EP1744839A1 - Method and device for cleaning dental polishers - Google Patents

Method and device for cleaning dental polishers

Info

Publication number
EP1744839A1
EP1744839A1 EP05771003A EP05771003A EP1744839A1 EP 1744839 A1 EP1744839 A1 EP 1744839A1 EP 05771003 A EP05771003 A EP 05771003A EP 05771003 A EP05771003 A EP 05771003A EP 1744839 A1 EP1744839 A1 EP 1744839A1
Authority
EP
European Patent Office
Prior art keywords
powder
polisher
liquid
conduits
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05771003A
Other languages
German (de)
French (fr)
Inventor
Thierry Casabonne
Dominique Mariaulle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe pour la Conception des Applications des Techniques Electroniques SAS
Original Assignee
Societe pour la Conception des Applications des Techniques Electroniques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe pour la Conception des Applications des Techniques Electroniques SAS filed Critical Societe pour la Conception des Applications des Techniques Electroniques SAS
Publication of EP1744839A1 publication Critical patent/EP1744839A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0322—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid in combination with a plug, e.g. inflatable mole, to isolate a part of the tube
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/002—Cleaning devices specially adapted for dental instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
    • A61C3/025—Instruments acting like a sandblast machine, e.g. for cleaning, polishing or cutting teeth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0402—Cleaning, repairing, or assembling

Definitions

  • the present invention relates to a method and a device for cleaning and maintaining the polishing apparatus used in the field of dentistry for cleaning dental surfaces by spraying thereon with a polishing powder.
  • Numerous air polishers are thus known, which mostly use pneumatic means capable of projecting onto the dental surfaces a flow formed of fine particles of baking soda surrounded by a flow of annular water. It has been found that all of the devices of this type have the recurrent drawback of seeing all of their conduits gradually clog over time under the effect of the formation of agglomerates made up of the mixture of the powder with the humidity of the propellant air.
  • agglomerates form first of all in the recessed areas of the ejection nozzle and the supply pipes of the polisher, then end up, over time, ensuring an almost total clogging of the nozzle as well as the pipes of powder supply thereof. Unclogging the main pipe of the nozzle carrying the abrasive powder is a particularly delicate operation to perform because of its very small diameter (of the order of 0.6 mm). To do this, it has been proposed to use, as a swab, a very fine metallic wire which is introduced through this conduit and which is animated back and forth to inside of it.
  • the wire in particular because of its small diameter, lacks rigidity and tends to slip away from the agglomerates, so that it cannot ensure effectively the unblocking of conduits. It has also been found, in the end pieces thus treated, that the back and forth movements of the metal wire had the effect of creating in the areas concerned micro-grooves thus forming, for the future, attachment areas favoring the formation new agglomerates.
  • the present invention aims to provide a means for cleaning, both preventively and curatively, the various conduits used to convey, in the polishers the polishing powder.
  • the present invention thus relates to a method for maintaining and cleaning the conduits of a dental polisher of the type capable of spraying under pressure a polishing powder on a dental surface, characterized in that it comprises an operational phase consisting of injecting under pressure into at least some of the circulation conduits of said powder a solution in which this powder is soluble.
  • the solution can be stored in a container kept under pressure by a propellant gas.
