KR101045004B1 - Customized Abutment Processing Apparatus and Method for Dental Implants - Google Patents

Abstract

Provided is a custom abutment processing apparatus and method for a dental implant.

Customized abutment processing apparatus for dental implants according to an embodiment of the present invention is a means for receiving data from the dental impression model obtained from the affected part of the dental patient, the user is interested in some areas of the dental impression model generated from the input data Means for receiving input into the area, means for receiving a margin to be the contact boundary of the prosthesis and teeth from the user, means for receiving a crown model to be the basis of the prosthesis from the user, an area of interest received from the user, an upper portion of the prosthesis from the margin and the crown model A means for generating a structure, a region of interest input from a user, a margin and crown model, a means for generating a customized abutment for a dental implant from the generated prosthesis superstructure, and a generated custom implant abutment using a three-dimensional machine Means for producing.

Custom implants, abutments

Description

Abutment processing apparatus and method for dental implants {Method and apparatus for manufacturing custom abutments of dental implant}

The present invention relates to a custom abutment processing apparatus and method for a dental implant, and more particularly, to receive a data from a tooth impression model of a patient, for processing a custom implant abutment of a shape suitable for the patient's teeth An apparatus and method are provided.

Proper implant abutment and prosthetic superstructure crown configuration are very important for restoring teeth that work well with adjacent or opposing teeth. Dental implants are most important for restoring the chewing ability of teeth, but it is equally important to satisfy white, glossy, neat, that is, aesthetic needs. In general, dentists choose implant fixtures and implant abutments from commercially available off-the-shelf products when performing implants. However, the disadvantage of such ready-made products is that the horizontal cross-sectional shape of the chalk enamel boundary area of the root is standardized in a circular shape, which is different in shape and diameter from the root of a natural tooth. For this reason, implant abutments and prosthetic top structures that purchase ready-made products and adjust the gingival model on the tooth impression model will not be able to successfully complete the implant procedure in all cases. In some cases, the gingival perforation of the mucosa is not only consequently deteriorating the success rate of the implant procedure, but also significantly lowers the aesthetic satisfaction of the tissue around the implant after the procedure.

In order to solve these problems and to successfully lead the procedure in response to aesthetic demands, there is a need for an apparatus and a method capable of customizing an appropriate implant abutment for a patient's oral situation.

      The development of computer hardware has promoted the development of 3D scanner and CAD technology since the 1990s, and the number of CAD / CAM systems in the dental industry has been increasing in the last two or three years.

      Currently, the zirconia artificial crown production system is in the commercialization service phase, and the approximate production process is made of a dental model and abutment plaster model as shown in the figure below, modeled by 3D scanner, and then the artificial dental prosthesis is completed on the computer using this input model. After cutting using a milling machine and proceed to the sintering.

      Dental models and abutment-shaped plaster models are fabricated and then digitized using contact / non-contact scanning technology, and an intraoral scanner called an optical impression is used to directly remove the tooth that has been removed from the oral cavity. Technological development is carried out in the same way as CEREC which scans and mills.

      Zirconia is supplied in two states for dental milling, one of which is supplied in a presintered state called green sintering, which is very soft and easily milled.

      In the green state, strong physical properties are obtained through postsintering and a marginal fit is achieved. For this, milling of about 20 to 30% in the green state is achieved, followed by perfect sintering to obtain the fit and strength.

       Another method is milling in a dense sintering or white sintering state, which does not require shrinkage because there is no need for additional sintering, but the disadvantage is that the milling time is long.

       In recent years, pre-sintering has reduced the milling time and used more green state to compensate the shrinkage by computer. The suitability is generally reported as 50 ~ 120 micrometers or less, so it can be applied clinically and has very good suitability. .

      CAD / CAM technology is moving towards the design of artificial dental crowns by simple operation due to the improved user interface. For example, ProCad's DECSY system is based on accurate measurement of the cusp's flow, marginal ridge height and occlusal surface. It recognizes the angle of deployment, the location of the maximum wind, etc., and also has the basic shape registration function and various shape change functions. It is automatic design, and the first design shape is presented to the user in about 10 seconds with different forms of individual crowns.

       The following is the trend of technology development of the leading brands introduced in Korea.

-CEREC: CEREC is an abbreviation of Chairside Economical Restoration of esthetic Ceramics, which treats damaged teeth to look like teeth of the same color through an economical ceramic material.

Sereks are often created through CAD / CAM (Computer Aided Design / Computer Aided Program). In other words, the patient's damaged teeth are photographed using a specially designed camera, and then the damaged teeth are edited into a three-dimensional image through the automatic design program of the Serek machine.

After this process, the CAM (automated computer manufacturing program) will produce the tooth shape while the patient is waiting and the procedure will be completed by attaching the completed structure to the tooth.

