JP3003705U - Spacer for removable dowel pin model - Google Patents

Abstract

(57) [Abstract] [Purpose] It is extremely easy and efficient to install and remove, enhances stability of functions, economy, resource saving and aesthetics, and prevents contamination. [Structure] An elastic material such as silicon rubber is integrally formed in a block shape, and a mounting hole 3 into which a tip portion Ps of a dowel pin P is detachably press-fitted is provided on an upper surface 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spacer for a dowel pin of a removable tooth model used in the process of manufacturing a dental prosthesis such as a denture.

[0002]

[Prior art]

 In general, in the process of manufacturing a dental prosthesis, a dentist forms a primary gypsum model of a patient, and a technician uses the primary gypsum model to manufacture a dental prosthesis. At this time, the technician implants (fixes) one end of the dowel pin on the required part of the lower surface of the primary gypsum tooth mold, projects it at a right angle from the lower surface, and inserts a molding container containing a viscous secondary gypsum material. A dowel pin of the primary gypsum tooth model is dipped in it, and the secondary gypsum material is hardened to form a dental model in which the lower surface of the primary gypsum tooth model is combined with the secondary gypsum base. Then, a part of the primary gypsum dental mold at the site where the dental prosthesis is manufactured is cut out and separated from the secondary gypsum base, and the dental prosthesis is manufactured using this.

By the way, conventionally, when dowel pins are planted in a primary gypsum dental mold, clay-like wax is put on the tip of the dowel pin and exposed on the lower surface of the secondary gypsum base after hardening of the secondary gypsum material. I was removing the wax. The reason for this is that a recess is formed on the lower surface of the secondary gypsum base from which the wax has been removed so that the tip of the dowel pin is in a protruding state, and the tip of the dowel pin is pushed to remove a part of the cut primary gypsum tooth model. This is for easy and sure separation from the secondary gypsum base.

[0004]

[Problems to be solved by the device]

 However, the conventional technique of placing wax on the tip of the dowel pin has the following problems.

First, the work of depositing wax and the work of removing wax are complicated and troublesome, and require a considerable amount of time, which makes them extremely inefficient.

Secondly, since it has an irregular shape, it lacks stability in function and aesthetics, and is prone to be soiled by attaching wax to other useless parts.

Thirdly, since wax is a consumable material, it is inferior in economic efficiency and is not preferable from the viewpoint of material saving.

The present invention solves the problems existing in the prior art as described above, and can be attached and detached extremely easily and efficiently, and has stability of function, economy, resource saving and aesthetics. It is an object of the present invention to provide a spacer for a dowel pin of a removable tooth model, which has various advantages such as excellent durability and prevention of dirt.

[0009]

[Means for Solving the Problems]

 The dowel pin spacers 1 and 1c of the removable tooth model according to the present invention are integrally formed in a block shape with an elastic material, and have a mounting hole 3 into which the tip portion P s of the dowel pin P is detachably press-fitted on the upper surface 2. It is characterized by being formed. In this case, silicone rubber can be used as the elastic material, and it is desirable that the lower surface 4 be formed as a flat surface.

[0010]

[Action]

 According to the dowel pin spacers 1 and 1c of the present invention, the dowel pin spacers 1 and 1c are integrally formed of an elastic material and have the mounting hole 3 on the upper surface 2. Therefore, when mounting the dowel pin P on the dowel pin P, the tip portion Ps of the dowel pin P is mounted. It can be easily attached by simply press-fitting it in 3, and it can be easily removed by only pulling. Furthermore, since it is integrally formed in a block shape, it has a fixed shape and can be used repeatedly.

[0011]

【Example】

 Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, the structure of the dowel pin spacer 1 according to the present invention will be described with reference to FIGS.

As shown in FIGS. 4 and 5, the dowel pin spacer 1 is integrally molded in a block shape from silicon rubber (elastic material) having a predetermined elasticity. As the elastic material to be used, in addition to silicone rubber, any elastic material such as other synthetic rubber and natural rubber can be used.

The spacer 1 has an overall shape of a rectangular parallelepiped, and the corners of the side surface 5 are rounded as shown in FIG. 5, and the side surface 5 and the upper surface 2 are also rounded as shown in FIG. With such a shape, the spacer 1 can be easily removed from the secondary gypsum base described later.

In the center of the upper surface 2 of the spacer 1, a mounting hole 3 having a circular cross section into which the tip portion Ps of the dowel pin P can be press-fitted is formed. The mounting hole 3 is selected to be perpendicular to the upper surface 2 and the inner diameter thereof is slightly smaller than the diameter of the tip portion Ps of the dowel pin P. Furthermore, the lower surface 4 of the spacer 1 is formed into a flat surface.

Next, a method of forming the removable dental mold model M including the method of using the spacer 1 will be described with reference to FIGS. 1 to 3.