  • the powder may consist of sodium bicarbonate and the liquid may then consist of a solution of citric acid, in particular a solution in water, the concentration of which will be approximately 4% by weight.
  • the present invention also relates to a device for maintaining and cleaning the conduits of a dental polisher conveying a powder for polishing dental surfaces, characterized in that it comprises: - means for pressurizing a liquid behaving with respect to said powder as a solvent, - means capable of channeling this liquid towards the pipes of the polisher.
  • the pressurizing means may consist of a container of the "aerosol can" type containing said liquid and a propellant gas. This container may be provided with a nozzle capable of fitting in a sealed manner in a cavity in communication with said duct of the polisher.
  • the end of the end piece will be provided with an annular groove receiving an O-ring seal.
  • the powder will consist of sodium bicarbonate and the solvent liquid will comprise citric acid, preferably a solution in water thereof.
  • the concentration of citric acid in water may be of the order of 4% by weight.
  • the cleaning means according to the invention have the advantage of not using mechanical systems so that they respect the integrity of the various conduits conveying the polishing powder.
  • FIG. 3 is a view of the rear part of the air polisher shown in Figure 2.
  • Figure 4 is a partial view in axial section of the duct cleaning means applied to the air polisher shown in Figures 2 and 3.
  • Figure 5 is a partial view in axial section on an enlarged scale of the connection between the cleaning means and the rear part of the air polisher.
  • Figure 6 is a partial axial sectional view of an alternative embodiment of the present invention.
  • FIG. 1 shows schematically a dental handpiece 1 of the air polisher type.
  • the rear part 1a of this air polisher is provided with two supply conduits 2a and 2b which are respectively connected by flexible conduits 3a and 3b, on the one hand to a container 5 containing a pulverulent polishing material 7 constituted, in the case present, sodium bicarbonate and secondly, through a pipe 3b to a pressurized water supply.
  • agglomerates of pulverulent material are deposited, on the one hand, in the internal duct 2a of the air polisher and on the other hand in the pipe d 'feed 3a thereof.
  • a solution of citric acid was produced in water at a concentration of at least 4% by weight of citric acid and this solution was introduced into a container 9 of the "aerosol can" type.
  • This container which is pressurized internally by means of a gas, such as for example nitrogen, comprises a head 11 provided, at its base, with a conduit 13 immersed in the solution 8 and at its external part a nozzle 15 whose diameter is slightly smaller than that of the duct 2a of the air polisher and its end part is provided with an O-ring seal 17.
  • the head 11 is provided with closure means 19 such that when a pressure P is exerted on it, the closure means are concealed, allowing the projection through the central channel 18 of the nozzle 15 the solution 8 contained in the container 9
  • the user can thus periodically carry out preventive cleaning of the pipe 2a of his polisher or unclogging this pipe when the agglomerates are such that they disturb the normal flow of the pulverulent polishing material.
  • the agglomerates can also form in the flexible pipe 3a connecting the container 5 to the air polisher 1 and the user may also, to clean the latter, call on the container 9.
  • an adapter end piece 20 may be provided, the front part of which will have a diameter suitable for its watertight positioning in the flexible pipe 3a and a rear part hollowed out with a recess 21 capable of receiving the nozzle 15 of the container 9. It could well be heard call according to the invention to any other means to propel under pressure the cleaning liquid both in the flexible pipe 3a and in the pipe 2a of the polisher, and in particular to manual type spraying means.

Abstract

The invention relates to a method for maintaining and cleaning the conduits (2a, 3a) of a dental polisher (1), of the type that comprises the pressurised spraying of a polishing powder (7) onto a tooth surface. The inventive method is characterised in that it includes an operational phase comprising the pressurised injection of a solution (9), in which the powder (7) is soluble, into at least some of the conduits (2a, 3a) through which said powder (7) passes.

Description

PROCEDE ET DISPOSITIF DE NETTOYAGE DE POLISSEURS DENTAIRES La présente invention concerne un procédé et un dispositif de nettoyage et d'entretien des appareils polisseurs utilisés dans le domaine de la dentisterie pour nettoyer les surfaces dentaires par projection sur celles- ci d'une poudre de polissage. On connaît ainsi de nombreux aéropolisseurs, qui font appel la plupart du temps à des moyens pneumatiques aptes à assurer la projection sur les surfaces dentaires d'un flux formé de fines particules de bicarbonate de soude entouré d'un flux d'eau annulaire. On a constaté que l'ensemble des dispositifs de ce type présentait l'inconvénient récurent de voir l'ensemble de leurs conduits se colmater progressivement au cours du temps sous l'effet de la formation d'agglomérats constitués du mélange de la poudre avec de l'humidité de l'air propulseur. Ces agglomérats se forment tout d'abord dans les zones encaissées de la buse d'éjection et des conduits d'alimentation du polisseur, puis finissent, au cours du temps, par assurer un colmatage quasi-total de la buse ainsi que des conduites d'alimentation en poudre de ceux- ci . Le débouchage de la conduite principale de la buse véhiculant la poudre abrasive est une opération particulièrement délicate à effectuer en raison de son très faible diamètre (de l'ordre de 0,6 mm). On a proposé pour ce faire d'utiliser, en tant qu' écouvillon, un fil métallique d'une grande finesse que l'on introduit à travers ce conduit et que l'on anime d'un mouvement de va- et-vient à l'intérieur de celui-ci. On a constaté que, dans le cas de certains types d'agglomérats, le fil, notamment en raison de son faible diamètre, manque de rigidité et a tendance à se dérober face aux agglomérats, si bien qu'il ne peut assurer de façon efficace le débouchage des conduits. On a de plus constaté, dans les embouts ainsi traités, que les mouvements de va-et-vient du fil métallique avaient pour effet de créer dans les zones concernées des microrainures formant ainsi, pour le futur, des zones d'accrochage favorisant la formation de nouveaux agglomérats . La présente invention a pour but de proposer un moyen permettant d'assurer le nettoyage, aussi bien à titre préventif qu'à titre curatif, des différents conduits utilisés pour véhiculer, dans les polisseurs la poudre de polissage . La présente invention a ainsi pour objet un procédé d'entretien et de nettoyage des conduits d'un polisseur dentaire du type apte à projeter sous pression une poudre de polissage sur une surface dentaire, caractérisé en ce qu'il comprend une phase opératoire consistant à injecter sous pression dans au moins certains des conduits de circulation de ladite poudre une solution dans laquelle cette poudre est soluble. La solution pourra être stockée dans un récipient maintenu sous pression par un gaz propulsif. Par ailleurs la poudre pourra être constituée de bicarbonate de sodium et le liquide pourra alors être constitué d'une solution d'acide citrique, notamment une solution dans l'eau dont la concentration sera d'environ 4% en poids. La présente invention a également pour objet un dispositif d'entretien et de nettoyage des conduits d'un polisseur dentaire véhiculant une poudre de polissage des surfaces dentaires, caractérisé en ce qu'il comporte : - des moyens de mise sous pression d'un liquide se comportant vis-à-vis de ladite poudre comme un solvant, - des moyens aptes à canaliser ce liquide vers les conduits du polisseur. Les moyens de mise sous pression pourront être constitués d'un récipient du type "bombe aérosol" contenant ledit liquide et un gaz propulseur. Ce récipient pourra être pourvu d'un embout apte à s'adapter de façon étanche dans une cavité en communication avec ledit conduit du polisseur . Préférentiellement l'extrémité de l'embout sera pourvue d'une rainure annulaire recevant un joint torique d' étanchéité . Dans un mode de mise en oeuvre particulièrement intéressant de l'invention la poudre sera constituée de bicarbonate de sodium et le liquide solvant comprendra de l'acide citrique, préférentiellement une solution dans l'eau de celui-ci. La concentration en acide citrique dans l'eau pourra être de l'ordre de 4% en poids. Les moyens de nettoyage suivant l'invention présentent l'avantage de ne pas faire appel à des systèmes mécaniques si bien qu'ils respectent l'intégrité des différents conduits véhiculant la poudre de polissage. On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel : La figure 1 est une vue schématique d' un aéropolisseur et de ses moyens d'alimentation en eau et en matière pulvérulente de polissage. La figure 2 est une vue en coupe longitudinale partielle