US4983381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for producing the whitening of live teeth with pathological and normal colorations
Assignee: Futura Medical SA
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Filing: 1987-04-16
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Granted: 1991-01-08
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Expires: 2007-04-16
Abstract
Abstract A method and a device are described for producing the whitening of live teeth with pathological and normal colorations, destined to whitening any tooth with normal color and furthermore eliminating the pathological coloration produced by aetiologies of different origin. The whitening of the teeth (6) is effected applying different chemical products to the dental enamel, covering the teeth to be treated with a metallic plate containing an absorbent material with a chemical whitening product which acts in the presence of heat and provokes the reaction of said product which will act on all sides of the dental drown, producing whitening of the teeth. The device is constituted, in essence, by a whitening device, comprised by a thermic heating unit, whether or not controlled by microprocessor, heating elements, temperature, time and alarm sensors and controls.
Inventors
- 👤 Vicente M. Torres Zaragoza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:41
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/06; A61C19/063; A61C19/066; A61K; A61K6/00; A61K6/20; A61K6/40; A61K6/80; A61K6/884; A61K6/887; A61C1/00; A61C1/0046
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
201 words
A method for whitening a live tooth or for simultaneously whitening a plurality of live teeth, said tooth or teeth containing colorants which impart to the tooth or teeth a color or colors, said tooth or teeth having enamel and enamel tubules, said tubules containing water or water vapor, said method comprising acid engraving the enamel to open the enamel tubules and extracting the water or water vapor from the tubules, covering the tooth or teeth with a metallic plate having an absorbent material containing a chemical whitening agent so that the tooth or teeth is covered by the plate with the absorbent material in contact with the tooth or teeth, said whitening agent being effective to react with and destroy the colorants when activated, heating the plate to cause the whitening agent to be heated to a temperature sufficient to activate it, and causing said absorbent material to be pressed against the tooth or teeth so as to cause the activated whitening agent to be released into the tubules and to diffuse through the tubules to the enamel-dentine junction of the tooth or teeth whereby to react with and destroy the colorants and thereby to whiten the tooth or teeth.
Claim 2
Independent Claim
201 words
A method for whitening a live tooth or for simultaneously whitening a plurality of live teeth, said tooth or teeth containing colorants which impart to the tooth or teeth a color or colors, said tooth or teeth having enamel and enamel tubules, said tubules containing water or water vapor, said method comprising acid engraving the enamel to open the enamel tubules and extracting the water or water vapor from the tubules, covering the tooth or teeth with a metallic plate having an absorbent material containing a chemical whitening agent so that the tooth or teeth is covered by the plate with the absorbent material in contact with the tooth or teeth, said whitening agent being effective to react with and destroy the colorants when activated, heating the plate to cause the whitening agent to be heated to a temperature sufficient to activate it, and causing said absorbent material to be pressed against the tooth or teeth so as to cause the activated whitening agent to be released into the tubules and to diffuse through the tubules to the enamel-dentine junction of the tooth or teeth whereby to react with and destroy the colorants and thereby to whiten the tooth or teeth.
Claim 3
Dependent Claim
30 words
A method as claimed in claim 1 further comprising applying a cleanser or cleansers to the teeth prior to the acid engraving to clean or degrease the enamel or both.
Claim 4
Dependent Claim
26 words
A method as claimed in claim 2 wherein the whitening agent comprises H 2 O 2 and is present in an amount of from about 30-70%.
Claim 5
Dependent Claim
43 words
A method as claimed in claim 3 wherein the whitening agent further comprises a reagent, which catalyzes the reaction between the whitening agent and the colorants, and a substance or substances which help to diffuse the whitening agent through the tooth or teeth.
Claim 6
Dependent Claim
54 words
A method as claimed in claim 3 further comprising protecting the gums of a patient to be treated with the method by covering at least part of the gums with a chemical compound which is resistant to the whitening agent or separating the gums from the whitening agent with a metallic barrier or both.
Claim 7
Dependent Claim
20 words
A method as claimed in claim 5 wherein the gums are protected with a chemical compound which comprises a cyanoacrylate.
Claim 8
Dependent Claim
75 words
A method as claimed in claim 6 wherein the absorbent material has been saturated with an initial amount of the whitening agent prior to covering the tooth or teeth with the plate and wherein the method further comprises applying an additional amount of the whitening agent to the absorbent material after the initial amount of whitening agent has been released into the tubules and then causing said additional amount to be released into the tubules.
Claim 9
Dependent Claim
26 words
A method as claimed in claim 7 further comprising sealing the enamel after the whitening agent has been released into the tubules in a desired amount.
Claim 10
Dependent Claim
36 words
A method as claimed in claim 1 further comprising regulating the heating of the plate by means of a thermostat to keep the temperature of the plate constant at a temperature of between about 40°-55° C.
Claim 11
Dependent Claim
46 words
A method as claimed in claim 8 wherein the whitening agent is caused to be released into the tubules for a desired period of time, the method further comprising monitoring the time and the temperature of the plate by means of a visual or digital indicator.
Claim 12
Dependent Claim
27 words
A method as claimed in claim 1 further comprising subjecting the whitening agent to laser rays to catalyze the reaction between the whitening agent and the colorants.
Claim 13
Dependent Claim
93 words
An article for use in whitening teeth comprising first means for covering substantially the entire crown of each of a plurality of teeth, said first means comprising second means for containing a chemical agent for whitening the teeth and for releasing the chemical agent when the second means is pressed against the teeth, said first means being adapted for covering the teeth with the second means pressed against the teeth, said article further comprising third means for heating the first and second means whereby to heat the chemical agent to a desired temperature.
Claim 14
Dependent Claim
93 words
An article for use in whitening teeth comprising first means for covering substantially the entire crown of each of a plurality of teeth, said first means comprising second means for containing a chemical agent for whitening the teeth and for releasing the chemical agent when the second means is pressed against the teeth, said first means being adapted for covering the teeth with the second means pressed against the teeth, said article further comprising third means for heating the first and second means whereby to heat the chemical agent to a desired temperature.
Claim 15
Dependent Claim
33 words
An article as claimed in claim 12 wherein said second means comprises a material suitable for absorbing the whitening agent and for releasing said agent when the material is pressed against the teeth.
Claim 16
Dependent Claim
26 words
An article as claimed in claim 13 wherein the first means comprises a thermocube or thermo-containing plate made at least in part of a rust-free metal.
Claim 17
Dependent Claim
42 words
An article as claimed in claim 14 wherein the third means comprises a heating unit which includes a low-frequency power transistor which acts as a thermo-electrical sensor to produce and measure the heat which is applied to the thermocube or thermo-containing plate.
Claim 18
Dependent Claim
17 words
An article as claimed in claim 15 wherein the heating unit is included in the third means.
Claim 19
Dependent Claim
25 words
An article as claimed in claim 16 wherein the third means further comprises means to monitor the use of the article to treat a patient.
Claim 20
Dependent Claim
30 words
An article as claimed in claim 17 wherein the means to monitor includes a microprocessor with a program and memory coupled to means for measuring tooth vitality and tooth color.
Claim 21
Dependent Claim
29 words
An article as claimed in claim 18 wherein the article further comprises an ultraviolet ray emitter, an ultrasound emitter and a laser ray emitter coupled to said third means.
Claim 22
Dependent Claim
39 words
An article as claimed in claim 14 wherein the first means comprises metallic sheet means positioned to block the chemical agent from contacting the gums of a patient to be treated when the first means is covering the teeth.
Claim 23
Dependent Claim
30 words
An article as claimed in claim 12 wherein the first means is adapted for covering a plurality of teeth in one or both maxillae of a person to be treated.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |