JPH048357A - Dowel pin implanting kit for preparing dental technical model - Google Patents

Abstract

PURPOSE:To decrease unevenness of fixing force of a dowel pin by increasing the fixing force remarkably excellent in work efficiency by comprising an adhesively attaching tool, formed of nozzle-provided vessel for receiving a 2-cyanoacrylate system instantaneous adhesive agent composition, and a pallet. CONSTITUTION:Operation is repeated one after another in such a manner that a base end side of a dowel pin 3c is immersed in an adhesive agent composition in a recessed part of a pallet and immediately inserted into a hole 3b of a model main unit 3a by grasping the dowel pin 3c by right hand while retaining the model main unit 3a by left hand, by injecting a suitable amount of the 2-cyanoacrylate system-instantaneous adhesive agent composition from a nozzle of an adhesive attaching tool vessel into the recessed part of the pallet. This operation can be very quickly performed without failure and advanced to the next process in a short time by prompt hardening of the adhesive agent composition. After the model main unit 3a is prepared, a base 3d and a section 3e, related to the model main unit 3a, are formed in accordance with a normal method. In this way, securing force of the dowel pin 3c can be ensured by preparing an objective dental technical model 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dowel pin planting key for making a model for dental technology.

BACKGROUND OF THE INVENTION In the dental field, dental laboratory models are frequently used to perform prosthesis fabrication work or research. This model is typically produced as follows.

That is, first, an impression of the teeth is made from inside the patient's oral cavity using a suitable impression material. This impression is made by a dentist, but the subsequent steps are primarily the responsibility of the dental wave T0.

The model body (3d) is made by injecting plaster into this impression and hardening the plaster.The surface on the side where the plaster is injected should be smooth, but it should have a dent in order to interlock with the base (3d) described later. (often provided), and after curing, its smooth surface! After applying the release agent A, the required number of holes are drilled from the smooth surface side.

A dowel pin (3c) as a jig is inserted into the hole (3b) formed by drilling, but in this case, adhesive is applied to the proximal end of the dowel pin (3c) and then the hole (3b) is inserted.
(adhesive may be injected into the hole (3b) first), and the adhesive is allowed to harden naturally to secure it.

After making the model body (3a), a plaster composition for the base (3d) is poured into the mold and matched with the smooth side of the model body (3a). The dowel pin (3C) protruding from the smooth surface of the model body (3d) will pierce the base (3d) side. At this time, a convex portion is formed on the base (3d) corresponding to the concavity on the smooth surface side of the model body (3a).

After the plaster on the base (3d) side has completely hardened, a necessary number of cut surfaces (3e) are formed on the treatment target portion of the model body (3a) using a saw to reach the base (3d).

Through the above operations, the desired dental technique model [3] is produced. Since the smooth surface of the model body (3a) is coated with a release agent, the model (3) can be made removable, that is, a part of the model body (3a) can be peeled off from the base (3d),
It can be restored to its original state.

Problem to be Solved by the Invention Insert the dowel pin (3C) into the hole (3b) formed by drilling.
Conventionally, inorganic cement and gypsum have been used as adhesives for fixing the adhesive, but inorganic cement has the problem of slow curing speed, and gypsum is difficult to handle because its viscosity changes significantly after preparation.

There was a problem in that the adhesive strength after fixing varied greatly.

Therefore, recently, 2-cyanoacrylate-based instant adhesives, which have a fast curing speed, have been used. In this case, the instant adhesive contained in the container with a nozzle (lb) is discharged from the tip of the nozzle (IC) and the dowel pin (3
Attach it to the proximal end of C).

However, this operation is usually performed with a dowel pin (3
c), hold the adhesive container (1b) in your right hand and carefully press the body or bottom of the container (1b), then press the nozzle (1c)
Dispense an appropriate amount of instant adhesive from the dowel pin (3c)
The dowel pin (3c) must be attached to the proximal end of the model, then the dowel pin (3c) must be held in the right hand, and the dowel pin (3c) must be inserted while holding down the model body (3a) with the left hand, which poses a problem in that work efficiency is significantly lower. . In addition, it is difficult to apply an appropriate amount of instant adhesive to the proximal end of the dowel pin (3C), and if the amount of adhesive is too small, the dowel pin (3C) will not be properly fixed, and excessive force will be applied. If so, when the dowel pin (3C) is inserted into the hole (3b) of the model body (3a), the instant adhesive overflows from the hole (3b) due to capillary development, creating a bulge of cured adhesive, which may cause problems when washing with water or When the prosthesis was washed with hot water, the adhesion between the prosthesis and the base (3d) was impaired, and the suitability of the manufactured prosthesis to the patient was sometimes deteriorated.