de la partie postérieure de l' aéropolisseur représenté sur la figure 1 suivant la ligne II-II de la figure 3. La figure 3 est une vue de la partie postérieure de l' aéropolisseur représenté sur la figure 2. La figure 4 est une vue partielle en coupe axiale des moyens de nettoyage de conduits appliqués à l' aéropolisseur représenté sur les figures 2 et 3. La figure 5 est une vue partielle en coupe axiale à échelle agrandie de la connexion entre les moyens de nettoyage et la partie postérieure de l' aéropolisseur . La figure 6 est une vue en coupe axiale partielle d'une variante de mise en oeuvre de la présente invention. On a représenté de façon schématique sur la figure 1 une pièce à main dentaire 1 de type aéropolisseur. La partie postérieure la de cet aéropolisseur est pourvue de deux conduits d'alimentation 2a et 2b qui sont respectivement reliés par des conduits souples 3a et 3b, d'une part à un récipient 5 contenant un matériau de polissage pulvérulent 7 constitué, dans le cas présent, de bicarbonate de sodium et d'autre part, par un tuyau 3b à une alimentation en eau sous pression. Ainsi que mentionné précédemment, il se forme, en cours d'usage de l'appareil, des agglomérats de matière pulvérulente se déposant, d'une part, dans le conduit interne 2a de l' aéropolisseur et d'autre part dans le tuyau d'alimentation 3a de celui-ci. Suivant l'invention on a réalisé une solution d'acide citrique dans de l'eau sous une concentration d'au moins 4% en poids d'acide citrique et cette solution a été introduite dans un récipient 9 de type "bombe aérosol". Ce récipient, qui est mis intérieurement sous pression au moyen d'un gaz, tel que par exemple de l'azote, comporte une tête 11 pourvue, à sa base, d'un conduit 13 plongeant dans la solution 8 et à sa partie externe d'une buse 15 dont le diamètre est légèrement inférieur à celui du conduit 2a de l' aéropolisseur et sa partie extrême est pourvue d'un joint torique d' étanchéité 17. De façon connue, et non représentée sur le dessin, la tête 11 est pourvue de moyens d'obturation 19 tels que lorsqu'on exerce une pression P sur celle-ci, les moyens d'obturation sont occultés, permettant la projection par le canal central 18 de la buse 15 la solution 8 contenu dans le récipient 9. L'utilisateur pourra ainsi de façon périodique procéder au nettoyage préventif du conduit 2a de son polisseur ou au débouchage de ce conduit lorsque les agglomérats sont tels qu'ils perturbent l'écoulement normal du matériau pulvérulent de polissage. En cours d'utilisation, les agglomérats peuvent également se former dans le tuyau souple 3a reliant le récipient 5 à l' aéropolisseur 1 et l'utilisateur pourra également pour procéder au nettoyage de celui-ci, faire appel au récipient 9. Pour ce faire, on pourra prévoir un embout adaptateur 20 dont la partie antérieure possédera un diamètre adapté à sa mise en place étanche dans le tuyau souple 3a et une partie postérieure creusée d'un évidement 21 apte à recevoir la buse 15 du récipient 9. On pourrait bien entendu faire appel suivant l'invention à tout autre moyen permettant de propulser sous pression le liquide de nettoyage aussi bien dans le tuyau souple 3a que dans le conduit 2a du polisseur, et notamment à des moyens de pulvérisation de type manuel. The present invention relates to a method and a device for cleaning and maintaining the polishing apparatus used in the field of dentistry for cleaning dental surfaces by spraying thereon with a polishing powder. . Numerous air polishers are thus known, which mostly use pneumatic means capable of projecting onto the dental surfaces a flow formed of fine particles of baking soda surrounded by a flow of annular water. It has been found that all of the devices of this type have the recurrent drawback of seeing all of their conduits gradually clog over time under the effect of the formation of agglomerates made up of the mixture of the powder with the humidity of the propellant air. These agglomerates form first of all in the recessed areas of the ejection nozzle and the supply pipes of the polisher, then end up, over time, ensuring an almost total clogging of the nozzle as well as the pipes of powder supply thereof. Unclogging the main pipe of the nozzle carrying the abrasive powder is a particularly delicate operation to perform because of its very small diameter (of the order of 0.6 mm). To do this, it has been proposed to use, as a swab, a very fine metallic wire which is introduced through this conduit and which is animated back and forth to inside of it. It has been found that, in the case of certain types of agglomerates, the wire, in particular because of its small diameter, lacks rigidity and tends to slip away from the agglomerates, so that it cannot ensure effectively the unblocking of conduits. It has also been found, in the end pieces thus treated, that the back and forth movements of the metal wire had the effect of creating in the areas concerned micro-grooves thus forming, for the future, attachment areas favoring the formation new agglomerates. The present invention aims to provide a means for cleaning, both preventively and