JP2013052088A - Fixing device and articulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing device for fixing an artificial tooth while preventing break of the artificial tooth, and to provide an articulator including the fixing device and capable of accurately, efficiently, and objectively adjusting the occlusion.SOLUTION: The fixing device 2 for fixing a denture to the articulator includes: a body 21 having a recessed part 211 in which a base of the denture is placed; and balloons 221 and 222 that are provided in the recessed part 211, inflated by a supply of an operating fluid and deflated by discharge of the operating fluid. The fixing device is configured to feed operating fluid to the inside of the balloons 221 and 222 with the base of the denture placed in the recessed part 211, inflate the balloons 221 and 222, and fix the denture therewith.

Description

  The present invention relates to a fixture and an articulator.

  In dental treatment, there is denture treatment to make up for lost natural teeth. Denture treatment refers to, for example, creating a denture (denture) such as a local denture (partial denture) or a full denture (total denture) and covering the gingiva with the created denture, A treatment that supplements your teeth. The denture has a floor to be covered with gingiva and an artificial tooth fixed to the floor, and the local denture further has a clasp or the like.

  In such denture treatment, (1) the compatibility (adhesion and fit) of the denture to the oral mucosa such as the inside of the cheek and the gingiva and (2) the engagement of the denture are very important. It becomes.

  For the adjustment (1), first, a denture with a soft material such as silicon applied to the inner surface of the floor is attached to the patient, and the denture is lightly pressed against the gingiva. As a result, the soft material is sandwiched between the floor and the gingiva, and the surface thereof is deformed according to the shape of the gingiva. Next, the denture is removed, and a portion where the gum is strongly pressed is searched for based on the thickness of the deformed soft material. If you find a part where the floor strongly presses the gingiva, adjust by trimming the inner surface of this part. By repeating such an operation a plurality of times as necessary, a denture with a high compatibility with the oral mucosa (gingiva) is created.

  On the other hand, with regard to the adjustment of (2), first, a patient wearing a denture is engaged with or engaged with carbon paper or the like between upper teeth and lower teeth. The lower jaw is moved left and right with respect to the upper jaw. Next, look at the state of carbon paper ink attached to the artificial denture teeth, and the balance of meshing, specifically, it is meshing with uniform force, or when moving the lower jaw left and right, back and forth, the denture Observe whether or not is stable. If a defect is found, the artificial tooth is shaved and adjusted. By repeating such work a plurality of times as necessary, a suitable denture with a suitable mesh is created.

  Here, the patient may not be able to reproduce normal biting according to the instructions of the dentist due to, for example, being a first-placed denture or tension, and in such a case, adjustment of the bed denture may not be possible. It becomes difficult. In addition to this, it is particularly difficult to adjust a denture for a patient having a disorder such as jaw deformation, abnormal meshing, or dementia.

  Therefore, for example, it is conceivable to adjust the meshing in a state where the plate denture is fixed to an articulator capable of reproducing the meshing of the upper and lower teeth. According to this, since the meshing state can be reproduced with the intention of the dentist, the meshing can be adjusted accurately, efficiently, and objectively.

  The articulator has been well known conventionally, and has, for example, a pair of support plates (an upper support plate and a lower indicator plate) and a connecting portion that connects these and can be bent and deformed in the middle ( For example, see Patent Document 1).

  In such an articulator, for example, when adjusting the meshing of the denture on the lower jaw side, the upper jaw model having the upper tooth shape of the patient is fixed to the lower surface of the upper support plate via a plaster (adhesive). The fixed denture is fixed to the upper surface of the lower support plate through gypsum (adhesive). And it is possible to reproduce the engagement in various states by bending and deforming the connecting portion into a desired shape.

  However, in such an articulator, since the denture is fixed with gypsum, it takes time until the gypsum hardens, and the treatment takes a long time. Have at least the problem of being.

JP 2006-230726 A

  It is an object of the present invention to have a fixture that can fix a denture while preventing the denture from being damaged, and to have the fixture fixed so that the meshing can be accurately and efficiently adjusted objectively. To provide an articulator.

Such an object is achieved by the present inventions (1) to (3) below.
(1) A fixture for fixing a denture on a bite,
A main body having a recess for arranging the floor portion of the denture;
A balloon provided in the recess, inflated by supply of the working fluid, and deflated by discharge of the working fluid;
In the state where the floor portion of the denture is placed in the recess, the working fluid is supplied into the balloon and the balloon is inflated to fix the denture. Fixture characterized by.

