JPH0431049Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a dental impression material that maintains the impression material in a fluid state when a dentist casts a denture. Concerning improvements to heating and constant temperature devices.

When a dentist treats a patient's teeth and attaches a denture such as a crown or bridge, the dentist first shaves off the tooth to be treated, melts and pours an impression material such as agar into the tooth, and then pours the impression material into the tooth. Once it has hardened, it is removed from the patient's tooth, an impression is taken, and plaster is poured over the impression to create a model with the same shape as the patient's tooth.
Next, based on this model, wax teeth of the same shape as the dentures to be made are made, and these are embedded in plaster.The plaster is baked to create a mold of melted wax, and metal is poured into it to make the dentures. This is done in the order in which the denture is cast and the denture is fitted.

In this process, the dentist performs the cutting treatment of the tooth to the taking of an impression of the tooth, but the rest of the process, from the step of creating a model from the taken impression, is usually performed by a technician.

For this reason, when dentists plan to take impressions from successive patients, they heat cartridges or syringes filled with impression material so that the impression material can be injected immediately. The impression material is kept in a molten state by being loaded into a thermostat.

By the way, as shown in FIG. 1, the heating and constant temperature apparatus A that keeps the impression material in a molten state is usually made by forming a block 1 from a metal material such as an aluminum alloy, and then forming a block 1 from a metal material such as aluminum alloy. As shown in the figure, a cartridge 2 containing an impression material a such as agar or the like, or a hole 4 into which a cylinder 3 (injection tube), in which the impression material a is preloaded as shown in Fig. 3, can be freely inserted and removed. Form an appropriate number of ..., and machine frame 5.
A controller 6 for controlling an electric heater attached to the metal block 1 is separately attached to the machine frame 5, and the metal block 1 is maintained at a desired temperature by the controller 6. It has been done. And with this,
First, the cartridge 2 and syringe 3 are inserted into the holes 4, and by operating the controller 6, the temperature of the metal block 1 is maintained at a temperature close to 100 degrees, at which the impression material a melts, for a predetermined period of time, and the impression is made. The material a is brought into a molten state, and then the controller 6 is switched so that the metal block 1 is maintained at a temperature of about 60 degrees, and the molten impression material a is maintained in that state.

By the way, the heating and constant temperature device A for dental impression materials constructed in this way has a cartridge 2 or a syringe 3 inserted into the hole 4 formed in the metal block 1 to be heated and kept warm. but,
If the syringe 3 is formed into a straight cylinder as shown in FIGS. 2 and 3 above, there will be no problem in its use, but the sideward bending angle of the injection tube 30 at the tip of the syringe 3 may cause a problem. When the injection tube 30 is of a larger size as shown in FIG. 4, the injection tube 30 is bent to the side when inserted into the hole 4.
This causes the inconvenience that the material becomes stuck on the rim of the hole 4, making it impossible to insert it. This can be done by increasing the diameter of the holes 4 formed in the metal block 1, but if this is done, a large free space will be formed around the syringe 3 inserted there. , a problem arises in that the efficiency of heat conduction deteriorates due to contact between the inner circumferential wall of the hole 4 and the outer circumferential surface of the cylinder portion 31 of the syringe 3.
If the slit-like holes for inserting the holes are continuously provided, another problem arises in that the machining is difficult and the cost is high.

The present invention was made in order to solve this problem that occurs in the conventional means, and the hole 4...
While maintaining good heat conduction from the metal block 1 to the cartridge 2 and syringe 3 inserted into the injection tube 30, the injection tube 30 can be easily inserted into the hole 4 of the syringe 3 having a large bending angle. The purpose of the present invention is to provide a means for configuring a heating constant temperature device for dental impression materials that can be easily manipulated.

In the present invention, as a means to achieve this purpose, a metal block with a built-in electric heater controlled by a controller is installed.
Vertical holes for accommodating a cartridge and a syringe for enclosing the impression material are arranged and arranged in parallel in a ring shape in a plan view, and a vertical slit-shaped hole continuous to the edge of the hole is provided. This invention proposes a heating and constant temperature device for dental impression materials, which is formed so as to span between each hole and the peripheral surface of a metal block when viewed from above.

Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for constituent members having the same effect as those of the previous means.

FIG. 5 is a perspective view of the entire heating constant temperature device A for dental impression materials in which the present invention can be implemented;
is a metal block made of metal materials such as aluminum alloy,
4... is a vertical hole formed in the metal block 1, b... is a vertical slit-shaped hole formed continuously with the hole 4, 5 is a machine frame on which the metal block 1 is assembled and supported, 50 indicates a protective cover for the metal block 1.

