J Clin Pediatr Dent. 2020 Dec 1;44(6):451-458. doi: 10.17796/1053-4625-44.6.10.
The surface roughness of various orthodontic materials could affect biofilm formation and friction. The purpose of this study was to examine the surface roughness and chemical composition of the slots and wings of several ceramic self-ligating brackets.
Four types of ceramic self-ligating brackets were separated into experimental groups (DC, EC, IC, and QK) while a metal self-ligating bracket (EM) was used as the control group. Atomic force microscopy and energy-dispersive x-ray spectroscope were used to examine the surface roughness and chemical composition of each bracket slot and wing.
The control group was made of ferrum and chrome while all the experimental groups were comprised of aluminum and oxide. There was a statistically significant difference in the roughness average (Sa) among the various self-ligating brackets (p< 0.001 in slots and p<0.01 in the wing). The slots in the EC group had the lowest Sa, followed by the DC, IC, control, and QK groups. The wings in the IC group had the lowest Sa, followed by the EC, DC, control, and QK groups.
There is a significant difference in the surface roughness of the slots and wings among several types of ceramic self-ligating brackets.
各种正畸材料的表面粗糙度会影响生物膜的形成和摩擦力。本研究旨在检查几种陶瓷自锁托槽的槽和翼的表面粗糙度和化学成分。
将四种类型的陶瓷自锁托槽分为实验组（DC、EC、IC 和 QK），而金属自锁托槽（EM）作为对照组。原子力显微镜和能谱仪用于检查每个托槽槽和翼的表面粗糙度和化学成分。
对照组由铁和铬制成，而所有实验组均由铝和氧化物组成。各种自锁托槽的粗糙度平均值（Sa）存在显著差异（槽中为 p<0.001，翼中为 p<0.01）。EC 组的槽 Sa 最低，其次是 DC、IC、对照组和 QK 组。IC 组的翼 Sa 最低，其次是 EC、DC、对照组和 QK 组。
几种陶瓷自锁托槽的槽和翼的表面粗糙度存在显著差异。
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