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首页> 外文期刊>Journal of Laser Applications >Effect of Q-switched pulses exposure on morphology, hydroxyapatite composition, and microhardness properties of human enamel
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Effect of Q-switched pulses exposure on morphology, hydroxyapatite composition, and microhardness properties of human enamel

机译：调Q脉冲暴露对人牙釉质形态，羟基磷灰石组成和显微硬度性能的影响

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摘要

Ablation of healthy human enamel is demonstrated using a 8 ns pulses at wavelength of 1064 nm and 10Hz repetition rate from a Q-switched Nd:YAG laser. The ablation result shows that an enhanced structuring quality in comparison with non-Q-switched pulse exposure. The material removal remains localized in the area of the laser spot with no signs of collateral damage and cracks observed. As a comparison, exposure to longer pulses of 120 μs from non-Q-switched Nd:YAG laser increases the composition of hydroxyapatite as well as microhardness property of enamel, which produces a side effect of surface dehydration and crack. This study suggests that the application of Q-switched Nd:YAG laser as contactless drills in dentistry should be regarded as an alternative to the classical mechanical technique to improve the quality of the tooth treatment.
机译：使用来自Q开关Nd：YAG激光器的1064 nm波长和10Hz重复频率的8 ns脉冲演示了健康人类牙釉质的消融。消融结果表明，与非Q开关脉冲曝光相比，结构质量得到了提高。材料去除仍然局限于激光光斑区域，没有观察到附带损坏和裂纹的迹象。相比之下，非调Q的Nd：YAG激光在120μs的较长脉冲下曝光会增加羟磷灰石的成分以及搪瓷的显微硬度，从而产生表面脱水和龟裂的副作用。这项研究表明，应将调Q的Nd：YAG激光作为牙科用非接触式钻头的应用，应视为传统机械技术的替代方法，以提高牙齿治疗的质量。

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