It is an object of the present invention to provide an apparatus and method capable of processing a customized implant abutment suitable for a patient's oral condition from a patient's dental impression model.

Another technical problem to be achieved by the present invention is to use a method suitable for a variety of oral conditions of the patient, to increase the success rate of the implant procedure and to create and process a custom implant abutment that can meet the aesthetic needs of the patient It is an object of the present invention to provide an apparatus and method.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the abutment processing device for a dental implant according to an embodiment of the present invention is a means for receiving data from the tooth impression model obtained from the affected part of the dental patient, a tooth impression model generated from the received data Means for receiving a partial region of the user as a region of interest from the user, means for receiving a margin to be a contact boundary between the prosthesis and teeth from the user, means for receiving a crown model to be the basis of the prosthesis from the user, a region of interest received from the user, Means for generating a prosthesis superstructure from a margin and crown model, a region of interest input from a user, means for creating a custom abutment for a dental implant from a margin and crown model and the resulting prosthesis superstructure, the created custom implant abutment Means for fabricating using a three-dimensional processing machine do.

Specific details of other embodiments are included in the detailed description and drawings.

According to the abutment processing apparatus and method for a dental implant of the present invention as described above has one or more of the following effects.

First, it is possible to process tailored abutments that are more suitable for the patient's oral environment and surrounding teeth during the dental implant procedure.

Second, dentists use mass-produced ready-to-use products to perform dental implants. These ready-to-use mass-produced abutments are standardized in a horizontal cross-sectional shape of the chalk enamel boundary of the root. Is different in shape and diameter. For this reason, the implant abutment and its prosthetic superstructure produced by adjusting the gingival model on the impression model squeeze the gingiva of the mucosal penetrating portion, and consequently affect the success rate of the implant procedure. However, using a custom abutment compared to such mass-produced off-the-shelf products can achieve higher procedure success rates.

Third, in implantation, the use of a custom abutment is much more likely to be used for the prosthesis for the oral environment than for the mass-produced off-the-shelf product. Will result.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and only the embodiments of the present invention make the disclosure of the present invention complete and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be appreciated that the combination of each block in the accompanying block diagram and each step in the flowchart may be performed by computer program instructions. These computer program instructions may be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment such that instructions executed through the processor of the computer or other programmable data processing equipment may not be included in each block or flowchart of the block diagram. It will create means for performing the functions described in each step. These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. It is also possible for the instructions stored in to produce an article of manufacture containing instruction means for performing the functions described in each block or flow chart step of the block diagram. Computer program instructions It can also be mounted on a computer or other programmable data processing equipment, so a series of operating steps are performed on the computer or other programmable data processing equipment to create a computer-implemented process to perform the computer or other programmable data processing equipment. It is also possible for the instructions to provide steps for performing the functions described in each block of the block diagram and in each step of the flowchart.

In addition, each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing a specified logical function (s). It should also be noted that in some alternative implementations, the functions noted in the blocks or steps may occur out of order. For example, the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.

1 is a block diagram showing the configuration of a custom abutment processing apparatus for a dental implant according to an embodiment of the present invention.

Custom abutment processing device 100 for dental implants according to the present embodiment is large input unit 110, tooth impression model generation unit 120, region of interest generation unit 130, margin generation unit 140, crown The model reading unit 150, the prosthesis superstructure generating unit 160, the custom abutment generating unit 170, the storage unit 180, the output unit 190 and the processing unit 200 may be configured.

The tooth impression model generating unit 120 receives or inputs information about the oral environment of the patient from the tooth impression model of the patient through the input unit 110 using a 3D scanner or a similar device. By reading the patient impression model stored in the storage unit 180 through the procedure to generate a tooth impression model that can simulate the oral environment of the patient to provide to the region of interest generation unit 130.

The region of interest generation unit 130 displays the dental impression model of the patient generated by the dental impression model generation unit 120 to the user and receives a range of the region of interest from the user on the dental model of the patient. Here, the description will be focused on receiving the ROI from the user, but in another embodiment, the ROI may be automatically recognized by analyzing a tooth model or an oral environment. The region of interest refers to a narrowed area of the entire tooth impression model for the strict application of a custom abutment generation algorithm, but in another embodiment, to exclude interference due to surrounding teeth during intermediate processes or display of results. Also used. An embodiment of the ROI is shown in FIG. 3, and an embodiment of the ROI applied to the tooth model is shown in FIG. 4.

The margin generating unit 140 displays the tooth model generated by the ROI generating unit 130 to the user and receives a margin corresponding to the chalk enamel boundary of the natural tooth root from the user. In the present embodiment, a margin is generated through a predetermined process by receiving a start point and an end point of a margin and intermediate points affecting the position and shape of the margin between two points. However, in another embodiment, a margin is automatically generated by analyzing information about the tooth model and the oral environment, or in another embodiment, the margin extracted by analyzing the information about the model and the oral environment is displayed and provided to the user. Margins can also be created by receiving the start, midpoint, and end points of the margin. One embodiment of generating margins is shown in FIG. 5.

