JPH0540532Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an occlusal model attached to a mannequin for dental training, and more specifically, to an improvement of the buccal mucosa that is attached to this occlusal model and also serves as a water receptacle.

(Prior art) Various models of this type that have been proposed in the past can be roughly divided into three types: those that function as water receptacles in the oral cavity, those that have a face mask and buccal mucosa, and those that have only the buccal mucosa. Oral drainage treatment methods are divided into two types: a suction method using a vacuum device and a dripping method using a small hole in the oral cavity for drainage. These are intended for training in wastewater treatment during tooth cutting, and none are intended for taking impressions of dental arches.

(Problem to be solved by the invention) A concept similar to the idea of the present invention is disclosed in Utility Model Publication No. 59-28446 by the present applicant. This method has the disadvantage that the shape of the transitional part of the cheekbones cannot be accurately captured. This is because the dental model is a commercially available product and is not accurate, and there is nothing on the outside of the buccal mucosa to support it vertically. This is because the buccal mucosa rolls up from the buccal transition area toward the jawbone.

The present invention solves these problems by interposing the buccal mucosa member between the jawbone area and the dentition area, and by conducting training using an occlusal model that closely resembles the anatomical structure of the human oral cavity. , dental training to learn how to feel the buccal mucosa when cutting teeth or taking impressions, and to use a vacuum suction device to suction and remove fluids that accumulate in the oral cavity, such as water poured during cutting. The purpose is to provide an occlusal model for training.

(Means for Solving the Problems) The occlusal model for dental training of the present invention for achieving the above object will be explained based on embodiment drawings.

FIG. 1 is a side sectional view of the entire occlusal model, FIG. 2 is a front perspective view of the same, and FIG. 3 is a perspective view of the same from an obliquely upward direction.

That is, the occlusal model for dental training of the present invention has protruding peripheral parts 31,
The outer surfaces of the maxillary plate 3 and the mandibular plate 4 having 41 are fixed, and the inner surfaces 3 of the maxillary plate 3 and the mandibular plate 4 are fixed.
In the space between 8 and 48, there is an opening 5 whose outer surface is flush with the inner surfaces 38 and 48 and whose front part corresponds to the lips.
1, the bag body 50 is made of a soft stretchable membrane and has rows of teeth 63, 73 on the inside, and outer surfaces 69, 79 have cheek-to-buccal transition portions that can be joined to the protruding peripheral portions 31, 41 and of the rows of teeth. Chamfered portion 62 reaching 61, 71,
The upper jaw model 6 and the lower jaw model 7 having 72 are enclosed in the bag 50, and the outer surfaces 69 and 79 of the upper jaw model 6 and the lower jaw model 7 are attached to the inner surfaces 38 and 48 of the upper jaw plate 3 and the mandibular plate 4, respectively. The bag body 50 is sandwiched and fixed through the stretchable membrane, and the gist is that the bag body 50 serves as the buccal mucosa and water receiving member 5.

(Function) In the occlusal model of the present invention having the above configuration, the upper jaw support plate 1 and the lower jaw support plate 2 are pivotally connected, so that the upper jaw model 6 and the lower jaw model 7 are supported so as to be openable and closable, thereby reproducing jaw movement. However, from the purpose of this invention,
During practical use, the upper jaw model 6 and the lower jaw model 7 are normally maintained in an open bite state.

The maxillary plate 3 and the mandibular plate 4 fixed to the maxillary support plate 1 and the mandibular support plate 2, respectively, have their inner surfaces 38, 48
Next, the outer surfaces 69 and 79 of the upper jaw model 6 and the lower jaw model 7 enclosed in the bag body 50 are fixed, respectively, through the elastic membrane of the bag body 50. The inner surfaces 38, 48 of the maxillary plate 3 and the mandibular plate 4 have peripheral edges 31, 41 with projecting inclined surfaces.
forms the jawbone part of the occlusal model.

