WO2020175887A1

WO2020175887A1 - Dental prosthesis manufacturing method, and prosthesis including same

Info

Publication number: WO2020175887A1
Application number: PCT/KR2020/002690
Authority: WO
Inventors: 김동환; 김영준
Original assignee: 김동환; 이마고웍스 주식회사
Priority date: 2019-02-28
Filing date: 2020-02-25
Publication date: 2020-09-03

Abstract

The present invention provides a dental prosthesis manufacturing method comprising the steps of: inserting a fixing block into a container that can be positioned on a milling lathe; insertively positioning, in the fixing block, a tooth fixing member to which an artificial tooth is coupled at one side thereof; injecting a first material into one side of the tooth fixing member and firstly molding same; removing the tooth fixing member from the first material to which the artificial tooth is coupled and molded at the other side thereof; injecting a second material into the other side of the tooth fixing member and secondly molding same; removing the first material; selecting at least one existing model group pre-set and grouped according to the measured oral state of a patient; milling the second material being molded in at least one of the model groups; and milling the occlusal surface of the model according to the oral structure of the patient.

Description

2020/175887 1»（：1/10公020/002690 Specification

Name of the invention: Method of manufacturing dental prosthesis and technical field of prosthesis including the same

[1] The present invention relates to a method for manufacturing a dental prosthesis and a prosthesis including the same. Background

[2] In general, dentures are also called dentures, and are artificial implants in the oral cavity that artificially restore the shape and function of a missing tooth when a natural tooth falls out.

[3] The dentures are installed inside the oral cavity to restore mastication function and prevent deformation of the periodontal tissue, but can be divided into partial and complete dentures according to the number of missing teeth, and fixed and removable according to the fixing method. ,The partial denture is installed using residual tissues such as the surrounding teeth, the alveolar bone between the surrounding teeth, the gums, etc. in the maxilla or the partial edentulous part of the mandible, Can be installed to be completely enclosed.

[4] These dentures are generally made of an artificial tooth (denture) and a resin structure bonded to the artificial tooth. After the resin structure is made of molding 知 101出1¾), the artificial teeth are bonded to the resin structure to make the denture. To be completed.

[5] At this time, in the process of solidifying (solidifying) the resin structure, there are many cases in which polymerized resin is generated and cannot be manufactured into the desired shape. In addition, since artificial teeth are bonded to the resin structure by adhesive, depending on the environment of use. Artificial tooth resin

It often occurs when it deviates from the structure.

[6] In addition, since the conventional denture manufacturing process proceeds in a way that fine-adjusts every tooth individually and corrects the occlusion after obtaining the patient's impression, there was a problem in that the process was slow and inefficient.

Detailed description of the invention

Technical task

[7] The present invention was devised to solve the above technical problems, and this invention is to manufacture dental prosthesis with less problem of dropout because no adhesive is used for bonding of artificial teeth and dentures ((No 111; 1«¾) It aims to provide a method and a prosthesis containing the same.

[8] In addition, the present invention is fundamentally due to the polymerization shrinkage following the solidification process of the resin structure.

It aims to provide a method of manufacturing a dental prosthesis that can be prevented and improved retention and a prosthesis containing the same.

[9] In addition, the present invention aims to provide a method for manufacturing a dental prosthesis that can solve the occlusal problem arising in the manufacturing process of dentures with a milling process and a prosthesis including the same.

[1] In addition, the present invention is a digital milling method for repairing denture bases and immediate dentures. 2020/175887 1»（：1^1{2020/002690

2 It aims to provide a method for manufacturing a dental prosthesis that can be processed and a prosthesis including the same.

[11] In addition, the present invention aims to provide a method of manufacturing a dental prosthesis that can be manufactured by putting a metal phase into the denture so that partial dentures can be manufactured, and a prosthesis including the same.

[12] In addition, the present invention can use safe denture materials approved by medical insurance, etc.

Therefore, it aims to provide a method of manufacturing a dental prosthesis that can reduce manufacturing cost and a prosthesis including the same.

[13] In addition, the present invention scans the patient's tooth condition and then mills the occlusal surface of the tooth after milling to suit each patient using the pre-set prosthesis of the corresponding group, thereby greatly reducing the manufacturing process and It aims to provide customizable dental prosthesis manufacturing methods and prostheses including the same.

