KR101371211B1

KR101371211B1 - Scanner for oral cavity

Info

Publication number: KR101371211B1
Application number: KR1020130081775A
Authority: KR
Inventors: 이태경; 김성국; 최진혁
Original assignee: 김성국; 이태경
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2014-03-10

Abstract

A scanner for the oral cavity is disclosed. The scanner for the oral cavity according to an embodiment of the present invention comprises: a light outputting unit to which a laser light source is irradiated; a phase changing unit changing the outputted light outputted from the light outputting unit into different phases for different periods of time; a phase detecting unit detecting position or state information according to the movement of the phase changing unit; a first reflecting unit disposed to face the light outputting unit and refracting the light irradiated from the light outputting unit; a second reflecting unit disposed to face the first reflecting unit and reflecting the light reflected through the first reflecting unit toward an object to be measured disposed in the mouth of a patient; an image information obtaining unit disposed at the rear of the first reflecting unit and converting the reflected light inputted and reflected from the object to be measured into two-dimensional image information; and an acceleration sensing unit sensing the change in acceleration while obtaining data about the object to be measured.

Description

Oral Scanner {Scanner for Oral Cavity}

The present invention relates to an oral scanner that can be inserted into the oral cavity of a dental patient to obtain accurate scanning information for a plurality of teeth, gingival tissue and prostheses, and can be used for dental treatment using the information.

In general, in order to manufacture a prosthesis applied to the oral cavity of a human body, a dental model is generally made of a plaster model (Master Model) by imitation of the oral cavity, and a prosthesis is made based on the plaster model, and the plaster model is molded. The fabrication method used is traditional and has been progressed for a long time, so it is reliable and standardized, but it is difficult to match the error of the impression process and the coma ratio of the impression material, and the curing time of the impression material varies depending on temperature and humidity. There was something difficult to expect.

In addition, a material expressing a constant impression hardening condition, such as a silicone impression material has a disadvantage that the cost burden of the patient is increased due to the high price, there is an inconvenience that does not fall well in the process of removing the impression material after curing in the oral cavity.

As a result of inconsistent with continuous consumption of materials, a method of directly acquiring a three-dimensional environment in the oral cavity using optical equipment has been devised to solve application inconveniences.

For this purpose, the projector is used as a light source to irradiate the oral cavity, which is acquired by a camera, and converted into three-dimensional data by using a triangular method. The sharpness of is not high and there is a limit to increase the precision due to the light blurring with distance.

In addition, the method widely used to determine the state of the oral cavity is a sheet-like film is inserted into the oral cavity to fix the film near the affected area using the patient's hand or tongue, and then radiation such as x-rays to the affected area of the oral cavity A method of projecting and using film based thereon has been proposed.

However, this method may cause errors in the process of two-dimensional plane measurement of a three-dimensional structure by performing manual measurement in two dimensions using a radiograph or relying on computer tomography. There is this. In addition, the patient may be exposed to a large amount of radiation, and the patient's economic burden and complexity at the implementation stage may cause many clinical problems. Therefore, there is a need for an oral scanner capable of accurately three-dimensional modeling of teeth while having a low possibility of causing a problem in a patient's health.

Republic of Korea Patent No. 10-1175616 (Registration Date: August 14, 2012)

Embodiments of the present invention are more convenient and efficient scanning of teeth, gingival tissue, and prostheses disposed inside the oral cavity of the patient and at the same time to minimize the data errors caused by movement of the oral scanner during data acquisition more accurate To obtain scanning information about the teeth of the patient.

According to an aspect of the invention, the light output unit is irradiated with a laser light source; A phase shifter for converting output light output from the light output part into different phases for different times; A phase detector for detecting position or state information according to the movement of the phase shifter; A first reflector disposed to face the light output unit and refracting light emitted from the light output unit; A second reflector disposed to face the first reflector and reflecting light reflected through the first reflector toward an object to be measured disposed in a mouth of a patient; An image information acquisition unit disposed behind the first reflector and configured to receive reflected light reflected from the object to be measured and convert the received light into two-dimensional image information; And an acceleration sensing unit that senses an acceleration change while acquiring data on the object to be measured.

The light output unit includes a light generating unit for generating laser light; It is provided on the upper surface of the light generating unit and includes an optical phase change unit for irradiating the laser light to the first reflecting unit in the form of a line.

The first reflector may be any one of a deposition coated flat glass, a deposition coated right angle prism, or a deposition coated bonding prism.

