JP2517186B2 - Denture compatibility testing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a denture conformity testing device for testing the conformity of the inner crown and the outer crown of a Cornus Krone denture.

[0002]

2. Description of the Related Art Cornus Krone dentures have hitherto been proposed as so-called telescopic crown dentures. As shown in FIG. 1, this Cornus Krone denture is configured to have an inner crown 102 attached to the root of the tooth and an outer crown 103 fitted onto the inner crown 102. Inner crown 102
Is made of a metallic material and has an outer side surface formed in a cylindrical shape. The outer crown 103 is made of a metal material and has a fitting hole 105 into which the inner crown 102 is fitted, and is formed into an arc shape substantially following the shape of the gingiva 101. A plurality of the fitting holes 105 are formed in the outer crown 103 according to the number of the inner crowns 102.

The outer crown 103 is attached to the gingiva 101 as shown in FIG. 2 by fitting the fitting holes 105 and the inner crowns 102 in correspondence with each other.
The outer crown 103 has a resin front portion 10 on the outer surface which is the outer side of the oral cavity when attached to the gingiva 101.
4 is adhered and formed. This resin front part 104 is
It is made of a material such as synthetic resin and has a color and shape similar to those of natural teeth.

The outer crown 103 has a holding rod 107.
The denture base 106 is attached via the. A plurality of dentures 108 are attached to the denture base 106.
The dentures 108 are attached so as to be arranged on an arc-shaped extension line formed by the outer crown 103. When the outer crown 103 is fitted to the inner crown 102, the outer crown 103 and the dentures 108 are arranged in an arc shape on the gingiva 101.

In such a Cornus Krone denture, a so-called maintenance force is caused by a slight change in the relative size between the outer diameter of each inner crown 102 and the inner diameter of each fitting hole 105 of the outer crown 103. It fluctuates greatly. The maintenance force is a force required to disengage the outer crown 103 having the inner crowns 102 fitted in the fitting holes 105 from the inner crowns 102.

The inner diameter of the fitting hole 105 is the inner crown 102.
When it is relatively small with respect to the outer diameter of the inner crown 102,
It will be difficult to attach and detach. Further, when the inner diameter of the fitting hole 105 is relatively large with respect to the outer diameter of the inner crown 102, the maintenance force becomes small and the outer crown 10
3 may be inadvertently dropped from the inner crowns 102.

The relative dimensions of the inner crown 102 and the fitting hole 105 are adjusted by a dental technique, and the maintenance force is also set to a predetermined value. Also, the inner crown 102
In the state after the attachment to the tooth root, the maintenance force may not be maintained at a predetermined value depending on the temperature rise of the inner crown 102 and the attachment state of the inner crown 102 to the tooth root. It may also be adjusted by the dentist after the crown 102 is attached to the root.

To adjust the maintenance force, the outer crown 1 is used.
It is necessary to perform a denture compatibility test between the fitting holes 105 of No. 03 and the inner crown 102. This denture conformance test is an excessive force between the outer surface portion of the inner crown 102 and the inner surface portion of the fitting hole 105 when the inner crown 102 and the fitting hole 105 are fitted together. This is a test for finding a contacting portion. And
The maintenance force is adjusted by polishing a portion of the inner surface of the fitting hole 105 that comes into contact with the outer surface of the inner crown 102 with an excessive force.

In the denture compatibility test, first, the inner crown 10 is used.
The conformity test material is applied to the outer surface portion of 2 and the inner surface portion of the fitting hole 105, and then the inner crown 102 and the fitting hole 105 are fitted to each other, and after hardening of the fitting test material, the inner crown 102
And the fitting hole 105 are separated from each other. The compatibility test material is obtained by kneading a silicon paste and a curing agent, and is cured in about 1 to 5 minutes after kneading.

Then, the determination of the conformity test is made by the thickness of the layer of the conformity test material remaining on the inner surface of the fitting hole 105. That is, if the layer of the conforming test material is uniform and is appropriately thin, the inner crown 102 and the fitting hole 105 are formed.
The conformity with is good. On the other hand, when the thickness of the layer of the conforming test material is not uniform and locally extremely thin or thick, the inner crown 102 and the fitting hole 105 are formed.
The conformity condition with is not good. In this case, the maintenance force is adjusted by polishing a portion of the inner surface of the fitting hole 105 where the layer of the compatible test material is extremely thin.

