US5199870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for destroying and removing material from teeth
Assignee: Asclepion Laser Technologies GmbH
•
Filing: 1990-04-07
•
Granted: 1993-04-06
•
Expires: 2010-04-07
Abstract
Abstract In a process for destroying and removing tooth material by means of pulsed infrared laser beams, in order to reduce the damage to the surrounding tissue without simultaneously impairing the effectiveness of the removal, it is propsed that prior to the irradiation with the laser beams, the tooth material be covered with a layer of liquid of between 10 and 200 micrometers thickness which absorbs the laser radiation.
Inventors
- 👤 Rudolf Steiner
- 👤 Ulrich Keller
- 👤 Raimund Hibst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:17
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/0046; A61B; A61B17/00; A61B17/22; A61B2017/22082; A61B2017/22085
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
50 words
A process for destroying and removing tooth material by means of pulsed infrared laser beams, comprising the step of covering the tooth material, prior to or during the irradiation with the laser beams, with a layer of liquid of between 10 and 200 micrometers thickness which absorbs the laser radiation.
Claim 2
Dependent Claim
50 words
A process for destroying and removing tooth material by means of pulsed infrared laser beams, comprising the step of covering the tooth material, prior to or during the irradiation with the laser beams, with a layer of liquid of between 10 and 200 micrometers thickness which absorbs the laser radiation.
Claim 3
Dependent Claim
14 words
A process as defined in claim 1, wherein water is used as said liquid.
Claim 4
Dependent Claim
12 words
A process as defined in claim 2, wherein said liquid contains detergents.
Claim 5
Dependent Claim
31 words
A process as defined in claim 2, wherein the amount of liquid applied to the tooth material per unit time is increased as the radiation energy per laser pulse is increased.
Claim 6
Dependent Claim
17 words
A process as defined in claim 2, wherein the liquid is applied intermittently before each laser pulse.
Claim 7
Dependent Claim
13 words
A process as defined in claim 2, wherein the liquid is applied continuously.
Claim 8
Dependent Claim
32 words
A process as defined in claim 6, wherein the amount of liquid applied to the tooth material per unit time is increased as a repetition rate of the laser pulses is increased.
Claim 9
Dependent Claim
22 words
A process as defined in claim 2, wherein the liquid is applied to the tooth material in the form of a spray.
Claim 10
Dependent Claim
12 words
A process as defined in claim 1, wherein said liquid contains detergents.
Claim 11
Dependent Claim
31 words
A process as defined in claim 1, wherein the amount of liquid applied to the tooth material per unit time is increased as the radiation energy per laser pulse is increased.
Claim 12
Dependent Claim
17 words
A process as defined in claim 1, wherein the liquid is applied intermittently before each laser pulse.
Claim 13
Dependent Claim
13 words
A process as defined in claim 1, wherein the liquid is applied continuously.
Claim 14
Dependent Claim
32 words
A process as defined in claim 12, wherein the amount of liquid applied to the tooth material per unit time is increased as a repetition rate of the laser pulses is increased.
Claim 15
Dependent Claim
22 words
A process as defined in claim 1, wherein the liquid is applied to the tooth material in the form of a spray.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |