Optical composite cure radiometer and method

Details Optical composite cure radiometer and method Optical composite cure radiometer and method

2007-02-13

2007-02-13

Wilson, John J (Department: 3732)

Dentistry

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

C433S029000, C250S340000, C250S341500, C356S432000

Reexamination Certificate

active

10888638

ABSTRACT:
A radiometer and method for providing an indication of the amount of time (exposure duration) needed to cause a light curable dental resin composite material to maximally polymerize in response to the application of light from any light-curing source during the preparation of a dental restoration. It describes a radiometer comprising a sample holder of a size designed to hold a sample equivalent of said dental light curable dental material such that the thickness of the sample of light curable material in the sample holder will correspond to the depth of the composite material in the dental restoration; a solid state light sensor; a microprocessor programmed to respond to the output voltage or change in electrical resistance of the light sensor based upon an algorithm defining a mathematical model representative of the change in light transmission through the light curable dental material as a function of the degree to which said light curable dental material is being polymerized. It includes a time display that is responsive to the output signal generated from the microprocessor for displaying the amount of time (exposure duration) needed to maximally polymerize the light curable dental material in the dental restoration.

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patent: 6485301 (2002-11-01), Gemunder et al.
patent: 7091254 (2006-08-01), Crivello

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