The metal block 1 is formed into a cylindrical shape from a metal material with good thermal conductivity such as an aluminum alloy, and as shown in FIG. It is supported in a vertical position.

Vertical holes 4 for inserting the cartridge 2 and the syringe 3 are formed in the metal block 1, and the holes 4 are located at the peripheral edge of the metal block 1 in a plan view. The metal blocks 1 are arranged in parallel in a ring shape and are formed so as to penetrate the metal block 1 vertically (FIG. 6).

Also, in the metal block 1, a vertical slit-shaped hole b continuous to the edge of the formed hole 4 is formed so that when the syringe 3 is inserted into the hole 4, the injection tube at the tip of the syringe 3 is inserted into the hole 4. The holes b... are formed in such a way that the holes 30 are fitted into the metal block 1, and the holes b... The outer edges of the holes b... are formed in the metal block 1.
It is provided so as to open on the outer peripheral surface of.

Further, the metal block 1 has a blind hole-like hole whose top surface is closed at its axial center, which is hollowed out from the bottom surface, into which an electric heater h is fitted. be equipped. The circuit of the electric heater h is controlled by a control board 60 and a thermistor 61, as shown in FIG. Each time the switch 62 and the restart switch 63 are operated, the metal block 1 is maintained at a temperature around 100 degrees Celsius for a certain period of time,
Thereafter, the operation is automatically switched to maintain the metal block 1 at a temperature of around 60 degrees Celsius. In FIGS. 5 and 7, 64 is a main lamp indicating that the main switch 62 is on, and 65 is a main lamp that indicates that the metal block 1 is heated to 100 degrees Celsius.
The readiness lamp 66 indicates that the electric heater h is operating to maintain the metal block 1 at a storage condition temperature of about 60 degrees Celsius. 67 is a power cord.

The embodiment device constructed in this manner operates as follows.

Connect the power cord 67 to a commercial power supply, insert the cartridge 2 or syringe 3 to be used into the hole 4 formed in the metal block 1, and turn on the main switch 62. is the temperature at which the impression material a in the cartridge 2 or syringe 3 inserted into the hole 4 provided therein is held at a temperature that melts it for a predetermined period of time, and then the temperature at which the impression material a is kept in a molten state. will be controlled to maintain the

When the syringe 3 to be inserted into the hole 4 formed in the metal block 1 has an injection tube 30 provided at the tip of the cylinder bent sideways, the syringe 3 is inserted into the hole 4 formed in the metal block 1. The injection tube 30 is inserted into a vertical slit-shaped hole b formed continuously on the edge of the hole 4. As a result, the hole 4 formed in the metal block 1 for inserting the cartridge 2 or the syringe 3 is fitted with the cylinder portion 31 of the syringe 3, which has a somewhat larger outer diameter than the cartridge 2. This allows the metal block 1 to be formed to have a larger inner diameter, thereby improving heat conduction from the metal block 1 to the inserted syringe 3.

The above-mentioned hole b into which the injection tube 30 bent to the side of the tip of the syringe 3 to be inserted is fitted is,
Metal blocks 1 are arranged in a ring shape in plan view.
Since the holes 4 are formed radially so as to connect the outer peripheral surface of the metal block 1 with the holes 4 formed in the metal block 1, when the metal block 1 is formed by casting, the holes 4...
Even in the case of integrally forming the same or by cutting after casting, it can be formed easily without the need for troublesome machining.

Next, FIG. 8 shows another embodiment. In this embodiment, a separately formed cylindrical body c is fitted to the outer periphery of the metal block 1 in the above-described embodiment, and the outer ends of each hole b opening in the shape of a cleavage on the outer periphery of the metal block 1 are formed. This is an example in which the side is sealed, and the rest of the structure is the same as the previous embodiment except for this point, and the same reference numerals are given to the constituent members having the same effect, and detailed explanation will be omitted.

This embodiment differs from the previous embodiment in that the outer end side of the hole b... is open in the shape of a cleavage on the outer peripheral surface of the metal block 1, so that the syringe 3 or the cartridge 2
The heat retention efficiency in the holes 4 into which the metal blocks 1 are inserted is somewhat degraded, but the cylindrical body c fitted on the outer periphery of the metal block 1 prevents each hole 4 from communicating with the outer peripheral surface of the metal block 1. Since the holes are closed and closed, the flow of air inside each hole 4 is suppressed and the efficiency of heat conduction is improved.

Since the cylindrical body c that functions in this manner is simply formed separately and placed over the outer periphery, the benefit of facilitating the formation of the metal block 1 and the holes b . . . is not impaired.

