Radiant energy – Radiant energy generation and sources – With radiation modifying member
Patent
1982-04-26
1987-12-29
Church, Craig E.
Radiant energy
Radiant energy generation and sources
With radiation modifying member
250504R, H01J 6140
Patent
active
047162961
ABSTRACT:
An apparatus for applying light in selective frequency ranges to organic composite materials used in restorative dentistry for optimum curing of the composite materials includes a lamp (14) energized by power supply (12) to transmit light through a flexible light transmitting cord (22). A dichroic filter lens (18) is disposed within an end cap (32) detachably securable to the end of a contra angle probe (27) mounted on a hand held handle (28) secured to the end of cord (22) opposite lamp (14). Lens (18) is selected with reference to the particular composite material to be cured so that substantially all frequencies of light produced by lamp (14) are blocked or attenuated except the frequency range which produces uniform and complete curing of the composite material without causing radical cross-linking of the composite material. The desired light frequency range is ascertained by sequentially directing different frequencies of light at a sample of the composite material and measuring the intensity of the light absorbed by the compound at each test frequency. The frequencies of light which are highly absorbed by the organic material without causing radical cross-linking of the material are chosen for the curing process.
REFERENCES:
patent: 4149086 (1979-04-01), Nath
The Illustrated Encyclopedia of Science and Technology, 1979, p. 228.
Exhibit 1--Consists of a portion of a brochure distributed by Kulzer, Inc. advertising a dental composite curing unit sold under the trade name TRANSLUX.
Exhibit 2--Consists of a portion of a Dentsply International Inc. advertising brochure for an apparatus for curing dental restorative composites distributed under trade name PRISMA-LITE.
Exhibit 3--Avertisement for an apparatus for curing dental restorative composites manufactured by Vivadent, Inc. and sold under the trade name HELIOMAT.
Exhibit 4--Avertisement for an apparatus for curing dental composites sold under the brand name ESPE-Premier.
Exhibit 5--Illustrates a dental restorative composite curing apparatus sold under the mark DenMat.
Exhibit 6--Brochure advertising a visible light curing unit sold under the mark POLY-LITE 2000.
Exhibit 7--Advertisement for versatile light system manufactured by the Litema Company of W. Germany.
Exhibit 8--Advertisement for an apparatus for curing dental restorative composites manufactured by Demetron Research Corporation and sold under the mark ULTRA NOVAR.
Exhibit 9--Portions of an advertising brochure distributed by OCLI concerning color separation dichroic filters.
Exhibit 10--Composed of the title page and pp. 749-753 of textbook entitled Organic Chemistry of Synthetic High Polymers, by Robert W. Lenz.
Exhibit 11 includes pp. 155-159 of Polymer Science and Engineering, by David J. Williams.
Exhibit 12--pp. 1, 2, 4 and 50 of text entitled Applications of Absorption Spectroscopy of Organic Compounds, by John R. Dyer.
Bussiere Ronald L.
Smith Robert J.
Berman Jack I.
Church Craig E.
Surgicorp
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