WO1995026167A1 - Dental instrument - Google Patents
Dental instrument Download PDFInfo
- Publication number
- WO1995026167A1 WO1995026167A1 PCT/SE1995/000318 SE9500318W WO9526167A1 WO 1995026167 A1 WO1995026167 A1 WO 1995026167A1 SE 9500318 W SE9500318 W SE 9500318W WO 9526167 A1 WO9526167 A1 WO 9526167A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drill tip
- coolant
- conduit
- delivery
- suction
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
- A61C17/0217—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication having means for manually controlling the supply of two or more fluids, e.g. water and air
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
- A61C17/0208—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication combined with means providing suction
Definitions
- the present invention relates to a method of reducing the extent of dispersion of material, particularly mercury, released when • creating a tooth with a dental instrument.
- the invention also relates to an arrangement fcr carrying out the method.
- Mercury is released in a liquid or a gaseous state when drilling, grinding, polishing, filling or likewise treating teeth containing amalgam fillings.
- Free mercury vapour is produced by t e heat that is generated when drilling an amalgam tooth filling.
- Mercury vapours are also emitted frc mercury residues and amalgam residues that are present in the dentist's facilities.
- the residues of other dental repair materials can also cause problems. Such residues, in vapour, solid or liquid form, are liable to have a deleterious affect on the dentist, dental nurse, dental hygienist and patients.
- water is often sprayed onto a tooth as the tooth is being drilled, and a suction device comprising a tube of relatively large diameter is often held close to the drill by the dentist or dental nurse while drilling the tooth.
- the water and air sprayed onto the drill and the tooth cavity is delivered throuc.-i a tube fitted en the outside of the angle piece on which the drill tip is mounted, so that the resultant jet of water/air will impinge on the cavity from one side thereof. In so doing, the water jet rebounds against the tooth and is dispersed throughout the ambient space.
- the suction device used as water is sprayed onto the tooth is unable to extract all of the water that is dispersed, including the vapour that accompanies the water, this vapour consequently being dispersed throughout the room.
- the suction force may be too great to prevent adequate cooling of the tooth, while on the other hand the suction force may be too low in relation to the water and air pressure, resulting in further dispersion of loosened material in the oral cavity and in the surrounding space.
- the object of the present invention is to overcome the aforedescri- bed drawbacks when treating teeth with a dental instrument.
- the invention relates to a method of preventing the dispersion of material that is loosened or released when treating teeth with a dental instrument, said method being characterized by spraying coolant and optionally air and/or a binder onto the tooth in the working direction from at least one supply orifice in the instrument, and at the same time generating a suction effect through one or more openings located adjacent to or around the supply orifices in the instrument.
- working direction is meant here the direction in which the working implement, e.g. a drill tip or abrasive bit or abrasive wheel is attached to a holder provided on the instrument.
- the invention also relates to a tooth treatment arrangement constructed for carrying out the inventive method.
- This arrangement includes a working implement and at least one coolant and air- supply conduit, a conduit connected to a suction device for the removal of debris, vapours, minute particles, liquid and/or air, and optionally also a separate conduit for supplying a binder which chemically binds or sorbs the released material, wherein all conduits are arranged in an integrated, common housing and open into or are located adjacent to the working implement.
- vapours and debris will depart as the tooth is being treated, these vapours and debris often being of an unhealthy nature.
- inventive method and inventive arrangement enable these vapours, gases and debris to be isolated and captured at the location where they occur, and cause the same to be bound and carried away to a safe storage device, for instance to an amalgam separator. No gases, vapours, debris shall be permitted to enter the surrounding space or room from the tooth in the working process.
- the inventive method and arrangement can also be used in dental hygiene work, for instance when grinding, polishing the teeth or other work carried out by the dental hygienist.
- this binder may be effective in binding vapour or liquid chemically, or by physically absorbing or adsorbing the released material.
- Selenium and selenium compounds are examples of binding agents suitable for binding mercury vapour, for instance. Different forms of selenium are also able to bind other metals and plastics. Sulphur, carbon, active carbon and different compounds thereof are examples of effective mercury binding agents.
- the coolant may consist in a liquid jet, a liquid mist, air, a gel, either individually or in combination.
- the actual coolant may be alcohol, since alcohol will prevent mercury vapours from being taken up in the blood and has a protective effect against the ingress of mercury into the brain.
- Fig. 1 is a sectioned view of one embodiment of the inventive arrangement
- Figs. 2-5 illustrate different embodiments of the front part of the arrangement shown in Fig. 1;
- Fig ' . 6 is a sectioned view of a further embodiment of the inventive arrangement.
- B identifies an angle piece; 1 identifies a drill tip or drill bit; 2 identifies binder delivery passageway/passageways;
- Figs. 2-5 illustrate the front part 5 of the angle piece, which functions as a holder for the drill tip or bit 1.
