Method and apparatus for detecting the presence of dental plaque

Details Method and apparatus for detecting the presence of dental plaque Method and apparatus for detecting the presence of dental plaque

1992-07-20

1995-01-17

O'Connor, Cary E.

Dentistry

Method or material for testing, treating, restoring, or...

433 29, 128665, A61C 500

Patent

active

053821637

ABSTRACT:
A method and apparatus for detecting dental plaque or calculus deposits on a tooth site using a pulse of broad band light to illuminate a tooth site thereby exciting the deposit to luminescence. A time-related characteristic of the luminescence, such as its decay rate, is then analyzed to detect the presence of plaque or calculus at the tooth site. The excitation radiation preferably encompasses a range of wavelengths between about 375 nm to 575 nm, and the time-related characteristic of the luminescence that is analyzed preferably has a wavelength above about 600 nm.

REFERENCES:
patent: 3709612 (1973-01-01), Clemens
patent: 3811777 (1974-05-01), Chance
patent: 4170987 (1979-10-01), Anselmo et al.
patent: 4178917 (1979-12-01), Shapiro
patent: 4290433 (1981-09-01), Alfano
patent: 4479499 (1984-10-01), Alfano
patent: 4515476 (1985-05-01), Ingmar

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