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新型光纤光学相干层析系统在龋齿诊断中的应用
引用本文:孟卓,姚晓天,兰寿锋,姚晖,刘铁根,李燕妮,梁燕,王冠华.新型光纤光学相干层析系统在龋齿诊断中的应用[J].激光生物学报,2010,19(1):120-123,142.
作者姓名:孟卓  姚晓天  兰寿锋  姚晖  刘铁根  李燕妮  梁燕  王冠华
作者单位:1. 天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津,300072
2. 天津市口腔医院中心实验室,天津,300041
基金项目:国家自然科学基金项目 
摘    要:早期龋齿导致牙齿内部脱矿,使得该区域折射率发生变化,从而导致其后向散射系数增加。利用一种新型的光学相干层析(OCT)系统可以进行口腔龋齿疾病的诊断。该全光纤系统快速准确地获得了人体正常离体牙和具有龋变的离体牙的OCT图像。对比它们的后向散射系数,首次发现具有龋变的离体牙齿的后向散射系数是正常离体牙齿组织的数倍。采用此方法可以对龋齿及早期龋齿进行诊断,对于龋齿早期诊断研究具有重要的意义。

关 键 词:光学相干层析  牙齿  龋齿

Implement of a New Fiber Optical Coherence Tomography System in the Diagnosis of Dental Caries
MENG Zhuo,YAO Xiao-tian,LAN Shou-feng,YAO Hui,LIU Tie-gen,LI Yah-hi,LIANG Yan,WANG Guan-hua.Implement of a New Fiber Optical Coherence Tomography System in the Diagnosis of Dental Caries[J].ACTA Laser Biology Sinica,2010,19(1):120-123,142.
Authors:MENG Zhuo  YAO Xiao-tian  LAN Shou-feng  YAO Hui  LIU Tie-gen  LI Yah-hi  LIANG Yan  WANG Guan-hua
Institution:1. College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Key Laboratory of Opto-electronics Information and Technical Science, Ministry of Education, Tianjin 300072, China;2. Research Center at Tianjin Stomatological Hospital, Tianjin 300041, China)
Abstract:Early demineralization caused by caries will change the refractive index of teeth and increase the backscattering coefficient. A novel optical coherence tomography (OCT) system was used to diagnose the dental caries. With this system, the OCT images of in vitro normal tooth and the caries were obtained quickly and properly, and it was firstly found that the backscattering .coefficient of the caries tooth is several times more than the normal tooth by comparing the caries region with the normal region of the in vitro tooth. This method can be used for the diagnosis of early dental caries caused by the dental decays, therefore has great merits for the clinical diagnosis of early dental caries.
Keywords:optical coherence tomography  dental  caries
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