发明名称 |
ASSESSMENT OF TOOTH STRUCTURE USING LASER BASED ULTRASONICS |
摘要 |
<p>A means of assessing the internal structure of teeth based upon use of high frequency, highly localized ultrasound (acoustic waves) generated by a short laser pulse is presented. In contrast to traditional contact transducer methods, laser-generated ultrasound is non-contact and non-destructive in nature and requires no special tooth surface preparation. Optical interferometric detection of ultrasound provides a complementary non-destructive, non-contact means for obtaining data with a very small detection footprint. The combination of laser-generated ultrasound and optical interferometric detection allows for in-vivo diagnostics of tooth health that is sensitive to the enamel/dentin, dentin/pulp, and dentin/cementum interfaces as well as a region of dead tracts in the dentin within a tooth.</p> |
申请公布号 |
EP1351602(B1) |
申请公布日期 |
2006.07.26 |
申请号 |
EP20020713411 |
申请日期 |
2002.01.10 |
申请人 |
THE JOHNS HOPKINS UNIVERSITY |
发明人 |
BLODGETT, DAVID, W.;BALDWIN, KEVIN, C.;DUNCAN, DONALD, D. |
分类号 |
A61B5/00;A61B8/08 |
主分类号 |
A61B5/00 |
代理机构 |
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代理人 |
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地址 |
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