• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Lasers in Dentistry IX Jan 26-27, 2003 San Jose, California, USA >Real-Time Monitoring of the Surface Modification of Root Dentin using Photoacoustic Spectroscopy and Photothermal Radiometry
【24h】

Real-Time Monitoring of the Surface Modification of Root Dentin using Photoacoustic Spectroscopy and Photothermal Radiometry

机译：使用光声光谱和光热辐射实时监测牙本质的表面修饰

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

For non-invasive laser dental treatment, a real-time and non-contact monitoring technique is needed. We have investigated the extent of the surface modification of root dentin using photoacoustic spectroscopy (PAS) and pulsed-photothermal radiometry (PPTR), and have discussed the applicability of each technology to in vivo monitoring during laser treatment. Root dentins were used as specimens. The wavelength, average power density, and exposure time used were varied within the ranges λ = 9.0-10.6 μm, P_(av) = 7-28 W/cm~2, and τ= 0-10 s, respectively. The temporal behaviors of the laser-induced acoustic waves and the temperature rise were measured with an audible microphone and a radiation thermometer, respectively. The extent of the surface modification was evaluated by using information on the ablation depth and the absorption spectrum of the irradiated dentin. The morphological and chemical changes of the irradiated dentin can be made available to assist in dentinal tubule sealing and increased acid resistance for root surface caries therapy. It was found that time-resolved measurements of the acoustic waves and the temperature are useful for a real-time understanding of the extent of the morphological and chemical changes, respectively. We have demonstrated the applicability of an in vivo monitoring technique using PAS and PPTR for root surface caries therapy.
机译：对于无创激光牙科治疗，需要一种实时且非接触式的监测技术。我们已经研究了使用光声光谱法（PAS）和脉冲光热辐射法（PPTR）对牙本质进行表面修饰的程度，并讨论了每种技术在激光治疗过程中对体内监测的适用性。根牙质用作标本。所使用的波长，平均功率密度和曝光时间分别在λ= 9.0-10.6μm，P_（av）= 7-28 W / cm〜2和τ= 0-10 s的范围内变化。分别使用可听麦克风和辐射温度计测量激光感应声波的时间行为和温度升高。通过使用关于烧蚀的牙本质的烧蚀深度和吸收光谱的信息来评估表面改性的程度。可以使受照射的牙本质发生形态和化学变化，以帮助牙本质小管封闭和增加对根表面龋齿治疗的耐酸性。已经发现，声波和温度的时间分辨测量分别用于实时了解形态和化学变化的程度。我们已经证明了使用PAS和PPTR进行牙根表面龋齿治疗的体内监测技术的适用性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号