The first reflector is characterized in that any one of the transflective prism or glass is selectively used.

The first reflector may be formed of the same length as each of the horizontal length and the vertical length.

The phase shift part includes a moving part which receives a rotational or linear movement force through an electromagnetic force generated between electricity and a magnet and reciprocates a seating part on which the light output part is seated.

The phase shift unit includes a moving unit which receives a rotational force through an electromagnetic force generated between electricity and a magnet to rotate the seating unit on which the light output unit is mounted.

The phase shift unit includes a rotation shaft that receives the rotational force generated from the motor and rotates the light output unit at a fixed position.

The oral scanner includes a guide part for guiding stable movement of the seating part.

The phase shift unit may receive a rotational force generated from a motor and a belt wound around the light output unit to rotate the light output unit at a fixed position; And a rotation axis provided to extend outwardly of the light output part and to rotate in a fixed position while the light output part is rotated by a belt.

The second reflector may be configured to completely reflect light irradiated through the first reflector to refracted to the object to be measured.

The oral scanner generates a plurality of 3D data by calculating the data transmitted from the image information acquisition unit and the phase detection unit, and matches the 3D data using the data transmitted through the acceleration detection unit to measure the patient's blood. And generating a scanning model for the object.

The oral scanner includes a scanner body in which the operator grips the hand; It includes an insert which is installed in front of the scanner body and the second reflecting portion is installed at the front end and inserted into the mouth of the patient.

The insert may be selectively detachably coupled to the scanner body.

The insert is characterized in that the relative rotation in the longitudinal direction in the state coupled to the scanner body.

Embodiments of the present invention can obtain accurate scanning and reliable scanning data by matching them even when shaking or positional movement occurs in the process of acquiring 3D scanning data of a patient's teeth and distortion occurs in the data. have.

In the embodiments of the present invention, since the insert having the minimum area is inserted into the oral cavity of the patient, the volume is minimized so that both the operator and the patient can conveniently perform the scanning operation.

1 is a partially exploded perspective view of a scanner for oral cavity according to an embodiment of the present invention.
Figure 2 is a perspective view showing a phase shifter of the oral scanner according to another embodiment of the present invention.
3 is a view showing an example of a moving state of the phase shift unit of the oral scanner according to an embodiment of the present invention.
4 is a view showing the oral scanner in accordance with another embodiment of the present invention.
FIG. 5 is a diagram illustrating various embodiments of a first reflector installed in an oral scanner according to an embodiment of the present disclosure; FIG.
FIG. 6 is a diagram illustrating a trajectory of the light output unit irradiated to the second reflecting unit according to an embodiment of the present disclosure.
7 is a block diagram showing a main configuration associated with a data control module according to an embodiment of the present invention.
8 to 9 is a state diagram used in the oral scanner according to an embodiment of the present invention.
Figure 10 is a use state according to another embodiment by the oral scanner according to an embodiment of the present invention.

The configuration of an oral scanner according to an embodiment of the present invention will be described with reference to the drawings. 1 is a partially exploded perspective view of an oral scanner according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a phase shift unit of the oral scanner according to another embodiment of the present invention.

Referring to FIG. 1, the oral scanner 1 according to an embodiment of the present invention enables accurate measurement without opening a patient's mouth largely to scan a tooth to be measured, and the oral scanner Even if shaking occurs while scanning the tooth using (1), it can be consistently generated to generate a three-dimensional scanning model.

To this end, the oral cavity scanner 1 according to an embodiment of the present invention has a scanner body 1a having at least one handle 1d formed by a surgeon, and a cover 1c that is coupled to the scanner body 1a. ) And an insert 1b installed in front of the scanner body 1a.

In the scanner main body 1a according to the present embodiment, a handle 1d for gripping by the operator is formed, a space part having a predetermined space is formed inside the upper portion of the handle 1d, and the insert 1b. One side of the tip portion includes an opening 1e which is opened.

The insert 1b is selectively detachably coupled to the scanner main body 1a, extends with a predetermined length, and is formed in the shape of a bar-shaped cuboid, but is not necessarily limited to the above shape. Insert (1b) is made of a material harmless to the human body is inserted into the patient's oral cavity and will be described later in more detail.

