TW201433299A - Production method of dental auxiliary member - Google Patents

Abstract

The present invention provides a production method of a dental auxiliary member, comprising the steps of: (S1) to obtain a plurality of successive 2D images of the mouth of the patient; (S3) to construct a 3D image model of the patient's mouth by using the successive 2D images; (S5) to analyze and plan plural teeth portions related information based on 3D image model of the patient's mouth, and to construct a 3D image model of the dental auxiliary member; and (S7) subjecting the 3D image model of the dental auxiliary member to a rapid prototyping system for forming a dental auxiliary member. With this design, the production method of the present invention has advantages of simple procedure, short production time, low cost without causing the patient discomfort; Further, when the dental auxiliary member is used as a guide unit of the dental implant, high precision can be provided to help doctors perform the implant drilling; Furthermore, in the production process of dentures, the dental auxiliary member can be used in casting precision models for dentures.

Description

Dental accessory member manufacturing method

The invention relates to a method for manufacturing a dental auxiliary member, in particular to a method for manufacturing a dental auxiliary member which has short production time, high precision and does not cause uncomfortable patients.

Before the doctor implants the patient, he must drill the bones of the patient's mouth and implant the nails to complete the dental implant surgery. Because the dental implants must be very precise and careful to avoid Injury to the patient's mouth and nerves, so before the implant is implanted, the doctor will first make a dental implant guide to carry out the step of implanting the dental implant.

At present, doctors can make dental implant guides as follows: (A1) The mold material must be poured into the patient's mouth to construct the tooth mold; (A2) the tooth mold is turned into a rough dental implant guide; (A3) taking an X-ray film on the patient's mouth, and judging the nerve distribution of the patient's mouth, the drilling depth of the implant hole and the setting position of the dental implant guide; and (A4) the coarse implant tooth The guide member cooperates with the information of the step (A3) to refine the implant guide that is actually used.

It can be seen from the above that in the step (A1), when the molding material is poured into the patient's mouth, the patient is likely to feel uncomfortable, and the molding material takes time to solidify, and the patient does not completely move, so the tooth mold cannot be high. Accuracy; In addition, by making the dental implant guide by the above method, it is necessary to additionally manufacture the tooth mold and make it time-consuming, which causes waste of time and money.

In addition, many patients currently undergo orthodontics. To ensure that the teeth after orthodontics are maintained in a fixed position, the doctor will make braces for the patient. The method is as follows: (B1) must first The molding material is poured into the patient's mouth to construct the tooth mold; and (B2) the tooth mold is turned into a dental mouthpiece. It should be understood that in the step (B1), when the molding material is poured into the patient's mouth, the patient is likely to feel uncomfortable, and the molding material takes time to coagulate, and the patient does not completely move, so the braces cannot have high precision. In addition, by making the braces by the above method, it is necessary to make a tooth mold and make it time-consuming, which causes waste of time and money.

Furthermore, in the process of making dentures, the dentist needs to use the molding material to let the patient bite the mold (female mold), then turn the male mold with gypsum, etc., and then finish and modify it, then use the sculpture special wax in the plaster mold. The denture model is sculpted and then dentured by precision casting. The process is not only cumbersome, but after several times of over-molding, liquid solidification and shrinkage will inevitably lead to precision errors. In the process, not only the professional technicians are required to assist, but also the waste of time and money.

Therefore, how to invent a method for manufacturing a dental auxiliary member to reduce the production time, reduce the manufacturing cost, avoid the patient's discomfort, improve the precision of the dental auxiliary member, and facilitate the use of the doctor will be actively disclosed by the present invention. At the office.

The manufacturing method of the conventional dental auxiliary member is cumbersome, costly, and low in precision, and causes discomfort to the patient during production. Therefore, the present invention provides a method for manufacturing a dental auxiliary member to solve the above problem.

In order to achieve the above object, the present invention provides a method for manufacturing a dental auxiliary member, comprising the steps of: (S1) obtaining a plurality of consecutive 2D images of a patient's mouth; (S3) constructing a patient's mouth by the continuous 2D images. a 3D image model; (S5) analyzing and planning information about the plurality of teeth on the 3D image model of the patient's mouth, and constructing a 3D image model of the dental accessory; and (S7) using the 3D image model of the dental accessory A rapid prototyping system to form a dental accessory.

In a specific embodiment of the present invention, the continuous 2D image system is a computerized tomography scan Traced image (CT image) or magnetic resonance image (MRI image).

In a specific embodiment of the invention, the information about the teeth includes the position of the tooth auxiliary member and the distance between the teeth.

