US4790752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated dental impression tray
Assignee: POLY-OPTICAL PRODUCTS Inc A CORP OF DELAWARE
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Filing: 1987-11-02
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Granted: 1988-12-13
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Expires: 2007-11-02
Abstract
Abstract A dental impression tray constructed from an optically transmissive material prepared with appropriately positioned recesses to direct light towards a U-shaped channel formed in the body of the tray. The channel is dimensioned to receive a portion of a patient's teeth. The recesses are formed in the outermost surfaces of the dental tray sides. In particular, multiple, spaced-apart recesses are formed in the outermost surfaces of the tray sides to deflect light into the channel area, which may have deposited therein a light polymerizable or curable material. Light is introduced into the tray through at least a first light portal which is integrally formed in a side of the tray.
Inventors
- 👤 Leonard W. Cheslak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:18
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/001; A; A61; A61C; A61C9/00; A61C9/0006; G02B6/0008; A61C19/00; A61C19/003
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
132 words
A dental tray comprising: a trough shaped optically transmissive tray body characterized by substantially total internal reflection having formed therein a channel being sufficiently curved to receive at least a partial arch-shaped group of teeth, said channel having a cross-section wider than said teeth to be received therein, said tray body having an outer surface with multiple, contiguously positioned recesses, each recess being defined by two opposing surfaces which angle inwardly from said outer surface toward each other to define therebetween an included angle, and with said tray body formed with at least a first light portal upon which a light source can be directed to direct light through said optically transmissive body for reflection and refraction from the inwardly angled surfaces of the recesses toward the channel of the tray body.
Claim 2
Dependent Claim
132 words
A dental tray comprising: a trough shaped optically transmissive tray body characterized by substantially total internal reflection having formed therein a channel being sufficiently curved to receive at least a partial arch-shaped group of teeth, said channel having a cross-section wider than said teeth to be received therein, said tray body having an outer surface with multiple, contiguously positioned recesses, each recess being defined by two opposing surfaces which angle inwardly from said outer surface toward each other to define therebetween an included angle, and with said tray body formed with at least a first light portal upon which a light source can be directed to direct light through said optically transmissive body for reflection and refraction from the inwardly angled surfaces of the recesses toward the channel of the tray body.
Claim 3
Dependent Claim
14 words
The dental tray of claim 1 wherein said recesses are substantially triangularly shaped recesses.
Claim 4
Dependent Claim
20 words
The dental tray of claim 1 wherein said included angle is from about seventy to about one hundred ten degrees.
Claim 5
Dependent Claim
18 words
The dental tray of claim 1 wherein said included angle is from about eighty-five to about ninety-five degrees.
Claim 6
Dependent Claim
18 words
The dental tray of claim 2 wherein said included angle is from about eighty-five to about ninety-five degrees.
Claim 7
Dependent Claim
25 words
The dental tray of claim 1 wherein said channel is defined by two opposing spatially separated walls extending upwards from the remainder of said body.
Claim 8
Dependent Claim
29 words
The dental tray of claim 6 wherein said recesses are arranged along each of said body outer surfaces along said two opposing walls and said remainder of said body.
Claim 9
Dependent Claim
31 words
The dental tray of claim 1 wherein said body is formed by two opposing spatially separated walls extending upwards from and integrally formed to a base wall to define said channel.
Claim 10
Dependent Claim
27 words
The dental tray of claim 8 wherein said recesses are arranged along each of said body outer surfaces along said two opposing walls and said base wall.
Claim 11
Dependent Claim
20 words
The dental tray of claim 9 wherein said included angle is from about seventy to about one hundred ten degrees.
Claim 12
Dependent Claim
18 words
The dental tray of claim 9 wherein said included angle is from about eighty-five to about ninety-five degrees.
Claim 13
Dependent Claim
52 words
The dental tray of claim 7 wherein said recesses are formed by two opposing surfaces which angle inwardly from said body outer surface for a distance substantially equivalent to from about two to about eighty percent of the cross-sectional distance of each of said walls and of said remainder of said body.
Claim 14
Dependent Claim
49 words
The dental tray of claim 9 wherein said recesses are formed by two opposing surfaces which angle inwardly from said body outer surface for a distance substantially equivalent to from about two to about eighty percent of the cross-sectional distance of each of said walls and of said base.
Claim 15
Dependent Claim
52 words
The dental tray of claim 7 wherein said recesses are formed by two opposing surfaces which angle inwardly from said body outer surface for a distance substantially equivalent to from about two to about twenty-six percent of the cross-sectional distance of each of said walls and of said remainder of said body.
Claim 16
Dependent Claim
49 words
The dental tray of claim 9 wherein said recesses are formed by two opposing surfaces which angle inwardly from said body outer surface for a distance substantially equivalent to from about two to about twenty-six percent of the cross-sectional distance of each of said walls and of said base.
Claim 17
Dependent Claim
52 words
The dental tray of claim 7 wherein said recesses are formed by two opposing surfaces which angle inwardly from said body outer surface for a distance substantially equivalent to from about two to about sixteen percent of the cross-sectional distance of each of said walls and of said remainder of said body.
Claim 18
Dependent Claim
49 words
The dental tray of claim 9 wherein said recesses are formed by two opposing surfaces which angle inwardly from said body outer surface for a distance substantially equivalent to from about two to about sixteen percent of the cross-sectional distance of each of said walls and of said base.
Claim 19
Dependent Claim
20 words
The dental tray of claim 17 wherein said included angle is from about seventy to about one hundred ten degrees.
Claim 20
Dependent Claim
18 words
The dental tray of claim 17 wherein said included angle is from about eighty-five to about ninety-five degrees.
Claim 21
Dependent Claim
19 words
The dental tray of claim 18 wherein at least a first surface of each of said recesses is roughened.
Claim 22
Dependent Claim
54 words
The dental tray of claim 9 11 17 further being formed with an integral handle, which handle extends outward from said body and is formed with a tubular passageway therethrough, said passageway being dimensioned to receive a source of illumination and which passageway is formed with an innermost end which functions as said portal.
Claim 23
Dependent Claim
52 words
The dental tray of claim 11 further being formed with an integral handle, which handle extends outward from said body and is formed with a tubular passageway therethrough, said passageway being dimensioned to receive a source of illumination and which passageway is formed with an innermost end which functions as said portal.
Claim 24
Dependent Claim
52 words
The dental tray of claim 17 further being formed with an integral handle, which handle extends outward from said body and is formed with a tubular passageway therethrough, said passageway being dimensioned to receive a source of illumination and which passageway is formed with an innermost end which functions as said portal.
References Cited (Backward Citations)
US4631030A
Cited
US4553936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |