TWI789006B - Diseased tooth prosthesis and method for making same with surrounding tooth base - Google Patents

Abstract

A diseased tooth prosthesis is made by 3D printing and includes a tooth root body and a tooth crown body. A hollow pulp cavity is formed inside the tooth root body and a crown core and a tooth root are connected. The crown is wrapped around the core of the crown, the crown is made by curing a first printing material, the root is at least made by curing a second printing material, and the crown is made of The hardness is greater than the hardness of the root body; with the structure of 3D printing, the structure of each diseased tooth prosthesis has a different curve, which can simulate the teeth of different patients, which is equivalent to filling the pulp cavity to simulate the root canal During treatment, the soft and hard textures of the crown and the root and the non-repetitive shape of the pulp cavity can be close to the actual condition of the patient's teeth and improve the teaching effect.

Description

Diseased tooth prosthesis and method for making the same

The present invention is related to the teaching aid of the department of dentistry; in particular, it refers to a prosthesis for a diseased tooth and a method for making the prosthesis and its surrounding tooth base.

Root canal therapy (endodontic therapy) in the field of dental medicine is to expand the crown of the tooth, and then use a small instrument to insert it into the pulp cavity along the opened opening to completely debride the infected pulp tissue and at the same time remove the When the space of the medullary cavity is appropriately expanded and shaped to facilitate root canal sealing, the root canal filling material can be put in smoothly.

When dental medical students or interns practice root canal treatment, they will use standard tooth model teaching aids to be placed on a platform or simple jigs for practice. Dental medical students or interns use this method to simulate the structure of the tooth and the pulp cavity, and conduct training such as pulp cleaning, enlargement, and shaping to simulate root canal treatment.

However, since each patient's tooth and pulp cavity have different shapes, the pulp cavity of the tooth model of the prior art is only a single curved structure, which cannot simulate the various shapes of teeth and pulp of different patients, nor can it The teaching effect of simulating the influence of surrounding teeth on actual root canal treatment is still insufficient, and there is a need for improvement.

In view of this, the object of the present invention is to provide a diseased tooth prosthesis printed by 3D medical imaging technology, and a method for manufacturing the diseased tooth prosthesis and its surrounding tooth sockets. The diseased dental prosthesis is printed with two or more printing materials, and the peripheral tooth base has a root cavity for positioning the diseased dental prosthesis to simulate the actual appearance of the patient's oral cavity including gums and teeth Shape, to achieve the effect of improving the teaching effect of root canal treatment when used.

In order to achieve the above purpose, the present invention provides a diseased tooth prosthesis, which is made by 3D printing and includes a tooth root body and a tooth crown body; the tooth root body includes a tooth crown core and a tooth root that are connected, and There is a hollow pulp chamber inside; the crown is wrapped around the core of the crown, and the root is exposed outside the crown; wherein, the crown is cured with a first printing material The tooth root body is made by curing at least one second printing material, and the hardness of the tooth crown body is greater than that of the tooth root body.

In order to achieve the above object, the present invention provides a method for manufacturing a diseased tooth prosthesis, the steps of which include: using 3D medical imaging technology to obtain a structural image of the diseased tooth; using the structural image to model a diseased tooth to obtain printing parameters; using The 3D printer prints a diseased tooth prosthesis as described in claim 1 with the printing parameters of the diseased tooth. The diseased tooth prosthesis includes a tooth root and a crown covering the tooth root. There is a pulp cavity in the root of the tooth; when the 3D printer prints the prosthesis of the diseased tooth, it prints with two or more printing materials, and prints the crown with a first printing material, at least A second printing material prints the tooth root body; the hardness of the cured tooth crown body is greater than that of the cured tooth root body.

In order to achieve the above object, the present invention provides a method for manufacturing a dental socket around a diseased tooth prosthesis, the steps of which include: using 3D medical imaging technology to obtain a structural image of the diseased tooth and its surrounding teeth and gums; using the structural image to model Obtain a peripheral tooth printing parameter, the peripheral tooth printing parameter includes the gum, the root cavity of the diseased tooth located on the gum bed, and the printing parameters of at least one tooth on each side of the diseased tooth; using 3D printing The machine prints with the peripheral tooth Parametric printing of a peripheral dental mount; when the 3D printer prints the peripheral dental mount, it is printed with more than one printing material, and the printed peripheral dental mount includes a gum and a tooth located on both sides of the diseased tooth. For each at least one tooth, the gum bed has a root cavity of a diseased tooth, in which the diseased tooth prosthesis according to any one of Claims 1 to 4 can be set.

