Khalighi Hamid Reza, Anbari Fahimeh, Beygom Taheri Jamileh, Bakhtiari Sedigheh, Namazi Zahra, Pouralibaba Firoz
Assistant Professor, Department of Oral Medicine, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
J Dent Res Dent Clin Dent Prospects. 2010 Summer;4(3):75-8. doi: 10.5681/joddd.2010.019. Epub 2010 Sep 16.
Low-power lasers are a group of lasers with a power less than 250 mW and unlike high-power lasers they have no effect on tissue temperature; they produce light-dependent chemical reactions in tissues. These lasers have analgesic features with their ability to trigger reactions that reduce pain and inflammatory mediators. Low-power lasers can also be used instead of needles in acupuncture to decrease pain. Due to these features they have been used in the treatment of orofacial pain, including tooth hypersensitivity, post-operative flare-ups, mucositis, facial myalgia, temporomandibular joint disorders and neuralgia. In this article we review the effects of low-power lasers and their success rate in different studies. As the name implies (LASER: Light Amplification by the Stimulated Emission of Radiation), laser amplifies light by stimulated and excited radiation; in other words, it is amplification of excited light emission. Such radiation usually has some characteristic features, including mono-chromaticity, coherency, high intensity and polarity. There are various classifications for lasers based on their active material (solid, fluid and gas), wavelength, emission type and power.
低功率激光是一组功率小于250毫瓦的激光，与高功率激光不同，它们对组织温度没有影响；它们在组织中产生光依赖的化学反应。这些激光具有镇痛特性，能够引发减轻疼痛和炎症介质的反应。低功率激光还可用于替代针灸中的针以减轻疼痛。由于这些特性，它们已被用于治疗口腔面部疼痛，包括牙齿过敏、术后炎症、粘膜炎、面部肌痛、颞下颌关节紊乱和神经痛。在本文中，我们回顾了低功率激光的作用及其在不同研究中的成功率。顾名思义（激光：受激辐射光放大），激光通过受激和激发辐射来放大光；换句话说，它是受激发光发射的放大。这种辐射通常具有一些特征，包括单色性、相干性、高强度和极性。根据其活性材料（固体、液体和气体）、波长、发射类型和功率，激光有多种分类。