On the other hand, the upper jaw model 6 and the lower jaw model 7 have arcuate tooth rows 63 and 73 arranged inside, respectively.
73 forms the oral cavity of the occlusal model, but the upper jaw model 6
The outer surfaces 69, 79 of the lower jaw model 7 have chamfered portions 62, 72 that can be joined to the protruding inclined surfaces inside the peripheral portions 31, 41, and the chamfered portions 62, 72
reaches the cheek-to-cheek transition portions 61, 71 of the arched outer periphery of the tooth rows 63, 73.

The bag body 50 is formed of a soft stretchable membrane and has an opening 51 at the front, and this opening 51 corresponds to the lips of the occlusal model. This bag body 50 encloses the upper jaw model 6 and the lower jaw model 7, and the upper jaw model 6 is attached to the inner surfaces 38, 48 of the upper jaw plate 3 and the lower jaw plate 4.
Since it is clamped and fixed between the outer surfaces 69 and 79 of the lower jaw model 7, it becomes the buccal mucosa member 5 that surrounds the outside of the tooth rows 63 and 73.
The soft stretchable membrane at the cheek-cheek transition parts 61 and 71 is held between the protruding inclined surface and the chamfered parts 62 and 72 with difficulty in vertical movement, and the stretchable membrane is not rolled up to the outside when taking an impression. Therefore, it is possible to reliably take impressions of the cheek-to-cheek transition areas 61 and 71, which are important in producing a prosthesis.

Then, the bag 50 becomes a water receiving member 5 that does not leak water except for the opening 51 that resembles a lip. That is, since this bag body 50 constitutes a storage cavity for the above-mentioned liquid, another method is used to remove the above-mentioned liquid by suction using an aspirator or the like, which occurs during treatments such as tooth cutting and prosthesis filling. This is to provide practical training, and the buccal mucosa member 5 also serves as the water receiving member 5. Furthermore, this member 5 is sandwiched between the upper and lower jaw plates 3 and 4 and the upper and lower jaw models 6 and 7, so that it anatomically approximates the tooth and jaw structure of the human body. Its presence in the buccal mucosa of the human body is highly veritable and enhances the effectiveness of the training.

(Example) A typical example of the present invention will be described with reference to FIGS. 1 to 3.

In this embodiment, the upper and lower jaw support plates 1 and 2 are machined metal castings, the upper and lower jaw plates 3 and 4 are molded products of soft synthetic resin, and the bag body 50 is a stretchable thin film made of silicone rubber. The upper and lower jaw models 6, 7 are made of soft or hard synthetic resin.

An maxillary plate 3 and a mandibular plate 4 are respectively attached to the inner surfaces of the maxillary support plate 1 and the mandibular support plate 2, which are pivotally connected to each other so as to be openable and closable using a pivot mechanism as will be described later. That is, in FIG. 1, the maxillary plate 3 has screws 17
The mandibular board 4 is removably fixed to the upper jaw support plate 1 by screws 16 whose heads are fixed in the mandibular support plate 4 with nuts 15 through hemispherical washers 18. Fixed.

When the maxillary plate 3 and the mandibular plate 4 are fixed to the upper and lower jaw support plates 1 and 2 as described above, they have arcuate projecting peripheral edges on the left and right sides and the front part on the corresponding inner surfaces 38 and 48, respectively. The portions 31 and 41 are formed to protrude.

The upper jaw model 6 and the lower jaw model 7 have tooth rows 63 and 73 arranged in an arcuate manner on the corresponding inner sides, and the outer surfaces 6
9 and 79 are tooth row transition parts 6 that can be joined to the inner surfaces 38 and 48 of the upper and lower jaw plates 3 and 4, respectively.
Chamfered portions 62 and 72 corresponding to 1 and 71 are formed.

Nuts 131, 141 that open to the outer surfaces are embedded in the upper jaw model 6 and the lower jaw model 7, and bolt holes are made in the upper and lower jaw plates 3, 4 corresponding to the positions of these nuts 131, 141.

The soft silicone rubber bag body 50 has an opening 51 at the front, and one bolt hole is provided around the periphery corresponding to the position of the nuts 131, 141 of the upper and lower jaw models 6, 7. It is something that exists.

