JP4222657B2 - Dental blending device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus that has a main body for holding with one hand and a vibration generating portion provided on the main body, and that can promote the pouring of a dental mixture by the vibration.
[0002]
[Prior art]
In dental technicians, it is important to pour a fluid (kneaded material) such as gypsum and investment material into the restoration parts such as crowns and inlays in the impression or the occlusal surface and the inner surface of the wax pattern. Greatly affects the quality of the product. For example, in the work of pouring the fluid as described above into the inner surface of the wax pattern, conventionally, a tapered brush, a metal instrument, or a thin wax rod is used, and a small amount of the investment material is scooped and poured at the tip. The operation will be repeated many times. This is because the amount that can be scooped at a time is small. However, even if it happens to scoop up a lot, it will drop before it is poured into the target location, or a large amount will flow at once, and there will be problems that large bubbles will be involved.
[0003]
As an instrument used for the above-mentioned work, Japanese Utility Model Laid-Open No. 2-131417, a device for a dental vibrator has been proposed. In the device of the same invention, the tip of the vibrating body supported by the base portion is projected forward from the tip of the casing, and the middle portion of the vibrating body is engaged with the rotating pinion by a switching operation. In this configuration, vibration is generated. With this configuration, it is described that when the vibrating portion at the tip of the vibrating body comes into contact with the fluidized gypsum, the gypsum is vibrated, and the tooth mold is filled without any wrinkles.
[0004]
However, the vibrating body in the above device needs to be a conductive material in order to serve as part of the switch mechanism. In the specification, the vibrating body is described as a round bar-shaped stainless material having a diameter of about 1 mm, and no other examples are described.
[0005]
On the other hand, for example, there is a situation that very precise surface reproducibility is required in impression taking. As the impression material, agar, alginate, and rubber materials are generally used. However, these materials are easily deformed or damaged even by a slight external force. When the vibrator of the above-described device is used, scratching or rubbing the impression surface with the tip of the vibrating body made of a vibrating rod-shaped stainless steel material may cause deformation or damage even with a rubber-based impression material with high resilience. Deafness is easily guessed.
[0006]
In the above device, the method of using the vibrating body in contact with the impression surface or the like is not described, but it is positioned as deep as possible without touching the impression surface with the tip of the vibrating body buried in the gypsum. The thinner the tooth mold, the more difficult it is, and it is considered that the vibrating body actually contacts the impression surface. This is especially true for impression surfaces where there are many irregularities in the tooth mold, such as inlay formation. For this reason, even if the round rod-shaped stainless steel vibrating body described in the above device is used, it is likely to cause deformation and damage of the impression material, and a good result cannot be expected.
[0007]
In the wax pattern, since deformation and damage due to external force are more likely to occur than in the impression material, a more delicate operation is required for the burying operation. When this is performed by the vibrator according to the above-described device, excessively strong vibration of the stainless steel vibrating body becomes a problem. It is self-evident that when the vibrating body comes into contact with the wax pattern surface due to this vibration, the portion is deformed or damaged. Therefore, it is considered that the use of the vibrator according to the above-mentioned device for the burying operation of the wax pattern is at a high risk, so that it cannot be practically used.
[0008]
Further, the amount of gypsum that can be skimmed by the stainless steel vibrating body in the above device is largely the same as that of the conventional method as long as there is no difference in form. Therefore, it is not possible to satisfy even a small tooth mold at a time, and it is necessary to use a method of scooping gypsum from a kneader several times and pouring it into the tooth mold to fill one tooth.
[0009]
In addition, there is a problem in the removal of bubbles in the case of the above-described vibrator. In the device of this vibrator, it is supposed that vibration is directly applied to the object to be vibrated (that is, gypsum, etc.) to eliminate bubbles by eliminating vibration, but apart from the bubbles contained in gypsum, the inner surface of the tooth mold, This is because it is particularly difficult to lift the bubbles adhering to the corners away from the tooth mold.
[0010]
According to the experience of the present inventor, it is not possible to expect a great effect because bubbles are lifted up simply by vigorously vibrating the plaster, and the tip of something must be touched to separate the bubbles. It goes without saying that the vibrator is not suitable for touching bubbles.
