WO2021084362A1 - Instrument endodontique pour le remplissage d'une cavité dentaire - Google Patents

Instrument endodontique pour le remplissage d'une cavité dentaire Download PDF

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Publication number
WO2021084362A1
WO2021084362A1 PCT/IB2020/059694 IB2020059694W WO2021084362A1 WO 2021084362 A1 WO2021084362 A1 WO 2021084362A1 IB 2020059694 W IB2020059694 W IB 2020059694W WO 2021084362 A1 WO2021084362 A1 WO 2021084362A1
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WO
WIPO (PCT)
Prior art keywords
pipe
instrument
filling material
internal duct
filling
Prior art date
Application number
PCT/IB2020/059694
Other languages
English (en)
Inventor
Gianluca PLOTINO
Nicola Maria GRANDE
Original Assignee
Plotino Gianluca
Grande Nicola Maria
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 Plotino Gianluca, Grande Nicola Maria filed Critical Plotino Gianluca
Publication of WO2021084362A1 publication Critical patent/WO2021084362A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/50—Implements for filling root canals; Methods or instruments for medication of tooth nerve channels
    • A61C5/55—Implements for filling root canals; Methods or instruments for medication of tooth nerve channels with heating means, e.g. for heating gutta percha
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/62—Applicators, e.g. syringes or guns

Definitions

  • This invention relates to an endodontic instrument for filling a dental cavity and a method for filling a dental cavity.
  • filling elements usually consisting of a material called gutta-percha
  • the dental cavity inside the canals.
  • Said filling elements are then worked by means of a first tool, which deforms the filling elements to make them perfectly adhere to the walls of the dental cavity.
  • the first tool has a hook-shaped profile and comprises a heater, which heats its tip to facilitate deformation of the filling element.
  • Document JP2018535785A shows an example of the first tool.
  • the filling material is injected into the dental cavity by means of a second tool, which comprises a heated tank for keeping the filling material in the fluid state.
  • the tool comprises a pipe having an internal duct configured to convey the filling material into the dental cavity.
  • the aim of this invention is to provide an endodontic instrument for filling a dental cavity and a method for filling a dental cavity which overcome the above-mentioned disadvantages of the prior art.
  • this invention provides an endodontic instrument for filling a dental cavity.
  • the instrument comprises a body.
  • the body is grippable.
  • the body is elongate along a longitudinal axis between a first end and a second end.
  • the instrument comprises a tank.
  • the tank is positioned in a space inside the body.
  • the tank is configured to store a filling material.
  • the instrument comprises a pipe.
  • the pipe is elongate between a first end and a second end.
  • the first end is connected to the first end of the body.
  • the second end is positioned at a distance from the body to facilitate access to the dental cavity.
  • the pipe comprises an internal duct.
  • the internal duct defines an injecting path.
  • the internal duct extends between a first opening and a second opening.
  • the first opening is made onto the tank, to receive the filling material.
  • the second opening opens onto an environment outside the pipe, to inject the filling material into the dental cavity.
  • the pipe includes a first portion.
  • the first portion of the pipe extends from the first end of the pipe along a first axis.
  • the pipe comprises a second portion.
  • the second portion extends as far as the second end of the pipe along a second axis.
  • the first axis and the second axis are angled relative to each other by an operating angle.
  • the operating angle may vary in a range of between 0 degrees and 180 degrees.
  • the operating angle may vary in a range of between 10 degrees and 170 degrees.
  • the operating angle may vary in a range of between 20 degrees and 160 degrees.
  • the operating angle may vary in a range of between 20 degrees and 120 degrees. In one embodiment, the operating angle may vary in a range of between 30 degrees and 100 degrees. In one embodiment, the operating angle may vary in a range of between 45 degrees and 90 degrees.
  • the first axis is angled relative to the longitudinal axis.
  • the pipe protrudes from the first end of the body out of alignment with the body.
  • the pipe has curved profile (that is to say, hook-shaped, or bent, or L-shaped).
  • the instrument comprises a heater.
  • the heater is configured to heat the pipe.
  • the heater is positioned on the pipe to heat it.