- the drill tip projects out from the surface 6 of the holder 5.
- the delivery channels and the suction channel open out at the surface 6 or outside the surface 6.
- Fig. 2 shows the delivery channel 3 extending through the actual drill tip 1, and shows the suction channel orifice 4 located concentrically with the drill tip 1 and extending partially therearound.
- the outlet end of the delivery channel 3 has the form of a narrow tube around the drill tip 1. This tube terminates somewhat short of the end of the drill tip.
- th'a suction channel orifice 4 forms a complete ring around the drill tip 1.
- Fig. 4 illustrates other conceivable configurations of the suction channel orifice 4.
- the orifice may have the form of one or more parts of a circle concentrical with the drill tip.
- the suction channel 4 has several outlet orifices disposed around the drill tip 1.
- A identifies a binder delivery channel
- D identifies a drill tip; and E identifies a coolant delivery tube.
- coolant is delivered in the form of a covering mantle around that part of the tooth being worked and assists in preventing released mercury from dispersing in the oral cavity and in the surrounding room space.
- the suction channel is located inwardly of the channel A through which binder is delivered and, in turn, surrounds the drill tip and the coolant delivery channel.
- the suction channel may be located furthest out, so as to surround both the coolant delivery channel and the binder delivery channel.
- suction channel or the binder delivery channel may be placed nearest the drill tip and to place the coolant delivery channel further out.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21547/95A AU2154795A (en) | 1994-03-25 | 1995-03-24 | Dental instrument |
JP7525121A JPH10501434A (en) | 1994-03-25 | 1995-03-24 | Dental treatment instrument |
EP95914648A EP0752835A1 (en) | 1994-03-25 | 1995-03-24 | Dental instrument |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9401021A SE502737C2 (en) | 1994-03-25 | 1994-03-25 | Method and apparatus for preventing the spread of released material during tooth processing |
SE9401021-2 | 1994-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995026167A1 true WO1995026167A1 (en) | 1995-10-05 |
Family
ID=20393432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1995/000318 WO1995026167A1 (en) | 1994-03-25 | 1995-03-24 | Dental instrument |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0752835A1 (en) |
JP (1) | JPH10501434A (en) |
AU (1) | AU2154795A (en) |
SE (1) | SE502737C2 (en) |
WO (1) | WO1995026167A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015006491A1 (en) * | 2013-07-10 | 2015-01-15 | H2O Tech, Inc. | Stabilized, water-jet, slurry apparatus and method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1089117B (en) * | 1958-05-05 | 1960-09-15 | Piorvit S R L | Combined injection and suction device for the treatment of tooth cavities |
US4340365A (en) * | 1979-05-08 | 1982-07-20 | Antonio Pisanu | Spraying and suction cleansing device |
US4608017A (en) * | 1983-05-20 | 1986-08-26 | Micron Co., Ltd. | Endodontic irrigating instrument |
WO1993007832A1 (en) * | 1989-05-01 | 1993-04-29 | Wiele Gary B | Dental instrument |
-
1994
- 1994-03-25 SE SE9401021A patent/SE502737C2/en not_active IP Right Cessation
-
1995
- 1995-03-24 WO PCT/SE1995/000318 patent/WO1995026167A1/en not_active Application Discontinuation
- 1995-03-24 AU AU21547/95A patent/AU2154795A/en not_active Abandoned
- 1995-03-24 JP JP7525121A patent/JPH10501434A/en active Pending
- 1995-03-24 EP EP95914648A patent/EP0752835A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1089117B (en) * | 1958-05-05 | 1960-09-15 | Piorvit S R L | Combined injection and suction device for the treatment of tooth cavities |
US4340365A (en) * | 1979-05-08 | 1982-07-20 | Antonio Pisanu | Spraying and suction cleansing device |
US4608017A (en) * | 1983-05-20 | 1986-08-26 | Micron Co., Ltd. | Endodontic irrigating instrument |
WO1993007832A1 (en) * | 1989-05-01 | 1993-04-29 | Wiele Gary B | Dental instrument |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015006491A1 (en) * | 2013-07-10 | 2015-01-15 | H2O Tech, Inc. | Stabilized, water-jet, slurry apparatus and method |
EP3019113A4 (en) * | 2013-07-10 | 2017-01-25 | H2O Tech, Inc. | Stabilized, water-jet, slurry apparatus and method |
US11026765B2 (en) | 2013-07-10 | 2021-06-08 | H2O Tech, Inc. | Stabilized, water-jet slurry apparatus and method |
Also Published As
Publication number | Publication date |
---|---|
SE9401021L (en) | 1995-09-26 |
AU2154795A (en) | 1995-10-17 |
SE9401021D0 (en) | 1994-03-25 |
SE502737C2 (en) | 1995-12-18 |
EP0752835A1 (en) | 1997-01-15 |
JPH10501434A (en) | 1998-02-10 |
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