The present invention uses medical radiography and different printing materials to produce diseased prostheses with different curve structures, and provides surrounding dental sockets to simulate the environment in which the diseased prostheses are located. The effects of teaching use are as follows:

1. It can actually simulate the structure of the pulp cavity of different patients' diseased teeth, which is close to the situation of the pulp cavity of patients in reality, so it can improve the teaching effect.

2. The diseased tooth prosthesis printed with two or more printing materials can obtain a texture closer to the actual diseased tooth when it is used to simulate the operation of root canal treatment.

3. The printed peripheral tooth base can simulate the gums and teeth around the diseased tooth, and it is more in line with the actual situation of the patient's oral cavity when the diseased tooth prosthesis is placed for simulated root canal treatment.

〔this invention〕

100: Diseased Dental Prosthesis

10: root body

12: Crown core

14: tooth root

16: Pulp cavity

20: crown body

30: Training Endodontics

40:3D printer

50: Peripheral Tooth Block

52: Gum

54: Teeth

56: Root cavity

A: stacked layers

A1: First printing material

A2: Second printing material

A3: The third printing material

S01 to S07: Steps

Fig. 1 is a flow chart of the steps of the manufacturing method of a diseased tooth prosthesis according to a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of printing a diseased tooth prosthesis according to a preferred embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a diseased tooth prosthesis according to a preferred embodiment of the present invention.

Fig. 4 is a flow chart of the steps of the manufacturing method of the peripheral dental socket according to another preferred embodiment of the present invention.

Fig. 5 is a three-dimensional schematic view of a peripheral dental socket according to another preferred embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of another preferred embodiment of the present invention for installing a prosthesis for a diseased tooth.

In order to illustrate the present invention more clearly, preferred embodiments are given and detailed descriptions are given below in conjunction with drawings. Please refer to Fig. 1 to shown in Fig. 3, be the manufacture method of the diseased tooth prosthesis of a preferred embodiment of the present invention, the step flowchart shown in Fig. 1, the step of its method comprises:

(S01) Obtaining a structural image: using 3D medical imaging technology to obtain a structural image of a diseased tooth. For example, in this preferred embodiment, a computerized tomography (CT) scan is used to obtain a 3D structural image of a diseased tooth.

(S02) Build a model: use the structural image to build a 3D stereoscopic model, and obtain a printing parameter of a diseased tooth that can be printed with a 3D printer.

(S03) Print diseased tooth prosthesis: use the 3D printer 40 to print a diseased tooth prosthesis 100 with the printing parameters of the diseased tooth. The tooth root body 10 includes a tooth crown core 12 and a tooth root 14 connected together, and has a pulp cavity 16 inside.

When the 3D printer 40 prints the diseased tooth prosthesis 100, it is printed with two or more printing materials, and the crown body 20 is printed with a first printing material A1, and at least a first printing material is used for printing. The tooth root body 10 is printed with the second printing material A2, and the hardness of the cured tooth crown body 20 is greater than that of the cured tooth root body 10; in this preferred embodiment, only the second printing material A2 is used to print the tooth root body 10. The tooth root body 10 is produced. When the 3D printer 40 prints the diseased dental prosthesis 100, it prints a plurality of stacked layers A and forms the diseased dental prosthesis 100 after being stacked and solidified. The multiple stacked layers A Part of the stacked layer A includes two or more printing materials. For example, in this preferred embodiment, the first printing material A1 for printing the crown body 20 and the second printing material for printing the crown core 12 are included. A2, more specifically, as shown in Figure 2, when the root body 10 and the crown body 20 are printed, the first printing material A1 and the second printing material A2 are stacked and printed on the same horizontal plane. The crown core 12 and the crown body 20 are made, and the crown body 20 surrounds the contour of the crown core 12 .

( S04 ) Filling the training pulp: after the prosthesis 100 of the diseased tooth is printed, a training pulp 30 is filled in the pulp cavity 16 , and the hardness of the training pulp 30 is less than that of the root body 10 .