  • the heater is external to the body of the instrument ed it is in direct contact with the pipe. In one embodiment, the heater is located in spaces obtained inside the body of the pipe. In one embodiment, the heater is wrapped around the pipe, for example but not limitedly, inside tracks which surround an external surface of the pipe.
  • This embodiment is very advantageous because allows to keep the filling material liquid until it reaches the extremity of the pipe which is proximal to the tooth, that is until when the filling material comes out of the pipe. This avoids the creation of plugs in the pipe besides the fact that the instrument requires less power to provides the filling material, which reduces its viscosity as the temperature increase.
  • the heater in a zone positioned at a distance from the pipe and ensure that the pipe is heated by heat conduction (or other known thermal transfer phenomena).
  • the presence of the heater melts the filling element and makes it easier to shape.
  • the pipe comprises a packing configuration.
  • the pipe is configured to be able to pack (that is to say, deform, that is to say, mould) a filling element.
  • the second end of the pipe is a pushing tip.
  • the pushing tip is solid.
  • the pushing tip is stiff, in such a way as to deform the filling element positioned in the dental cavity. The fact that the pushing tip does not comprise holes gives it a stiffness such that it can deform the filling element.
  • the heater in the packing configuration, is configured to heat the pushing tip. This characteristic makes it easier to deform the filling element.
  • the heater extends to the pushing tip, to keep it at a predetermined deformation temperature.
  • Said deformation temperature allows a greater deformability of the filling element which is already placed into the dental cavity. This feature requires a complex design of the instrument which is nevertheless justified by a very sensible advantage, that is the possibility to deform the filling element also after the placement into the dental cavity, so that a wrong placement of the filling element can be adjusted also in a second step.
  • the concept which distinguishes this invention from the prior art is that the fluid material which comes out of the above-mentioned pipe at the same moment in which it is heating and compressing the part of material already present in the canal, itself acts as a compressing element, since it applies a compressing force on a plastic material at the same moment in which it is still in the fluid state. Indeed, in the prior art solutions, that compression of the filling element occurred on material already in the solid state.
  • the filling element is gutta-percha (gutta-percha is a type of filling material known in the reference sector of this invention), but it may also be other materials.
  • the pipe comprises an injecting configuration.
  • the pipe In the injecting configuration, the pipe is configured to inject the filling material into the dental cavity, through the second opening of the internal duct.
  • the pipe comprises an occluding element.
  • the occluding element is movable between an activated position and a deactivated position. In the activated position, the occluding element inhibits a passage of the filling material. In the activated position, the occluding element stiffens the pipe. In the activated position, the occluding element defines the pushing tip of the pipe. In the deactivated position, the pipe allows an injection of the filling material through the second opening of the internal duct.
  • the occluding element in the pipe injecting configuration, is in the deactivated position. In one embodiment, in the pipe packing configuration, the occluding element is in the activated position.
  • the occluding element is a flexible rod. In that embodiment, the flexible rod is movable inside the internal duct, or at least partly inside the internal duct. The flexible rod is movable between a retracted position and an extracted position. In the retracted position, the flexible rod allows the passage of the filling material through (the second opening of) the internal duct. In the extracted position, the flexible rod fills the internal duct to define the pushing tip of the pipe.
  • the occluding element is an inflatable element.
  • the inflatable element is movable between an inflated configuration and a deflated configuration.
  • the inflatable element In the inflated position, the inflatable element at least partly fills the internal duct to define the pushing tip of the pipe.
  • the inflatable element In the deflated configuration, the inflatable element allows the passage of the filling material through (the second opening of) the internal duct.
  • the pipe includes a lateral surface.
  • the lateral surface surrounds, entirely or partly, the internal duct.
  • the pipe comprises an operating surface.
  • the operating surface is positioned at the second end of the pipe.
  • the operating surface is included in the pushing tip and is configured to make contact with the filling element so as to shape it.
  • the second opening of the internal duct is made onto the lateral surface of the pipe.
  • this invention provides a method for filling a dental cavity.
  • the method comprises a step of preparing a body, elongate along a longitudinal axis between a first end and a second end.
  • the method comprises a step of preparing a tank, positioned in a space inside the body.
  • the method comprises a step of preparing a pipe, elongate between a first end, connected to the first end of the body, and a second end, positioned at a distance from the body.
  • the method comprises a step of storing a filling material in the tank.
