• 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 Ⅷ, Jan 20-21, 2002, San Jose, USA >Optical Properties and Color of porcine gingiva
【24h】

Optical Properties and Color of porcine gingiva

机译：猪牙龈的光学性质和颜色

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

Laser interaction with oral tissues is dependent upon the tissues physical properties. Previous studies measured the absorbance coefficient of individual components of the tissues. The purpose of the present study was to determine the reflectance, transmittance and absorbance of the whole tissue: porcine gingiva. Therefore, 2 x 4 mm sections consisting of attached and free gingiva from porcine mandibles, 1.2+-0.2 mm thickness, were measured using a spectrometer for reflectance (R) and transmittance (T), and the absorbance (A) was calculated. In order to fully characterize the optical properties of the soft tissue, the color of porcine gingiva was also measured utilizing the L*a*b* system. The average R, T and A among the specimens were determined for each wavelength (200-2500 nm) and the respective spectral curves determined at 95% confidence level. For the laser emission wavelength frequency-doubled Alexandrite (377nm) the average values were: R=25.8%; T=0.6%; A=73.6%. For the laser emission wavelength Nd:YAG (1064nm) the average values were: R=31%;T=66%; A=3%. For the laser emission wavelength Diode (980nm) the average values were: R=30%; T=58%; A=12%. Color of the gingival tissue measured in reflectance had higher L*, a* and b* values as compared to color measured in transmittance.
机译：激光与口腔组织的相互作用取决于组织的物理性质。先前的研究测量了组织中各个成分的吸收系数。本研究的目的是确定整个组织：猪牙龈的反射率，透射率和吸收率。因此，使用分光计测量由反射率（R）和透射率（T）组成的2×4mm的切片，其由来自猪下颌骨的附着的和游离的牙龈组成，厚度为1.2±0.2mm，并计算出吸收率（A）。为了充分表征软组织的光学特性，还使用L * a * b *系统测量了猪牙龈的颜色。确定每个波长（200-2500 nm）样品中的平均R，T和A，并以95％置信度确定各自的光谱曲线。对于激光发射波长倍增的翠翠石（377nm），平均值为：R = 25.8％； T = 0.6％； A ＝ 73.6％。对于激光发射波长Nd：YAG（1064nm），平均值为：R ＝ 31％； T ＝ 66％；和R ＝ 31％。 A ＝ 3％。对于激光发射波长二极管（980nm），平均值为：R ＝ 30％；和T = 58％； A ＝ 12％。与通过透射率测量的颜色相比，通过反射率测量的牙龈组织的颜色具有更高的L *，a *和b *值。

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