首页> 外文会议>Conference on Lasers in Dentistry Ⅶ Jan 21-22, 2001, San Jose, USA >A new picosecond laser emitting blue light for use in periodontology
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A new picosecond laser emitting blue light for use in periodontology

机译:一种新的皮秒激光发射蓝光用于牙周病

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摘要

Aim of the study was to investigate the impact of a new picosecond laser emitting blue light (wavelength 446 nm, pulse duration 8 ps) on tooth surfaces in order to remove calculus. The radiation may be comfortably transmitted via 25 mu rn diameter fiber optics. The resulting fluence at the tooth was found to be to low for ablation of calculus via nonlinear effects. Higher absorption of the 446 nm radiation by calculus compared to healthy tissues can provide preferential heating and evaporation of the calculus. The surface of thick calculus is irregular rough thus comprising a large interface to the surrounding cooling medium contra acting the preferential heating. In summary the study indicates the possibility of removing flat layers of calculus by thermal effects. Carbonization in healthy tissues is the mayor problem concerning removal of subgingival calculus with thermal effects.
机译:该研究的目的是研究一种新的皮秒激光发射蓝光(波长446 nm,脉冲持续时间8 ps)对牙齿表面的影响,以消除牙石。辐射可以通过直径25微米的光纤舒适地传输。通过非线性效应,发现对结石的消融对牙齿的影响很小。与健康组织相比,牙结石对446 nm辐射的吸收更高,可以优先提供牙结石加热和蒸发。粗牙结石的表面是不规则的粗糙表面,因此与周围的冷却介质形成较大的界面,与优先加热相反。总而言之,该研究表明有可能通过热效应去除结石的平坦层。健康组织中的碳化是涉及去除具有热效应的龈下结石的市长问题。

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