(2) The balloon has a first balloon located on the front side of the denture and a second balloon located on the back side of the denture in a state where the denture is arranged in the recess. The fixture according to the above (1) having
(3) An articulator comprising the fixture according to claim 1 or 2.

  According to the present invention, since the denture is clamped and fixed in the recess by pressing the denture with a soft balloon, the denture can be effectively prevented or suppressed from being damaged (damaged, broken, etc.). Further, since the balloon deforms and adheres closely to the surface shape of the denture, the denture can be fixed in a more stable state.

  In addition, since the denture can be fixed without using an adhesive such as plaster as in the past, the act of fixing the denture removed from the patient to the fixture or the denture removed from the fixture is attached to the patient. Acts can be performed quickly. Therefore, the adjustment of the denture meshing can be performed in a shorter time and efficiently. Furthermore, it is not necessary to remove an adhesive such as gypsum, and the risk that the denture is damaged at that time can be avoided.

It is a perspective view which shows suitable embodiment of the articulator of this invention. It is a top view (top view) of the 1st fixing tool which the articulator shown in FIG. 1 has. It is sectional drawing of the 1st fixing tool shown in FIG. It is a top view explaining the method of fixing a mandibular side denture to the 1st fixing tool shown in FIG. It is a top view explaining the method of fixing a mandibular side denture to the 1st fixing tool shown in FIG. It is sectional drawing which shows the state which fixed the lower denture side denture to the 1st fixing tool, and fixed the upper jaw side denture to the 2nd fixing tool.

  Hereinafter, a preferred embodiment of an articulator (an articulator of the present invention) to which a fixture of the present invention is applied will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a preferred embodiment of the articulator of the present invention, FIG. 2 is a plan view (top view) of a first fixture included in the articulator shown in FIG. 1, and FIG. FIG. 4 and FIG. 5 are plan views for explaining a method of fixing the mandibular denture to the first fixing device shown in FIG. 2, and FIG. 6 shows the first fixing device shown in FIG. It is sectional drawing which shows the state which fixed the mandibular side denture to the fixing tool, and fixed the upper jaw side denture to the 2nd fixing tool. In the following, for convenience of explanation, the upper side in FIGS. 1 to 6 is referred to as “upper” and the lower side is also referred to as “lower”.

  The articulator 1 shown in FIG. 1 includes a first fixture 2 (fixing device of the present invention) 2 for fixing the lower denture side denture 100 and a second fixing device (the present invention) for fixing the upper jaw side denture 200. 3) and a connecting portion 4 for connecting the first fixing device 2 and the second fixing device 3 so as to be able to move relative to each other by approximating jaw movement.

  Such an articulator 1 is obtained by meshing the mandibular denture denture 100 fixed to the first fixture 2 and the maxillary denture denture 200 fixed to the second fixture 3. This is a dental treatment device that can reproduce the same meshing as when the is attached to a patient. By using such an articulator 1, it is possible to easily and efficiently adjust the meshing of the mandibular denture 100 and the maxillary denture 200.

  The “bed denture” in the present specification includes at least a local denture (partial denture) and a full denture (total denture). Generally, a complete denture has a floor to be covered with gingiva and an artificial tooth fixed to the floor, and the local denture further has a clasp or the like. In the following, for the convenience of explanation, a complete denture will be described as an example of a complete denture.

Hereinafter, the articulator 1 of this embodiment will be described in detail.
First, the first fixing tool 2 and the second fixing tool 3 will be described. Since these have the same configuration, the first fixing tool 2 will be described as a representative, and the second fixing tool 2 will be described below. The description of the fixture 3 is omitted.

[First fixture]
As shown in FIG. 2 and FIG. 3, the first fixture 2 includes a main body 21 having a recess 211 in which a floor portion (mandible side denture base portion) 110 of the lower jaw side denture 100 is placed (stored). And the balloon 22 provided in the recess 211.

  The main body 21 is a member for supporting and fixing the lower denture base denture 100. The main body 21 is hard and can be made of metal or plastic, for example. Such a main body 21 is formed with a recess 211 that opens on the lower surface thereof.

