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首页> 外文期刊>American Journal of Orthodontics and Dentofacial Orthopedics >Orthodontic bracket bonding with a plasma-arc light and resin-reinforced glass ionomer cement.
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Orthodontic bracket bonding with a plasma-arc light and resin-reinforced glass ionomer cement.

机译：正畸托槽与等离子弧光和树脂增强的玻璃离聚物水泥粘合。

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Developments in light-curing technology have led to the introduction of a plasma-arc light-curing unit that delivers high-intensity output for faster curing. The purposes of this study were to determine the shear bond strengths of light-cured resin-reinforced glass ionomer cement cured with a plasma-arc light-curing unit and to evaluate the durability of the resultant bond strength with thermal cycling. Comparisons were made between light-cured resin-reinforced glass ionomer cement and light-cured composite resin. Two light-curing units were used in this study: a plasma-arc light-curing unit and a conventional light-curing unit. The mean shear bond strengths of light-cured resin-reinforced glass ionomer cement with the plasma-arc and the conventional light-curing units were 20.3 MPa and 26.0 MPa, respectively. An analysis of variance showed no statistically significant differences between the plasma-arc and the conventional light-curing units. Light-cured resin-reinforced glass ionomer cement and light-cured composite resin demonstrated similar bond strengths and exhibited no statistical differences. There was no statistical difference in bond strength between the teeth that were thermal cycled and those that were not. Failure sites for the brackets bonded with light-cured resin-reinforced glass ionomer cement appeared to be predominantly at the bracket-adhesive interface. The SDs of light-cured composite resin were high for both light-curing units. Whereas the coefficients of variation for light-cured resin-reinforced glass ionomer cement ranged from 20% to 30%, those of light-cured composite resin ranged from 40% to 60%. The bond strength of light-cured resin-reinforced glass ionomer cement cured with either a conventional light-curing unit or a plasma-arc light-curing unit surpassed the clinically required threshold. The plasma-arc light-curing unit may be an advantageous alternative to the conventional light-curing unit for orthodontic bracket bonding with both light-cured resin-reinforced glass ionomer cement and light-cured composite resin.
机译：光固化技术的发展导致引入了等离子弧光固化单元，该单元可提供高强度输出，从而加快固化速度。这项研究的目的是确定用等离子弧光固化装置固化的光固化树脂增强玻璃离聚物水泥的剪切粘结强度，并评估所得粘结强度与热循环的耐久性。在光固化树脂增强的玻璃离聚物水泥和光固化复合树脂之间进行了比较。在这项研究中使用了两个光固化单元：等离子弧光固化单元和常规光固化单元。具有等离子弧和常规光固化单元的光固化树脂增强玻璃离聚物水泥的平均剪切粘结强度分别为20.3 MPa和26.0 MPa。方差分析表明，等离子弧和常规光固化单元之间没有统计学上的显着差异。光固化的树脂增强的玻璃离聚物水泥和光固化的复合树脂表现出相似的粘结强度，没有统计学差异。热循环和非热循环的牙齿之间的粘结强度没有统计学差异。用光固化的树脂增强的玻璃离聚物水泥粘结的托槽的失效部位似乎主要出现在托槽-胶粘剂界面处。对于两个光固化单元，光固化复合树脂的SD均较高。光固化树脂增强玻璃离聚物水泥的变异系数为20％至30％，而光固化复合树脂的变异系数为40％至60％。用常规光固化单元或等离子弧光固化单元固化的光固化树脂增强玻璃离聚物水泥的粘结强度超过了临床要求的阈值。等离子体弧光固化单元可以是常规光固化单元的有利替代方案，该常规光固化单元用于使用光固化的树脂增强的玻璃离聚物胶粘剂和光固化的复合树脂进行正畸支架粘结。

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