Problem solving means

[14] In order to achieve the above task, a method for manufacturing a dental prosthesis according to an embodiment of the present invention,

[15] inserting a fixing block into a container that can be located on a milling processing table;

[16] Step of inserting and positioning a tooth fixing member coupled to one side of the artificial tooth into the fixing block;

[17] Step of first molding by injecting a first material to one side of the tooth fixing member;

[18] step of removing the tooth fixing member from the first material that is molded by being coupled to the other side of the artificial tooth;

[19] a step in which a second material is injected into the other side of the tooth fixing member to form a second mold;

[2] The first material is removed and the second material is milled.

[21]

[22] In addition, a dental prosthesis according to another embodiment of the present invention,

[23] inserting a fixing block into a container that can be located on a milling processing table;

[24] Step of inserting and positioning a tooth fixing member coupled to one side of the artificial tooth into the fixing block;

[25] Step of first molding by injecting a first material to one side of the tooth fixing member;

[26] the step of removing the tooth fixing member from the first material that is molded by being coupled to the other side of the artificial tooth;

[27] a step of second molding by injecting a second material to the other side of the tooth fixing member;

[28] the step of removing the first material;

[29] selecting at least one ready-made model group grouped according to the measured oral condition of the patient;

[3] A step of milling a second material molded in at least one of the model groups; And [31] A method for manufacturing a dental prosthesis including; milling the occlusal surface of the model according to the oral structure of the patient.

[32]

In one embodiment of the present invention, the process of selecting the model group may further include selecting a model matching the oral structure of the patient among the selected model groups.

[34] In an embodiment of the present invention, the process of milling the occlusal surface of the model may mill at least one of the maxillary and mandible.

[35] In one embodiment of the present invention, the process of milling the occlusal surface of the model

It can be performed on at least 3 to 5 teeth of the posterior region.

[36] In one embodiment of the present invention, in the model group, 3 to 5 models are

Can be included in groups.

[37] In one embodiment of the present invention, the first material may be gypsum and the second material may include dental resin.

In one embodiment of the present invention, before the process of milling the second material, taking an image of a tooth raise for determining or correcting a tooth position and processing an image; may be further included.

[39] On the other hand, the present invention is a dental prosthesis manufactured by the above-described method for manufacturing a dental prosthesis.

Prosthesis can be provided.

Effects of the Invention

[4] The method of manufacturing a dental prosthesis according to the present invention and work of the prosthesis including the same

According to the embodiment, various effects can be achieved, such as:

[41] First, the present invention can provide the effect of fundamentally preventing the problem of dropout because no adhesive is used for bonding the artificial teeth and the denture base.

[42] Second, the present invention can fundamentally prevent the solidification of the resin structure and the resulting polymerization, and can provide the effect of improving the holding power.

[43] Third, the present invention takes the occlusal problem arising from the manufacturing process of dentures as a milling process.

It can provide an effect that can be solved.

[44] Fourth, the present invention can provide the effect of processing the denture base, that is, the repair of dentures (cutting, reshaping) with a digital milling method.

[45] Fifth, the present invention can provide an effect that can be manufactured by putting a metal phase on the denture so that partial dentures can be manufactured.

[46] Sixth, the present invention can provide the effect of reducing manufacturing costs because it can use safe denture materials that are approved by medical insurance, etc.

[47] Seventh, the present invention scans the patient's tooth condition and then mills the occlusal surface of the tooth after milling to suit each patient using ready-made prostheses of the corresponding group. The manufacturing process is greatly reduced and Customizable 2020/175887 1»（：1^1{2020/002690

4 can provide effects.

Brief description of the drawing

1 is a flow chart showing the manufacturing process of a dental prosthesis according to an embodiment of the present invention,

2 to 3 are perspective views of a tooth fixing member and a mandible designed with software according to an embodiment of the present invention,

[5] Fig. 4 is a perspective view showing a state in which a tooth fixing member and a mandible are combined according to an embodiment of the present invention,

[51] Figure 5 is a plan view of the completed tooth fixing member with artificial teeth according to an embodiment of the present invention,

[52] Figures 6 to 7 are processed tooth fixing material according to an embodiment of the present invention

These are drawings in which artificial teeth are combined,

8 is a fixed block is inserted into the container according to an embodiment of the present invention,

These are drawings in which tooth fixing materials are combined with artificial teeth in a fixed block.