[0011]
In clinical practice, the inner surface of the impression tooth mold has a complicated shape with many irregularities, and there are also portions where the impression material is thin. In particular, when a rubber-based impression material that does not wet well is used as the impression material, the operation of pouring gypsum without generating bubbles is very difficult. For this reason, conventionally, it has been necessary to insert a thin object into the gypsum and gently trace or lightly poke a portion where air bubbles are easily generated to lift the air bubbles away from the inner surface of the tooth mold.
[0012]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and the problem is that it is possible to pour a flowable dental kneaded material such as gypsum and investment material into a target portion little by little until it is sufficiently filled. And to allow the kneaded material to flow into the target place without entraining bubbles as much as possible.
[0013]
Another object of the present invention is to remove bubbles remaining when the kneaded product is poured into the tooth mold and remains attached to the tooth mold surface without causing deformation or damage to the tooth mold surface. It is to be.
[0014]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention relates to a dental kneading apparatus, in which a vibration generating mechanism is arranged in the vicinity of the front end of the main body, and the kneaded material is one of vibration transmitting means for transmitting the generated vibration. In addition to the storage part, a kneaded product that has flowed out of the part can be supplied to the target location, and a flexible tip that can contact the target location can be attached to the other vibration transmission means as a single unit or separately. Is taken.
[0015]
The amount of kneaded material necessary to fill the tooth mold is stored in the filling container and poured into the tooth mold in a single operation, and it is also spread to the details of the tooth mold by vibration and is taken in and remains. The air bubbles that have been removed can be effectively removed by the tip without causing deformation or damage to the tooth mold.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
A dental blending apparatus 10 according to the present invention generates a necessary vibration using a drive source 12 such as a motor provided in a main body 11 and fills a tooth mold or the like by the vibration. This is an instrument that can promote the flow of the Japanese product 13. In the present invention, the dental kneaded product is a general term for dental plaster, investment material, and refractory model material.
[0017]
The main body 11 has a size and a shape that can be operated by holding a pencil in one hand, for example. A mechanism for generating vibration is incorporated in the main body 11. Several types of vibration generating mechanisms are known, but the illustrated method using rotation of an eccentric weight, the method using vibration using an electromagnet, and the like (not shown) are applied to the apparatus 10 of the present invention. be able to.
[0018]
The drive source 12 of the vibration generating mechanism is disposed in the vicinity of the distal end portion of the hollow main body 11, and an eccentric weight 14 is provided on the rotating shaft thereof. In the illustrated first embodiment, the driving source 12 uses a micro motor particularly suitable for the present invention, and the power from the power source 17 is turned on and off by the operation of the operator 16 of the switch 15. In the case of the embodiment, all the mechanisms are incorporated in the main body. However, the power source 17 does not have to be a battery, and may be pulled from an external power source with a cord.
[0019]
The illustrated example has a configuration in which the vibration of the eccentric weight 14 using a micro motor as the drive source 12 is transmitted to the vibration transmission means 19 without being absorbed by the main body 11 as much as possible. In this configuration, the holding portion 18 made of a resin material having appropriate flexibility is fixed to the tip of the main body, and the motor is housed and fixed inside the holding portion 18. The main body 11 is hard, and the tube-shaped holding portion 18 that is more flexible than that receives the vibration generated by the vibration generating mechanism and causes a larger shake than the main body 11 (amplifies the vibration). Is transmitted to the vibration transmitting means 19 positioned at the tip of the holding portion 18.
[0020]
The amplification degree of vibration by the holding unit 18 can be adjusted by moving the position of the motor. That is, the closer the motor is to the main body 11, the smaller the amplitude of the holding portion 18, and the farther the motor is arranged away from the main body 11, the larger the amplitude of the holding portion 18. Therefore, by appropriately selecting the motor position, the vibration generated on the motor side can be adjusted and transmitted to the vibration transmitting means 19 without the main body 11 absorbing the vibration.
