JPS63119752A - Wax build-up molding apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a wax build-up molding device used when forming a denture model using dental wax on a jaw model taken from a patient. This is an attempt to improve the part that performs the build-up forming work.

<Prior art> Generally, in wax build-up molding work in dental technology, a wax spatula is first heated to soften or melt the solid wax, then warmed again to make it liquid, and then applied to the part to be molded. The work of raising the teeth is usually repeated more than 10 times for each tooth.In the past, each time this work was performed, the technician's viewpoint would shift away from the part to be molded, making it difficult to concentrate and work extremely inefficient. To solve this problem, for example, there is a technique disclosed in Japanese Utility Model Publication No. 61-6900.

In this technique, wax is heated and melted in advance, and the wax is gradually allowed to flow down onto the spatula. In addition, as a wax pouring structure, for example,
There is a technique disclosed in Publication No. 048. This technique is used when forming dowels such as post crowns, and has a dish-shaped part that retains molten wax and a needle-shaped part formed at an angle to this dish-shaped part. Through the grooves formed in this needle-like part, it is poured into the pores for forming the dowel.

<Problems to be Solved by the Invention> In the former prior art described above, since the wax is heated and melted in advance, there is a time lag before the building up work is performed, and during this time the components of the wax are separated. There is a problem that it may deteriorate or deteriorate.

In the latter prior art described above, molten wax held in a dish-shaped member is poured into a hole through a needle-shaped member, and a minute amount is poured around the crown, occlusal surface, etc., and built up, or the cusp is shaped. It is unsuitable for detailed work.

The present invention solves these problems.

Means for Solving Problems〉 The wax build-up molding device according to the present invention includes a gripping portion having a through hole, a molding portion fixed to the tip of the cough gripping portion, and a molding portion inserted into the through hole of the gripping portion from the rear end. A wax rod that descends under its own weight, a wax melting section whose one end is supported by the molding section and whose other end is above the molding section and projects on the line in the descending direction of the wax rod, and a heater that heats the wax melting section and the molding section. , a stop member that prevents the wax rod from descending between the tip of the gripping portion and the wax melting portion; an operating portion that moves the stop member back and forth to bring the tip of the wax rod into contact with or away from the wax melting portion; , the tip of the wax rod, which is lowered by its own weight and stopped by the stopper member, is brought into contact with the wax melting portion heated by the heater by the operation of the operation part, and the wax is melted. A wax build-up molding device that melts a rod and builds up the molten wax in the molding section,
The forming part includes a first retention part having a capacity where wax flows down from the wax melting part and retains an amount of wax necessary for multiple building up operations, and a first retention part in front of the first retention part.
? A second retention part is located diagonally downward with respect to the rrt retention part, has a capacity to retain the amount of wax necessary for one heaping operation, and has a narrow groove that opens forward at the tip. and a narrowed part having a groove that connects the second retention part and the first retention part and allows wax to flow from the first retention part to the second retention part.

Function When using the device, when holding the device like holding a fountain pen, the grip portion is supported in an inclined state. As a result, a force acting on the wax rod causes it to descend downward due to its own weight. Therefore, the wax rod comes into contact with a stop member provided at the tip of the grip portion and is stopped. By operating the control panel,
By advancing the stop member and bringing the wax rod into contact with the wax melting section, the wax rod melts from its tip, flows down along the wax melting section, and is retained in the first retention section of the molding section. The wax rod descends under its own weight as its tip melts and flows out. As a result, the tip of the wax rod is always in contact with the stop member. When the amount of melted wax reaches a predetermined amount, the stop member is moved back by operating the operating section, and the tip of the wax rod and the wax melting portion are separated from each other. Here, the amount of wax stored in the first retention part is approximately set to the amount required for about 3 to 5 building operations, for example, about 0.
It is about 0.05 to 0.1 cc. By slightly tilting the apparatus forward, the wax accumulated in the first retention part is poured into the second retention part through the groove of the narrowed part in an amount approximately necessary for one heaping operation. After that, the second
The wax that has stayed in the retention section is poured into the molded section through the narrow groove at the tip. Since the capacity of this second retention section is approximately 0.01 to 0.04 cc, the wax stored in the second retention section is divided into about 3 to 5 times from the first retention section to the second retention section. It is poured into the retention section.

Embodiments In FIGS. 1 to 3, reference numeral 1 denotes an elongated rod-shaped grip made of plastic or the like and has a through hole 2. As shown in FIGS. Reference numeral 3 denotes a wax melting part fixed to the tip of this gripping part via a heat radiation tube 4, 5 a molding part fixed to the lower end of this wax melting part 3, and 6 a heater embedded in the wax melting part 3. The wax melting section 3 and the forming section 5 are heated.

