KR102186542B1 - Apparatus and method for making dental prostheses - Google Patents

Abstract

A dental prosthesis laser processing apparatus according to the present invention includes a memory unit for storing processing information in which a wavelength and intensity of a laser beam corresponding to the material and shape information of the prosthesis are determined in advance; A laser generating a laser beam; A laser controller that controls the laser according to laser emission information; A chamber in which an object to be processed into a prosthesis is accommodated; An optical system for transmitting a laser beam to an object in the chamber according to the optical system control information; A mechanism driving unit that changes the position of the chamber; A position controller for controlling the instrument driving unit according to position control information; And when the prosthesis material and shape information is provided, the processing information is read, the wavelength and intensity of the laser beam are determined to generate laser emission information, and the optical system control for providing the optical system and the position controller corresponding to the shape of the prosthesis. A control device for generating information and position control information, transmitting the laser emission information to the laser controller, transmitting the optical system control information to the optical system, and transmitting the position control information to the position controller; It is characterized.

Description

Dental prosthesis laser processing device and method {APPARATUS AND METHOD FOR MAKING DENTAL PROSTHESES}

The present invention relates to a dental prosthesis processing apparatus, and more particularly, to a dental prosthesis laser processing apparatus and method that enables convenient and detailed processing of a dental prosthesis of various materials using a laser.

In recent years, the use of lasers is increasing in the processes of cutting materials, welding, and forming patterns on materials. Since the method using the laser shows a remarkable advantage in processing speed and precision compared to the conventional processing method, its use has been applied to various fields in recent years.

In particular, a technology for processing using a laser in artificial tooth processing is disclosed. In the prior art, Korean Utility Model Registration No. 20-295086 discloses a dental table unit for tooth processing that is equipped with a procedure microscope, a tooth fixing fixture, a menstrual fluid sprinkler, a plasma irradiation lamp, a lighting lamp, and a dental engine unit. However, this technology has a problem that the precision of processing is poor because a person directly processes the teeth.

In order to solve this problem, Korean Patent Application Laid-Open No. 10-2009-0114913 includes an artificial tooth fixing part that fixes and rotates the artificial tooth, and a first end mill part and a second end mill part that process the artificial tooth in 6 axes. A three-dimensional artificial tooth processing device capable of processing artificial teeth has been disclosed, which is a generally known technology because it is processed by cutting artificial teeth with a plurality of end mills, and there is a problem in that there is difficulty in precise processing of teeth. .

In order to solve this problem, Korean Patent Laid-Open No. 10-2005-0035802 discloses a laser processing machine for dental prosthesis equipped with a laser processing head that processes artificial teeth using a laser, which processes artificial teeth using a laser. Is to do.

However, among the materials for artificial teeth, there are many materials that are damaged by lasers, so there are many restrictions on processing artificial teeth using a laser processing machine for dental prosthesis.

Accordingly, there has been an urgent need to develop a technology that enables convenient and detailed processing of dental prostheses of various materials using a laser.

Korean Utility Model Registration No. 20-295086 Korean Patent Application Publication No. 10-2009-0114913 Korean Patent Application Publication No. 10-2005-0035802

It is an object of the present invention to provide a dental prosthesis laser processing apparatus and method that enable convenient and detailed processing of dental prosthesis of various materials using a laser.

A dental prosthesis laser processing apparatus according to the present invention for achieving the above object includes: a memory unit for storing processing information in which wavelength and intensity of a laser beam corresponding to the material and shape information of the prosthesis are determined in advance; A laser generating a laser beam; A laser controller controlling the laser according to laser emission information; A chamber in which an object to be processed into a prosthesis is accommodated; An optical system for transmitting a laser beam to an object in the chamber according to the optical system control information; A mechanism driving unit that changes the position of the chamber; A position controller for controlling the device driving unit according to position control information; And when the prosthesis material and shape information is provided, the processing information is read, the wavelength and intensity of the laser beam are determined to generate laser emission information, and the optical system control for providing the optical system and the position controller corresponding to the shape of the prosthesis. And a control device that generates information and position control information, transmits the laser emission information to the laser controller, transmits the optical system control information to the optical system, and transmits the position control information to the position controller. It is characterized.