In a specific embodiment of the invention, the dental auxiliary component is a dental implant guide, a braces or a denture precision casting model.

In one embodiment of the invention, the rapid prototyping system is a liquid type rapid prototyping system.

In one embodiment of the invention, the rapid prototyping system is a digital light source processing rapid prototyping system (DLP type rapid prototyping system). The illumination light used in the DLP molding system is UV light.

In one embodiment of the invention, the rapid prototyping system forms the dental auxiliary component by a liquid photopolymer.

In summary, the method for manufacturing the dental auxiliary member of the present invention has the advantages of simple manufacturing steps, short manufacturing time, low cost, and no uncomfortable patient; in addition, when the dental auxiliary member is prepared for dental implant guidance When it is a piece, it has the advantage of high precision and is conducive to doctors' drilling of dental implants.

S100-S700‧‧‧Steps

Fig. 1 is a flow chart showing a method of manufacturing a dental auxiliary member of the present invention.

In order to fully understand the object, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings, which are illustrated as follows: Process for manufacturing the dental auxiliary member of the present invention Figure.

[0020] The method for manufacturing the dental auxiliary member of the present invention will first be described as a specific embodiment by making a dental implant guide. First, in step S100, the user scans the patient's mouth by computerized tomography to obtain a plurality of consecutive computed tomography images (CT images); wherein the user can also use the magnetic resonance imaging method. A plurality of continuous nuclear magnetic resonance images (MRI images) of the disease-changing mouth were obtained. The above CT images or MRI images are all continuous 2D images.

Then, in step S300, the user constructs the 3D image model of the patient's mouth through a set of computer systems (for example, converting the continuous 2D images into STL files by reverse engineering).

Next, in step S500, the user knows the distribution of nerves and blood vessels in the mouth of the patient by analyzing the continuous 2D images (CT images or MRI images) or X-ray films (photographing the patient's mouth in advance); The user calculates the distance between the teeth and the position of the dental implant guide by using the 3D image model of the patient's mouth; and the user simulates the known patient's mouth nerve and blood vessel distribution to the patient's mouth 3D image. The model can be used to plan the position and depth of the implant hole. Then, the user constructs a dental implant guide 3D image model (3D image model of the dental auxiliary member) by using the above-mentioned tooth information.

Finally, in step S700, the user shapes the dental implant guide 3D image model by a rapid prototyping system, and the rapid prototyping system preferably uses a liquid rapid prototyping system. The molding speed is fast; the rapid prototyping system is better to use a digital light source processing rapid prototyping system (DLP type rapid prototyping system), which is not only fast in forming speed but also high in production precision; wherein the DLP type rapid prototyping system uses UV light to illuminate the liquid state. A photopolymer (for example, a UV resin) is used to mold the dental implant guide (dental auxiliary member).

In summary, the method for manufacturing the dental auxiliary member of the present invention has the following advantages when the dental implant guide is manufactured by the above steps: (1) the manufacturing step is simple and rapid, so that the manufacturing cost and the production time can be reduced; There is no material poured into the patient's mouth during the production, so it will not cause the patient's discomfort; and (3) through the judgment and planning of the computer, the dental implant guide has high precision and can effectively prevent the doctor from drilling. The hole hurts the nerves and blood vessels of the patient's mouth.

Referring again to Fig. 1, the method of manufacturing the dental auxiliary member of the present invention will be described with reference to a specific embodiment. First, in step S100, the user scans the patient's mouth by computerized tomography to obtain a plurality of consecutive computed tomography images (CT images); wherein the user can also use the magnetic resonance imaging method. A plurality of continuous nuclear magnetic resonance images (MRI images) of the disease-changing mouth were obtained. The above CT images or MRI images are all continuous 2D images.

Next, in step S300, the user constructs the 3D image model of the patient's mouth through a set of computer systems (for example, converting the continuous 2D image into an STL file by reverse engineering).

Then, in step S500, the user calculates the distance between the teeth, the position of each tooth, and the position of the braces by using the 3D image model of the patient's mouth; and then, the user constructs the information related to the teeth. A braces 3D image model (3D image model of dental accessory).

Finally, in step S700, the user molds the braces 3D image model by a rapid prototyping system, and the rapid prototyping system preferably uses a liquid type rapid prototyping system, and the molding speed is fast; the rapid prototyping system It is better to use a digital light source processing rapid prototyping system (DLP type rapid prototyping system), which is not only fast in forming speed but also high in production precision; wherein the DLP type rapid prototyping system uses UV light to illuminate a liquid photopolymer (for example, UV resin) ) to form the braces (dental auxiliary members).