In the oral cavity scanner 1 according to an embodiment of the present invention, the optical output unit 100 to which the laser light source is irradiated therein and a phase variation for converting the optical output unit 100 into different phases for different time periods. The unit 200, a phase detector 300 that detects position or state information according to the movement of the phase shifter 200, and the light output unit 100 are disposed to face each other and are arranged to face each other. The first reflector 400 for refracting the light irradiated from the light, and facing the first reflector 400, the light reflected through the first reflector 400 is disposed in the oral cavity of the patient The second reflector 500 reflecting toward the target object 10 to be measured and the reflected light reflected from the target object 10 disposed behind the first reflector 400 and receiving a 2D image An image information acquisition unit 600 for converting the information into information; And an acceleration detector 700 that detects an acceleration change while acquiring data on the object to be measured 10.

A light output unit according to an embodiment of the present invention will be described.

The light output unit 100 includes a light generation unit for generating laser light, and an optical phase change unit installed on an upper surface of the light generation unit and irradiating the laser light to the first reflection unit 400 in a line form.

The light generating unit may be any one of a conventional laser, a light emitting diode (LED), and a halogen lamp. The light generating unit may be selectively used. The optical phase shift unit emits light by irradiating linear light toward the first reflector 400, and the power required for operation is a power cable (not shown) extending outside the built-in battery or the oral cavity scanner 1. It is activated through authorization. The light output unit 100 is disposed to face the first reflecting unit 400, which will be described later, and is installed to be movable by the phase shifting unit 200.

A phase shift unit according to an embodiment of the present invention will be described.

The phase shift unit 200 includes a moving unit 220 which receives the rotational force generated from the motor 210 and reciprocates the seating unit 201 on which the light output unit 100 is seated.

The seating part 201 supports the lower side of the light output part 100 and is connected to the moving part 220 and is formed in a plate shape as shown in the drawing, but is not necessarily limited to the above shape.

The moving unit 220 includes a first link 222 inserted into a motor shaft installed in the motor 210, a second link 224 connected to an end of the first link 222, and the second link 224. The link 224 extends relatively longer than the first link 222 to be connected to the seating portion 201 described above. When the motor shaft is rotated, the first link 222 is rotated along the motor shaft, and the second link 224 connected to the first link 222 is reciprocated in the arrow direction by the first link 222. .

Scanner for oral cavity 1 according to the present invention includes a guide portion 800 for guiding the stable movement of the seating portion 201, the guide portion 800 is a state in which a part of the seating portion 201 is inserted Is maintained and in this embodiment is installed in the form of a bar, extending in a predetermined length, facing each other and spaced up and down.

The seating part 201 is installed while being inserted between the guide parts 800, and is relatively moved along the guide part 800 by the rotation of the motor 210. For reference, the guide part 800 is not limited to the shape shown in the drawing, but in another form in which the movable part can be stably moved while the seating part 201 on which the light output part 100 is seated is moved. Note that it may change.

A phase shift unit according to another exemplary embodiment of the present invention will be described with reference to the drawings.

2 to 3, in another embodiment, the phase shifter 200 receives the rotational force generated from the motor 210 and rotates the light output unit 100 in the correct position. A belt 230 wound on the outer side of the output part 100 and extending toward the outer side of the light output part 100 and provided to rotate in a fixed position while the light output part 100 is rotated by the belt. Rotating shaft 240 is included.

The light output unit 100 is formed in a pulley shape so that the belt 230 is wound, and the rotation shaft 240 extends with a predetermined length toward the lower side. The rotating shaft 240 is maintained in a state in which a portion of the lower end is inserted into a groove (not shown) formed inside the scanner body 1a, and the rotating shaft 240 is also inserted by a portion of the shaft guide (not shown) Even when the belt 230 is rotated, the belt 230 may be rotated in a right position without moving to one side.

Oral scanner (1) is a rotating plate formed in the form of a disc on the lower side of the light output unit 100 and a plurality of slit holes in the circumferential direction in order to recognize the position information of the light output unit 100 rotated in the right position And a light transmitting part and a light receiving part disposed to face each other based on the slit hole of the rotating plate. Since the rotating plate has a center hole in which the rotating shaft 240 is inserted in the center, the rotating plate rotates simultaneously with the rotating shaft 240.

For example, since the rotating plate is rotated and the light emitted from the light transmitting unit is detected through the light receiving unit through the slit hole, and the light is not detected through the light receiving unit in the portion where the slit hole is not formed, the light output unit 100 is installed. Each time the rotating plate is rotated, a constant pulse is generated and the generated pulse is transmitted to the data control module 900. The data control module 900 may receive the input and recognize the position according to the rotation of the light output unit 100.