The crown model reading unit 150 allows a user to select one of the crown models stored in the storage unit 180 and reads the contents thereof to read the prosthesis superstructure generating unit 160 and the customized abutment generating unit 170. To be used). In the present embodiment, the crown model is selected from the user, but in another embodiment, the crown model may be automatically selected and provided from information that can distinguish race, gender, age, or other types of crowns. The crown model stored in the storage unit 180 constitutes one set that is different in shape or size according to the type of tooth, and is also provided in several sets according to the characteristics of race, sex, age, etc. You can use the model. An example of selecting the crown model in the crown model reading unit 150 is illustrated in FIG. 6.

The prosthesis superstructure generation unit 160 uses the ROI generated by the ROI generation unit 130, the margin generated by the margin generation unit 140, and the crown model read by the crown model reading unit 150. Thereby creating a prosthesis superstructure suitable for the patient's oral environment and surrounding teeth. In the present embodiment, the generated prosthesis superstructure is divided into two parts again, which is made due to the actual processing convenience of the prosthesis, safety in human body, and economical processing cost, but in another embodiment, the prosthetic superstructure may be processed into one part.

In addition to the dental model read by the ROI generated by the ROI generation unit 130 and the margin generated by the ROI generation unit 140 and the crown model reading unit 150, the custom abutment generation unit 170 may be used. The prosthesis superstructure generated by the prosthesis superstructure generation unit 160 is used to create a custom abutment suitable for the oral environment and affected part of the patient. The custom abutment generated by the custom abutment generation unit 170 may be illustrated as shown in FIG. 7 through the output unit 190.

The storage unit 180 may include a region of interest range, a margin, crown models or a prosthesis superstructure, or a custom abutment which is input by a user at each stage or a user-created abutment processing apparatus or method for a dental implant. Can be stored.

The output unit 190 displays information required by the user in each step, displays information selected or input by the user so that the user accurately grasps, or displays contents generated or processed by the system. The prosthesis superstructure and the custom abutment, which are the result of the prosthesis superstructure generation unit 160 and the custom abutment generation unit 170, are also displayed to the user through the output unit 190.

In addition, the processing unit 200 is a prosthesis superstructure generation unit 160 in the processing device for processing the data based on the three-dimensional processing data, such as a three-dimensional processing machine or a precision processing machine, a multi-axis processing machine, engraver having a similar function And directly transfer the shape and numerical information of the prosthesis superstructure and the custom abutment, which are the result generated by the custom abutment generation unit 170, or indirectly in the form of a file of a predetermined format to actually process the final result. .

Until now, each component of FIG. 1 may refer to software, or hardware such as a field-programmable gate array (FPGA) or an application-specific integrated circuit (ASIC). However, the components are not limited to software or hardware, and may be configured to be in an addressable storage medium and may be configured to execute one or more processors. The functions provided in the above components may be implemented by more detailed components, or may be implemented by combining a plurality of components to perform a specific function. In addition, the components may be implemented to execute one or more computers in a system.

2 is a flowchart illustrating a process of performing a custom abutment processing method for a dental implant according to an embodiment of the present invention.

The tooth impression model generating unit 120 receives or inputs information about the oral environment of the patient from the tooth impression model of the patient through the input unit 110 using a 3D scanner or a similar device. By reading the patient impression model stored in the storage unit 180 through the procedure to generate a tooth impression model that can simulate the oral environment of the patient (S210).

The output unit 190 displays the tooth impression model of the patient generated by the tooth impression model generation unit 120 to the user, and the ROI generation unit 130 inputs a range of the ROI from the user on the tooth model of the patient. Receive (S220).

The received ROI is transferred to the margin generator 140 to display the tooth model generated by the ROI 130 to the user, and receives a margin corresponding to the chalk enamel boundary of the natural tooth root from the user. S230). The user receives the starting point and the end point of the margin, and the intermediate points affecting the position and shape of the margin between the two points to generate a margin through a predetermined process and provide it to the prosthesis superstructure generation unit 160.

The crown model reading unit 150 displays the crown models stored in the storage unit 180 through the output unit 190 so that the user can select them, and allows the user to select one of them to read the contents of the crown model. Create a model (S240). This allows the transfer to the prosthesis superstructure generation unit 160 and the custom abutment generation unit 170 to be used.

Prosthesis superstructure generation unit 160 is the region of interest generated by the region of interest generation unit 130 (S220) and the margin generated in the margin generation unit 140 (S230), and in the crown model reading unit 150 A prosthesis superstructure suitable for the oral environment and surrounding teeth of the patient is generated by using the read crown model (S240).