In addition to the above-mentioned preferred embodiment of the present invention, in addition to filling the training pulp 30 after the diseased dental prosthesis 100 is completed, it can also be used in the step of printing the diseased dental prosthesis (S03) in the corresponding pulp cavity 16 A training pulp 30 is printed on a position of a third printing material A3, and the hardness of the training pulp 30 after curing is smaller than the hardness of the root body 10 after curing.

The present invention produces a diseased tooth prosthesis 100 through the manufacturing method of the diseased tooth prosthesis of the above-mentioned preferred embodiment, as shown in Figure 3, its structure includes a tooth root body 10 and a coating on the tooth root body 10 part The tooth crown body 20 , wherein: the tooth root body 10 includes a tooth crown core 12 and a tooth root portion 14 connected together, and the tooth root body 10 has a hollow pulp cavity 16 inside. The crown body 20 is wrapped around the crown core 12, the tooth root 14 is exposed outside the tooth crown body 20, the hardness of the tooth crown body 20 is greater than the hardness of the tooth root body 10, and the tooth root body 10 is in addition to In addition to being printed and cured with two or more printing materials, it can also be printed and cured with only a single printing material.

Preferably, when the above-mentioned diseased tooth prosthesis 100 is provided as a teaching tool for the dental department, there is a training pulp 30 in the pulp cavity 16, and the training pulp 30 can be filled with the material in the pulp cavity 16. , can also be a structure printed by 3D printing. Since the diseased tooth prosthesis 100 is printed using a 3D model of medical imaging, the structure of each diseased tooth prosthesis 100 can be printed as a different curve structure, which can provide different structures when providing simulation exercises for root canal treatment. Repeated practice of the diseased tooth prosthesis 100 allows the user to be exposed to a variety of different diseased tooth conditions for root canal treatment, improving the effect of teaching exercises.

Please refer to Fig. 4 to Fig. 6, which is another preferred embodiment of the method for making the peripheral tooth base of the diseased tooth prosthesis of the present invention, in order to cooperate with the above-mentioned diseased tooth prosthesis 100 during teaching. Placed in the teaching use of the simulated patient's oral environment, the flow chart of the steps shown in Figure 4, the steps of the method include:

(S05) Obtaining structural images: using 3D medical imaging technology to obtain structural images of diseased teeth, such as the present preferred embodiment, obtaining structural images of diseased teeth and their surrounding teeth and gums by computerized tomography (CT).

(S06) Build a model: use the structure image to build a 3D three-dimensional model, and obtain a peripheral tooth printing parameter that can be used to print the peripheral tooth seat with a 3D printer. The peripheral tooth printing parameter includes the gum 52 and is located on the gum 52. The root cavity 56 of the diseased tooth and the printing parameters of at least one tooth 54 located on both sides of the diseased tooth.

(S07) Print peripheral teeth: use a 3D printing machine to print a peripheral tooth holder 50 with the peripheral tooth printing parameters. When the 3D printer prints the peripheral tooth holder 50, it uses more than one printing material Printing is performed, and the printed peripheral tooth base 50 includes a gum bed 52 and at least one tooth 54 on both sides of the diseased tooth. As in this preferred embodiment, all the teeth 54 of the lower jaw and the mandible are listed Printed out, the gum 52 has a root cavity 56 of a diseased tooth, in which the above-mentioned diseased tooth prosthesis 100 can be disposed.

When choosing to print the peripheral tooth base 50 with at least two printing materials, the gum 52 is printed with a soft printing material, and the teeth 54 are printed with a hard printing material. The printing process is The peripheral tooth base 50 is formed after printing a plurality of stacked layers, which are stacked and solidified. Some of the stacked layers contain more than two kinds of printing materials. The hardness of the hard printing material after curing is greater than that of The hardness of the soft printing material makes the hardness of the printed teeth 54 greater than the hardness of the surrounding dental socket 50 .

When the peripheral tooth base 50 printed in the above-mentioned preferred embodiment cooperates with the diseased tooth prosthesis 100 as a teaching aid in dentistry, it is a diseased tooth with the same shape as that of a certain patient's diseased tooth. The tooth root 14 of the body 100 is embedded in the tooth root cavity 56 of the peripheral tooth base 50 and fixed. Since the diseased tooth prosthesis 100 is set in an environment with at least two teeth 54 and the gum bed 52, the operation of simulating root canal treatment is performed. It is very real and more in line with the situation of the patient's oral cavity, so the effect of teaching exercises is better.