SUMMARY OF THE INVENTION In view of these circumstances, it is an object of the present invention to provide a kit for planting dowel pins for producing a model for dental technology, which eliminates the above-mentioned problems.

Means for Solving the Problems The dowel pin planting kit for making a model for dental technology of the present invention is an adhesive comprising a nozzle-equipped container (1b) containing a 2-cyanoacrylate instant adhesive composition (1a). It consists of a tool (1) and a pallet (2).

In this case, the adhesive tool (1) further includes a powdered filler (
The powder filler (1e) may be mixed with the 2-cyanoacrylate instant adhesive composition (1a) at the time of use.

For convenience of explanation, powdered filler (1e) was mixed with 2-cyanoacrylate instant adhesive composition (1a) and valley 2t (2
) When the above-mentioned mixture is used, it is called a "two-dose type", and when such a method is not used, it is called a "l-dose type".

The present invention will be explained in detail below.

The dowel pin planting kit of the present invention includes an adhesive tool (1)
and a pallet (2).

As the 2-cyanoacrylate, those in which R in the formula % is an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group, an alkoxyalkyl group, a tetrahydrofurfuryl group, etc. are used. Among these, the most important is the case where R is an alkyl group, especially an ethyl group.

When used as a "one-component type", the 2-cyanoacrylate instant adhesive composition (1a) containing 2-cyanoacrylate as a main ingredient has a viscosity of 50 to 100,000 c.
ps/25°C, especially 1oo-iooo.

cps/25°C, especially those with <1000 to 5000 are preferably used. If the viscosity is extremely low, the filling properties will be impaired when applied to the holes (3b) of the model body (3a), so it is not suitable for use as a "single-dose type", and the viscosity is extremely high. The operability of objects is impaired. It is preferable to reduce the stringiness as much as possible.The viscosity and stringiness can be adjusted using thixotropy improvers (fine powder silica, etc.) and thickeners (poly-2-cyanoacrylate, etc.).
Polyacrylate, polymethacrylate, polydiallyl phthalate, nitrocellulose, etc.) or a powdered filler (1e) to be described later may be added in an appropriate amount.

When using the "two-component type", the viscosity of the 2-cyanoacrylate instant adhesive composition (1a) containing 2-cyanoacrylate as the main ingredient is preferably about 2000 cps/25°C or less, and the lower limit There is no limit to this, as it is used by mixing it with the powder filler (1e) on the pallet (2).

The above-mentioned instant adhesive composition (1a) includes "L type", "2 type", and "2 type".
Regardless of the dosage form, it is desirable to add color so that the state of injection can be seen at a glance when it is injected into the pallet (2).

The above-mentioned 2-cyanoacrylate instant adhesive composition (1
An adhesive tool (1) is constructed by housing a) in a container with a nozzle (lb).

In the case of a "two-component type", a powdered filler (1e) and a stirring rod (1f) are further added to the adhesive tool (1).

Here, the powdery filler (1e) includes inorganic or organic powders, such as silicon dioxide, titanium oxide, calcium carbonate, silicon carbide, alumina, barium acid, magnesium carbonate, calcium silicate, talc, clay, Litopone, carbon black, plastic powder, rubber powder, etc. are used.

As the stirring rod (If), a plastic rod, a glass rod, a metal rod, etc. are used.

Raw 1/-/h (As the sword pallet (2), either a reusable pallet or a disposable pallet can be used.

Particularly useful are pallets having one or more recesses (2a), and the shape of the recesses (2a) can be circular, oval, rectangular, etc. in plan view.

The depth of the recess (2a) is determined by considering the optimum immersion depth for the dowel pin (3c). Instant adhesive composition (1
In order to use the injection amount as a guideline in a), the recess (2a) may be marked with a scale or provided with a step.

The material of the pallet (2) may be any material as long as it does not have a negative effect on the 2-cyanoacrylate instant adhesive composition (1a), but if it is disposable, it may be made of polyethylene or other plastics. It is practical to do so.