  • the method comprises a step of injecting filling material into the dental cavity, through an internal duct of the pipe.
  • the method comprises a deforming step, in which the pipe is pressed against a filling element positioned in the dental cavity, to deform it and to make it adhere to internal walls of the dental cavity.
  • the filling material and the filling element are products made of thermoplastic material, for example but not limited to “gutta-percha”, that is to say, made of rubbery material having specific characteristics known to experts in the sector.
  • the method comprises a heating step.
  • the pipe is heated by a heater, to facilitate the deforming step.
  • the heater directly heats the pipe because it is positioned on the pipe.
  • the heating step comprises a thermal transfer step, in which the heat is transferred from the heater to the pipe.
  • the pipe injects the filling material along a line which is angled relative to the longitudinal axis of the body. In one embodiment, during the injecting step, the pipe injects the filling material along a first axis and receives the filling material from the body along a second axis, which is angled relative to the first axis.
  • the method comprises a reconfiguring step.
  • an occluding element is shifted between an activated position and a deactivated position.
  • the occluding element is interposed in the internal duct in such a way as to at least partly occlude it. In that way, the occluding element increases the stiffness of the pipe, which is necessary in order to perform the deforming step.
  • the occluding element is shifted in such a way as to allow a flow of the filling material through the internal duct and in such a way as to increase the flexibility of the pipe, so as to perform the injecting step.
  • FIG. 2A and 2B schematically illustrate a first configuration and a second configuration of a pipe of the instrument of Figure 1 ;
  • FIG. 3 schematically illustrates a detail of a pipe of an embodiment of the instrument of Figure 1 ;
  • FIG. 4 schematically illustrates an embodiment of the instrument of Figure 1 ;
  • FIG. 5 schematically illustrates an embodiment of the instrument of Figure 1 ;
  • FIG. 6A and 6B schematically illustrate a first configuration and a second configuration of an embodiment of the pipe of the instrument of Figure 1 ;
  • FIG. 7 schematically illustrates an embodiment of the pipe of the instrument of Figure 1.
  • the number 1 indicates an endodontic instrument for filling a dental cavity.
  • the instrument 1 is configured to fill the dental cavity preferably with a material known to experts in the sector, called “gutta-percha”, which, when subjected to heat, melts so that it can be deformed more easily.
  • the instrument 1 comprises a body 2.
  • the body 2 is grippable by an operator for using the instrument 1.
  • the body 2 comprises an outside surface 20, which preferably comprises a grip zone defining a grippable zone of the body.
  • the body 2 comprises an internal space 21.
  • the body 2 extends along a longitudinal axis L, between a first end 2A and a second end 2B.
  • the grippable zone of the body is preferably near the second end 2B of the body 2.
  • the body 2 comprises a coupling zone 22, preferably positioned at its first end 2A.
  • the coupling zone 22 includes one or more of the following characteristics: a male thread (external thread), a female thread (internal thread), a grooved profile extending along the longitudinal line L, a circumferential channel which extends along the outside surface 20 of the body 2.
  • the body 2 has variable dimensions along the longitudinal axis L. In particular, it is preferable that the dimensions of the body 2 decrease in the direction oriented from the second end 2A to the first end 2B. Therefore, in one embodiment, the body 2 comprises a first portion 23, having a substantially cylindrical shape, and a second portion 24, having a substantially frustoconical shape.
  • the instrument 1 comprises a tank 3.
  • the tank 3 is configured to store the filling material (preferably gutta-percha).
  • the tank 3 is configured to keep the filling material in a fluid state. Therefore, in one embodiment, the tank 3 is heated.
  • the tank 3 is positioned inside the internal space 21 of the body 2.
  • the instrument comprises an operating head 4.
  • the operating head 4 is configured to interface with the dental cavity and to perform the filling operations.
  • the operating head 4 is configured to inject the filling material. In one embodiment, the operating head 4 is configured to deform and make adhere a filling element positioned inside the dental cavity.
  • the operating head 4 comprises a coupler 41.
  • the coupler 41 is connected to the coupling zone 22 of the body 2 (that is to say, to the first end 2A of the body 2). Therefore, depending on the embodiment of the coupling zone 22, the coupler 41 comprises a male thread (external thread) and/or a female thread (internal thread) and/or a grooved profile extending along the longitudinal line L and/or a pin configured to connect with the circumferential channel of the coupling zone 22 of the body 2.