9 is a plan view showing a state in which gypsum is molded on an artificial tooth part of a tooth fixing material according to an embodiment of the present invention,

[55] Fig. 9 is a plan view showing the state in which gypsum has been removed,

11 is a plan view showing a state in which a dental resin is molded according to an embodiment of the present invention,

12 is a diagram showing a state in which a fixing block is inserted into a milling container according to an embodiment of the present invention,

13 is a diagram showing a state in which a fixing block is inserted and milled in a container according to an embodiment of the present invention,

14 is an exploded perspective view of each configuration of a fixing block according to an embodiment of the present invention,

[6] Fig. 15 is a plan view showing a state in which a dental resin is molded according to another embodiment of the present invention,

16 to 18 are drawings showing the maxillary and mandibles in which the milling process was performed and completed according to another embodiment of the present invention,

19 is a state diagram showing a state in which a milling process is performed on the joint surface of the maxilla and mandible according to another embodiment of the present invention,

20 is a flowchart showing a manufacturing process of a dental prosthesis according to another embodiment of the present invention.

Modes for the implementation of the invention

[64] Hereinafter, an embodiment according to the present invention is described in detail with reference to the attached drawings.

In adding reference numerals to elements of each drawing, it should be noted that the same elements are to have the same symbols as possible even if they are displayed on different drawings. In addition, implementation of the present invention example 2020/175887 1» (: 1^1{2020/002690) In the description, if it is judged that a detailed description of the related notice configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description will be omitted.

[65] In describing the constituent elements of the embodiment of the present invention, terms such as first, second, person 3, ⑶,) may be used. These terms are used to distinguish the constituent elements from other constituent elements. In addition, the nature, order, or order of the components is not limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, are common in the technical field to which the present invention belongs. It has the same meaning as what is generally understood by a willing person. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning of the context of the relevant technology, and this application It should not be interpreted in an ideal or overly formal sense unless explicitly defined in.

[66]

1 is a diagram showing a manufacturing process of a dental prosthesis according to an embodiment of the present invention.

2 to 3 are perspective views of a tooth fixing member and a mandible designed with software according to an embodiment of the present invention, and FIG. 4 is a diagram showing a state in which the tooth fixing member and the mandible according to an embodiment of the present invention are combined. Is a perspective view, and Figure 5 is a tooth fixing member combined with an artificial tooth according to an embodiment of the present invention is completed

A plan view, FIGS. 6 to 7 are processed teeth according to an embodiment of the present invention.

These are drawings of the state in which the fixing member and the artificial tooth are combined.

Figure 9 is a drawing in which a fixing block is inserted into a container according to an embodiment, and a tooth fixing member in which an artificial tooth is combined with the fixing block is combined, and FIG. 9 is a gypsum molding on an artificial tooth part of a tooth fixing member according to an embodiment of the present invention. Fig. 9 is a plan view showing a state in which gypsum has been removed, and Fig. 11 is a plan view showing a state in which a dental resin according to an embodiment of the present invention is molded, and Fig. 12 is an aspect of the present invention. Fig. 13 is a drawing showing a state in which a fixing block is inserted into a milling container according to an embodiment, and Fig. 13 is a drawing showing a state in which a fixing block is inserted into a container according to an embodiment of the present invention and milled, and Fig. 14 is an embodiment of the present invention. It is an exploded perspective view of each configuration of the fixed block according to the embodiment.

[68] Referring to these drawings, the method of manufacturing a dental prosthesis according to the present invention is shown in FIG.

As shown, the step of inserting the fixing block 100 into the container 1 that can be located on the milling processing table (not shown) (別 00), the tooth fixing member 10 with the artificial tooth 50 coupled to one side Step 200 to be inserted into the temporary fixing block 100), teeth

Tooth from the first material on one side of the fixing member 10 (3/4 is injected and first molded step 300), the artificial tooth 50 is bonded to the other side and molded from the first material

Step 400 in which the fixing member 10 is removed, Step 500 in which the second material 2) is injected and molded on the other side of the tooth fixing member 10), and the first material is removed 2020/175887 1»（：1^1{2020/002690

6 It may include steps 600 and 3700 in which the second material is milled.

[69] First, a container (1) that can be placed on a milling bench (not shown) can be prepared. The container 1 may have a space in which the fixing block 100, which will be described later, can be inserted, and at least two coupling portions 121 that can be coupled on the container 1 may be formed on the outer side.

The fixing block 100 may include a first fastening member 110, a second fastening member 120, and a third fastening member 130. The second fastening member 120 includes a plurality of coupling portions 121 described above. Therefore, the artificial teeth 50 can be stably coupled and fixed to the container 1 in a state in which the formed tooth fixing member 10 is bonded.

1] The artificial tooth 50 is a tooth fixing member 10 coupled to one side may be inserted into the fixing block 100 200). Here, after the fixing block 100 is inserted into the container 1, the tooth is located. The fixing member (10) may be inserted into the fixing block (100), and the tooth

After the fixing member (10) is inserted into the fixing block (100), the tooth is placed in the container (1).

The fixing block 100 to which the fixing member 10 is coupled can be inserted. The internal space of the fixing block 100 and the external shape of the tooth fixing member 10 are prepared to match, but including one or more asymmetric shapes. On the other hand, it can be a mutual fit ().

The artificial tooth 50 can be designed on a computer by scanning the patient's tooth condition, and the artificial tooth 50 can be adhesively bonded to the tooth fixing material 10 by wax, etc. Furthermore, the artificial tooth 50 An artificial tooth cover (not shown) may be provided to cover the artificial tooth on the opposite side combined with the material (10).

2] In this container (1), the fixing block (100) can be inserted (00).

An artificial tooth 50 can be coupled to the fixing block 100. The fixing block 1 can be mediated so that the tooth fixing member 10 can be fixedly positioned in a container (1) that can be different for each milling machine. The fixing block 100 may have a space in which the tooth fixing member 10 can be inserted, and it is to prevent separation from the fixed position by the rotational power of the drill during the milling process of the milling machine.

It may include a locking (1 ₁ ¾) structure. This locking structure may include a protrusion (not shown) on one of the fixing blocks (100) and the container (1), and a recess (not shown) on the other. In this case, the fixing block 100 can be locked to the container 1 by the protrusion being caught in the concave groove. The structure to be joined by the locking structure is not particularly limited, for example, bolts/concave grooves, locking protrusions/ Of course, it can include various structures such as locking grooves and hook/hook locking parts.

3] Next, the tooth fixing member (10) is formed on the fixing block (100)

The first material (3/4 can be injected and molded 300) on the upper side of the artificial tooth 50, that is, the occlusal surface. According to the present invention, the first material is to be positioned so that the artificial tooth 50 does not flow. As provided, it may preferably be gypsum.

[74] Teeth from the first material molded in the area where the artificial tooth 50 was formed afterwards)

The fixing member 10 can be removed 400). 2020/175887 1»（：1/10公020/002690

7 Then, the tooth fixing member 10 is formed on the fixing block 100

The second material 2) can be injected into the lower side of the artificial tooth 50 to be molded 500). According to the present invention, the second material 2) may preferably be a biocompatible polymer, for example, a dental resin ().

[76] Then, the first material molded on the area where the artificial tooth 50 is formed (the process of removing the ¾ is performed 600), the second material 2) can be milled 700). At this time, the second material 2) The milling process of can be milled to precisely match the gum shape of the patient's teeth determined through the computer image scanning process described above.

In this way, since the second material 2) determines the shape of the denture base by milling after polymerization is completed, the shape change due to polymerization can be fundamentally prevented.

In addition, in order to prevent the second material 2) or the artificial tooth 50 from being displaced during the milling process, image capture and image processing are performed before milling and are compared with the artificial tooth design data to determine the position dislocation and/or correct the position. Can be done.

[78]

On the other hand, if necessary, the present invention can provide a method of repairing a dental prosthesis. Specifically, prepare a container (1) that can be placed on the milling processing table,

The fixing block 100 can be inserted into the container 1. The tooth fixing member 10 to which the denture to be repaired is inserted is inserted into the fixing block 100, and the first material is placed on one side of the fixing block 100. (3/4 can be injected and molded. The first material (the tooth fixing member 10 is removed from the ¾ and the second material 2) is injected and molded by combining the dentures to be repaired. The first material) may be removed from the second material 2) molded by combining the target dentures, and the second material may be milled. The method for repairing dentures according to an embodiment of the present invention uses a denture to be repaired instead of an artificial tooth. Perform the method on the target, where, if partial repair of the denture to be repaired is necessary,

7 7 879 ⁷⁵ 1 A compartment structure (e.g., a compartment plate) may be positioned so that the second material 2) can be placed only in the parts that need repair before molding the second material 2). If this is necessary, the second material 2) can also be molded after placing the reinforcement body (eg metal body).