Function: Preparation of a dental laboratory model using the kit of the present invention is carried out by the following procedure.

The model body (3d) is made by injecting plaster into the impression made using the impression material and letting the plaster harden.After hardening, apply a release agent to the smooth surface and remove the necessary number of pieces from the smooth surface side. The necessary number of holes (3b) are provided by drilling.

The steps up to this point are the same as before. Remove the cutting debris generated by cutting on the side of the hole from the hole (3b). When washing with water or hot water, blow air to dry it so that no water remains in the hole (3b). is desirable.

An appropriate amount of the 2-cyanoacrylate instant adhesive composition (1a) is injected into the four parts (2d) of the pallet (2) from the nozzle of the container (1b) of the adhesive tool (1). In the case of the "two-component type", the powdered filler (le) is placed in the recess (2a) of the pallet (2) before or after the 2-cyanoacrylate instant adhesive composition (1a) is injected, and a stirring rod is added. (1f)
Practice with.

Next, the proximal end of the dowel pin (3c) is immersed in the composition in the recess (2a) of the pallet (2), and then taken out.
Insert the dowel pin (3c) into the hole (3) of the model body (3a).
For example, if you are right-handed, this operation is performed by holding the model body (3a) with your left hand, grasping the dowel pin (3C) with your right hand, and repeating dipping and insertion. The workability is incomparably better than the conventional method, and there is no need to worry about depositing too much or too little, and the hole (3b) when inserting the dowel pin (3c).
This prevents mistakes such as oozing of the instant adhesive composition (1d) from the inside.

Dowel pins (3C) are sheath-shaped, elliptical in cross section, cylindrical on one side with a top surface, double bin structure, etc., and are made of metal,
There are plastics, etc.

The instant adhesive composition (1d) remaining on the pallet (2) is
In the case of “single dosage form”, it can be used for half a day to one day,
If the pallet (2) is placed in the refrigerator, it can be used for several days. In the case of "two-dose type", it can be used for about 1 to 3 hours.

Comparing the usage of the "l-dose type" and the "double-dose type", the "l-dose type" is superior in terms of operability and the pot life of the instant adhesive composition (1a).

On the other hand, the "two-dose type" is more stable in terms of dowel pin fixation strength. This is the hole (3b) in the model body (3a).
), even if cutting debris remains in the pores (3
This is because it is less susceptible to the effects of cutting debris remaining in b).

In addition, the step of fitting the base (3d) to the model body (3a),
After the plaster on the base (3d) side has completely hardened, the model body (3d)
The operation of forming a cut surface (3e) reaching the base (3d) with a saw in the treatment target area in a) is the same as the conventional method. The part of the model body (3a) to be treated can be easily attached to the base (3d).

Example Next, the present invention will be further explained with reference to Examples.

Example 1 Figure 1 shows the adhesive tool (1) constituting the kit of the present invention.
FIG. 3 is a front view showing an example, with a part cut away.

FIG. 2 is a plan view showing an example of the valley tote (2) constituting the kit of the present invention, and FIG. 3 is a sectional view taken along the line xx of the same.

Commercially available ethyl? - By blending polymethyl acrylate as a thickener, finely powdered silica as a thixotropic agent, and a fluorescent colorant to cyanoacrylate, an instantaneous material with a viscosity of 3250 cps/25°C that has virtually no stringiness An adhesive composition (1a) was prepared. This was filled into a container with a nozzle (1b) to form an adhesive tool (1) shown in FIG.

In Figure 1, (Ic) is a nozzle, (ld) is the nozzle (l
It is a lid placed over the tip of c).

As the pallet (2), a polyethylene pallet shown in FIGS. 2 and 3 was prepared.

(2a), (2b), and (2c) are the recess, top surface, and side surface of the pallet (1), respectively. In this example, the number of recesses (2a) was 5, the depth of the recesses (2a) was 10+v+, and the diameter of the upper surface of the recesses (2a) was 15.

FIG. 4 is a front view showing an example of a dental technique model (3) made using the key 7 of the present invention, and FIG. 5 is a plan view thereof. Figure 6 is the model body (3a) in Figures 4 and 5.
7 is a plan view thereof, and FIG. 8 is a bottom view thereof.