[0021]
The holding part 18 may be integrated with the main body 11 and the vibration transmitting means 19. In the illustrated example, since the main body 11, the holding portion 18, and the vibration transmitting means 19 have different functions, the respective portions are configured to be fitted at their respective ends, but different functional parts are integrally formed. It's easy to do.
[0022]
Such a main body 11, the holding part 18, and the vibration transmission means 19 can be manufactured with the synthetic resin which has the property suitable for each part. Of these, the vibration transmitting means 19 is also used as an attachment site for the kneaded material reservoir 20 disposed on the upper portion thereof. For example, a cup-shaped member having the same size and shape as a filling container such as an investment material can be used for the storage portion 20, and thereby a kneaded material 13 such as gypsum in an amount sufficient to satisfy several teeth. Can be stored.
[0023]
The reservoir 20 is provided with an outflow hole 21 that continuously discharges the kneaded product 13 by the vibration of the vibration transmitting means 19 and stops discharging the kneaded product 13 when the vibration stops. The outflow hole 21 is provided at an appropriate position of the vibration transmission means 19 so that the discharged kneaded material 13 is transmitted through the vibration transmission means 19. If the outflow hole 21 can be blocked with a fingertip, the degree of freedom increases. For this purpose, for example, the hole position may be shifted from the center of the reservoir 20 toward the dominant finger (usually right, otherwise left).
[0024]
The tip 22 for allowing the kneaded material 13 that has flowed out of the container 20 to vibrate to be supplied to the target location is positioned below the vibration transmitting means 19. The tip 22 transmits the kneaded material 13 transmitted through the vibration transmitting means 19 further downward, and is on the extension of the vibration transmitting means 19. Structurally, the tip 22 has a function of moderately buffering the vibration generated by the vibration generating mechanism, and has a flexibility so as not to be deformed or damaged when contacting a target portion such as a tooth mold. Must be in form.
[0025]
In the illustrated embodiment 1, several types of chips 22-1, 22-2... Detachably fitted to the upper vibration transmission means 19 are prepared, and the optimum chip can be replaced and used. . As described above, the important properties required for the chips 22 are buffer and flexibility. The tip of the brush tip is best for buffering. However, if the hair ends are too long, the vibration of the entire tip will be weakened, and air remaining between the hairs will be increased, so care must be taken.
[0026]
For this reason, the tip body 23 is formed using a rubber-based material having a buffering action and vibrating strongly, and the hair tips 24-1 and 24 having a necessary length are combined without any other member. -2 are combined to form chips 22-1, 22-2, 22-3,. The rubber-based material is less likely to be deformed or damaged even if it contacts the side of the wax pattern. Whether such a chip 22 is provided integrally with the vibration transmitting means 19 or whether it is a separate body, that is, a removable type as shown in the figure, can be arbitrarily selected.
[0027]
The configurations of the vibration transmitting means 19, the kneaded material reservoir 20 and the flexible tip 22 in the apparatus of the present invention and their relationship are not limited to those described in the first embodiment. Another example will be described with reference to FIGS. 5A, 5B, 5C, and 5D. In the second embodiment shown in FIG. 5A, the member that is the vibration transmitting means 19 has a structure that penetrates the storage portion 20 of the kneaded product 13, and the kneaded product is placed at an appropriate location of the storage portion 20. The hole 21 for the outflow of 13 opens. In the second embodiment, vibration is directly applied to the kneaded material 13 by the vibration transmission means 19 that penetrates.
[0028]
In the third embodiment shown in FIG. 5 (b), the fitting portion 31 for fitting the end of the vibration transmitting member 19 'and the tip 22 are fitted to the outside of the kneaded material reservoir portion 20. It has a coupling means 33 composed of a part 32. Therefore, the vibration transmitting member 19 ′ and the coupling means 33 constitute the vibration transmitting means 19 from the vibration generating mechanism to the chip 22 in the second embodiment. The outflow hole 21 of the kneaded product 13 opens at an appropriate location of the reservoir 20.