The phase detector 300 according to an embodiment of the present invention uses an encoder, and when the optical output unit 100 is moved, the encoder detects position information and transmits the position information to the data control module 900 which will be described later. The data control module 900 receives a signal transmitted from an encoder and calculates different positions of the light output unit 100.

Oral scanner according to another embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 4, the phase detector 300, the first reflector 400, the second reflector 500, the image information acquirer 600, The insert 1b, the opening 1e and the scanner main body 1a have the same configuration, but the light output unit 100 is configured to be rotatable in a clockwise or counterclockwise direction.

When the optical output unit 100 is installed as described above, the configuration is relatively simple, and the vibration caused by the rotation and the noise generated therefrom are minimized, thereby generating noise in the scanning data of the patient acquired through the image information acquisition unit 600. Minimization speeds up computations and improves continuity during registration through software, enabling faster and more accurate three-dimensional scanning of the patient's teeth.

For reference, the phase shifter (not shown) is not shown, but is installed at the side of the light output unit 100, or is installed at the rear is connected to the belt or the like. At this time, the power supply of the light output unit 100 may be used a brush (not shown) power supply method, but is not necessarily limited thereto.

A first reflecting unit according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 5A through 5C, the first reflector 400 may be selectively used of any one of a deposition coated flat glass, a deposition coated right angle prism, and a deposition coated bonding prism. .

For example, the deposition-coated flat glass is a state in FIG. 5A, after the laser light emitted from the light output unit 100 is irradiated toward the first reflecting unit 400 as shown in the arrow direction. The laser is refracted and moved toward the right side as a reference, and the reflected laser after being irradiated to the tooth is reflected back to the first reflector 400 and input to the image information acquirer 600.

The deposition-coated right angle prism is shown in FIG. The laser is refracted and moved at right angles toward, and the reflected laser after being irradiated to the teeth is reflected back to the first reflector 400 and input to the image information acquirer 600.

The deposition-coated bonded prism is a state of FIG. 5 (c), and the two rectangular prisms are bonded to each other in a state of facing each other, and can be used in a state where the refractive is minimized. Precision is further improved.

Referring to FIG. 6, in the prism 400 according to an embodiment of the present invention, a bonding prism is used on the upper side of the light output unit 100, and a reflecting plate inclined at a predetermined angle is installed inside the light output unit 100. The light emitted from the unit 100 partially reflects.

The first reflector 400 has a horizontal length and a vertical length having the same length. The light irradiated from the light output part 100 is irradiated in the form of linear emission. The light output part 100 is a phase shifting part. When it is moved in the direction of the arrow by the arrow 200, the light is irradiated in the form shown by the bold solid line in the first reflector 400, each irradiated light is moved straight toward the second reflector (500).

In addition, the light output unit 100 is a reciprocating movement by the phase shift unit 200, the entire stroke (S) to which the light output unit is moved is a length corresponding to the longitudinal length of the first reflecting unit 400 Since the area of the horizontal length and the vertical length of the first reflector 400 corresponds to an area of 1.5 times the size of a general tooth, the light irradiated through the first reflector 400 may scan a tooth. When enough coverage can be obtained, accurate scanning data can be obtained.

A second reflector according to an embodiment of the present invention will be described.

The second reflecting unit 500 completely reflects the light irradiated through the first reflecting unit 400 to be refracted into an eye, which is the object 10 to be measured, and is inserted into the front end of the insert 1b. The second reflector 500 is installed to have a size corresponding to the first reflector 400 and is inclined at an angle of 45 ° to reflect light to the opening 1e.

An image information acquisition unit according to an embodiment of the present invention will be described.

The image information acquisition unit 600 is installed at the rear of the first reflection unit 400, and the light irradiated through the light output unit 100 is irradiated to the teeth through the first and second second reflection units 400 and 500. After the light irradiated onto the tooth is re-reflected and moved to the first reflecting unit 400 via the second reflecting unit 500, the image information acquiring unit may be passed through the first reflecting unit 400. 600). Note that the image information acquisition unit 600 uses a charge coupled device, but it is also possible to use a CMOS device having a similar function.

An acceleration sensing unit according to an embodiment of the present invention will be described.