curatively, the various conduits used to convey, in the polishers the polishing powder. The present invention thus relates to a method for maintaining and cleaning the conduits of a dental polisher of the type capable of spraying under pressure a polishing powder on a dental surface, characterized in that it comprises an operational phase consisting of injecting under pressure into at least some of the circulation conduits of said powder a solution in which this powder is soluble. The solution can be stored in a container kept under pressure by a propellant gas. Furthermore, the powder may consist of sodium bicarbonate and the liquid may then consist of a solution of citric acid, in particular a solution in water, the concentration of which will be approximately 4% by weight. The present invention also relates to a device for maintaining and cleaning the conduits of a dental polisher conveying a powder for polishing dental surfaces, characterized in that it comprises: - means for pressurizing a liquid behaving with respect to said powder as a solvent, - means capable of channeling this liquid towards the pipes of the polisher. The pressurizing means may consist of a container of the "aerosol can" type containing said liquid and a propellant gas. This container may be provided with a nozzle capable of fitting in a sealed manner in a cavity in communication with said duct of the polisher. Preferably, the end of the end piece will be provided with an annular groove receiving an O-ring seal. In a particularly advantageous embodiment of the invention, the powder will consist of sodium bicarbonate and the solvent liquid will comprise citric acid, preferably a solution in water thereof. The concentration of citric acid in water may be of the order of 4% by weight. The cleaning means according to the invention have the advantage of not using mechanical systems so that they respect the integrity of the various conduits conveying the polishing powder. An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing in which: Figure 1 is a schematic view of an air polisher and its means for supplying water and pulverulent polishing material. Figure 2 is a partial longitudinal sectional view of the rear part of the air polisher shown in Figure 1 along line II-II of Figure 3. Figure 3 is a view of the rear part of the air polisher shown in Figure 2. Figure 4 is a partial view in axial section of the duct cleaning means applied to the air polisher shown in Figures 2 and 3. Figure 5 is a partial view in axial section on an enlarged scale of the connection between the cleaning means and the rear part of the air polisher. Figure 6 is a partial axial sectional view of an alternative embodiment of the present invention. FIG. 1 shows schematically a dental handpiece 1 of the air polisher type. The rear part 1a of this air polisher is provided with two supply conduits 2a and 2b which are respectively connected by flexible conduits 3a and 3b, on the one hand to a container 5 containing a pulverulent polishing material 7 constituted, in the case present, sodium bicarbonate and secondly, through a pipe 3b to a pressurized water supply. As mentioned previously, in the course of use of the apparatus, agglomerates of pulverulent material are deposited, on the one hand, in the internal duct 2a of the air polisher and on the other hand in the pipe d 'feed 3a thereof. According to the invention, a solution of citric acid was produced in water at a concentration of at least 4% by weight of citric acid and this solution was introduced into a container 9 of the "aerosol can" type. This container, which is pressurized internally by means of a gas, such as for example nitrogen, comprises a head 11 provided, at its base, with a conduit 13 immersed in the solution 8 and at its external part a nozzle 15 whose diameter is slightly smaller than that of the duct 2a of the air polisher and its end part is provided with an O-ring seal 17. In a known manner, and not shown in the drawing, the head 11 is provided with closure means 19 such that when a pressure P is exerted on it, the closure means are concealed, allowing the projection through the central channel 18 of the nozzle 15 the solution 8 contained in the container 9 The user can thus periodically carry out preventive cleaning of the pipe 2a of his polisher or unclogging this pipe when the agglomerates are such that they disturb the normal flow of the pulverulent polishing material. In use, the agglomerates can also form in the flexible pipe 3a connecting the container 5 to the air polisher 1 and the user may also, to clean the latter, call on the container 9. To do this , an adapter end piece 20 may be provided, the front part of which will have a diameter suitable for its watertight positioning in the flexible pipe 3a and a rear part hollowed out with a recess 21 capable of receiving the nozzle 15 of the container 9. It could well be heard call according to the invention to any other means to propel under pressure the cleaning liquid both in the flexible pipe 3a and in the pipe 2a of the polisher, and in particular to manual type spraying means.