  • the operating head 4 comprises a pipe 42.
  • the pipe 42 is configured to inject the filling material.
  • the pipe 42 is configured to deform and make adhere a filling element positioned inside the dental cavity.
  • the pipe 42 is (selectively) in fluid communication with the tank 3, to receive the filling material from the latter.
  • the pipe 42 is elongate between a first end 42A and a second end 42B.
  • the pipe 42 comprises an internal duct 421 , which is (selectively) fluidly connected to the tank 3.
  • the internal duct 421 opens onto (is connected to) the tank 3 at a first opening 421 A.
  • the internal duct 421 opens onto an environment outside the instrument 1 (for example the dental cavity) at a second opening 421 B.
  • the pipe includes a first portion 422.
  • the first portion 422 extends from the first end 42A of the pipe 42 along a first axis A1.
  • the pipe 42 includes a second portion 423.
  • the second portion 423 of the pipe 42 extends as far as the second end 42B of the pipe 42 along a second axis A2.
  • first axis A1 and the second axis A2 are angled relative to each other by an operating angle AO.
  • the pipe comprises a lateral surface S1 , surrounding the internal duct 421.
  • the pipe comprises an operating surface, positioned at the second end 42B of the pipe 42.
  • the operating surface S2 is substantially perpendicular to the lateral surface S1.
  • the second opening 421 B of the internal duct 421 is made onto the lateral surface S1 of the pipe 42.
  • the second opening 421 B of the internal duct 421 is made onto the lateral surface at an operating distance DO from the second end 42B of the pipe 42, in such a way as to define on the second end 42B of the pipe 42 a solid pushing tip 42B’, which is solid and has a stiffness such that it can deform the filling elements in the dental cavity.
  • the pipe 42 comprises an occluding element 424.
  • the occluding element 424 is configured to at least partly occlude the internal duct 421.
  • the occluding element 424 is configured to be inserted in the internal duct and to increase the stiffness of the pipe 421.
  • the occluding element 424 is movable between an activated position P1 , in which it inhibits a passage of the filling material and defines the pushing tip 42B’ of the pipe 42B, and a deactivated position P2, in which it allows an injection of the filling material through the second opening 421 B of the internal duct 421.
  • occluding element 424 may be made in various forms.
  • the occluding element 424 is a rod 425.
  • the pipe 42 comprises a slide groove 426.
  • the slide groove 426 is made in the pipe 42.
  • the slide groove 426 extends parallel to the internal duct 421 (parallel to a part of the internal duct 421 which is made in the first portion 422 of the pipe 42).
  • the slide groove 426 opens onto the internal duct 421 in a connector 426’.
  • the rod 425 is positioned inside the slide groove 426.
  • the rod 425 is movable inside the slide groove for entering and exiting the slide groove 426 towards the internal duct 421 passing through the connector 426’.
  • the rod 425 is movable inside the slide groove 426 between a retracted position PR and an extracted position PE.
  • the rod 425 In the retracted position PR, the rod 425 is preferably entirely positioned in the slide groove 426. Therefore, the rod 425 allows the passage of the filling material through the second opening 421 B of the internal duct 421.
  • the rod In the extracted position PE, the rod is at least partly contained inside the internal duct 421. In that way, the rod fills the internal duct 421 to define the pushing tip 42B’ of the pipe 42.
  • the rod 425 in the extracted position PE, is positioned in a part of the internal duct 421 made in the second portion 423 of the pipe 42.
  • the rod 425 has a flexibility such that it can deform for sliding along a broken line defined by the axis A1 and by the axis A2 (that is to say, to slide inside the pipe 42 which is not linear).
  • the occluding element 424 is an inflatable element 427.
  • the inflatable element 427 is positioned inside the internal duct 421.
  • the inflatable element 427 is positioned in a part of the internal duct 421 made in the second portion 423 of the pipe 42.