According to a conventional method, a model body (3a) was prepared, a surfactant-based release agent was applied, perforation was performed, and washing was performed. Note that after drilling, cutting waste in the hole (3b) was removed, and after washing with water, air was blown to dry the water in the hole (3b).

Inject an appropriate amount of the above-mentioned 2-cyanoacrylate instant adhesive composition (1a) into the recess (2a) of the pallet (2) from the nozzle OC of the container (1b) of the adhesive tool (1), and place the model body ( While holding down the dowel pin (3a) with your left hand, grab the dowel pin (3c) (use Towa dowel pin No. 2) with your right hand and insert the proximal end of the dowel pin (3c) into the recess (2a) of the valley (2).
) in the adhesive composition (1a) and immediately inserted into the hole (3b) of the model body (3a) was repeated one after another. This operation was carried out extremely quickly and without failure. Since the adhesive composition (1a) cures quickly,
You can move on to the next step in a short time.

After making the model body (3a), follow the usual method to make the base (3d).
was formed, and a cut surface (3e) was formed on the model body (3a). As a result, the intended dental laboratory model (3) was produced.

A part of the model body (3a) is removed from this dental technology model (3), and a torque is applied to the dowel pin (3c).
When we measured the fixing force of 5 to 8 kg-f-cm, we were able to secure a fixing force of 5 to 8 kg-f-cm. When the dowel pin (3c) is fixed, the fixing force varies widely, ranging from 1 to 8 kg-f-cm, resulting in a lack of reliability.

Example 2 As instant adhesive composition (1a), commercially available viscosity 200
A container (1b) with a nozzle was filled with an ethyl 2-cyanoacrylate instant adhesive at cps/25°C mixed with a fluorescent colorant. In addition, silicon dioxide powder (an example of a powdered filler (LE)) placed in a container and a plastic stirring rod (1f) were prepared (not shown).
.

The recess (2) of the pallet (2) shown in Figures 2 and 3
A small amount of the above powdered filler (1e) is added to a), and on top of that, the above 2 is added from the nozzle (1c) of the container (1b).
- A small amount of the cyanoacrylate instant adhesive composition (]d) was injected and kneaded with a stirring bar (1f).

The subsequent operations were performed in the same manner as in Example 1.

As a result, a more reliable and stable adhesion force than in Example 1 was obtained.

Effects of the Invention The dowel pin planting kit for making a model for dental technology of the present invention is much more efficient than the conventional dowel pin planting method, and it is possible to always apply an appropriate amount of instant adhesive composition to the dowel pin. Being able to adhere constantly;
Since the dowel pin has a large fixing force and small variations in the fixing force, it has excellent effects such as high reliability.

[Brief explanation of drawings]

Figure 1 shows the adhesive tool (1) constituting the kit of the present invention.
FIG. 3 is a front view showing an example, with a part cut away. Figure 2 shows the pallet (2) constituting the kit of the present invention.
A plan view showing an example, and FIG. 3 is a sectional view taken along the line XX. FIG. 4 is a front view showing an example of a dental technique model (3) produced using the kit of the present invention, and FIG. 5 is a plan view thereof. FIG. 6 is a front view of the model body (3a) in FIGS. 4 and 5 when the section A is removed, FIG. 7 is a plan view thereof, and FIG. 8 is a bottom view thereof. (1) Adhesive tool, (1a) Cyanoacrylate instant adhesive composition, (1b) Container, (1c) Nozzle, (ld
)...Archive, (2)...Pallet, (2d)...Recess, (2b)...Top surface, (2c)
...Side surface, (3)...Model for dental technology, (3a)...Model body, (3b)...Hole, (3c)
... Dowel pin, (3d) ... Base, (3e)
...Cut section Figure 1 Patent applicant Alpha Co., Ltd. Agent Patent attorney Seibu Oishi Figure 2 a b 3 Figure 6i 7 to 81 4 Figure 5

Claims (3)

[Claims] (1) 2-cyanoacrylate instant adhesive composition (1
A kit for planting dowel pins for making a model for dental technology, comprising an adhesive tool (1) consisting of a container with a nozzle (1b) containing a) and a pallet (2). (2) The adhesive tool (1) further includes a powdered filler (1e
) and a stirring bar (1f). (3) The kit according to claim 1, wherein the pallet (2) is a disposable pallet having a recess (2a).