KR20230065412A - Milk tooth crown made of PEEK material - Google Patents

Abstract

The present invention relates to a method for manufacturing a primary crown, and is particularly configured to increase the production of primary crowns made of PEEK material through an injection device and to improve aesthetics and durability of primary crowns according to the peak material.
In order to achieve the above object, a method for manufacturing a primary crown according to the present invention includes the steps of designing an injection design of a primary crown based on a standard shape of a primary crown, manufacturing a mold according to the injection design, and manufacturing a primary crown using the mold. It is a technical feature that includes the manufacturing step.

Description

Milk tooth crown made of PEEK material}

The present invention relates to an indwelling crown, and more particularly, to an indwelling crown that can be mass-produced and can improve aesthetics and durability by manufacturing a PEEK material through an injection device.

In general, single tooth prosthetic restoration refers to a procedure for restoring a tooth severely damaged by dental caries or trauma with a crown.

For crowns used for prosthetic restoration, patient customized crowns, which directly manufacture and provide crowns suitable for individual patients, are common. ) may be performed.

Customized crowns are manufactured through a complicated manufacturing process in a laboratory or dentistry. During manufacturing, repairs or defects are accompanied, resulting in a longer manufacturing process, which lengthens the clinical process at the same time and requires additional manufacturing processes, resulting in excessive manufacturing and medical costs. There are disadvantages that arise. In particular, since it is manufactured as a customized crown, it takes a long time to manufacture, so it is difficult to immediately perform prosthetic restoration treatment on the patient.

On the other hand, ready-made crowns standardize the shape of teeth different for each person as an average value in order to replace the custom-made method through a laboratory, and pre-manufacture several crowns by size to be applied to them. If the ready-made crown prepared in advance is directly provided to the dentist, the dentist selects a model closest to the patient's teeth from among the ready-made crowns, and processes only the local portion with a handpiece grinder so that the patient can be treated immediately.

However, in the past, ready-made crowns were mainly imported from foreign countries, so they often did not fit the size of Korean teeth. There was a problem that it took a lot of work time and unnecessarily increased material costs.

In addition, the materials of conventional customized crowns and ready-made crowns are made of metal or zirconia. In the case of metal, it has good workability, but it is highly resistant to color depending on the color, so it is generally made as a crown for the teeth inside the teeth, that is, molars.

Republic of Korea Patent Publication No. 10-2021-0062840 (published on June 1, 2021) Republic of Korea Patent Publication No. 10-2021-0044597 (published on April 23, 2021) Republic of Korea Patent Registration No. 10-2286271 (Public date: August 05, 2021)

The present invention was invented to solve the problems of the prior art as described above, and is manufactured using a PEEK material capable of improving aesthetics and durability, enabling mass production and improving aesthetics and durability. ) material, the purpose of which is to provide an indwelling crown.

In order to achieve the above object, the present invention is an infant crown that is overlaid on and fixed to the etched primary teeth of a patient, and has the outer appearance of the primary teeth according to a predefined standard shape, but the inside of the lower part is matched with the etched primary teeth. By forming a concave groove, it is configured to cover and fix the patient's etched teeth.

In addition, according to a preferred embodiment of the present invention, the infant crown includes the steps of designing injection of the primary crown based on the standard shape of primary infant, manufacturing a mold according to the injection design, and manufacturing the primary crown using the mold. It is manufactured by a method for manufacturing an indwelling crown comprising the steps of:

In addition, according to a preferred embodiment of the present invention, the mold includes an upper mold and a lower mold, and the cavity formed by closing the molds has a standard shape for attracting.

In addition, according to a preferred embodiment of the present invention, the primary crown may be made of a PEEK material, and the standard shape includes maxillary primary molars, maxillary secondary molars, mandibular primary molars, mandibular secondary molars, central incisors, and lateral incisors, respectively.

As described above, the method for manufacturing a primary crown according to the present invention designs each primary primary standard corresponding to various types of primary primary teeth and manufactures an primary primary crown made of PEEK material according to the designed primary primary standards so that it can be operated. , it has the advantage of excellent aesthetics and durability.