The above description is only a preferred feasible embodiment of the present invention, and all equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the scope of the patent of the present invention.

S01 to S04: Steps

Claims (10)

A diseased tooth prosthesis is made by 3D printing and includes: a tooth root body, including a connected crown core and a tooth root, and has a hollow pulp cavity inside; a tooth crown body, including Covering the core of the crown, the root is exposed outside the crown; wherein the crown body is made of a first printing material, and the root body is made of at least a second printing material It is made by curing, wherein when the root body and the crown body are printed, the first printing material and the second printing material are used to stack and print the crown core and the crown body on the same level , and the crown body surrounds the contour of the crown core, the hardness of the crown body is greater than the hardness of the root body, whereby the diseased dental prosthesis is stacked and solidified in a plurality of 3D printed stacked layers Some of the stacked layers contain more than two kinds of printing materials. The diseased tooth prosthesis as claimed in claim 1, wherein the tooth root body is only made by curing the second printing material. The diseased tooth prosthesis as described in Claim 2, wherein a training pulp is provided in the pulp chamber. A method for manufacturing a diseased tooth prosthesis, the steps comprising: using 3D medical imaging technology to obtain a structural image of a diseased tooth; using the structural image to model and obtain a diseased tooth printing parameter; using a 3D printer to print the diseased tooth Printing parameters Print a diseased tooth prosthesis as described in claim 1, the diseased tooth prosthesis includes a tooth root body and a crown body covering the tooth root body part, and the tooth root body has a pulp chamber; When the 3D printer prints the diseased dental prosthesis, it is printed with two or more printing materials, the crown body is printed with a first printing material, and the dental crown is printed with at least a second printing material. tooth root body, wherein when the root body and the crown body are printed, the first printing material and the second printing material are used to stack and print the crown core and the tooth crown body on the same horizontal plane, and The crown body surrounds the contour of the crown core; the hardness of the cured crown body is greater than the hardness of the cured tooth root body, and when the 3D printer prints the diseased tooth prosthesis, it is The diseased tooth prosthesis is formed after printing a plurality of stacked layers which are stacked and solidified, and some of the stacked layers contain more than two kinds of printing materials. The method for making a diseased tooth prosthesis as described in Claim 4, wherein after the diseased tooth prosthesis is printed, a training pulp is filled in the pulp cavity, and the hardness of the training pulp is less than that of the root body. The method for making a diseased tooth prosthesis as described in claim 4, wherein when the 3D printer prints the diseased tooth prosthesis, a training tooth is printed with a third printing material at the position corresponding to the pulp cavity pulp, the hardness of the trained dental pulp after curing is less than the hardness of the root body after curing. A method for making a dental base around a diseased tooth prosthesis, the steps comprising: using 3D medical imaging technology to obtain structural images of the diseased tooth and its surrounding teeth and gums; using the structural image modeling to obtain a peripheral tooth print parameter, the The printing parameters of the peripheral teeth include the printing parameters of the gum, the root cavity of the diseased tooth on the gum bed, and at least one tooth on each side of the diseased tooth; use the 3D printing machine to print the parameters of the peripheral teeth Make a peripheral tooth seat; when the 3D printer prints the peripheral tooth seat, it is printed with more than one printing material, and the printed peripheral tooth seat includes a gum and at least A tooth, the gum bed has a root cavity of a diseased tooth, in which the diseased tooth prosthesis according to any one of claims 1 to 3 can be set. The manufacturing method of the peripheral tooth socket of the diseased tooth prosthesis as described in claim 7, wherein when the 3D printer prints the peripheral tooth socket, a plurality of stacked layers are printed and accumulated and solidified to form the peripheral tooth socket, Some of the stacked layers include more than two kinds of printing materials. The manufacturing method of the peripheral tooth socket of the diseased tooth prosthesis as described in claim 7 or 8, wherein when the 3D printer prints the peripheral tooth socket, the gum bed is printed with a soft printing material, and a hard The printed material prints the teeth. The manufacturing method of the dental socket around the prosthesis of the diseased tooth as described in claim 9, wherein the hardness of the hard printing material after curing is greater than the hardness of the soft printing material after curing, so that the printed teeth The hardness is greater than that of the gum.

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