[0011]

By the way, in the denture conformance test using the conformity test material as described above, the silicone paste and the curing agent, which form the conformity test material, are separated for each degree of the denture conformance test. It is necessary to carry out kneading, which is complicated. In addition, in this denture compatibility test, the inner crown 1
After fitting 02 with the fitting hole 105, it is necessary to leave it until the compatible test material is cured, and a quick test cannot be performed. On the other hand, if the curing time of the compatibility test material is shortened, the time for applying the compatibility test material and fitting the inner crown 102 and the fitting hole 105 is shortened.
It is difficult to perform these tasks.

Further, in this denture conformance test, when the inner crown 102 and the fitting hole 105 are fitted, the fitting test material is squeezed out from between the inner crown 102 and the fitting hole 105, There is a risk of leakage into the oral cavity. This is because the conformity test material is in a paste form, so that the conformity test material is the outer surface portion of the inner crown 102 and the fitting hole 1.
This is because there is no choice but to apply as a thick layer to the inner surface portion of 05.

The conformity test material may act as an adhesive to adhere to a specific material, and may adhere or may be cured in an unused state. There is an inconvenience that it costs.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and provides a denture compatibility test apparatus capable of easily and quickly testing the conformity state of the outer crown and the inner crown of the Cornus Krone denture. The purpose is to provide.

[0015]

In order to solve the above-mentioned problems and achieve the above-mentioned object, a denture compatibility testing apparatus according to the present invention is provided with a fitting hole inner surface portion of an outer crown fitted to an inner crown attached to a tooth root. Has a compatibility test material applying means for applying a one-part compatibility test material consisting of a solvent such as water or alcohol and a pigment, and the fitting hole after applying the compatibility test material to the inner surface of the fitting hole. The inner crown and the fitting hole depending on the presence or absence of a peeling portion of the conforming test material on the inner surface of the fitting hole when the inner crown is fitted to the This makes it possible to determine the conformance state.

According to the present invention, in the above-mentioned denture compatibility test apparatus, the compatibility test material applying means comprises a cartridge containing the compatibility test material and a brush member supplied with the compatibility test material from the cartridge. It is assumed that it is configured to have.

[0017]

When the denture compatibility test apparatus according to the present invention is used, the solvent and the pigment, which are water or alcohol, are applied to the inner surface of the fitting hole of the outer crown fitted to the inner crown attached to the tooth root. When the fitting hole and the inner crown of the one-component compatible test material are separated from each other after the fitting hole and the inner crown are separated from each other, the fitting of the inner crown and the fitting is performed depending on the presence or absence of a peeling portion. Since it is possible to determine the compatibility with the hole, the test work can be done quickly, and
There is no risk that the compatible test material will flow out into the oral cavity or the like.

Further, a conforming test material applying means for applying the conforming test material to the inner surface of the fitting hole of the outer crown, a cartridge containing the conforming test material, and the conforming test material supplied from the cartridge. If it is configured to have a brush member, the application work can be performed more easily, and the compatible test material can be stored well.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. The denture compatibility test apparatus according to the present invention,
When adjusting the maintenance force of a so-called Cornus Krone denture, which is a so-called telescopic crown denture, this is a device for testing the fitting state of the fitting between the inner crown and the outer crown that form this Cornus Krone denture.

As shown in FIG. 1, the above-mentioned Cornus Krone denture has a plurality of inner crowns 102 attached to the roots of the gingiva 101 and an outer crown 103 externally fitted to these inner crowns 102.
And is configured. Each of the inner crowns 102 is made of a metal material and has an outer surface portion formed in a cylindrical shape. The outer crown 103 is made of a metal material, and each inner crown 1 is made of metal.
02 has a plurality of fitting holes 105 to be fitted correspondingly, and is formed in an arc shape substantially following the shape of the gingiva 101. The fitting holes 105 are provided in the outer crown 103 as many as the number of the inner crowns 102.

The outer crown 103 is fitted with the fitting holes 105 and the inner crowns 102 attached to the tooth roots so as to correspond to each other, and as shown in FIGS. Mounted on. On the outer crown 103, a resin front part 104 is formed by being adhered to an outer surface part which is an outer side of the oral cavity when it is attached on the gingiva 101. The resin front part 104 is made of a material such as synthetic resin and has a color and shape similar to those of natural teeth.