[0029]
The thing of Example 4 shown in FIG.5 (c) is an example of the structure by which the storage part 20 itself also comprises the vibration transmission means 19. FIG. For this reason, the side wall of the reservoir 20 has a portion 34 having an appropriate thickness, one end of which serves as a coupling portion 35 with the holding portion 18, and the other end is the same as that for mounting the chip 22. A similar fitting portion 32 is formed. Also in this example, the outflow hole 21 is provided at a location where the kneaded material 13 receives vibration and flows along the tip 22.
[0030]
The thing of Example 5 shown in FIG.5 (d) can be said to be an example which has the minimum vibration transmission means. That is, the drive source 12 composed of a motor provided with the eccentric weight 14 is built in the holding cylinder 36 at the tip of the main body, and the fitting part 32 for attaching the chip 22 is provided at the tip of the holding cylinder 36. The holding cylinder 36 may be considered equivalent to the holding body 18 in the first to fourth embodiments so far, but also serves as the vibration transmitting means 19 at the same time. The housing portion such as a motor and the chip fitting portion 32 are preferably separated by a partition wall 37. Moreover, the outflow hole 21 is provided in a suitable location.
Next, the operation of the casting device for dental mixture of the present invention will be described together with the method of use.
[0031]
First, for example, a kneaded dental mixture 13 such as an investment material is scooped out from a kneader using a spatula or the like and stored in the storage unit 20. Next, when the operator 11 is pushed by holding the main body 11 and at the same time the tip of the tip 22 is immersed in the above-mentioned investing material or the like and vibrated for a while, the tips of the hair tips 24-1 and 24-2 are placed on the tips. Some things can be evacuated from there.
[0032]
In a state where a small amount of investment material or the like is attached, the chip 22 vibrates with finer vibrations than when nothing is attached due to its weight. This is conspicuous when the chip body 23 is made of a rubber-based material, and is particularly convenient for pouring work such as investment material. When the investment material or the like flowing out from the outflow hole 21 reaches the tip end, the preparation for pouring is completed. In this state, the investment material or the like is kneaded from the filling container outflow hole to the tip of the tip, but the smooth movement and prevention of “sagging” of the investment material or the like can be adjusted by the flow angle.
[0033]
In order to pour the investment material into the inner surface of the wax pattern of the casting crown using this apparatus, as shown in FIG. 6, the tip end of the chip is kept in contact with the side surface of the inner surface of the pattern while the vibration is stopped. When vibration is applied here, the investment material which is the kneaded material 13 flows down to the tip end and flows down to fill the wax pattern 25 from the deepest portion, and at the same time, bubbles B on the inner surface of the wax pattern 25 are generated. An operation of lightly tracing an easy place is performed (see FIG. 7A). The above operation is performed until the investment material (13) overflows from the margin portion 26 where the bubble B of the wax pattern 25 is likely to be generated (FIG. 7B), and then the tip of the chip is extracted from the investment material (13).
[0034]
By repeating the above operation, even when there are a plurality of wax patterns 25, the investment material (13) can be filled in the wax pattern quickly and easily without introducing bubbles. Further, in the portion 27 having a large unevenness such as the occlusal surface of the wax pattern (FIG. 8), the tip 22 is brought into contact with the occlusal surface and then vibrated and expanded to the surroundings so as to extend lightly. The investment material (13) can be poured without making.
[0035]
The operation of pouring gypsum into the inner surface of the impression tooth mold may be basically the same as the operation of pouring the investment material into the inner surface of the cast crown pattern. The plaster which is the kneaded product 13 is filled in the inner surface of the tooth mold formed by the impression material 29 in the tray 28, and at that time, the chip 22 is placed at the deepest part of the tooth mold while the vibration is stopped. By making it, gypsum can be reliably induced | guided | derived.
[0036]
In the same way as described above, the bubble B that remains should be raised by gently tracing the inner surface with the flexible tip of the tip 22 and directly contacting the tip of the vibrating tip with the bubble B. In the pouring operation of the kneaded material 13 according to the present invention, the pouring can be performed without using the vibration of the vibrator on the table which has been conventionally performed. Further, the kneaded material 13 such as the investment material or gypsum is subjected to vibration in the filling container 20, so that curing is delayed, and there is an effect that a little margin is provided in the working time.