Next, FIG. 9 shows a further different embodiment. In this embodiment, holes 4 formed in a metal block 1 for inserting and accommodating a cartridge 2 and a syringe 3 are arranged and arranged in parallel in an annular manner in a plan view. …
Vertical pore b formed continuously on the pore edge of...
are arranged radially in a plan view, which is the same as in the embodiment described above, but the metal block 1 has an annular columnar shape having a through hole d vertically penetrating the metal block 1 at its axial center. The holes 4 are formed in the body, and each hole b is arranged in an annular manner.
The hole edge and the inner wall surface of the through hole d, which is the inner peripheral surface of the metal block 1, are formed so as to communicate with each other.

Further, the electric heater h buried in the metal block 1 is located on the outer peripheral edge side of the metal block 1 located outside the holes 4 arranged in an annular manner, as shown by the chain lines in FIGS. 9 and 10. An annular groove is formed from the bottom side of the metal block 1 as shown in FIG.

In this embodiment, the holes b... provided continuously at the edges of the holes 4... are formed so as to span between the holes 4... and the inner circumferential surface of the metal block 1. Since the relationship is just reversed, the hole b can be easily formed in the metal block 1 in the same manner as in the previous embodiment. Moreover, by opening the outer end of the hole b into the through hole d formed at the axial center of the metal block 1, the air inside the hole 4 can be removed without fitting the cylindrical body c to the outer peripheral surface. Flowing through the pores b is suppressed, and the efficiency of heat conduction can be maintained satisfactorily.

As explained above, the heating constant temperature device for dental impression materials according to the present invention consists of a metal block 1 in which a built-in electric heater h is controlled by a controller.
A cartridge 2 for enclosing the impression material a and a vertical hole 4 for accommodating the syringe 3 are arranged so as to be arranged in parallel in an annular manner in a plan view,
This is because the vertical slit-shaped holes b continuous to the edges of the holes 4 are formed so as to span between each hole 4 and the circumferential surface of the metal block 1 in plan view. , to the cartridge 2 and syringe 3 inserted into the hole 4 provided in the metal block 1,
While maintaining good heat conduction from the metal block 1, it is possible to easily insert the syringe 3, which has a large sideward bend angle of the injection tube 30, into the hole 4. 4... and the work to provide the holes b... becomes easier.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional heating and constant temperature device for dental impression materials, Figure 2 is a perspective view of a cartridge, Figure 3 is a perspective view of a syringe, and Figure 4 is a syringe with a large injection tube bending angle. 5 is a perspective view of a heating constant temperature device for dental impression materials that can implement the present invention, FIG. 6 is a longitudinal sectional front view of the same device, FIG. 7 is an electric circuit diagram of the same device, and FIG. FIG. 9 is a partially cutaway perspective view of another embodiment, FIG. 9 is a partially cutaway perspective view of still another embodiment, and FIG. 10 is a longitudinal side view of the same. Explanation of drawing symbols, A... Heating constant temperature device, a...
Impression material, b... Pore, c... Cylindrical body, d... Hole, h... Electric heater, S... Thermistor, 1
...Metal block, 2...Cartridge, 3...
Syringe (injection tube), 30... Injection tube, 31...
Cylinder section, 4... Hole, 5... Machine frame, 50... Protective cover, 6... Controller, 60... Control board, 61... Thermistor, 62... Main switch, 63... Restart switch, 6
4... Main lamp, 65... Preparation lamp, 66
...Storage lamp, 67 ...Power cord, 7
……control panel.

Claims (1)

[Scope of Claim for Utility Model Registration] An impression material a is attached to a metal block 1 in which a built-in electric heater h is controlled by a controller.
A cartridge 2 for enclosing a cartridge 2 and a vertical hole 4 for accommodating a syringe 3 are arranged and arranged in parallel in an annular manner in a plan view, and a vertical slit-like hole continuous to the edge of the hole 4 is installed. A heating constant temperature device for a dental impression material, in which a hole b is formed so as to span between each hole 4 and the circumferential surface of a metal block 1 in plan view. The hole b... is connected to the hole edge of each hole 4 and the metal block 1.
A heating and constant temperature device for dental impression materials according to claim 1, wherein the heating constant temperature device is provided so as to span between the outer circumferential surface of the dental impression material. A heating constant temperature device for dental impression materials according to claim 1, wherein a separately formed cylindrical body c is closely fitted onto the outer peripheral surface of the metal block 1. A dental impression material according to claim 1, in which a hole b is formed so as to span between the edge of each hole 4 and the inner circumferential wall of a through hole d formed at the axial center of the metal block 1. Heating constant temperature device.