A holding rod 107 is attached to the outer crown 103.
The denture base 106 is attached via the. The denture base 106 is made of a material such as synthetic resin.
A plurality of dentures 108 are attached to the denture base 106. The dentures 108 are attached so as to be arranged on an arc-shaped extension line formed by the outer crown 103. The outer crown 103 and the dentures 108 are arranged in an arc shape on the gingiva 101 when the outer crown 103 is fitted to the inner crowns 102.

Then, the denture compatibility test to which the present invention is applied is performed prior to adjusting the maintenance force of the Cornus Krone denture. This denture conformance test is based on the above-mentioned outer crown 10
3 is fitted to each of the inner crowns 102, and the force required for this fitting and the force required to disengage the outer crown 103 fitted to each of the inner crowns 102 from each of the inner crowns 102 are checked. The inner crown 102 of the inner surface portion of the fitting hole 105
This is to find a site that comes into contact with the outer surface of the body with an excessive force.

For the denture compatibility test, as shown in FIG. 4, a compatibility test material applicator 3 which serves as a compatibility test material application means in which a liquid compatibility test material 9 is housed and held in a cartridge 4 is used. The compatibility test material 9 is a one-liquid type in which a pigment is dissolved in a solvent such as water or alcohol, and is accommodated in a cylindrical cartridge 4 whose rear end side is closed. The front end side of the cartridge 4 is open, and the cartridge 4 has a first screw portion 4b on the peripheral portion on the front end side. On the front end side of the cartridge 4, a compatible test material supply cylinder 5 formed in a substantially cylindrical shape is attached by the first screw portion 4b. That is, the first screw portion 4 is provided on the inner peripheral surface portion on the rear end side of the compatible test material supply cylinder 5.
The 2nd screw part 5a screwed on b is formed. The conforming test material supply cylinder 5 is formed in a cylindrical shape with its front end side and rear end side open.

A supply amount adjusting member 6 is provided in the compatible test material supply cylinder 5. This supply amount adjusting member 6 is
It is composed of a plurality of partition walls for closing a part of the inside of the compatible test material supply cylinder 5. The supply amount adjusting member 6 appropriately limits the flow rate of the compatible test material 9 in the compatible test material supply cylinder 5 and adjusts the flow rate.

A brush member 8 is attached to the front end side of the compatible test material supply cylinder 5 via a brush holding member 7. The brush holding member 7 is formed in an annular shape and holds the brush 8 on the inner side. The brush member 8 is
It is configured by combining a plurality of thin hair-like fibrous materials or synthetic resin materials.

In the conformity test material applicator 3, the conformity test material 9 contained in the cartridge 4 flows out from the front end side of the cartridge 4, passes through the conformity test material supply cylinder 5, and then the brush. It reaches the member 8. This conformance test material 9
Penetrates between the materials forming the brush member 8 and reaches the tip side of the brush member 8.

The conformity test material applicator 3 has a cap member 10 detachably attached to the tip side of the conformity test material supply cylinder 5 so as to cover the brush member 8. The cap member 10 is the conformity test material supply cylinder 5 described above.
When it is attached to the tip side of the above, the brush member 8 is closed in cooperation with the compatible test material supply cylinder 5 to prevent the compatible test material 9 from volatilizing or drying.

In the denture compatibility test, first, as shown in FIG. 5, the brush member 8 of the compatibility test material applicator 3 is used to cover the entire inner surface of each fitting hole 105. Apply the conformity test material 9. The conformity test material 9 applied to the inner surface portion is dried in order to fix the pigment in the conformity test material 9 on the inner surface portion. This drying is
It will be completed in a short time.

Then, the fitting holes 105 each having the inner surface portion coated with the compatibility test material 9 are fitted to the inner crowns 102. At this time, a finger pressure or an occlusal pressure is applied to the outer crowns 103 to surely fit the inner crowns 102. The conformity test material 9 has the fitting hole 105.
Since it is applied as a thin film to the inner surface portion of and is dried, there is no possibility of flowing out from the fitting hole 105 and reaching the inside of the oral cavity or the like.

