Assessment of tooth structure using laser based ultrasonics

Details Assessment of tooth structure using laser based ultrasonics Assessment of tooth structure using laser based ultrasonics

2007-10-23

2007-10-23

Jaworski, Francis J. (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S438000, C433S215000

Reexamination Certificate

active

10250882

ABSTRACT:
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.

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