JPH0529499Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a jaw model used for training in impression taking (intraoral impression work) at dental universities, dental hygienist schools, etc.

Prior Art Although conventional jaw models for impression training were generally satisfactory in terms of shape and material of the mucous membrane surface, they had a drawback in that the hardening speed of the impression material during training was different from that during clinical use.

Impression materials include those whose main ingredients include alginates, polysulfides, silicone resins, agar, and natural resins, all of which are affected by temperature during curing.

For example, the widely used alginate impression materials and silicone impression materials have the property that their hardening is accelerated by high temperatures, such as those found inside the mouth. In the case of modeling compounds used for functional impressions when making dentures, they are heated and hardened before being used to take the impression, and then soften when cooled.

When practicing using these impression materials and conventional models, for example, the former does not accelerate hardening because the temperature is not as high as in the clinical oral cavity.
It took a long time to cure, and if it was taken out at the clinical setting time, it would sometimes become deformed because it was not cured.

Moreover, in the latter case, on the contrary, it cured quickly, so it was not possible to obtain the same working time as in the clinical setting.

In practical training, this difference in curing speed makes it difficult to learn the operating time required for impression work and the timing to take out the impression material from the oral cavity, and also causes a decline in the accuracy of the impressions taken. It became.

Problems to be Solved by the Invention The object of the invention is to provide a jaw model that allows training such as impression taking to be carried out under the same temperature conditions as in clinical practice.

Means for Solving the Problems In the present invention, in a jaw model on which the jaw mucosa is formed on the support base, a heating element and a heat conductive plate are provided inside the support base to make it possible to heat the jaw mucosa. Therefore, the above problem was solved.

That is, in the jaw model of the present invention, a heat insulating material is filled inside the support base, the jaw mucous membrane is positioned on the heat insulating material via a heat conductive plate, and a heating element is attached to the heat conductive plate. A temperature sensor is attached between the heat conductive plate and the jaw mucous membrane surface, and the heating element and temperature sensor are connected to a temperature control device.

In this invention, a heating element is built into the jaw model, and the temperature of this heating element is adjusted by a temperature control device, so that the temperature of the mucous membrane surface of the jaw model is equal to the actual temperature of the mucous membrane surface in the oral cavity. Since the temperature can be set at a temperature that is almost equivalent to that or the temperature that the instructor deems appropriate, it is possible to conduct training that is similar to clinical practice.
It becomes easier to learn the time required for impression work and the timing to take out the impression material from the oral cavity, and it also becomes possible to practice highly accurate impression taking.

Note that the shape and material of the support base of the jaw model in the present invention are not particularly limited, and may be formed in the same manner as a general jaw model. In addition, the jaw mucosa is preferably formed from a material that has a feel and properties similar to the human oral mucosa, and is preferably made of synthetic rubber such as soft urethane resin, polyvinyl chloride, thiokol rubber, and silicone rubber, or soft rubber such as natural rubber. , preferably formed in layers.

Further, as the heat insulating material, any material having a heat insulating effect such as epoxy resin, foamed urethane, foamed styrene, silicone rubber, and other rubbers can be used.

The heat conduction plate can be made of any material with good thermal conductivity, such as zinc plate, copper plate, iron plate, or stainless steel plate. It is preferable that the shape is formed by pressing or casting.

Embodiments Next, the present invention will be explained in more detail according to embodiments shown in the drawings.

In this example, the support base 1 is formed into a hollow box shape using epoxy resin, and is filled with a heat insulating material 4 made of polyurethane foam. A jaw mucous membrane 2 made of urethane is formed.

Both the jaw mucous membrane 2 and the jaw mucosa surface 5 are formed into a substantially uniform layer, and a heating element 6 is attached to the back surface of the heat conductor panel 5. A sensor 7 is attached and connected to a temperature control device 8, so that the temperature of the jaw mucous membrane surface 3 is controlled by the heat generated by the heating element 6.

In addition, this temperature control device 8 adjusts the heating of the heating element 6 using the control circuit when the temperature is set using the temperature adjustment dial, and adjusts the temperature of the jaw mucous membrane surface 3 via the heat conductive plate 5. can be adjusted to the desired temperature.

In this embodiment, a planar heating element (8V, 3.2W) manufactured by Sakaguchi Dentsu Co., Ltd. is used as the heating element 6, and a digital temperature sensor module DM-1 type manufactured by Ishizuka Denshi Co., Ltd. is used as the temperature control device 8. If you set the desired temperature in advance using the digital temperature sensor module, the digital temperature sensor module will digitally compare the set temperature and the temperature of the jaw mucosal surface 3 using the temperature sensor 7 attached to the jaw mucosal surface 3. , which electrically controls a planar heating heater.

Effects of the invention The jaw model of this invention can set the temperature of the jaw mucosal surface to be almost the same as the actual mucous membrane temperature in the oral cavity.
It becomes possible to practice impression taking similar to clinical practice, and it becomes easier to learn the operation time of impression work and the timing to take out the impression material from the oral cavity, making it possible to take highly accurate impressions.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. DESCRIPTION OF SYMBOLS 1... Support stand, 2... Jaw mucosa, 3... Jaw mucosal surface, 4... Heat insulating material, 5... Heat conduction plate, 6... Heating element, 7... Temperature sensor, 8... Temperature control device .

Claims (1)

[Scope of utility model registration request] A jaw mucous membrane 2 is formed in a layered manner on a support base 1 using soft rubber, a heat insulating material 4 is filled inside the support base 1, and a heat conductive plate 5 is placed on the heat insulating material 4.
The jaw mucosa 2 is formed through the
A heating element 6 is attached to the heat conduction plate 5, and a temperature sensor 7 is installed between the heat conduction plate 5 and the jaw mucosa surface 3.
The heating element 6 and the temperature sensor 7 are connected to a temperature control device 8. A signal from the temperature sensor 7 is input to the control device 8, and the heating element 6 and the temperature sensor 7 are connected to a temperature control device 8. heating element 6
A jaw model for dental training, characterized in that the temperature of the jaw mucosal surface 3 is controlled to the oral cavity temperature.