The custom abutment generation unit 170 may generate the ROI generated by the ROI generation unit 130 (S220) and the margin and crown model reading unit 150 generated by the margin generation unit 140 (S230). In addition to the dental model read (S240) by using the prosthesis superstructure generated by the prosthesis superstructure generating unit 160 (S250) generates a customized abutment suitable for the oral environment and affected part of the patient (S260).

The output unit 190 displays the prosthesis superstructure generated by the prosthesis superstructure generating unit 160 (S250) and the custom abutment generated by the custom abutment generating unit 170 (S260) to the user (S270). ). Before the user decides to process, the above-described process, that is, loading the tooth impression model (S210), region of interest input (S220), margin input (S230), crown model selection and loading (S240), prosthesis superstructure generation All or part of the process (S250) and the custom abutment generation (S260) may be repeatedly performed. By repeating these steps, the final result of the prosthesis superstructure and the customized abutment are also generated by the user's changed input values.

3, 5, 6 and 7 illustrate a user interface of a custom abutment processing apparatus for a dental implant according to an embodiment of the present invention. The user interface of the custom abutment processing apparatus for dental implants according to the present embodiment is a portion 720 for displaying the prosthesis superstructure and the customized abutment and intermediate data, and a portion 310 for defining the range of the region of interest. ), A portion 510 for inputting a margin, a portion 610 for selecting a crown model, and a portion 710 for inputting attributes required for generating a prosthesis superstructure and a custom abutment.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

1 is a block diagram showing the configuration of a custom abutment processing apparatus for a dental implant according to an embodiment of the present invention.

2 is a flowchart illustrating a process of performing a custom abutment processing method for a dental implant according to an embodiment of the present invention.

3 is a diagram illustrating a state of receiving a region of interest on a tooth impression model of a patient according to an exemplary embodiment of the present invention.

4 is a diagram illustrating a state in which a tooth impression model is displayed by applying a region of interest according to an exemplary embodiment of the present invention.

5 is a diagram illustrating a state in which a margin to be a contact boundary between a prosthesis and a tooth is input from a user according to an exemplary embodiment of the present invention.

6 is a diagram illustrating a state in which a crown model to be a base of a prosthesis is input from a user according to an exemplary embodiment of the present invention.

FIG. 7 is a view illustrating a result of generating a customized abutment for a dental implant from a region of interest, a margin and a crown model received from a user, and a generated prosthesis superstructure according to an embodiment of the present invention.

Claims (6)

Means for receiving a range of the ROI from the user; Means for receiving a margin corresponding to the chalk enamel boundary of the natural tooth root from the user in the region of interest; Means for receiving from the user a crown model that is the basis of the shape of the prosthesis superstructure to be finally generated on the margin; Means for creating a prosthesis superstructure needed by the patient using a margin and crown model within the region of interest; Means for creating a customized abutment for the patient using a margin, crown model and prosthesis superstructure within the region of interest; Means for processing the prosthesis superstructure and custom abutments; And Custom abutment processing device for dental implants including means for generating the prosthesis superstructure and custom abutments The method of claim 1, Custom abutment processing apparatus for dental implants comprising means for displaying the prosthesis superstructure and custom abutments The method of claim 1, The range of the ROI is Means for showing a plane from the user and displaying the tooth impression model and inputting the plane in the region of interest; Means for receiving a straight line representing a plane from the user in the range of the ROI while displaying the tooth impression model; Means for receiving a set of straight lines representing a plane bent from a user in a state of a region of interest while displaying the tooth impression model; And Customized abutment processing device for dental implants comprising a means for receiving a set of points representing a curved surface from a user in a range of a region of interest while displaying the tooth impression model The method of claim 1, The margin is Means for receiving, as a margin, a set of points representing a curve from a user within a range of the ROI; And Customized abutment processing apparatus for dental implants comprising means for presenting a curve that can be used as a margin to the user using the characteristic values of the tooth impression model within the range of the region of interest and determining the margin to the user 3. The method of claim 2, The means for displaying The image showing the tooth impression model, the image of the region of interest is applied to the other areas are not visible or blurred, the image showing the margin, the image to select the crown model from the user, the prosthesis superstructure Customized abutment processing device for dental implants, the image shown, the custom abutment Receiving a tooth impression model of a patient from a user; Generating an ROI by receiving a range of ROI from a user on the tooth impression model; Receiving a margin from a user in the ROI; Receiving a crown model from a user; Generating a prosthesis superstructure using a margin and crown model in the region of interest; Generating a custom abutment using a margin, crown model and prosthesis superstructure in the region of interest; Displaying the prosthesis superstructure and a custom abutment; And Customized abutment processing method for dental implants including the step of processing the prosthesis superstructure and custom abutments

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