[80]

[81] Figure 15 is a plan view showing a state in which a dental resin is molded according to another embodiment of the present invention, and Figures 16 to 18 are the upper and lower denture teeth in which the milling process is performed and completed according to another embodiment of the present invention. 19 is a state diagram showing a state in which a milling process is performed on the junction surface of the maxilla and mandible according to another embodiment of the present invention, and FIG. 20 is a diagram showing a manufacturing process of a dental prosthesis according to another embodiment of the present invention. It is a flow chart.

First, referring to FIG. 20, the step of inserting the fixing block 100 into a container 1 that can be located on a milling processing table (not shown) (別 00), a tooth fixing member having an artificial tooth 50 coupled to one side (10) Step 200 to be inserted into the temporary fixing block 100), teeth 2020/175887 1»（：1^1{2020/002690

8 Tooth from the first material (3/4 is injected and first molded step 300) on one side of the fixing member 10, the artificial tooth 50 is bonded to the other side and molded from the first material)

Step 400 in which the fixing member 10 is removed), Step 500 in which the second material 2) is injected and second molded on the other side of the tooth fixing member 10), Step 600 in which the first material is removed), Patients subject to treatment Step of scanning and measuring the oral structure of the patient (600-1), the step of selecting a model group corresponding to the oral structure of the patient among a plurality of preset groups (Bright, Pyeong) 600-2), the second material 2) Milling It may include step 700) and step 700-1) of milling the occlusal surface of the model according to the oral structure of the patient. Here, according to the present invention, a model group corresponding to the oral structure of the patient is selected. The step 600-2) may further include a step 600-3) of finally selecting a model matching the oral structure of the patient among the group model.

First, the method of manufacturing a dental prosthesis according to the present embodiment is basically the same as the previous embodiment except that some processes are added before and after the second material 2) is milled.

[84] That is, a container (1) that can be placed on a milling bench (not shown) can be prepared. The container 1 may have a space in which the fixing block 100, which will be described later, can be inserted, and at least two coupling portions 121 that can be coupled on the container 1 may be formed on the outer side.

[85] The artificial tooth 50 may be inserted into the fixing block 100 by the tooth fixing member 10 coupled to one side 200). Here, after the fixing block 100 is inserted into the container (1) The tooth fixing member (10) may be inserted into the fixing block (100), or the tooth fixing member (10) is inserted into the fixing block (100), and then the tooth is placed in the container (1).

[86] In this container (1), the fixing block (100) can be inserted (00).

It may include a locking (1 ₁ ¾) structure. This locking structure may include a protrusion (not shown) on one of the fixing blocks (100) and the container (1), and a recess (not shown) on the other. In this case, as the upper protrusion is caught in the upper groove, 2020/175887 1»（：1^1{2020/002690 The fixing block 100 can be locked to the container 1. The structure that is joined by the locking structure is not particularly limited, for example bolts/grooves, stumbling stones It is of course possible to include various structures such as machine/concave groove, hook/hook catching part.

[87] Next, the tooth fixing member (10) is formed on the fixing block (100).

[88] Teeth from the first material molded in the area where the artificial tooth 50 was formed afterwards)

The fixing member 10 can be removed 400).

[89] Subsequently, the tooth fixing member (10) is formed on the fixing block (100).

The second material 2) can be injected into the lower side of the artificial tooth 50 to be molded 500). According to the present invention, the second material 2) may preferably be a biocompatible polymer, for example, a dental resin (), which is not shown in the drawings presented by the present invention, but in some cases artificial At least one second material 2) injected into the lower side of the tooth 50 may be formed on the tooth area with a recognition part (not shown) capable of determining the position of the tooth. Therefore, in order to mill the second material 2), When placing it in the container (1) of the milling processing table, it is possible to correct the position error before milling by scanning or probing through the above recognition part, for example, the inserted scan body (13 _{0 (} 1 ₎ 0 ₎ .

[9] Then, the first material molded on the area where the artificial tooth 50 is formed (the process of removing the ¾ can be performed 600), where the patient's globular state can be individually measured and stored in a gas can, and 600- 1) Accordingly, a model group that can include the patient's oral structure can be selected from among a plurality of previously set groups (bright) 600-2) At this time, the patient's oral state gas cans are measured and stored in step 600-1) Must

Pre-scan measurement and storage before step 700 in which the first material molded in the area where the artificial tooth 50 is formed (not that it can be performed after the process of removing ¾, but the second material 2 described above) is performed It can also be recorded, preferably before or after step (別00) or step 200).