In addition, by designing the implant standard and manufacturing it accordingly, it is possible to significantly reduce the subsequent processing process during the procedure, minimizing the time and manpower consumption of the procedure. That is, in the past, there were many cases in which primary crowns were imported and used. In this case, the crowns were not shaped according to the standard Korean primary teeth, but were larger than that. Since it is necessary to cut and remove the crown, it takes a long time for the procedure and increases the cost of the material (deciduous crown). However, according to the present invention, since the primary tooth crown is manufactured according to the standard Korean primary tooth shape, there is a small amount to be cut or removed during the patient's procedure, and therefore, there is an advantage in that the procedure time and material cost can be saved.

In addition, the manufacturing method of the primary primary crown according to the present invention is configured to enable mass production through an injection device in manufacturing the primary primary crown of the peak material, so that the primary primary crown manufactured to the primary primary standard can be provided inexpensively.

1 is a perspective view showing a primary crown according to an embodiment of the present invention;
2 is a conceptual diagram showing a state in which primary crowns are operated on primary molars;
3 is an explanatory view showing teeth in the oral cavity for explaining primary teeth;
4 is a conceptual diagram showing an injection process for manufacturing an indwelling crown of a peak material according to the present invention;
5 is a block diagram showing a method for manufacturing a primary crown of a peak material according to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a method for manufacturing an indwelling crown of a peak material according to the present invention will be described in detail.

In the drawings, FIG. 1 is a perspective view showing a primary crown according to an embodiment of the present invention, FIG. 2 is a conceptual diagram showing a state in which a primary molar is treated with a primary molar, and FIG. 3 is a description showing teeth in the oral cavity for explaining primary teeth. It is also And Figure 4 is a conceptual diagram showing an injection process for manufacturing a primary crown of the peak material according to the present invention, Figure 5 is a block diagram showing a manufacturing method of the primary crown of the peak material according to the present invention.

In general, the primary teeth in childhood are called 'deciduous teeth', and the secondary teeth after the primary teeth fall out are called 'permanent teeth'.

The purpose of the primary tooth crown procedure is to make the primary tooth usable as long as possible by protecting the primary tooth by treating the primary tooth that has been eroded or damaged by germs with a primary tooth crown during childhood or adolescence.

The present invention also has a technical idea in manufacturing an indwelling crown to protect a primary deciduous tooth by injection molding so as to mass-produce a deciduous crown made of a peak material that is lightweight and has excellent durability.

As shown in FIG. 3, baby teeth are also called milk teeth or deciduous teeth, and generally consist of a total of 20 teeth.

Looking at the name of each primary tooth, from the front to the back in the same way as the upper and lower jaws, central incisor (a), lateral incisor (b), lateral canine (c), first primary molar (d), and second primary molar (e) ), and the upper and lower jaws are formed symmetrically.

Among the deciduous teeth configured as described above, when the deciduous teeth are damaged or eroded by germs, as shown in FIG. 2, the primary deciduous teeth 15 are first etched for the procedure, and the primary deciduous crowns 10 are applied to protect a part of the remaining primary deciduous teeth. cover to protect baby teeth

The deciduous crown to protect the deciduous teeth has a structure similar to the shape of the corresponding teeth, that is, the central incisor (a), the lateral incisor (b), the canine (c), the first primary molar (d), and the second primary molar (e). .

The primary crown 10 shown in FIG. 1 is a primary molar crown and has a shape similar to that of the first primary molar (d) or the second primary molar (e), and primary primary crowns corresponding to other primary molars also correspond to the primary primary molar. It will be understood that it will have the same or similar shape to the original form of.

The outer appearance of the primary tooth crown 10 has the shape of an original tooth, and the inside has a concave groove 13 formed to match the etched primary tooth, and the etched primary tooth 15 remaining on the gum as shown in FIG. Cover and fix the indwelling crown (10).

On the other hand, in the present invention, as a method of manufacturing such a child crown, as shown in FIG. 4, the injection design of the child crown 10 is performed based on the standard shape of the child tooth, and molds 21H and 21L are formed according to the injection design. to produce

Then, the peak material melted by the injection device 30 is injected into the cavity 23 of the molds 21H and 21L, and the molds 21H and 21L are cooled to manufacture the crown 10 of the peak material, and then the mold The primary crown 10 manufactured by opening the molds 21H and 21L is extracted, and the extracted primary crown 10 is subjected to surface treatment.

Hereinafter, a method for manufacturing an indwelling crown of a peak material according to the present invention configured as described above will be described in detail with reference to FIG. 5 .

In injection designing the child crown 10, standard child teeth are set and injection design is performed according to the set shape of the standard child teeth (S10).