Power is supplied to the heater 6 through a cord 7 that passes through the heat dissipation tube 4 and the grip portion l and is taken out from the rear end of the grip portion 1. 8 is a stop member attached to the grip portion 1 so as to be movable back and forth, and 9 is a slide camera in which the stop member 8 is moved back and forth. A wax rod 10 is inserted into the through hole 2 of the grip part 1, and when the grip part 1 is lifted diagonally, the wax rod 10 descends due to its own weight, comes into contact with the stop member 8, and stops. Incidentally, in order to further improve the lowering of the wax rod 10 due to its own weight, a weight may be fixed to the rear end of the wax rod 10.

The diameter of the through hole 2 of the gripping part 1 is determined by the diameter of the wax rod 10 used.
It is necessary to have a slightly larger value, and in the case of a wax rod with a diameter of 4+n, the diameter is about 5 to 71). The wax melting section 3 has a substantially columnar shape, and its lower end is fixed to the molding section 5, and its upper end projects on the line in the descending direction of the wax rod 10. The molding section 5 has a first, elongated dish shape in which the wax flowing down from the wax melting section 3 stays.
A retention part 1) and a second retention part 1), which is similarly elongated and dish-shaped, is provided in front of the first retention part 1) and inclined diagonally downward by about 15° to 20'' with respect to the first retention part 1). It consists of a retention part 12 and a narrowing part 13 that connects these first and second retention parts 1).
It has a capacity capable of retaining the amount of wax necessary for approximately 3 to 5 times of building up work, and the second retention section 12 can normally retain the amount of wax required for one time of building up work. Has capacity. During actual work, the amount of wax will vary depending on the size and shape of the tooth, but the capacity of the first retention section 1) will be approximately 0.05 to 0.1 cc.
The capacity of the second retention section 12 is about 0. Ol to 0.
Approximately 04 CC is appropriate. 4 is a narrow groove formed at the tip of the second retention part 12, and has an open end at the front;
The wax is made to flow down to the part to be molded through this narrow groove 14 in a dot or line pattern. Reference numeral 15 denotes a groove formed on the surface of the narrowed part 13, which allows the wax accumulated in the first retention part 1) to flow into the second retention part 12. The narrowed portion 13 is formed to be thin in both the horizontal and vertical directions, and is positioned upward in the vertical direction. As a result, the groove 15 is also located upward, and the wax accumulated in the first retention part 1) is transferred to the first retention part 1).
Unless it is tilted considerably forward, it will not flow into the second retention section 12. The horizontal depression C is shown in Figure 2, and the third
The figure shows a depression D on the bottom surface. The molding part 5 and the wax melting part 3 are made of a metal with good thermal conductivity, such as copper, brass, nickel, etc.
Made of chromium alloy, cobalt-chromium alloy, etc.

These wax melting section 3 and molding section 5 are heated to about 100° C. by a heater 6. The heating temperature by the heater 6 is approximately 80°C to 120°C depending on the material of the wax.
It is set in the range of °C.

In the apparatus configured as described above, by pushing the slide camera 9 with a finger in the direction of arrow A, the stop member 8 is moved forward,
The tip of the wax rod 10 is inserted into the heated wax melting section 3
contact with. As a result, the wax rod 10 is melted, flows down along the wax melting section 3, and is retained in the first retention section 1) of the forming section 5. The amount of wax to be melted is determined by the stop member 8.
This is determined by the amount of time it takes to push the material forward, and this is determined by the technician taking into account the construction work. When the amount of wax reaches a predetermined amount, the slider 9 is moved in the direction of arrow B, the stop member 8 is separated from the wax melting part 3, and the melting of the wax is stopped. Incidentally, if a spring is built into the gripping part 1 and the elastic force is always applied to the slider 9 in the direction of arrow B, the stop member 8 and therefore the tip of the wax rod 10 can be moved when the wax is not melted. The wax melting part 3
It can be kept separate from the

In the apparatus having the above structure, when the wax rod 10 is applied to the wax melting section 3 to melt the wax, and then the stop member 8 is moved back to separate the wax rod 10 from the wax melt section 3, the stop member 8 It will be in a state where it is buried in the tip part of the rod 10.

Therefore, the wax rod 10 is fixed by the stop member 8, and the wax rod 10 will not fall out from the rear end of the through hole 2 even if the grip portion 1 is tilted in the opposite direction.