First, in the dentist, the patient's primary plaster tooth mold Mu is molded (see FIG. 2). On the other hand, the technician, as shown in FIG. 2, provides the required number of holes Ha, Hb, Hc at the required portions of the lower surface of the primary plaster tooth mold Mu, and places the upper end portions of the dowel pins P ... in these holes Ha. Each is inserted and fixed by an adhesive to establish a plant. As a result, the dowel pins P ... Protrude at a right angle from the lower surface of the primary plaster tooth model Mu. The dowel pin P is formed of a metal material so that the diameter becomes gradually smaller toward the lower end (tip).

The spacer 1 according to the present invention is attached to the tip portion Ps of the dowel pin P. In this case, the tip portion Ps of the dowel pin P can be easily attached with one touch by simply press-fitting it into the mounting hole 3 of the spacer 1 (see FIG. 2).

Then, as shown in FIG. 2, the dowel pins P ... Which protrude from the primary gypsum tooth mold Mu are dipped in a modeling container 21 containing a viscous secondary gypsum material. At this time, since the vibration is applied to the modeling container 11 by the vibrator, the dowel pins P ... Can be immersed easily and surely. Therefore, when the secondary gypsum material is cured in this state, the tooth model M shown in FIG. 1 in which the secondary gypsum base Mb is combined with the lower surface of the primary gypsum tooth model Mu is formed.

On the other hand, as shown in FIG. 3, with respect to the modeled tooth model M, a part Mp of the primary plaster tooth model Mu is cut off at the site where the dental prosthesis is manufactured, and the spacer 1 is Next, it is removed from the plaster base Mb. In this case, the spacer 1 can be easily removed only by pulling it against the secondary gypsum base Mb. As a result, the recess 11 appears on the lower surface of the secondary gypsum base Mb, and the tip Ps of the dowel pin P projects into the recess 11 (see FIG. 3). Therefore, if the tip portion Ps of the dowel pin P is pushed, a part Mp of the primary plaster tooth model Mu can be easily separated from the secondary plaster base portion Mb. Hereinafter, a dental prosthesis is manufactured by a predetermined technique.

As described above, since the spacer 1 is used, attachment and detachment to and from the dowel pin P can be performed very easily and efficiently, and since it has a fixed form and can be repeatedly used, It is excellent in functional stability, economy, resource saving and aesthetics, and it prevents unnecessary stains during work.

Note that FIG. 6 shows a modified embodiment. The spacer 1c according to the modified embodiment is configured in the same manner as the spacer 1 except that the height dimension is larger than that of the spacer 1. Normally, in the process of manufacturing a dental prosthesis, the tooth model M is attached to the articulator in order to reproduce the occlusal movement. At this time, the spacer 1c is attached to the tip portion Ps of the dowel pin P. As a result, the space between the tooth model M and the articulator can be secured reliably and uniformly, and the same advantages as the spacer 1 can be enjoyed.

Although the embodiments have been described in detail above, the present invention is not limited to such embodiments, and the details of the configuration, shape, materials, etc. are within the scope of the present invention. It can be changed arbitrarily.

[0024]

[Effect of device]

 As described above, the spacer for dowel pins according to the present invention is integrally formed in a block shape with an elastic material, and the mounting hole into which the tip of the dowel pin is detachably press-fitted is formed on the upper surface. Has a remarkable effect.

Since the attachment and detachment to and from the dowel pin can be performed with one touch and easily, it can be performed extremely efficiently and in a short time.

Since it has a fixed shape, it is excellent in stability of function and aesthetics, and there is no fear of contaminating other unnecessary parts.

Since it can be repeatedly used, it is preferable from the viewpoint of economical efficiency and material saving.

[Submission date] June 13, 1994

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

[0009]

The dowel pin spacers 1 and 1c of the removable tooth model according to the present invention are integrally formed in a block shape from an elastic material, and have an upper surface 2.
Is characterized in that a mounting hole 3 into which the tip portion Ps of the dowel pin P is detachably press-fitted is formed. In this case, silicone rubber can be used as the elastic material, and the height can be increased so that the space between the dental model and articulator can be kept constant. Further, the end portion of the upper surface 2 is formed to have a roundness.

[Brief description of drawings]

FIG. 1 is a partial sectional front view of a removable dental mold model using a spacer according to the present invention,

FIG. 2 is a front view showing a process of forming the removable dental mold model;

FIG. 3 is a front view showing a process of forming the removable dental model.

FIG. 4 is a partially sectional front view of the spacer,

FIG. 5 is a plan view of the spacer,

FIG. 6 is a front view of a spacer according to a modified embodiment,

[Explanation of symbols]

 1 Spacer for dowel pin 1c Spacer for dowel pin 2 Upper surface of spacer 3 Mounting hole 4 Lower surface of spacer P Dowel pin Ps Dowel pin tip

[Procedure amendment]

[Submission date] June 13, 1994

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (3)

[Scope of utility model registration request] 1. A spacer for a dowel pin of a removable tooth model, characterized by being integrally formed in a block shape with an elastic material, and having a mounting hole into which a tip of a dowel pin is detachably press-fitted is formed on an upper surface. . 2. The spacer for a dowel pin of a removable tooth model according to claim 1, wherein the elastic material is silicon rubber. 3. The spacer for a dowel pin of a removable tooth model according to claim 1, wherein the lower surface is formed as a flat surface.