  The concave portion 211 is a concave portion for arranging the floor portion 110 of the lower denture base denture 100. Therefore, the shape (opening shape and depth) of the concave portion 211 is not particularly limited as long as the floor portion 110 of the lower denture base denture 100 can be disposed (stored). In the present embodiment, the shape of the floor portion 110 is not limited. "U" shape similar to In addition, the shape of the floor part 110 of the mandibular side denture 100 differs with patients. Therefore, in order to give versatility to the first fixture 2, the shape of the recess 211 is preferably a shape that allows the floor 110 of the lower mandibular denture 100 to be disposed based on statistics and experience. .

  A balloon 22 is provided in such a recess 211. The balloon 22 includes a first balloon 221 and a second balloon 222. The first and second balloons 221 and 222 are inflated (inflated) by supplying a working fluid f therein, respectively. On the contrary, it contracts (shrinks) by discharging the internal working fluid f.

  The first balloon 221 has an elastic and expandable / shrinkable bag-like main body 221a, and an opening for supplying the working fluid f into the main body 221a and discharging the working fluid f in the main body 221a. It has a part 221b.

  The main body 221 a is long and is disposed along the side surface 211 a on the outer side (front side) of the “U” -shaped concave portion 211. That is, the main body 221 a is provided so as to be positioned on the front side of the lower jaw side denture 100 when the lower jaw side denture 100 is disposed in the recess 211. Such a main body 221a is fixed to the side surface 211a of the recess 211 by using, for example, an adhesive or a wire at a part of the outer periphery thereof. Thereby, the main body 221a can be expanded along the side surface 211a of the recess 211, that is, in a “U” shape.

  The mouth portion 221 b protrudes from the main body 21 through a through hole 212 formed in the main body 21. Therefore, the supply of the working fluid f to the main body 221a and the discharge of the working fluid f from the main body 221a can be easily performed through the mouth portion 221b.

  In such a first balloon 221, the main body 221a expands (swells) into the recess 211 by supplying the working fluid f from the mouth 221b into the main body 221a, and the operation in the main body 221a from the mouth 221b. By discharging the fluid f, the main body 221a contracts (shrinks).

  The second balloon 222 has elasticity, a bag-like main body 222a that can be expanded and contracted, and an opening that supplies the working fluid f into the main body 222a and discharges the working fluid f in the main body 222a. It has a portion 222b.

  The main body 222a is spherical in its expanded shape, and is disposed on the top (the portion facing the central incisor) of the side surface 211b on the inner side (back side) of the “U” -shaped recess 211. That is, the main body 222 a is provided so as to be positioned on the back side of the lower jaw side denture 100 when the lower jaw side denture 100 is disposed in the recess 211.

  The mouth portion 222 b protrudes from the main body 21 through a through hole 213 formed in the main body 21. Therefore, the supply of the working fluid f to the main body 222a and the discharge of the working fluid f from the main body 222a can be easily performed.

  In such a second balloon 222, by supplying the working fluid f from the mouth portion 222b into the main body 222a, the main body 222a expands (swells) into the recess 211, and the mouth 222b operates in the main body 222a. By discharging the fluid f, the main body 222a contracts (shrinks).

  The shape of the main body 222a is not limited to a spherical shape, and may be a long shape like the first balloon 221, for example. In the case of such a shape, it can be disposed along the inner side surface 211 b of the recess 211.

  The constituent materials of the first and second balloons 221 and 222 are not particularly limited. For example, natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber , Various rubber materials (especially those vulcanized) such as ethylene-propylene rubber, hydrin rubber, urethane rubber, silicone rubber, fluoro rubber, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide Various thermoplastic elastomers such as those based on polybutadiene, transpolyisoprene, fluororubber, and chlorinated polyethylene can be used, and one or more of these can be used in combination.

  Here, the working fluid f for inflating and deflating the first and second balloons 221 and 222 is not particularly limited, and either liquid or gas may be used. Further, the working fluid f is preferably one having biocompatibility.

  Further, the method of supplying the working fluid f into the first balloon 221 and the method of discharging the working fluid f from the first balloon 221 are not particularly limited, and examples thereof include a method using a syringe or the like. (The same applies to the second balloon 222).

  That is, when the syringe pusher is pushed in with the syringe containing the working fluid f connected to the mouth 221b, the working fluid f in the syringe is supplied into the main body 221a of the first balloon 221, and the main body 221a. Expands. On the contrary, when the pusher of the syringe is pulled back, the working fluid f in the main body 221a is discharged into the syringe, and the main body 221a contracts.