  • the inflatable element 427 is movable between an inflated configuration CG, in which it at least partly fills the internal duct 421 to define the pushing tip 42B’ of the pipe 42, and a deflated configuration CS, in which it allows the passage of the filling material through the second opening 421 B of the internal duct 421. It should be noticed that said embodiment allows adjustment of the stiffness of the pipe 42. Indeed, by adjusting an inflating pressure of the inflatable element 427, it is possible to vary the stiffness of the pipe 42.
  • the instrument 1 comprises an activating system 5.
  • the activating system 5 is configured to operate the occluding element 424.
  • the activating system 5 is configured to shift the occluding element 424 between the activated position P1 and the deactivated position P2.
  • the activating system 5 may be made in corresponding variants.
  • the activating system 5 preferably comprises a reciprocating-motion actuator, configured to perform strokes along the longitudinal line L.
  • the activating system 5 comprises a sliding block 51 and a guide 52.
  • the guide 52 is positioned inside the body 2.
  • the guide 52 extends along the longitudinal line L.
  • the sliding block 51 is connected to the guide 52 for sliding on it along the longitudinal line L.
  • the sliding block 51 is rigidly connected to the rod 425, in such a way that a movement of the sliding block is transferred into a shifting of the rod 425 along the longitudinal line L.
  • the rod 425 is operated manually.
  • the sliding block 51 protrudes from the body 2 through a channel. In that way, an operator can shift the sliding block 51 along the longitudinal line L manually.
  • the sliding block 51 may be electrically or pneumatically operated, controlled by a control unit of the instrument 1.
  • the activating system 5 comprises a compressor 53.
  • the compressor 53 is connected to the inflatable element 427 for blowing compressed air into it.
  • the compressor 53 is configured to also act as a pressure discharge valve, for passing from the inflated configuration CG to the deflated configuration CS.
  • the instrument 1 comprises a heater 6.
  • the heater 6 is configured to heat the pipe 42.
  • the heater 6 is positioned inside the internal space 20 of the body 2. In a preferred embodiment, the heater 6 is positioned on the pipe 42.
  • the heater 6 comprises a heating element, configured to heat the pipe 42.
  • said heating element passes through the pipe 42 to heat it more efficiently.
  • the heating element heats a conducting element, which in turn heats the pipe 42.
  • the heater 6 is configured to heat the tank 3, so as to keep the filling material in the fluid/viscous state.
  • this invention intends to protect further embodiments of the instrument 1.
  • the instrument 1 comprises a first tool 101 and a second tool 102, each comprising a respective first end 101 A, 102A, near the body 2, and a respective second end 101 B, 102B, at a distance from the body 2.
  • the first tool 101 is configured to inject the filling material into the dental cavity.
  • the first tool 101 defines the internal duct 421.
  • the first tool 101 is in fluid communication with the tank 3.
  • the second tool 102 is configured to deform the filling elements positioned in the dental cavity.
  • the second tool 102 defines the pushing tip 42B’.
  • the second tool 102 is connected to the heater 6 so that it is heated during deformation of the filling elements.
  • Each tool, the first and the second 101, 102 comprises a respective coupler, for connecting the first and the second tool 101 , 102 to the body 2.
  • each tool, the first and the second 101 , 102 is positioned on a respective operating head 4. Therefore, the instrument is configured to use different operating heads 4 on the same body 2. Basically, in order to fill the dental cavity, the first tool 101 is first mounted on the body 2, then removed to allow mounting of the second tool 102.
  • the body 2 comprises an additional coupling zone 22’.
  • the additional coupling zone 22’ is connected to the coupler of the second tool 102.
  • the coupling zone 22 is connected to the coupler of the first tool 101.
  • the grippable zone of the body 2 is positioned between the coupling zone 22 and the additional coupling zone 22’.
  • the instrument 1 in order to be able to perform injecting or deforming.
  • the first tool 101 and the second tool 102 are positioned on the same operating head 4, which is connected to the coupling zone 22 of the body 2.
  • the first tool 101 and the second tool 102 are positioned alongside each other.
  • the second end 101 B of the first tool 101 is at a distance, along the longitudinal line L, from the second end 102B of the second tool 102, so as to allow each tool to work without being obstructed by the other tool.
  • the instrument comprises a control unit, configured to control operating parameters, including one or more of the following parameters:
  • the instrument 1 comprises a user interface 7, preferably a display 7, configured to send control signals to the control unit of the instrument 1 , representing operating parameters which are to be set in the instrument.