Referring to FIG. 1 or FIG. 2, the acceleration detection unit 700 is directed toward the X-axis or the Y-axis and the Z-axis while the operator scans the teeth inside the patient's mouth using the oral scanner 1. Measurement is performed while moving, in this case, shaking may occur during the movement or the scanner 1 may collide with a partial contact or teeth in the mouth of the patient, causing shaking. The present invention senses and transmits the acceleration information of the scanner for oral cavity (1) through the acceleration detection unit 700 in order to minimize the error of the scanning data due to the shaking and impact and transmits to the data control module (900) For example, the acceleration sensor 700 may use an acceleration sensor.

A data control module according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 2, the data control module 900 includes both the two-dimensional information of the teeth acquired through the image information acquisition unit 600 and the acceleration information input through the acceleration detection unit 700. The input generates a three-dimensional scanning model (N1 and N2 of Figure 9 attached) for the patient's teeth.

In addition, in order to match the information on the patient's teeth, the data is received through the phase detection unit 300, the acceleration detection unit 700 and the image information acquisition unit 600, respectively, the scanning model 1000 (attached FIG. d) to complete.

A state of use of the oral scanner according to an embodiment of the present invention configured as described above will be described with reference to the drawings.

7 to 8, the operator assembles the insert 1b in accordance with the tip of the scanner main body 1a as shown in the drawing before performing the 3D scanning operation on the teeth disposed inside the patient's mouth. do.

Then, after moving the insert 1b into the oral cavity of the patient, when the power switch (not shown) is turned on, light emitted from the light output unit 100 is irradiated toward the first reflecting unit 400. do. Since the light output unit 100 is provided with a separate pre-light emitting optical body in front of the lens so that the pre-light emission is made, the light output unit 100 has the same or similar length as the first reflecting unit 400, and thus the light emission is performed. At the same time, as the motor shaft installed in the motor 210 is rotated, the first link 222 is rotated together with the motor shaft, and as the second link 224 is rotated, the light output unit 100 installed in the seating unit 201. The light is irradiated while reciprocating in the direction of the arrow.

The light output unit 100 according to the present embodiment is stably reciprocated without being separated out or malfunctioned while the guide unit 800 is moved to the above state.

2 and 8, a portion of the light irradiated toward the first reflecting unit 400 is transmitted and a portion of the light is moved straight toward the second reflecting unit 500, and the second reflecting unit ( The light irradiated toward the tooth through 500, and the light irradiated onto the tooth is reflected again and irradiated to the second reflector 500 to pass through the image information acquisition unit 600 via the first reflector 400. It is input as two-dimensional image data. The operator performs the scanning operation on the teeth of the patient while moving the position of the insert 1b in the above manner with respect to the teeth disposed in the mouth of the patient.

The phase detector 300 transmits different phase data of the output light irradiated from each phase to the control module 900 when the phase detector 300 changes to a different phase. Used to construct the model.

The oral cavity scanner 1 according to the present exemplary embodiment should obtain three-dimensional information about the oral cavity area over the area of the first reflecting unit 400 and move the scanning target area for this purpose. At this time, three-dimensional information (Fig. 9, N1) corresponding to the area of the first reflector 400 is configured first, and after moving the position of the scanner, new three-dimensional information (Fig. 9, N2) is constructed and mutually Match (Fig. 9, d). At this time, by using the information on the movement direction and the amount of movement of the scanner received through the acceleration detection unit 700 can be utilized to match the respective three-dimensional information configured at different scanner positions, oral cavity as a scanner of the present invention It becomes possible to obtain three-dimensional information about the entire area of.

The two-dimensional information on the teeth of the patient obtained by the operator in this way, the position information of the light output unit 100 detected by the phase detection unit 300 and the oral scanner (1) detected through the acceleration detection unit 700 ) Is input through the image information acquisition unit 600, respectively, the image information acquisition unit 600 matches all of them to calculate a three-dimensional scanning model for the patient's teeth.

Referring to FIG. 9, for example, the operator performs a scanning operation on a tooth and then, after the scanning operation on the first tooth N1 (a state), moves to a second tooth N2 (b state). When shaking occurs in the oral cavity scanner 1 during the scanning operation, the first and second teeth N1 and N2 are not processed, but the data is processed in a partially cut form.

When the data control module 900 of the present invention performs registration using the image information and the acceleration information of the first and second teeth N1 and N2 partially cut as described above, the registration tooth (c state) is illustrated. Since a scanning model of) is generated, a scanning model of a tooth having excellent precision is generated regardless of shaking and positional movement that may occur during scanning of the tooth.