Claims

REVENDICATIONS 1.- Procédé d'entretien et de nettoyage des conduits (2a, 3a) d'un polisseur dentaire (1) du type apte à projeter sous pression une poudre de polissage (7) sur une surface dentaire, caractérisé en ce qu'il comprend une phase opératoire consistant à injecter sous pression, dans au moins certains des conduits de circulation (2a, 3a) de ladite poudre (7), une solution (8) dans laquelle cette poudre (7) est soluble. 2.- Procédé suivant la revendication 1, caractérisé en ce que la solution (8) est stockée dans un récipient (9) maintenu sous pression par un gaz propulsif. 3.- Procédé suivant l'une des revendications 1 ou 2, caractérisé en ce que la poudre est constituée de bicarbonate de sodium et le liquide est constitué d'une solution d'acide citrique. 4.- Procédé suivant la revendication 3, caractérisé en ce que la concentration d'acide citrique dans l'eau est d'environ 4% en poids. 5.- Dispositif d'entretien et de nettoyage des conduits (2a, 3a) d'un polisseur dentaire (1) véhiculant une poudre (7) de polissage des surfaces dentaires, caractérisé en ce qu'il comporte : - des moyens (9) de mise sous pression d'un liquide (8) se comportant vis-à-vis de ladite poudre (7) comme un solvant, - des moyens aptes à canaliser ce liquide vers les conduits (2a, 3a) du polisseur (1). 6.- Dispositif suivant la revendication 5, caractérisé en ce que les moyens de mise sous pression sont constitués d'un récipient aérosol (9) contenant ledit liquide (8) et un gaz propulseur. 7.- Dispositif suivant l'une des revendications 5 ouCLAIMS 1.- Method for maintenance and cleaning of the conduits (2a, 3a) of a dental polisher (1) of the type capable of spraying under pressure a polishing powder (7) on a dental surface, characterized in that it comprises an operational phase consisting in injecting under pressure, into at least some of the circulation conduits (2a, 3a) of said powder (7), a solution (8) in which this powder (7) is soluble. 2.- Method according to claim 1, characterized in that the solution (8) is stored in a container (9) maintained under pressure by a propellant gas. 3.- Method according to one of claims 1 or 2, characterized in that the powder consists of sodium bicarbonate and the liquid consists of a solution of citric acid. 4.- Method according to claim 3, characterized in that the concentration of citric acid in water is about 4% by weight. 5.- Device for maintaining and cleaning the conduits (2a, 3a) of a dental polisher (1) conveying a powder (7) for polishing dental surfaces, characterized in that it comprises: - means (9 ) pressurizing a liquid (8) behaving towards said powder (7) as a solvent, - means capable of channeling this liquid towards the conduits (2a, 3a) of the polisher (1) . 6.- Device according to claim 5, characterized in that the pressurizing means are constituted an aerosol container (9) containing said liquid (8) and a propellant. 7.- Device according to one of claims 5 or
6, caractérisé en ce que le récipient (9) est pourvu d'un embout (15) apte à s'adapter de façon étanche dans une cavité (2a) en communication avec ledit conduit du polisseur. 8.- Dispositif suivant la revendication 7, caractérisé en ce que l'extrémité de l'embout est pourvue d'une rainure annulaire recevant un joint torique d'étanchéité (17). 9.- Dispositif suivant l'une des revendications 5 à 8, dans lequel ladite poudre est constituée de bicarbonate de soude, caractérisé en ce que le liquide solvant comprend de l'acide citrique. 10.- Dispositif suivant la revendication 9, caractérisé en ce que ledit liquide est constitué d'une solution d'acide citrique dans l'eau. 11.- Dispositif suivant la revendication 10, caractérisé en ce que la solution contient environ 4% en poids d'acide citrique. 6, characterized in that the container (9) is provided with a nozzle (15) capable of fitting in a sealed manner in a cavity (2a) in communication with said duct of the polisher. 8.- Device according to claim 7, characterized in that the end of the endpiece is provided with an annular groove receiving an O-ring seal (17). 9.- Device according to one of claims 5 to 8, wherein said powder consists of baking soda, characterized in that the solvent liquid comprises citric acid. 10.- Device according to claim 9, characterized in that said liquid consists of a solution of citric acid in water. 11.- Device according to claim 10, characterized in that the solution contains about 4% by weight of citric acid.
EP05771003A 2004-05-14 2005-05-13 Method and device for cleaning dental polishers Withdrawn EP1744839A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0405296A FR2870144B1 (en) 2004-05-14 2004-05-14 METHOD AND DEVICE FOR CLEANING DENTAL HANDPIECES
PCT/FR2005/001206 WO2005115645A1 (en) 2004-05-14 2005-05-13 Method and device for cleaning dental polishers

Publications (1)

Publication Number Publication Date
EP1744839A1 true EP1744839A1 (en) 2007-01-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05771003A Withdrawn EP1744839A1 (en) 2004-05-14 2005-05-13 Method and device for cleaning dental polishers

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Country Link
US (1) US20070240763A1 (en)
EP (1) EP1744839A1 (en)
FR (1) FR2870144B1 (en)
WO (1) WO2005115645A1 (en)

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US20110081491A1 (en) * 2009-10-01 2011-04-07 Shell Scape Of Florida, Llc Method and system for coloring sea shells for use as ground cover
EP2931171B1 (en) 2012-12-17 2018-08-15 3M Innovative Properties Company Device for dispensing a dental material with locking mechanism
EP2742897A1 (en) 2012-12-17 2014-06-18 3M Innovative Properties Company Nozzle head, hand piece and powder jet device for applying a dental material
EP2742898A1 (en) 2012-12-17 2014-06-18 3M Innovative Properties Company Powder jet device for dispensing a dental material
CN113842235B (en) * 2021-10-09 2023-04-18 李启超 Dental sandblasting tooth cleaning system

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Also Published As

Publication number Publication date
FR2870144B1 (en) 2006-07-14
FR2870144A1 (en) 2005-11-18
US20070240763A1 (en) 2007-10-18
WO2005115645A1 (en) 2005-12-08

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