  • the control unit is configured to control the instrument 1 depending on the control signals.
  • this invention provides a method for filling a dental cavity.
  • the method comprises a step of preparing an instrument 1 comprising a body 2, a tank 3 and a pipe 42.
  • the method comprises a step of storing a filling material in the tank.
  • the filling material is made of “gutta-percha”.
  • the method comprises a step of heating the tank 3, in particular heating the filling material inside the tank 3, so as to keep it in the fluid/viscous state.
  • the method comprises a step of injecting the filling material into the dental cavity, through an internal duct 421 of the pipe 42.
  • the method comprises a deforming step, in which the pipe 42 is pressed against a filling element positioned in the dental cavity. Therefore, the deforming step and the injecting step is performed with the same element, that is to say, the pipe 42.
  • the method comprises a coupling step, in which a coupler 41 of an operating head 4 is connected to a coupling zone 22 of the body 2.
  • the filling material passes through an internal duct 421 of the pipe 42.
  • the filling material passes through a part of the internal duct 421 made in a first portion of the pipe 422, circulating along a line parallel to a first axis A1.
  • the filling material passes through a part of the internal duct 421 made in a second portion 423 of the pipe, circulating along a line parallel to a second axis A2, which is angled relative to the first axis A1. Therefore, the method comprises a step of diverting the filling material in the internal duct.
  • the deforming step is performed by means of a solid pushing tip 42B’, which is solid and has a stiffness such that it can deform the filling elements in the dental cavity.
  • the method comprises an occluding step, in which an occluding element 424 at least partly occludes the internal duct 421.
  • the occluding element 424 is inserted in the internal duct and increases the stiffness of the pipe 421.
  • the occluding element 424 is shifted between an activated position P1 , in which it inhibits a passage of the filling material and defines the pushing tip 42B’ of the pipe 42B, and a deactivated position P2, in which it allows an injection of the filling material through the second opening 421 B of the internal duct 421.
  • the occluding step comprises a step of sliding the occluding element 424, which comprises a flexible rod 425. During the sliding step, the rod 425 slides in a slide groove 426.
  • the rod 425 is shifted inside the slide groove.
  • the rod enters and exits the slide groove 426 towards the internal duct 421 passing through a connector 426’, which connects the slide groove 426 to the internal duct 421.
  • the rod 425 is shifted inside the slide groove 426 between a retracted position PR and an extracted position PE.
  • the rod 425 In the retracted position PR, the rod 425 allows the passage of the filling material through the second opening 421 B of the internal duct 421.
  • the rod fills the internal duct 421 to define the pushing tip 42B’ of the pipe 42.
  • the rod 425 bends and deforms to slide along a broken line defined by the axis A1 and by the axis A2 (that is to say, to slide inside the pipe 42 which is not linear).
  • the method comprises an inflating step.
  • the inflatable element 427 which is positioned inside the internal duct 421 , is shifted between an inflated configuration CG, in which it at least partly fills the internal duct 421 to define the pushing tip 42B’ of the pipe 42, and a deflated configuration CS, in which it allows the passage of the filling material through the second opening 421 B of the internal duct 421.
  • the inflating step comprises a pressure adjusting step, during which the inflating pressure of the inflatable element 427 is adjusted to vary the stiffness of the pipe 42.
  • the method comprises an activating step, in which an activating system 5 operates (activates, shifts) the occluding element 424.
  • an activating system 5 operates (activates, shifts) the occluding element 424.
  • the activating system 5 shifts the occluding element 424 between the activated position P1 and the deactivated position P2.
  • the activating system 5 comprises a reciprocating- motion actuator which performs strokes along the longitudinal line L.
  • the activating system 5 comprises a sliding block 51 and a guide 52.
  • the sliding block 51 slides along the guide 52 along the longitudinal line L.
  • the sliding block 51 is rigidly connected to the rod 425, therefore, when the sliding block shifts it also shifts the rod 425.
  • the activating step is manual.
  • the sliding block 51 protrudes from the body 2 through a channel and an operator shifts the sliding block 51 along the longitudinal line L manually.
  • the activating step is automatic or controlled by means of a control unit of the instrument 1.