The operator performs as follows to scan the entire area of the mouth or the plurality of teeth placed in the maxilla of the patient.

Referring to FIG. 10, the operator draws the oral scanner 1 to the outside of the patient's mouth, and then pulls out the insert 1b to the outside of the scanner body 1a so that the opening 1e faces upward. After rotating the insert 1b, it is used in combination with the tip of the scanner main body 1a.

The insert 1b according to the present invention may be selectively detachably installed at the front end of the scanner main body 1a, or may be installed to be relatively rotatable, in which case the insert at the front end of the scanner main body 1a. As only the portion (1b) is inserted, the operator can check the opening 1e and perform the scanning operation on the teeth disposed in the upper or lower jaw more efficiently.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

1a: Scanner Body
1b: insert
1d: handle
1e: opening
10: object to be measured
100: light output unit
200: phase shift unit
201: seating part
220:
222, 224 link 1, 2
300: phase detection unit
400: second reflecting unit
500: second reflecting unit
600: image information acquisition unit
700: acceleration detection unit
800: guide portion

Claims

A light output unit to which the laser light source is irradiated;
A phase shifter for converting output light output from the light output part into different phases for different times;
A phase detector for detecting position or state information according to the movement of the phase shifter;
A first reflector disposed to face the light output unit and refracting light emitted from the light output unit;
A second reflector disposed to face the first reflector and reflecting light reflected through the first reflector toward an object to be measured disposed in a mouth of a patient;
An image information acquisition unit disposed behind the first reflector and configured to receive reflected light reflected from the object to be measured and convert the received light into two-dimensional image information; And
An oral scanner comprising an acceleration detection unit for detecting an acceleration change while acquiring data on the object to be measured.

The method according to claim 1,
The light output unit,
A light generator for generating laser light;
An oral scanner provided on an upper surface of the light generating unit and including an optical phase change unit for irradiating the laser light to the first reflecting unit in the form of a line.

The method according to claim 1,
Wherein the first reflecting portion comprises:
An oral scanner in which either vapor-coated flat glass or vapor-coated right angle prism or vapor-coated bonded prism is selectively used.

The method according to claim 1,
Wherein the first reflecting portion comprises:
An oral scanner in which either a transflective prism or glass is optionally used.

The method according to claim 1,
Wherein the first reflecting portion comprises:
An oral scanner, characterized in that consisting of the same length and width and length respectively.

The method according to claim 1,
The phase shift unit,
The oral cavity scanner including a moving unit for receiving a rotational or linear movement force through the electromagnetic force generated between the electricity and the magnet to reciprocate the seating portion on which the light output unit is seated.

The method according to claim 1,
The phase shift unit,
An oral scanner comprising a moving unit for receiving a rotational force through the electromagnetic force generated between the electricity and the magnet to rotate the seating portion seated on the light output.

The method according to claim 1,
The phase shift unit,
Receiving a rotational force generated from the motor scanner for oral cavity comprising a rotating shaft for rotating the light output in a fixed position.

The method of claim 6,
The oral scanner,
Oral scanner comprising a guide for guiding the stable movement of the seating portion.

The method according to claim 1,
The phase shift unit,
A belt wound on the outside of the light output part to receive the rotational force generated from the motor and to rotate the light output part in a fixed position;
And an axis of rotation extending toward the outside of the light output portion and provided to rotate in position while the light output portion is rotated by a belt.

The method according to claim 1,
Wherein the second reflecting portion comprises:
The oral scanner for completely refracting the light irradiated through the first reflecting portion to the object to be measured.

The method according to claim 1,
The oral scanner,
Scanning model for the subject to be measured by calculating a plurality of three-dimensional data by calculating the data transmitted from the image information acquisition unit and the phase detector, and matching the three-dimensional data using the data transmitted through the acceleration detection unit Oral scanner, characterized in that for generating.

The method according to claim 1,
The oral scanner,
A scanner body that the operator grips by hand;
And an insert installed at the front of the scanner body and having a second reflecting portion installed at a distal end thereof and inserted into the mouth of the patient.

The method of claim 13,
Said insert comprising:
An oral scanner, which is selectively detachably coupled to the scanner body.

The method of claim 13,
Said insert comprising:
The oral cavity scanner, characterized in that the relative rotation in the longitudinal direction in the state coupled to the scanner body.