In summary, the method for manufacturing the dental auxiliary member of the present invention has the following advantages when the dental mouthpiece is manufactured by the above steps: (1) the manufacturing step is simple and rapid, so that the manufacturing cost and the production time can be reduced; (2) The material is poured into the patient's mouth, so it will not cause the patient's discomfort; and (3) by the judgment and planning of the computer, the braces have high precision, so that the braces can be fitted with the patient's teeth.

Referring again to Fig. 1, the method of manufacturing the dental auxiliary member of the present invention will be described with reference to a specific example of making a denture precision casting mold. First, in step S100, the user scans the patient's mouth by computerized tomography to obtain a plurality of consecutive computed tomography images (CT images); wherein the user can also use the magnetic resonance imaging method. A plurality of continuous nuclear magnetic resonance images (MRI images) of the disease-changing mouth were obtained. The above CT images or MRI images are all continuous 2D images.

Then, in step S300, the user constructs the 3D image model of the patient's mouth through a set of computer systems (for example, converting the continuous 2D images into STL files by reverse engineering).

Next, in step S500, the user analyzes the continuous 2D images (CT images or MRI images) or X-ray films (pre-shooting the patient's mouth); the user uses the patient's mouth 3D image model Calculate the spacing of the teeth, computer-aided design, draw the appearance of the dentures, and perform the upper and lower bite alignment, so that the best shape of the dentures (including size, shape, etc.) can be planned; The tooth related information constructs a denture 3D image model (3D image model of the dental accessory).

Finally, in step S700, the user molds the denture 3D image model by a rapid prototyping system. The rapid prototyping system preferably uses a liquid type rapid prototyping system, and the molding speed is fast; the rapid prototyping system is better. Using a digital light source processing rapid prototyping system (DLP type rapid prototyping system), the forming speed is not only fast, but also the production precision is high; wherein the DLP type rapid prototyping system is The denture precision casting model is formed by irradiating a low melting point liquid photopolymer (for example, a UV resin) with UV light.

The doctor can then melt the denture precision casting mold at high temperature (such as dewaxing) to make metal dentures; if ceramic dentures are required, magnetic powder and glaze can be coated on the metal denture base at high temperature. Secondary sintering molding. It can be seen from the above that the denture precision casting model can be used to make a male or female mold of the dentition cavity during the manufacturing process of the denture.

In summary, the method for manufacturing the dental auxiliary member of the present invention has the following advantages when the denture precision casting model is produced by the above steps: (1) the manufacturing step is simple and rapid, so that the manufacturing cost and the production time can be reduced; (2) No material is poured into the patient's mouth during the production, so it will not cause the patient's discomfort; (3) Through the judgment and planning of the computer, the denture production process can pass the occlusion simulation, and the computer will calculate the retention of the fine gap; (4) Since there is no process such as biting over the mold, there is no problem of solidification deformation of the mold material, and therefore the denture has high precision.

It can be seen from the above that the method for manufacturing the dental auxiliary member provided by the present invention can be used to make different dental auxiliary members, such as dental implant guides, braces, dental molds or denture precision casting models, etc. member. In addition, the user can also be a doctor.

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

S100-S700‧‧‧Steps

Claims (8)

A method for manufacturing a dental auxiliary member, comprising the steps of: (S1) obtaining a plurality of consecutive 2D images of a patient's mouth; (S3) constructing a 3D image model of the patient's mouth by the continuous 2D images; (S5) The patient's mouth 3D image model analyzes and plans information about the plurality of teeth, and constructs a 3D image model of the dental accessory; and (S7) forms a tooth by using the rapid prototyping system 3D image model Auxiliary component. The method of claim 1, wherein the continuous 2D image is a computed tomography image (CT image) or a nuclear magnetic resonance image (MRI image). The manufacturing method according to claim 1, wherein the information about the teeth includes a position of the tooth auxiliary member and a pitch of the teeth. The manufacturing method according to claim 1, wherein the dental auxiliary member is a dental implant guide, a braces or a denture precision casting model. The manufacturing method according to claim 1, wherein the rapid prototyping system is a liquid type rapid prototyping system. The manufacturing method according to claim 5, wherein the rapid prototyping system is a digital light source processing rapid prototyping system (DLP type rapid prototyping system). The manufacturing method according to claim 6, wherein the illumination light used in the DLP molding system is UV light. The manufacturing method according to claim 5, wherein the rapid prototyping system molds the dental auxiliary member by a liquid photopolymer.