Furthermore, since the tip of the wax rod 10 is fixed by the stop member 8, the wax rod 10 may receive radiant heat from the wax melting section 3 and the forming section 5, softening and bending downward. do not have.

During the wax build-up molding operation, a predetermined amount of wax retained in the second retaining section 12 of the molding section 5 is caused to flow down around the crown, occlusal surface, cusp head, etc. As shown in FIG. 4, when molding the periphery of the tooth neck a of the model tooth 16, the second
This is done by stroking the poured wax on the lower surface of the retention section 12, but during this operation, due to the presence of the depression D, other parts of the molding section 5 may come into contact with the bulge. There is little sex. Therefore, there is very little risk that the wax will come into contact with the wax of the already-formed bulge and melt and deform it. Further, as shown in FIG. 5, when forming the arc-shaped gap periphery C of the model painter 6,
Although there is a habit of contacting the corner d of the angle, the presence of the depression C minimizes the possibility of this happening.

<Effect of the invention> According to the present invention, the following effects can be achieved.

(a) The molded part is divided into a first retention part and a second retention part, and both retention parts are connected via a narrowed part. The amount of wax necessary for a plurality of building up operations is retained in the first retention section, and the amount of wax required for approximately one time of construction work is retained in the second retention section. Therefore, while checking the amount of wax required for one build-up operation in the first retention section, it is possible to allow the wax to flow down to the dyed build-up section. This structure makes it possible to perform fine shaping operations on the cusp, such as applying dots of wax or drawing lines.

(b) In the 24th retainer, the amount of wax necessary for several times of building up work is melted and retained immediately before the work, so there is no problem of alteration or deterioration of the wax.

(c) Since the narrowed portion is provided between the first retention portion and the second retention portion, the recesses formed in the lateral direction and the lower surface of the narrowed portion facilitate the construction work. In other words, the tooth model is
Due to the large number of irregularities, it is easy to cause an accident in which the lower surface of the mold comes into contact with a surface other than the area being worked on during the molding operation, melting the wax surface in this area, but according to the present invention, this problem can easily occur. The occurrence of accidents will be extremely reduced.

(d) The wax rod descends under its own weight as it is consumed, and its lower end is always in contact with the lower end of the stop member. A desired amount of wax is melted by bringing the tip of the wax rod into contact with or away from the wax melting portion by operating the stop member. As a result, no external force is applied to the wax rod, and even if the wax rod is softened by conduction and radiant heat from the heater or at room temperature and deformed by a slight force, it will maintain its original straight cylinder shape. The shape is maintained, the wax rod can be smoothly lowered and transferred within the gripper through-hole, and the wax can be melted quickly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a wax build-up molding apparatus according to an embodiment of the present invention, FIG. 2 is a top view of the molding part, FIG. 3 is a sectional view taken along line I-r in FIG. 2, and FIG. FIG. 5 is a side view showing a - state of the build-up forming operation, and FIG. 5 is a top view showing another state of the build-up forming operation. l...Gripping part 2...Through hole 3...Wax melting part 5...Molding part 6...Heater
8...Stopping member 9...Slide photography 1
0... Wax rod 1)... First retention part 12.
...Second retention section 13...Stricture section 14...
Narrow groove 15...groove

Claims (2)

[Claims] (1) A gripping part having a through hole, a molded part fixed to the tip of the gripping part, a wax rod that is inserted from the rear end into the through hole of the gripping part and descends under its own weight, one end of which is supported by the molded part, etc. a wax melting part whose end side is above the molding part and protruding in the descending direction line of the wax rod; a heater for heating the wax melting part and the molding part; and a wax rod between the tip of the gripping part and the wax melting part. and an operating section that moves the stopping member back and forth to bring the tip of the wax rod into contact with or away from the wax melting portion, and the heater is operated by operating the operating section. The tip of the wax rod, which has descended under its own weight and is stopped by the stop member, is brought into contact with the heated wax melting section to melt the wax rod, and the molten wax is built up and formed in the forming section. A wax build-up molding device, wherein the forming section includes a first retention section having a capacity in which wax flows down from the wax melting section and retains an amount of wax necessary for multiple build-up operations, and the first retention section. A narrow groove is located in front of the retention part and is inclined diagonally downward with respect to the first retention part, has a capacity to retain the amount of wax necessary for one heaping operation, and has a forward opening at the tip. and a narrowed part having a groove that connects the second retention part and the first retention part and allows wax to flow from the first retention part to the second retention part. Wax build-up molding equipment (2) The wax build-up molding device according to claim 1, wherein the narrowed portion has a lateral depression and a depression on the lower surface.