌尖牙托槽被分为四组（24个Mini Diamond传统SS托槽、24个Damon Q2金属被动自锁托槽、24个Empower 2金属主动自锁托槽以及24个Damon Clear 2陶瓷被动自锁托槽）。使用尺寸均为0.019×0.025英寸的SS弓丝和钛钼合金（TMA）弓丝对这些托槽进行测试。当托槽沿弓丝的直线段垂直拉动时，使用万能材料试验机测量摩擦阻力。采用双向方差分析（ANOVA）、带有Tukey检验的单向ANOVA以及Student -检验进行统计分析。
在两个被动托槽组中观察到最低的平均静摩擦阻力，其次是主动组和传统组。使用SS弓丝和TMA弓丝的托槽组之间存在显著差异（P<0.001），但两个被动组之间未发现显著差异（SS：P = 0.193，TMA：P = 0.415）。在弓丝中，对于Mini Diamond（P<0.001）和Empower 2（P<0.001）托槽，TMA的静摩擦阻力显著高于SS，而对于Damon Q2（P = 0.145）和Damon Clear2（P = 0.470）托槽，SS弓丝和TMA弓丝之间的摩擦阻力没有显著差异。
托槽系统和弓丝材料的选择对滑动力学中的摩擦阻力有显著影响。当使用TMA弓丝进行滑动力学时，被动矫治器可使摩擦阻力最小化。
托槽 - 弓丝结扎连接处的摩擦阻力显著影响正畸牙齿移动，进而影响治疗时间。本研究评估了不同自锁托槽和传统托槽与不同弓丝之间的摩擦阻力，这使正畸医生能够选择最有效的托槽/弓丝组合以最小化摩擦阻力。如何引用本文：Al - Dulaimi FK，Albelasy NF，Mohammad MH，不同正畸弓丝在不同托槽系统中的摩擦阻力评估：一项研究。《当代牙科实践杂志》2025；26（2）：137 - 143。
