# US 2021/0275280 A1 · Tooth cleaning system, Powder container and Insert for a powder container

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- Number: US 2021/0275280 A1
- Document ID: US20210275280A1
- Status: Published application
- Kind: A1
- Application number: 16/336,522
- Filed: 2017-09-12
- Published: 2021-09-09
- Earliest claimed: 2016-09-26
- Assignees: Ferton Holding S.A.
- Applicants: Ferton Holding S.A.
- Inventors: Etienne Lebreton; Florent Jean-Claude Georges Beani; Tiago Bertolote; Marcel Donnet
- Web page: https://patentgrep.com/patent/US20210275280A1

## CPC

- A61C 3/025: Instruments acting like a sandblast machine, e.g. for cleaning, polishing or cutting teeth
- B24C 7/0061: {of feed pressure}
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)
- B24C: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL

## Abstract

Teeth cleaning system, in particular dental powder jet cleaning system, including a powder container having an inlet for compressed air, and where the powder container has an outlet for a powder/air mixture, and where the outlet communicates with a pipe system via which a fluid is passed, in particular a powder/air mixture which is formed in the powder container and from which powder container can be led, where a flow resistance of the inlet is configured relative to a flow resistance of the outlet and/or of the pipepipe system in such a way that a predetermined pressure loss is set across the inlet.

## Claims

### Claim 1

A tooth cleaning system, in particular a dental powder jet cleaning system,
comprising a powder container,
wherein the powder container has an inlet for compressed air,
and wherein the powder container has an outlet spaced from the inlet for a powder/air mixture, and
wherein the outlet is connected to a pipe system, via which a fluid can be led out from the powder container,
wherein
a flow resistance of the inlet is configured relative to a flow resistance of the outlet and/or of the pipe system in such a way that a predetermined pressure loss is set across the inlet.

### Claim 2 (depends on 1)

The tooth cleaning system according to claim 1,
wherein the inlet comprises an inlet nozzle and an aperture, and
wherein
the aperture has an inlet throttle cross-section, which determines the flow resistance of the inlet.

### Claim 3 (depends on 1)

The tooth cleaning system according to claim 1,
wherein the flow resistance of the outlet is determined by a reference throttle cross-section, and wherein
the reference throttle cross-section is an outlet throttle cross-section of the outlet and/or a throttle cross-section of the pipe system.

### Claim 4 (depends on 2)

The tooth cleaning system according to claim 2,
wherein the inlet throttle cross section is less than or equal to the reference throttle cross section.

### Claim 5 (depends on 2)

The tooth cleaning system according to claim 2,
wherein the inlet comprises a duckbill check valve/lip check valve, arranged between the aperture and the inlet nozzle.

### Claim 6 (depends on 2)

The tooth cleaning system according to claim 2,
wherein the inlet comprises a first adjusting device which is configured to regulate the pressure loss, by means of an adjustment of the inlet throttle cross-section.

### Claim 7 (depends on 2)

The tooth cleaning system according to claim 2,
wherein the aperture is configured to be interchangeable.

### Claim 8 (depends on 1)

The tooth cleaning system according to claim 1,
wherein the inlet is formed as an insert which is interchangeably configured, and wherein
the insert is preferably a bottom element of the powder container.

### Claim 9 (depends on 8)

The tooth cleaning system according to claim 8, wherein the insert and/or aperture is configured to inform about or to indicate a pressure loss level, by pattern and/or colour coding or dimensioning of the insert.

### Claim 10 (depends on 3)

The tooth cleaning system according to claim 3,
wherein the reference throttle cross-section is adjustable by a second adjustment unit.

### Claim 11 (depends on 3)

The tooth cleaning system according to claim 3,
wherein the reference throttle cross section is adjustable by replacing one or more nozzles.

### Claim 12 (depends on 1)

A powder container, in particular for a tooth cleaning system according to claim 1,
having an inlet for a fluid for compressed air, wherein an inlet throttle cross-section of the inlet is adjustable.

### Claim 13 (depends on 12)

An insert for a powder container according to claim 12, wherein the insert comprises the inlet.