The present invention makes it possible to conveniently and precisely process a dental prosthesis of various materials using a laser, thereby causing an effect of increasing variability in selection of a dental prosthesis material.

1 is a perspective view showing the appearance of a dental prosthesis laser processing apparatus according to a preferred embodiment of the present invention,
Figure 2 is a functional block diagram showing the configuration of the dental prosthesis laser processing apparatus of Figure 1;
3 is a view showing a laser beam output output process using a laser and an optical system in the dental prosthesis laser processing apparatus of FIG. 1;
4 is a procedure diagram of a method for laser processing a dental prosthesis according to a preferred embodiment of the present invention,
5A and 5B are diagrams illustrating laser processing experiment results in the laser processing method for a dental prosthesis of FIG. 4;
6 is a view showing a laser shape processing specification for a dental prosthesis in the dental prosthesis laser processing method of FIG. 4.

The present invention makes it possible to conveniently and precisely process a dental prosthesis of various materials using a laser, so that variability in selection of a dental prosthesis material can be increased.

A laser processing apparatus and method for a dental prosthesis according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

<Configuration diagram of dental prosthesis laser processing device>

1 is a perspective view showing the appearance of a dental prosthesis laser processing apparatus according to a preferred embodiment of the present invention, FIG. 2 is a functional block diagram showing the configuration of the dental prosthesis laser processing apparatus of FIG. 1, and FIG. 3 is a dentistry of FIG. It is a diagram showing the laser beam output output process using a laser and an optical system in a prosthesis laser processing apparatus.

1 and 2, the dental prosthesis laser processing apparatus includes a control device 100, a memory unit 102, a user interface device 104, a laser controller 106, and a laser ( 108), an optical system 110, a processing chamber 120, a position controller 122, a mechanism driving unit 124, and a 3D scanner 126.

The control device 100 generally controls each part of the dental prosthesis laser processing apparatus to process the dental prosthesis according to a preferred embodiment of the present invention.

The memory unit 102 stores various types of information including a control program of the control device 100, and in particular, stores processing information according to a preferred embodiment of the present invention. The processing information is a first table for the time, wavelength, and intensity set differently according to the material and shape of the prosthesis, and a second table for the time, wavelength, and intensity set in advance for finishing differently according to the material and shape of the prosthesis. According to the material and shape of the prosthesis, it is composed of a third table for the time, wavelength, and intensity set in advance for high-resolution processing. Here, the time is the laser beam output time, the wavelength is the wavelength of the laser beam, and the intensity is the intensity of the laser beam. In addition, the processing information may further include a motor moving speed and a number of repetitive processing.

The user interface device 104 is responsible for an interface between a user and the control device 100 and provides various types of information input by the user to the control device 100. In particular, the user may input shape information and material information of the prosthesis through the user interface device 104.

The laser controller 106 controls the laser 108 to generate a laser beam for primary processing and finishing processing, and high-resolution processing of a dental prosthesis according to the position control information by the control device 100.

The laser 108 generates a laser beam of time, wavelength, and intensity according to the control of the laser controller 106 and irradiates it to the outside. The laser beam is a pico-wavelength laser (a laser having an irradiation time in picosecond units of 10 ^-12 seconds or more), a femto-wavelength laser (femtosecond unit of 10 ^-15 seconds or more) for fabricating a prosthesis of various materials. A laser having an irradiation time of) can be employed.

The optical system 110 irradiates the laser beam of the laser 108 to the prosthesis 128 in the processing chamber 120 to correspond to the shape of the prosthesis 128 to perform primary processing, finishing processing, high resolution Process.