Next, the outer crown 103 is replaced with the inner crowns 102.
Make more detached. At this time, the inner surface of the fitting hole 105 may have a peeling portion 9a where the compatibility test material 9 is peeled off, as shown in FIG. This peeling portion 9a
Occurs because the inner surface of the fitting hole 105 and the outer surface of the inner crown 102 are in contact with each other with an excessive force. When such a peeling portion 9a occurs, the fitting condition between the outer crown 103 and the inner crown 102 is not good, and the maintenance force of each inner crown 102 with respect to the outer crown 103 becomes excessive. ing.

When the peeling portion 9a is formed, the maintenance force is adjusted by polishing the portion of the peeling portion 9a on the inner surface of the fitting hole 105. This polishing is performed using a denture maintenance power adjusting device. As shown in FIGS. 7 and 8, the supporting force adjusting device for a denture has a support shaft 1
And a polishing material 2 adhered to and formed on the tip side of the support shaft 1.

The support shaft 1 is formed of a material such as metal into a cylindrical shape. This support shaft 1
The length indicated by arrow A in FIG. 7 is about 40 mm to 45 mm,
The diameter shown by arrow D in FIG. 7 is formed to be about 2 mm.

The abrasive material 2 is made of a rubber-based abrasive material and is formed on the tip side of the support shaft 1 by means such as molding with a die. The polishing material 2 can be attached to the support shaft 1 by so-called insert molding, for example. That is, by mounting the support shaft 1 in the mold in advance and injecting the melted rubber-like abrasive into the mold, the rubber-like abrasive is kept in the peripheral portion of the support shaft 1. The support shaft 1 is attached and molded.

Some of the rubber-based abrasives are composed of a binder such as silicon rubber and fine particles such as alundum abrasive grains mixed in the binder. The rubber-based abrasive using silicon rubber as the binder is called a silicon abrasive. As the silicon abrasive material, due to the difference in size of the fine particles, coarse particles, medium particles,
There are types such as fine particles. The type depending on the difference in the size of these fine particles is selected according to the finish state required after polishing, that is, the surface roughness.

The outer surface of the abrasive 2 is formed in a cylindrical shape coaxial with the support shaft 1. The cylinder formed by the abrasive 2 has a length of about 7 mm to 10 mm shown by an arrow B in FIG. 7, and a diameter of about 2.5 mm to 4.5 mm shown by an arrow E in FIG.

Further, as shown by an arrow F in FIG. 8, the tip surface portion and the peripheral surface portion of the abrasive material 2 form an angle of approximately 90 ° with each other, and a circular ridge line is formed in the peripheral portion of the tip surface portion. Forming a part.

Further, the thickness of the abrasive 2 deposited on the tip of the support shaft 1 shown by the arrow C in FIG.
It is set to 1 mm or less.

To adjust the maintenance force using such a denture maintenance force adjusting device, the abrasive 2 is rotated around the axis at a high speed of, for example, 20,000 to 30,000 revolutions per minute. As shown in FIG.
It is performed by making sliding contact with the inner surface portion of No. 5. Abrasive material 2
Has a diameter of about 2.5 mm to 4.5 mm, it can be easily inserted into the fitting hole 105.

To rotate the abrasive material 2, as shown in FIG. 10, the handpiece 11, which is a rotary operation device, is caused to hold the base end side of the support shaft 1, and the handpiece 11 is rotated.
Drive it. The handpiece 11 is configured to include a shaft holding portion 12, an electric motor for rotating the shaft holding portion 12, and the like. The handpiece 11 holds the base end side of the support shaft 1 by the shaft holding portion 12, and rotates the support shaft 1 together with the shaft holding portion 12 about the axis by the driving force of the electric motor. It is configured.

In the polishing of the inner surface of the fitting hole 105, the side surface of the inner surface of the fitting hole 105 is polished by the outer peripheral surface of the polishing material 2 having a cylindrical shape. Since the side surface of the inner surface of the fitting hole 105 has a cylindrical surface shape, the peripheral surface of the abrasive 2 can uniformly polish the surface to a good smooth surface. The abrasive 2 has a length of 7
Since the thickness is about 10 mm to 10 mm, the side surface portion of the inner surface portion of the fitting hole 105 can be simultaneously polished from the opening end side to the bottom surface side.

Then, the bottom surface portion of the inner surface portion of the fitting hole 105 can be polished by the tip end surface portion of the polishing material 2 having a flat surface shape.