[0037]
In the apparatus of the present invention, when the vibration is stopped, the kneaded product 13 is designed not to flow out from the outflow hole 21, and the kneaded product 13 flows due to vibration, and the flow state is adjustable by the inclination. It has already been explained. Furthermore, in the present invention, it is possible to flow out of the outflow hole 21 by changing the size (area, cross-sectional shape, etc.) of the outflow hole 21 or changing the rotational speed of the driving source such as the motor 12 to adjust the strength of vibration. The amount and speed of the kneaded product 13 can be positively controlled.
[0038]
【The invention's effect】
Since the present invention is configured and operates as described above, the dental mixture is poured into the target portion such as the deepest part of the inner surface of the tooth mold in small amounts and continuously until the tooth mold is sufficiently filled. Since there is less risk of entrainment of bubbles, and a bubble that remains in the unlikely event that a flexible tip is brought into contact with the target location, it can be lifted away from the inner surface of the tooth mold so as to lift the bubble directly. Can be removed, and there is a remarkable effect that there is no risk of deformation or damage of the tooth mold surface.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a first embodiment of a dental kneading apparatus according to the present invention.
FIG. 2 is a front view of the distal end portion.
FIG. 3A is a longitudinal sectional view of an apparatus according to Embodiment 1 of the present invention.
(B) The BB sectional view of Drawing (a).
FIG. 4A is a longitudinal cross-sectional explanatory view of a kneaded material outflow portion.
(B) Cross-sectional explanatory drawing of a kneaded material outflow part.
5A is a cross-sectional explanatory view showing Example 2. FIG.
(B) Cross-sectional explanatory drawing which shows Example 3. FIG.
(C) Cross-sectional explanatory drawing which shows Example 4. FIG.
(D) Cross-sectional explanatory drawing which shows Example 5. FIG.
FIG. 6 is a cross-sectional explanatory view showing an example of a usage state.
FIG. 7A is a cross-sectional view showing an example of a bubble remaining portion.
(B) Sectional drawing which shows the other example of a bubble residual part.
FIG. 8 is an explanatory cross-sectional view showing another example of the usage state.
FIG. 9A is a cross-sectional explanatory view showing an example of filling a kneaded product.
(B) Cross-sectional explanatory drawing of the state which separates a bubble.

Claims (8)

A device having a main body for grasping with one hand and a vibration generating mechanism provided in the main body, and capable of facilitating the pouring of a dental mixture by the vibration, wherein the vibration generating mechanism is connected to the tip of the main body. A storage unit for the kneaded product is arranged in one of the vibration transmitting means for transmitting the generated vibration, and the kneaded product that has flowed out from the part can be supplied to the target location. A dental mixture pouring device, characterized in that a flexible tip capable of contacting with the other of the vibration transmitting means can be attached integrally or separately. 2. The dental kneading apparatus according to claim 1, wherein the vibration generating mechanism comprises a motor having an eccentric weight. The dental kneading apparatus according to claim 1, wherein the kneaded product storage portion has an outflow hole that continuously discharges the kneaded product by vibration and stops discharging the kneaded product when the vibration stops. 2. The dental kneading apparatus according to claim 1, wherein the vibration transmitting means comprises an independent member interposed between the holding portion for amplifying the vibration generated by the vibration generating mechanism and the tip. The dental kneading apparatus according to claim 1, wherein the kneaded material storage part simultaneously constitutes a vibration transmitting means. 2. The dental kneading apparatus according to claim 1, wherein the tip can be used by exchanging several types of tips detachably provided on the vibration transmitting means. 4. The dental blending device according to claim 3, wherein the tip has a brush tip-like hair tip at the tip. 5. The dental kneaded product according to claim 4, wherein the strength of vibration transmitted to the holding portion and the vibration transmitting means located at the tip thereof can be adjusted by adjusting the position of the motor body having an eccentric weight at the tip of the main body. Casting device.

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