This is to ensure that the artificial teeth (50) that are most similar to the patient's oral structure can be selected before the artificial teeth (50) are bonded to the teeth fixing material (50) and mounted on the fixing block (100).

[91] Among the model groups selected next, the model that is most suitable for the patient's oral structure may be finally selected 600-3). That is, the selected model group is selected based on the predetermined data by scanning the patient's oral cavity. After that, the model having the most similar structure to the patient's oral structure can be finally selected from the group of additionally selected models. Such a model may already be a ready-made product in which the second material 2) is injected and molded.

[92] After that, the second material 2) of the last selected model described above can be milled 700). 2020/175887 1»（：1^1{2020/002690

10 The milling process of the second material 2) can be milled to accurately match the shape of the gums of the patient's teeth determined through the computer image scanning process described above.

[93] In this way, after the second material 2) weight polymerization is completed, the denture base is

Since the shape is determined, it is possible to fundamentally block the shape change due to polymerization.

[94] Finally, as shown in Fig. 19, the milling process of the patient's occlusal surface proceeds 700-1). According to the present invention, preferably, such a milling process centers on the posterior teeth of the mandible. It can be performed, and more preferably, at least three of the molars and premolar teeth of the lower mandible can be configured to be milled, i.e., when the patient chews food, the upper and lower and left and right joints of the lower jaw are approximately fixed and fixed. Due to the movement, friction of the occlusal surface of the maxilla and mandible may be formed, and since the greatest friction occurs in the posterior teeth of the mandible, it is desirable to mill the mandibular molar. However, in some cases, the milling process for the maxilla Of course, it could be done additionally.

[95] Here, in the process of milling the occlusal surface 700-1), the process of milling the occlusal surface of the mandibular molar can be accurately performed without error according to the computer image and data stored by scanning and measuring the oral condition of individual patients.

[96]

[97] Above, an embodiment according to the present invention is described in detail with reference to the attached drawings.

However, the embodiments of the present invention are not necessarily limited by the one embodiment described above, and it is natural that various modifications and implementations within an equal range are possible by a person having ordinary knowledge in the technical field to which the present invention belongs. something to do. Therefore, the true scope of the rights of the present invention is subject to the scope of the claims set forth below.

I would say it was decided.

Claims

2020/175887 1»（：1^1{2020/002690 11 Claims

[Claim 1] Step of inserting a fixed block into a container that can be located on the milling processing table;

Step of inserting and positioning a tooth fixing member coupled to one side of the artificial tooth into the fixing block;

A step of first molding by injecting a first material to one side of the tooth fixing member; Removing the tooth fixing member from the first material molded by being coupled to the other side of the artificial tooth;

A step in which a second material is injected into the other side of the tooth fixing member to form a second mold; A method of manufacturing a dental prosthesis including a step of removing the first material and milling the second material.

[Claim 2] Step of inserting a fixed block into a container that can be located on the milling processing table;

A step in which a second material is injected into the other side of the tooth fixing member to form a second mold; Removing the first material;

Selecting at least one group of ready-made models grouped according to the measured oral condition of the patient;

Milling a second material molded in at least one of the model groups; And

Milling the occlusal surface of the model according to the oral structure of the patient; a dental prosthesis manufacturing method comprising.

[Claim 3] In paragraph 2,

The process of selecting the model group comprises: selecting a model that matches the oral structure of the patient among the selected model groups.

[Claim 4] In paragraph 2,

The process of milling the occlusal surface of the model is a method of manufacturing a dental prosthesis for milling at least one of the maxillary and mandible.

[Claim 5] In paragraph 2,

The process of milling the occlusal surface of the model is a method for manufacturing a dental prosthesis that is performed on at least 3 to 5 teeth of the mandible.

[Claim 6] According to item 1 or 2,

The above model group is a method of manufacturing a dental prosthesis in which 3 to 5 models are included in one group. 2020/175887 1»（：1^1{2020/002690

12

[Claim 7] The method of paragraph 1 or 2,

The first material is gypsum, and the second material is a method of manufacturing a dental prosthesis containing 0) dental resin.

[Claim 8] The method of paragraph 1 or 2,

Before the process of milling the second material, taking an image of a tooth impression and processing an image for determining or correcting the position of the tooth; a method for manufacturing a dental prosthesis further comprising a guard.

[Claim 9] A dental prosthesis manufactured by the manufacturing method in accordance with paragraph 1 or 2.