  • the activating system 5 comprises a compressor 53, which blows compressed air into the inflatable element 427.
  • the compressor 53 also acts as a pressure discharge valve, for passing from the inflated configuration CG to the deflated configuration CS.
  • the method comprises a heating step. During the heating step, a heater 6 heats the pipe 42, preferably directly.
  • the heater 6 comprises a heating element, configured to heat the pipe 42.
  • this invention intends to protect further embodiments of the instrument 1.
  • the method comprises a changing step.
  • the first tool 101 is swapped with the second tool 102.
  • the first tool 101 injects the filling material into the dental cavity.
  • the second tool 102 deforms the filling elements which are positioned in the dental cavity.
  • the second tool 102 defines the pushing tip 42B’.
  • the second tool 102 is heated to facilitate the deformation of the filling elements.
  • the method comprises an additional coupling step, in which the second tool 102 is coupled to an end of the body 2 opposite that on which the first tool 101 is coupled.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Un instrument endodontique (1) pour le remplissage d'une cavité dentaire, comprend : un corps (2), préhensible et allongé le long d'un axe longitudinal (L) entre une première extrémité (2A) et une seconde extrémité (2B) ; un réservoir (3), configuré pour stocker un matériau de remplissage ; un tuyau (42), allongé entre une première extrémité (42A), reliée à la première extrémité (2A) du corps (2), et une seconde extrémité (2B), positionnée à une certaine distance du corps (2) pour faciliter l'accès à la cavité dentaire. Le tuyau (42) comprend un conduit interne (421), définissant un trajet d'injection et comprenant une première ouverture (421A) sur le réservoir (3), pour recevoir le matériau de remplissage, et une seconde ouverture (421B) sur un environnement à l'extérieur du tuyau (42), pour injecter le matériau de remplissage dans la cavité dentaire. Le tuyau (42) comprend une première partie (422), s'étendant de la première extrémité (42A) du tuyau (42) le long d'un premier axe (A1), et une seconde partie (423), s'étendant jusqu'à la seconde extrémité (42B) du tuyau (42) le long d'un second axe (A2). Le premier axe (A1) et le second axe (A2) sont inclinés l'un par rapport à l'autre par un angle de fonctionnement (AO).
PCT/IB2020/059694 2019-10-29 2020-10-15 Instrument endodontique pour le remplissage d'une cavité dentaire WO2021084362A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000019952 2019-10-29
IT102019000019952A IT201900019952A1 (it) 2019-10-29 2019-10-29 Strumento endodontico per il riempimento di una cavità dentale

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WO2005122944A1 (fr) * 2004-06-16 2005-12-29 Soong Design Limited Appareil pour le traitement de canal radicalaire dentaire
US20060063126A1 (en) * 2004-09-17 2006-03-23 Aloise Carlos A Medical treatment apparatus and needle manufacturing method
US20080044789A1 (en) * 2005-05-16 2008-02-21 Johnson Douglas B System for irrigation of a tooth root canal
KR101211363B1 (ko) * 2011-07-12 2012-12-13 (주)에스덴티 자유각도로 회전 조절이 가능한 치과용 충전기
US9155596B2 (en) * 2009-03-13 2015-10-13 Kaltenbach & Voigt Gmbh Manual device for dispensing a pasty filler

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JP2018535785A (ja) 2015-12-03 2018-12-06 エル．スティーブン ブキャナンＬ． Ｓｔｅｐｈｅｎ Ｂｕｃｈａｎａｎ 根管充填時に使用するための自己発熱式電気充填器／注射針

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005122944A1 (fr) * 2004-06-16 2005-12-29 Soong Design Limited Appareil pour le traitement de canal radicalaire dentaire
US20060063126A1 (en) * 2004-09-17 2006-03-23 Aloise Carlos A Medical treatment apparatus and needle manufacturing method
US20080044789A1 (en) * 2005-05-16 2008-02-21 Johnson Douglas B System for irrigation of a tooth root canal
US9155596B2 (en) * 2009-03-13 2015-10-13 Kaltenbach & Voigt Gmbh Manual device for dispensing a pasty filler
KR101211363B1 (ko) * 2011-07-12 2012-12-13 (주)에스덴티 자유각도로 회전 조절이 가능한 치과용 충전기

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