The optical system 110, referring to FIG. 3, includes a beam expander 111, an optical mirror or fiber 112, and a scanner head 113. Wow, it is composed of an f-theta lens (F-theta Lens) 114 and the like. At this time, the laser 108 and the optical system 110 are controlled through the laser controller 106 according to the optical system control information by the control device 100. That is, the laser beam output from the laser 108 is variable and amplified by the beam expander 111, and the laser beam expanded by the beam expander 111 is a prosthesis in the processing chamber 120 by the scanner 113 The laser beam that is scanned in the XY direction and is incident on 128) may form a focal point of the same size for the entire processing area of the prosthesis 128 through the f-theta lens 114. In addition, an optical mirror or fiber 112 is installed between the beam expander 111 and the scanner 113 to be incident toward the scanner 113 through variable and reflection of the laser beam by the beam expander 111, and f-theta After being transferred to the scanner 113 including the lens 114, re-output is performed through an internal mirror (not shown), and the scanner 113 moving method may be configured as a fixed method or an On-The-Fly method. .

The processing chamber 120 accommodates a structure for manufacturing a prosthesis, and outputs a laser beam while moving in the x, y, z, b, c 5 axes so that the structure is processed to correspond to the shape of the prosthesis. The x, y, z denotes three axes in a three-dimensional space, and b and c denotes a rotation axis.

The position controller 122 moves the processing chamber 120 to the x,y,z,b,c 5 axes according to the position control information from the control device 100 by x,y,z,b,c 5 Controls the driving of the mechanism driving unit 124 composed of a shaft motor.

The 3D scanner 126 3D scans the prosthesis 128 under the control of the control device 100 and provides the 3D-scanned information to the control device 100. Here, the control device 100 receives the 3D scan information and compares the information of the prosthesis to be processed, and is used to guide the processing state of the prosthesis to the user or check the current state for finishing processing or high-resolution processing.

<Dental prosthesis laser processing process>

A dental prosthesis laser processing method applicable to the above-described dental prosthesis laser processing apparatus will be described in detail with reference to FIGS. 4 to 6.

When a user's request for processing a prosthesis occurs (step 200), the control device 100 of the dental prosthesis laser processing apparatus guides input of the material and shape information of the prosthesis for processing the prosthesis (step 202).

According to the above guide, the user can input prosthesis material and shape information for processing a dental prosthesis. When the prosthesis material and shape information is input (step 204), the control device 100 determines a predetermined time, wavelength, and intensity corresponding to the input prosthesis material and shape information to generate laser emission information (206). step).

Here, with reference to Table 1 and FIGS. 5A and 5B, the results of testing the time, wavelength, and intensity corresponding to the prosthesis material and shape information obtained based on the experiment will be described as an example.

Table 1 shows the experimental results showing the processing characteristics of each laser type.

5A is an experiment result diagram showing processing characteristics according to a change in output of a picosecond laser, and FIG. 5B is an experiment result diagram showing processing characteristics according to a change in output of a femtosecond laser.

Laser CO ₂ laser Picosecond laser Femtosecond laser wavelength 1064 um 1064 nm 800 nm Print 5W(max) 5W(max) 5W(max) Prosthesis
Material Glass+ceramic Resin + Ceramic Glass+ceramic Resin + Ceramic Glass+ceramic Resin + Ceramic Experiment
result Cracking Carbonization and
Cracking Processing possible Carbonization and
Cracking Processing possible Processing possible

Referring to Table 1, it can be confirmed that a picosecond laser is suitable for processing in the case of a glass ceramic material and a femtosecond laser in the case of a resin and glass ceramic material. In addition, referring to FIGS. 5A and 5B, it can be seen that the appropriate intensity of the laser is different depending on the glass ceramic material and the prosthesis material such as resin and glass ceramic material. Accordingly, the laser output change, for example, laser beam output time, motor It is possible to adjust the processing width and depth of the prosthesis, and the processing shape according to the movement speed and the number of repeated processing. At this time, the laser processing shape (A) is preferably processed in a circular or linear pattern shape, as shown in FIG. 6, and the range R (Ratio) of the processed shape is preferably the following range. That is, the range of R(Ratio) = d/w = 0.2 to 1.5, which is the laser shape processing specification (A), is most preferable. Here, d represents the depth value of the processed shape, and w represents the width value of the processed shape.

Accordingly, the present invention stores the processing information in the memory unit 102 by pre-determining the wavelength and intensity of the laser beam corresponding to the prosthesis material and shape information. The processing information is a first table for the time, wavelength, and intensity set differently according to the material and shape of the prosthesis, and a second table for the time, wavelength, and intensity set in advance for finishing differently according to the material and shape of the prosthesis. According to the material and shape of the prosthesis, it is composed of a third table for the time, wavelength, and intensity set in advance for high-resolution processing.

In addition, the control device 100 generates optical system control information and position control information for processing the prosthesis corresponding to the shape of the prosthesis (step 208). This position control information is x,y,z,b,c 5-axis motor driving information, and the optical system control information is driving information for driving a mirror, a scanner, etc. of the optical system 100.

When the laser emission information, position control information, and optical system control information are provided as described above, the control device 100 drives the laser 108, the optical system 110, and the instrument driving unit 124 to process the prosthesis (210). step).

Thereafter, the control device 100 scans the first processed prosthesis through the 3D scanner 126 according to the user's request (step 212).

The control device 100 generates laser emission information by determining a predetermined time, wavelength, and intensity for finishing processing of the prosthesis according to the 3D scan information of the prosthesis processed first (step 214). In addition, the control device 100 generates prosthesis position control information and optical system control information for finishing processing of the prosthesis according to the 3D scan information of the prosthesis processed first (step 216).

When the laser emission information, prosthesis position control information, and optical system control information are generated as described above, the control device 100 drives the laser 108, the optical system 110, and the instrument driving unit 124 accordingly to Finishing is performed (step 218).

Thereafter, the control device 100 scans the secondary processed prosthesis through the 3D scanner 126 according to the user's request (step 220). The control device 100 generates laser emission information by determining a predetermined time, wavelength, and intensity for high-resolution processing of the prosthesis according to the 3D scan information of the secondly processed prosthesis (step 222).

Further, the control device 100 generates prosthesis position control information and optical system control information for high-resolution processing of the prosthesis according to the 3D scan information of the prosthesis that has been secondarily processed (step 224).

Next, when laser emission information, prosthesis position control information, and optical system control information are generated, the control device 100 drives the laser 108, the optical system 110, and the instrument driving unit 124 accordingly to perform high-resolution processing of the prosthesis. (Step 226).

The embodiments of the present invention described above are disclosed for purposes of illustration, and those of ordinary skill in the technical field of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. , Changes and additions should be seen as falling within the scope of the present claims.

100: control device
102: memory unit
104: user interface device
106: laser controller
108: laser
110: optical system
120: processing chamber
122: position controller
124: mechanism driving part
126: 3D printer

Claims (10)

In the dental prosthesis laser processing apparatus,
A first table for the wavelength and intensity of the laser beam determined in advance for the primary processing to correspond to the material and shape information of the dental prosthesis, a second table for the wavelength and intensity of the laser beam determined in advance for the finishing processing, And a memory unit for storing processing information including a third table for the wavelength and intensity of the laser beam determined in advance for high-resolution processing.
A laser generating a laser beam;
A laser controller that controls the laser according to laser emission information;
A chamber in which an object to be processed into the dental prosthesis is accommodated;
A 3D scanner for 3D scanning the processed prosthesis;
A beam expander for varying and amplifying the laser beam output from the laser,
A scanner that allows the laser beam enlarged by the beam expander to be scanned in the XY direction to the dental prosthesis in the chamber, and an optical mirror or fiber installed between the beam expander and the scanner to cause the laser beam to enter the scanner And, with an f-theta lens that allows the laser beam incident on the scanner to form a focal point of the same size over the entire dental prosthesis processing area, and transmits the laser beam to the object in the chamber according to the optical system control information. An optical system;
A mechanism driving unit that changes the position of the chamber;
A position controller for controlling the instrument driving unit according to position control information; And
Upon receiving the dental prosthesis material and shape information,
When the dental prosthesis is a glass ceramic material, the laser uses a pulse laser of 10 ^-12 seconds or longer, and when the dental prosthesis is a resin and glass ceramic material, the laser uses a pulse laser of 10 ^-15 seconds or more. and,
Optical system control information for reading the processing information, determining the wavelength and intensity of the laser beam according to the first table, generating laser emission information, and providing the optical system and position controller corresponding to the shape of the dental prosthesis; Generating position control information, transmitting the laser emission information to the laser controller, transmitting the optical system control information to the optical system, transmitting the position control information to the position controller,
Laser emission information obtained by receiving 3D scan information of the dental prosthesis from the 3D scanner and determining the wavelength and intensity of the laser beam according to the second table or the third table for finishing processing or high-resolution processing of the dental prosthesis, Generates optical system control information and position control information for providing the optical system and position controller, transmits the laser emission information to the laser controller, transmits the optical system control information to the optical system, and transmits the position control information to the position Control device for transmitting to the controller; dental prosthesis laser processing apparatus comprising a. The method of claim 1,
The moving method of the scanner is composed of a fixed type or On-The-Fly type,
The processing information further includes a laser beam output time. The method of claim 1,
The mechanism driving part for changing the position of the chamber,
X, y, z, b, c dental prosthesis laser processing apparatus, characterized in that it is configured to include a 5-axis motor. The method of claim 1,
The shape information includes a processing width, depth, and processing shape of the dental prosthesis, and the processing shape is a circular or linear pattern shape. The method of claim 4,
The range of the laser processing shape is in the range of R(Ratio) =d/w= 0.2 to 1.5,
Wherein d represents the depth value of the processed shape, w is a dental prosthesis laser processing apparatus, characterized in that the width value of the processed shape. In the dental prosthesis laser processing method,
The control device of the dental prosthesis laser processing device,
A first table for the wavelength and intensity of the laser beam determined in advance for the primary processing to correspond to the material and shape information of the dental prosthesis, a second table for the wavelength and intensity of the laser beam determined in advance for the finishing processing, And storing processing information consisting of a third table for the wavelength and intensity of the laser beam determined in advance for high-resolution processing.
When the dental prosthesis is a glass ceramic material, the laser uses a pulse laser of 10 ^-12 seconds or longer, and when the dental prosthesis is a resin and glass ceramic material, the laser uses a pulse laser of 10 ^-15 seconds or more. Step to do;
By receiving prosthesis material and shape information through the user interface, the wavelength and intensity of the laser beam according to the first table corresponding to the material and shape information of the provided prosthesis are detected from the processing information, and the shape of the dental prosthesis is It generates optical system control information and position control information correspondingly to provide an optical system and a position controller, transmits the laser emission information to a laser controller, transmits the optical system control information to an optical system, and transmits the position control information to a position controller. Transmitting;
Laser emission information, the optical system, and the position of the laser beam according to the second table or the third table to determine the wavelength and intensity of the laser beam according to the second table or the third table for finishing processing or high-resolution processing of the dental prosthesis by receiving 3D scan information of the prosthesis from a 3D scanner Generating optical system control information and position control information for providing a controller, transmitting the laser emission information to the laser controller, transmitting the optical system control information to the optical system, and transmitting the position control information to the position controller step; And
The laser controller controls a laser according to the laser emission information to generate a laser beam, and the optical system transmits a laser beam to an object in a chamber containing an object to be processed into the dental prosthesis according to the optical system control information. And processing the dental prosthesis by controlling the device driving unit for varying the position of the chamber by the position controller according to the position control information. The method of claim 6,
The processing information further includes a laser beam output time, a motor moving speed, and a number of repetitive processing. The method of claim 6,
The mechanism driving part for changing the position of the chamber,
Laser processing method of a dental prosthesis, characterized in that configured to include a x, y, z, b, c 5-axis motor. The method of claim 6,
The shape information includes a processing width, depth, and processing shape of the dental prosthesis, and the processing shape is a circular or linear pattern shape. The method of claim 9,
The range of the laser processing shape is in the range of R(Ratio) =d/w= 0.2 to 1.5,
Wherein d represents the depth value of the processed shape, w is a dental prosthesis laser processing method, characterized in that the width value of the processed shape.

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