Furthermore, since the tip surface portion and the peripheral surface portion of the abrasive 2 form an angle of approximately 90 ° with each other to form a ridge line portion around the tip surface portion, the fitting hole 105 of the fitting hole 105 is formed. The vicinity of the corner formed by the side surface portion and the bottom surface portion of the inner surface portion can be satisfactorily polished. The angle formed by the side surface portion and the bottom surface portion of the inner surface portion of the fitting hole 105 indicated by arrow G in FIG.
It is about 96 °.

In this artificial tooth maintenance force adjusting device, since the thickness of the abrasive 2 adhered on the tip of the support shaft 1 is 1 mm or less, the support shaft 1 The eccentricity due to the flexible deformation of the abrasive 2 due to the centrifugal force caused by the rotation is prevented, and the inner surface of the fitting hole 105 can be polished with high accuracy.

After performing such polishing, the denture compatibility test is conducted again, and if it is confirmed that the peeling portion 9a does not occur, it is determined that the outer crown 103 and the inner crown 102 are in a suitable condition. That is, the maintenance force is in a suitable state.

[0046]

As described above, the denture compatibility testing apparatus according to the present invention comprises a solvent, which is water or alcohol, and a pigment on the inner surface portion of the fitting hole of the outer crown fitted to the inner crown attached to the tooth root. A fitting test material applying means for applying a one-part fitting test material is provided, and after applying the fitting test material to the inner surface of the fitting hole, the inner crown is fitted into the fitting hole, and then these fittings are fitted. It is possible to determine the conforming state of the inner crown and the fitting hole based on the presence or absence of the peeling portion of the fitting test material on the inner surface of the fitting hole when the hole and the inner crown are separated.

Therefore, if the denture compatibility test apparatus according to the present invention is used, the denture compatibility test work can be performed quickly, and there is no risk that the compatibility test material will flow out into the oral cavity or the like.

Further, the conforming test material applying means for applying the conforming test material to the inner surface of the fitting hole of the outer crown is supplied with the conforming test material from the cartridge containing the conforming test material. If it is configured to have a brush member, the application work can be performed more easily, and the compatible test material can be stored well.

That is, the present invention can provide a denture conformity testing device that can easily and quickly test the conformity of the outer crown and inner crown of a Cornus Krone denture.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a Cornus Krone denture to which a denture compatibility test apparatus according to the present invention is applied.

FIG. 2 is a perspective view showing a state where the Cornus Krone denture is mounted.

FIG. 3 is an enlarged sectional view of an essential part showing a state where the above-mentioned Cornus Krone denture is mounted.

FIG. 4 is a vertical cross-sectional view showing a configuration of a compatibility test material applicator that constitutes the above-described denture compatibility test apparatus.

FIG. 5 is an enlarged cross-sectional view showing a state in which the conformity test material is applied to the fitting hole of the outer crown by the conformity test material applicator.

FIG. 6 is an enlarged perspective view showing a state in the fitting hole after a denture compatibility test using the denture compatibility test apparatus is performed.

FIG. 7 is a side view showing a partially cutaway view of the configuration of a denture maintenance power adjusting device.

FIG. 8 is a perspective view showing a configuration of the artificial tooth maintaining force adjusting device.

FIG. 9 is a vertical cross-sectional view showing a state in which the inside of the fitting hole is polished by using the artificial tooth maintaining force adjusting device.

FIG. 10 is a side view showing a configuration of a rotation operating device for rotating the artificial tooth maintaining force adjusting device.

[Explanation of symbols]

 3 Applicable test material applicator 4 Cartridge 8 Brush member 9 Applicable test material 9a Peeling portion 102 Inner crown 103 Outer crown 105 Fitting hole

Claims (2)

(57) [Claims] 1. A conformity test material application for applying a one-component conformity test material composed of a solvent, which is water or alcohol, and a pigment to the inner surface of the fitting hole of the outer crown fitted to the inner crown attached to the tooth root. A means for fitting the inner crown to the fitting hole after applying the compatibility test material to the inner surface of the fitting hole, and then when the fitting hole and the inner crown are disengaged from each other. A denture conformity testing device capable of judging a conforming state between the inner crown and the fitting hole based on the presence or absence of a peeling portion of the conforming test material on the inner surface of the fitting hole. 2. The denture conforming apparatus according to claim 1, wherein the conforming test material applying means comprises a cartridge containing the conforming test material and a brush member to which the conforming test material is supplied. Test equipment.