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US3874084A Expired / Lapsed US ⏱️ 0.0 years remaining

Prescription tooth-cleansing and gingival therapeutic device

Assignee: Individual
•
Filing: 1973-12-06
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Granted: 1975-04-01
•
Expires: 1993-12-06
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Abstract

Abstract A prescription fitted unitary tooth-cleansing and gingival therapeutic device is disclosed which is fabricated from study models taken by a dentist of a patient''s individual dentition. The device of the invention includes opposed channels which are formed integrally with a common handle. Each channel is bent into an arcuate shape so as to form an arch which conforms to the exact shape of the teeth and adjacent structures. In addition, the interior of each channel, which is formed of an elastic plastic material, is molded to closely conform to the contour of the teeth and adjacent soft tissue structures of the person utilizing the device. In the interior channel portion of the device are positioned, in two sections, a plurality of bristles or similar projections, which extend generally in a perpendicular direction from the inner walls of the channels. The material of said channels is sufficiently elastic so that when the person chews into the upper and lower channels with his teeth, the projections effectively and exactly clean food particles and bacteria from every surface of every tooth except the interproximal contact areas and interdental Col, and in addition, the device cleanses the area between the teeth and gums known as the Gingival Crevice while also properly massaging and stimulating the Free Marginal Gingival, by reason of the fact that it is provided with ledges beyond the several gingival lines to permit compression of the gingiva.

Inventors

  • 👤 William Lloyd Cole

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:07
CPC Classifications
A; A61; A61C; A61C17/00

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 125 words
A tooth-cleansing device for cleaning and massaging substantially the entire surface of the teeth comprsing: a molded body of elastomeric material having arcuate lower channels of the curvature of the lower jaws of the user and a superposed upper channel of the curvature of the upper jaw of the user, each of said channels having a central portion substantially conforming to the shapes of the clinical crown portions of the teeth of the user, each of said channels containing undulating gingival interior ledge portions on each side of the central portion, corresponding to the free marginal gingiva of the teeth of the user, whereby when the user chews upon the device, the Free Marginal Gingiva is compressed and released substantially uniformly along the length thereof.
Claim 2
Dependent Claim 125 words
A tooth-cleansing device for cleaning and massaging substantially the entire surface of the teeth comprsing: a molded body of elastomeric material having arcuate lower channels of the curvature of the lower jaws of the user and a superposed upper channel of the curvature of the upper jaw of the user, each of said channels having a central portion substantially conforming to the shapes of the clinical crown portions of the teeth of the user, each of said channels containing undulating gingival interior ledge portions on each side of the central portion, corresponding to the free marginal gingiva of the teeth of the user, whereby when the user chews upon the device, the Free Marginal Gingiva is compressed and released substantially uniformly along the length thereof.
Claim 3
Dependent Claim 28 words
The tooth cleansing device as claimed in claim 1 wherein the central portions of said channels contain a multiplicity of spaced, cleansing projections extending from the surface thereof.
Claim 4
Dependent Claim 24 words
The tooth-cleansing device as claimed in claim 1, wherein the cleansing projections comprise clusters of bristles embedded in the elastomeric material of the channels.
Claim 5
Dependent Claim 50 words
The tooth-cleansing and gingival stimulating device as claimed in claim 1 wherein the lines connecting the gingival ledge portions of said device to the central portion of the channels comprise a series of bristles adapted to extend into the gingival crevices when the ledge portions compress the free marginal gingiva.
Claim 6
Dependent Claim 32 words
The tooth-cleansing device as claimed in claim 1 comprising, in addition, a handle extending from the connecting mass of elastomeric material in the region between the central parts of the arcuate channels.
Claim 7
Dependent Claim 130 words
A process of making a chew brush type of tooth cleansing device comprising taking an impression of patient''s dentition, forming a replica of said impression from elastomeric material comprising upper and lower channels adapted to closely conform to the contour of the teeth in the maxillary and mandibular arches, said impression taken of the patient''s dentition including the clinical crown portions of all of the teeth and, in addition, portions of the free marginal gingiva beyond the gingival lines formed between the clinical crown portions of the teeth and the free edges of the gingiva, and providing ledges on the elastomeric replica adjacent at least a portion of the gingival lines whereby said ledges are adapted to substantially uniformly compress the free marginal gingiva of the patient when chewed upon.
Claim 8
Dependent Claim 130 words
A process of making a chew brush type of tooth cleansing device comprising taking an impression of patient''s dentition, forming a replica of said impression from elastomeric material comprising upper and lower channels adapted to closely conform to the contour of the teeth in the maxillary and mandibular arches, said impression taken of the patient''s dentition including the clinical crown portions of all of the teeth and, in addition, portions of the free marginal gingiva beyond the gingival lines formed between the clinical crown portions of the teeth and the free edges of the gingiva, and providing ledges on the elastomeric replica adjacent at least a portion of the gingival lines whereby said ledges are adapted to substantially uniformly compress the free marginal gingiva of the patient when chewed upon.
Claim 9
Dependent Claim 38 words
The process as claimed in claim 6, comprising forming scrubbing projections on those portions of the elastomeric replica corresponding to the clinical crown portions of the teeth whereby to clean the teeth wheN the chew-brush is chewed upon.
Claim 10
Dependent Claim 27 words
The process as claimed in claim 6 wherein the ledges are formed as smooth surfaces, except that a line of brushes is formed along said gingival lines.

References Cited (Backward Citations)

US1691785A Cited
US1707118A Cited
US2257709A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-03-31 1978-09-30 1979-04-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-03-31 1982-09-30 1983-04-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-03-31 1986-09-30 1987-04-01 $7700.00 Window Closed / Lapsed

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