Information on the size of primary teeth is exemplarily described in [Table 1] and [Table 2] below, and standard primary teeth can be set and designed based on [Table 1] and [Table 2].

Below, [Table 1] summarizes the standard primary deciduous shapes for molars (primary molars), and [Table 2] summarizes the standard primary deciduous shapes for primary incisors (incisors).

[Table 1]

In Table 1, UD: maxillary primary molars, UE: maxillary secondary molars, LD: mandibular primary molars, LE: mandibular secondary molars, MD: mesiodistal width, BL: buccolingual width ), C-MD: cervical mesiodistal width, C-BL: cervical buccolingual width.

[Table 2]

As described above, in a preferred embodiment of the present invention, a standard primary tooth shape of Koreans is investigated in advance, and the primary child crown 10 is manufactured according to the standard primary tooth shape. However, the [Table 1] and [Table 2] are exemplary, and according to a specific embodiment of the present invention, a standard primary child shape different from the dimensions of [Table 1] and [Table 2] may be used. In addition, although the table above shows only the standard shapes for incisors (central incisors) and molars (primary molars), it is of course possible to prepare the above standard shapes for other teeth, such as lateral incisors and canines, in advance and manufacture primary crowns accordingly. .

When the injection design is completed by setting the standard child seat, as shown in FIG. 21L) is produced (S20).

Then, the closed molds 21H and 21L are placed in the nozzle 31 of the injection device 30, the cylinder 33 is heated, and then the pellets 40 of the peak material are placed in the hopper 35 of the injection device 30 put in And, when the screw 37 in the cylinder 33 is rotated, the pellet 40 moves toward the nozzle 31 of the cylinder 33 while being melted by the heat of the cylinder 33 through the nozzle 31 to the mold 21H. , 21L) is injected into the cavity 23 (S30).

When the melted peak material is filled in the mold cavity 23, the molds 21H and 21L are cooled (S40) to solidify the peak material, and then the upper mold 21H and the lower mold 21L are opened to mold the molds 21H and 21L ) The extraction crown 10 of the peak material solidified from the inside is taken out (S50). Thereafter, surface treatment such as removal of burrs or foreign substances may be performed on the surface of the child crown 10 as needed.

In an alternative embodiment, an additional surface treatment may be further performed on the extracted primary crown 10 (S60). In a preferred embodiment, the surface treatment (S60) is to plasma treat the surface of the primary crown (10).

As an example, the surface treatment of the child crown 10 may be performed according to the room temperature atmospheric pressure plasma treatment method, and at this time, the surface treatment may be performed under the conditions shown in Table 3 below.

[Table 3] Parameters of atmospheric plasma generator

As shown in Table 3, Ar (99.999%) is used as a gas for generating plasma, and the gas is injected into a room temperature atmospheric pressure plasma device at a flow rate of 10 L/min to generate plasma using 10 W of electrical energy. let it During plasma treatment, the flame was maintained at about 5 mm from the specimen, and each crown was treated for 30 minutes.

As described above, when the plasma surface treatment is performed on the primary crown 10, the durability of the surface of the primary crown 10 is improved and the surface has antibacterial properties, so it has an advantage that it can be used with a longer lifespan compared to the prior art. .

10 : primary crown
13: home
15: etched baby teeth
21, 21H, 21L: mold
23: Cavity
30: injection device
31: nozzle
33: screw
35: Hopper
37: screw
40: Pellets of peak material

Claims (5)

As a child crown that is overlaid and fixed to the patient's etched baby teeth,
Characterized in that it has the outer shape of the baby teeth according to a predefined standard shape, but is configured to cover and fix the patient's etched baby teeth by forming a concave groove 13 on the inside of the lower part so as to match the etched baby teeth. The method of claim 1, wherein the primary crown,
Injection designing of a primary crown based on a primary primary shape;
Manufacturing a mold according to the injection design;
A child crown, characterized in that manufactured by a method for manufacturing a child crown comprising the step of manufacturing a child crown using a mold. According to claim 2,
The mold includes an upper mold and a lower mold, and a cavity formed by closing the molds has a standard shape of a child crown. According to any one of claims 1 to 3,
A primary crown, characterized in that the primary crown is made of a PEEK material. According to claim 4,
Wherein the standard shape is individually defined for maxillary primary molars, maxillary secondary molars, mandibular primary molars, mandibular secondary molars, central incisors, and lateral incisors.

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