  Since the operation of such a syringe can be easily performed by an operator (such as a dentist), the use of the articulator 1 is simplified. Further, in such a method, the amount (volume) of the working fluid f supplied into the first balloon 221 can be easily adjusted, and the degree of expansion of the main body 221a can be easily controlled.

  As a method for supplying the working fluid f into the first balloon 221, and a method for discharging the working fluid f from the first balloon 221, a fluid such as a pump is used in addition to the method using the syringe described above. A method using equipment is also mentioned. In this method, the operator operates the pump to supply the working fluid f into the first balloon 221 or to discharge the working fluid f from the first balloon 221 to thereby remove the main body 221a. Can be inflated or deflated.

  The articulator 1 may be configured so that the first and second balloons 221 and 222 can be expanded and contracted independently of each other, and can be performed in conjunction with each other. It may be configured. However, from the viewpoint of operability, it is preferable that the first and second balloons 221 and 222 can be independently expanded and contracted.

  The first fixing tool 2 has been described above. The lower denture base denture 100 is attached to and detached from the first fixture 2 as described below.

  First, the first and second balloons 221 and 222 of the first fixture 2 are both contracted (the working fluid f is discharged). Next, as shown in FIG. 4, the floor 110 of the lower denture base denture 100 is placed in the recess 211. Next, as shown in FIG. 5, the first and second balloons 221 and 222 are inflated, and the first and second balloons 221 and 222 cause the floor 110 of the lower denture denture 100 to move on both sides (that is, Squeeze from the front and back side. As a result, the mandibular denture denture 100 is fixed (attached) to the first fixture 2.

  When inflating the first and second balloons 221 and 222, for example, the first balloon 221 may be inflated and then the second balloon 222 may be inflated. The first balloon 221 may be inflated after inflating 222. Further, the first and second balloons 221 and 222 may be inflated simultaneously. Further, the first and second balloons 221 and 222 may be alternately inflated little by little.

  On the other hand, when the first and second balloons 221 and 222 are deflated in a state where the mandibular denture 100 is fixed to the first fixture 2, The denture 100 can be easily removed.

  According to the first fixture 2 as described above, the mandibular prosthetic denture 100 is clamped by pressing the mandibular prosthetic denture 100 from both sides by the soft first and second balloons 221 and 222. Since it fixes, damage (damage | damage, destruction, etc.) of the lower denture base denture 100 can be prevented or suppressed effectively. Further, since the first and second balloons 221 and 222 are deformed and brought into close contact with the surface shape of the mandibular prosthetic denture 100, the mandibular prosthetic denture 100 can be fixed in a more stable state. .

Further, as described above, since the lower denture base denture 100 can be easily attached to and detached from the first fixture 2, the articulator 1 is excellent in operability. In particular, according to the first fixing tool 2, the mandibular prosthetic denture 100 can be fixed without using an adhesive such as plaster as in the prior art. Can be quickly performed by attaching the lower jaw side denture 100 removed from the first fixture 2 to the patient. Therefore, it is possible to adjust the meshing of the lower denture base denture 100 and the upper maxillary denture 200 in a shorter time and efficiently. Moreover, since it is not necessary to remove adhesives, such as gypsum, the danger that the lower jaw side denture 100 will be damaged in that case can be avoided.
The configuration of the first fixture 2 has been described in detail above.

  The articulator 1 has the connection part 4 which connects the 1st fixing tool 2 and the 2nd fixing tool 3 as mentioned above. The connecting portion 4 connects the first fixing tool 2 and the second fixing tool 3 so as to be able to move relative to each other by approximating the jaw movement, whereby the lower jaw side denture 100 and the upper jaw side Occlusion in the oral cavity with the denture 200 can be reproduced by the articulator 1.

  As shown in FIG. 1, the connecting portion 4 includes a first arm 41 to which the first fixing tool 2 is fixed, and a second arm 42 to which the second fixing tool 3 is fixed. These are rotatably connected by a shaft 43. The posture of the second arm 42 with respect to the first arm 41 can be fixed by a fixing means (not shown).