When assembling, the upper jaw model 6 and the lower jaw model 7 are inserted into the bag 50 through the opening 51 thereof, and the upper and lower jaw models 6, 7 are inserted into the bag 50 through the opening 51 of the bag 50 and the upper and lower jaw models 6, 7.
It is inserted between the inner surfaces of the maxillary plate 3 and the mandibular plate 4, toward the front side of the occlusal model along with the anterior tooth side. Then, fixing male screws 13 and 14 are inserted from the outer surfaces of the maxillary plate 3 and the mandibular plate 4 through the bolt holes and the bolt holes of the bag body 50, respectively, to the maxillary model 6 and the mandibular model 7.
Screw onto the nuts 131, 141 on the outer surface of the holder and tighten.

Regarding the pivoting mechanism of the upper and lower jaw support plates 1 and 2, in this example, the intercondylar shaft 10 is mounted inside a shaft boss formed on the rear side of the upper jaw support plate 1.
0, a condylar road plate (not shown) is attached so that the sagittal condylar road angle can be adjusted freely, and a condyle road bed is attached to the condyle road bed so that the lateral condylar road angle can be freely adjusted by another condylar road bed mounting member (not shown). Reference numeral 9 denotes a condylar tract frame provided on the rear side of the mandibular support plate 2, and a condyle bulb rod 12 is attached to the upper part of the frame. With this configuration, the condylar bulb (not shown) at the top of the bulbar rod 12 is fitted into the condylar groove (not shown) in the condylar road plate, and the mandibular plate 4
By the open bite movement with respect to the maxillary plate 3, a three-dimensional movement of pivoting movement, lateral movement, and anteroposterior movement is performed in the condyle tract.

In FIGS. 2 and 3, the bag 50 of the occlusal model is
Except for the opening 51, the buccal mucosa 5 surrounds the oral cavity, and above and below the buccal mucosa 5, it can be seen that the outer periphery of the upper and lower jaw plates 3 and 4 forms the jawbone.

(Effects of the invention) As understood from the above explanation, if the model of this invention is used for dental training, it will be possible to take impressions and improve reproducibility. It is possible to practice the production of high-quality prostheses, and learn how to cut teeth with water injection and drain oral fluid using a vacuum syringe.
This will contribute to the education of dental technology.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the entire occlusal model, FIG. 2 is a front perspective view of the same, and FIG. 3 is a perspective view of the same from an obliquely upward direction. Explanation of symbols, 1... Upper jaw support plate, 2... Mandibular support plate, 3... Upper jaw plate, 31... Projected peripheral portion, 4...
... Mandibular plate, 41 ... Protruding peripheral part, 5 ... Buccal mucosa and water receiving member, 50 ... Bag body, 51 ... Opening, 6 ...
...Maxillary model, 61...Maxillary side cheek cheek transition area, 62...
... Chamfered portion, 7... Mandibular model, 71... Mandibular side cheek cheek transition part, 72... Chamfered portion.

Claims (1)

[Claims for Utility Model Registration] 1. A maxillary plate 3 and a mandibular plate 4 having protruding peripheral parts 31, 41 on the inner surfaces 38, 48 on the inside of the maxillary support plate 1 and the mandibular support plate 2, respectively, which are pivotally connected to be openable and closable.
fixing the outer surfaces of the maxillary plates 3 and the inner surfaces 38 of the mandibular plates 4, respectively;
In the space between 48, there is an opening 5 whose outer surface is flush with the inner surfaces 38 and 48 and whose front part corresponds to the lips.
A bag body 50 made of a soft stretchable membrane having
9, an upper jaw model 6 and a lower jaw model 7 having chamfered parts 62, 72 that can be joined to the protruding peripheral parts 31, 41 and reach the cheek-buccal transition parts 61, 71 of the tooth row are enclosed in the bag body 50. , and the outer surfaces 69 and 79 of the maxillary model 6 and the mandibular model 7 are fixed to the inner surfaces 38 and 48 of the maxillary plate 3 and mandibular plate 4 by sandwiching the elastic membrane of the bag body 50, respectively. , An occlusal model for dental training in which the bag body 50 is used as a buccal mucosa and water receiving member 5. 2. The occlusal model for dental training according to claim 1, wherein the soft elastic membrane of the bag body 50 is made of silicone rubber.