  The second arm 42 includes a distal arm 421, a proximal arm 422, and a joint 44 that connects the distal arm 421 and the proximal arm 422. The joint 44 includes two balls 441 and 442 and a ball holder 443 that holds the balls 441 and 442 therebetween. The ball 441 is connected to the distal arm 421, and the ball 442 is connected to the proximal arm 422.

  The ball holder 443 can change the pressure which clamps each ball | bowl 441 and 442 independently by operating the volt | bolt etc. which are not shown in figure. That is, the pressure of the ball holder 443 is weak and the operator can slide and rotate the ball 441 with respect to the ball holder 443, and the pressure of the operator can slide the ball 441 with respect to the ball holder 443. It can be in a state where it cannot be rotated. The same applies to the ball 442.

  According to such a joint 44, the posture of the distal end side arm 421 can be freely changed with respect to the proximal end side arm 422.

  That is, by having the joint 44, as shown in FIG. 6, the floor portion (maxillary denture base portion) 210 is compressed from both sides by the first and second balloons 321, 322, so that the second The posture of the maxillary denture denture 200 fixed to the fixture 3 can be freely changed with respect to the mandibular denture 100 fixed to the first fixture 2.

  According to the connecting part 4 as described above, the opening and closing of the upper and lower jaws can be reproduced, and the meshing of the lower denture base denture 100 and the upper jaw side denture 200 can be confirmed.

  The articulator 1 of this embodiment is a so-called “average articulator” type of articulator. However, the articulator 1 is not limited to this type. For example, a “flat wire articulator (hinge) Any type of articulator such as “articulator”, “fully adjustable articulator”, “semi-adjustable articulator” may be used.

  As mentioned above, although the fixing tool and articulator of this invention were demonstrated based on embodiment of illustration, this invention is not limited to these. For example, in the fixture and the articulator of the present invention, the configuration of each part can be replaced with any configuration that exhibits the same function, and any configuration can be added.

  In the above-described embodiment, the configuration in which the articulator has two fixing devices (the fixing device of the present invention) has been described. However, the present invention is not limited to this, and at least one fixing device (the fixing device of the present invention) is provided. If you do. That is, the fixture of this invention should just be used for any one of a 1st fixture and a 2nd fixture.

  For example, when adjusting the meshing of the mandibular denture and the maxillary natural tooth, the fixture of the present invention is used to fix the mandibular denture, and the maxillary model is a conventional model. Such a fixing tool (fixing method) may be used. Further, when adjusting the meshing of the maxillary denture and the natural tooth on the mandible, the fixture of the present invention is used to fix the maxillary denture, and the mandibular model is a conventional model. Such a fixing tool (fixing method) may be used.

  In the embodiment described above, the configuration in which each fixing tool is provided with two balloons (first and second balloons) has been described. However, the number of balloons is not limited to this, and is one. It may be three or more. Specifically, one of the first balloon and the second balloon may be omitted, or these may be integrally formed. Further, the first balloon may be divided into a plurality in the extending direction. In other words, a plurality of first balloons may be arranged along the outer side (front side) of the recess.

  Moreover, it does not specifically limit as a shape of a 1st, 2nd balloon, The surface may be smooth and the unevenness | corrugation may be formed in the surface.

DESCRIPTION OF SYMBOLS 1 Articulator 2 1st fixing tool 21 Main body 211 Recessed part 211a Side surface 211b Side surface 212 Through hole 213 Through hole 22 Balloon 221 First balloon 221a Main body 221b Mouth part 222 Second balloon 222a Main body 222b Mouth part 3 Fixing tool 321 First 1 balloon 322 second balloon 4 connecting portion 41 first arm 42 second arm 421 distal end side arm 422 proximal end side arm 43 shaft portion 44 joint 441 ball 442 ball 443 ball holder 100 lower jaw side denture 110 floor Part 200 Maxillary side denture 210 Floor part f Working fluid

Claims (3)

A fixture for fixing a denture on a bite,
A main body having a recess for arranging the floor portion of the denture;
A balloon provided in the recess, inflated by supply of the working fluid, and deflated by discharge of the working fluid;
In the state where the floor portion of the denture is placed in the recess, the working fluid is supplied into the balloon and the balloon is inflated to fix the denture. Fixture characterized by.   The balloon has a first balloon located on the front side of the plate denture and a second balloon located on the back side of the bed denture in a state where the plate denture is arranged in the recess. The fixture according to claim 1.   An articulator comprising the fixture according to claim 1 or 2.

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