KR20190062011A - Apparatus for correcting three dimensional space-angle of drill for dental hand piece and measuring depth of the drilling with single sensor - Google Patents

Abstract

Disclosed is an apparatus for correcting a three-dimensional spatial angle and measuring a drilling depth of a drill for a dental handpiece by a single sensor, which comprises: a housing provided in a fixing portion of the dental handpiece; a sensing unit for measuring an angle of the housing in real time; a calculation unit calculating the three-dimensional spatial angle of a drill blade by correcting an angle measured by the sensing unit with a drill blade angle; a setting unit for setting a reference three-dimensional spatial angle of the drill blade to the three-dimensional spatial angle desired by an operator among three-dimensional spatial angles of the calculation unit; and a display unit for displaying a warning message to notify the same when the three-dimensional spatial angle of the calculation unit is outside a set range of the reference three-dimensional spatial angle. The present invention eliminates the need for a sensor located on teeth of a conventional patient, thereby having an effect for giving more comfortable and stable feeling for a patient when being treated.

Description

Technical Field [0001] The present invention relates to a three-dimensional spatial angle correcting and drilling depth measuring apparatus for a dental handpiece drill by a single sensor,

The present invention relates to a three-dimensional spatial angle correction and drilling depth measuring device for a drill for a dental handpiece by a single sensor, and more particularly, And also to measure the depth of drilling through the position of the drill bit in the X, Y, Z axes.

Generally, a dental handpiece is used for cutting teeth, drilling a hole in a tooth, drilling a hole in an alveolar bone, etc., and a drill bit is rotatably provided at an end thereof.

The demand for accurate dental procedures using these dental handpieces is increasing day by day. Numerous advances have been made to meet these demands for tooth removal and implant placement, which are two axes of modern dental procedures. An accurate dental procedure improves the completeness of the procedure, increases the longevity of the prosthesis, reduces the time required for the procedure, and enables a minimally invasive technique that reduces postoperative complications. The accuracy of the angles is particularly emphasized in abutment formation and casting of the implant.

In order to prevent casting brass from dropping out of function, it is necessary to maintain sufficient resistance and proper resistance form. The amount of retention of the cast restoration is determined by the convergence angle of the tooth eraser, the surface area, and the inner surface roughness of the casting, among which the convergence angle is the primary factor, and the most research has been done. The convergence angle is defined as the angle formed by the extension line of the two opposing axial walls formed on the abutment tooth by tooth erasure. It affects the maintenance of the entire length of the canal, and the optimum convergence angle is between 5 and 12 degrees. In addition, the accuracy of the angle is also important for the best aesthetic results and long life for dental implant placement. The implant placement angle determines the direction of the occlusal force applied to the implant and the retention of the restoration. In particular, when two or more dental implants are implanted, the angle between the various implants plays a decisive role in the function and lifetime of the implants.

On the other hand, the exact angle in the dental procedure is very important, but the conventional dental procedure using the handpiece is less than this importance. This is evident from the study of the angle of convergence of the abutment teeth for casting crowns.

As a result of analyzing the convergence angles of 478 cast metal metal abutments formed in the actual clinic, the actual convergence angle is 21 degrees, and there is a large difference in the convergence angle for each surgeon. Other studies have also supported this fact by reporting that the convergence angle between 14 ° and 20 ° was removed when the abutment was removed in the actual clinical setting. This is a considerable deviation from the ideal value.

This increase in convergence angle results in a decrease in average retention force regardless of the type of cement used. The problem that follows the ceramics fracture (16%) in the fixed prosthesis is the adhesion failure (15.1%) due to lack of retention, which can be prevented by preventing the increase of convergence angle.

Thus, Korean Patent Registration No. 10-1505785 discloses an apparatus and method for correcting a three-dimensional spatial angle of a drill for a dental handpiece.

However, in the case of this prior art document, a first sensing unit is provided in the housing and a second sensing unit is provided in the patient's teeth, which not only inconveniences the patient but also facilitates control by the two sensing units, There are also various problems that the practitioner can not control through two sensing parts.

Further, the present invention further provides a device capable of measuring the depth of drilling through a single sensor installed in the housing, as well as the drill bit position of the X axis, Y axis, and Z axis, .

KR 10-1505785 (2015.03.25)

The present invention relates to a three-dimensional spatial angle correcting device and correction device for a drill for a dental handpiece, which is not limited to a reference body for tracking or measurement equipment such as an additional camera, And it is an object of the present invention to provide an apparatus capable of performing this by using only one sensor while avoiding correction of the angle of a drill with two sensors in the related art.

It is also an object of the present invention to provide a device capable of measuring drilling depth through a single sensor installed in a housing, as well as the drill bit position of the X axis, Y axis, and Z axis.

A three-dimensional spatial angle correction and drilling depth measurement device for a dental handpiece drill by a single sensor is introduced.

To this end, the present invention provides a dental handpiece comprising: a housing; A sensing unit for measuring the angle of the housing in real time; An operation unit for calculating a three-dimensional spatial angle of the drill blade by correcting the angle measured by the sensing unit to an angle of the drill blade; A setting unit configured to set a reference three-dimensional spatial angle of the drill blade at a three-dimensional spatial angle desired by the operator among the three-dimensional spatial angles of the operation unit; And a display unit for displaying a warning message to notify the user when the three-dimensional spatial angle of the operation unit is out of the setting range of the reference three-dimensional spatial angle. .

The housing is detachably mounted on the fixed portion of the dental handpiece, and the housing has a hollow portion to be detachably fitted to the fixed portion of the dental handpiece.

And the housing is integrally formed with the fixed portion of the dental handpiece.

And an anti-vibration member is provided on the inner peripheral surface of the hollow portion.

Wherein the sensing unit is an electronic sensor, and the electronic sensor includes a gyro sensor and an acceleration sensor.

Wherein the display unit transmits the warning message to a wireless or wired communication module, and the communication module transmits the warning message to an external terminal, wherein the display unit displays a message indicating that the drill bit is inclined in the right direction 1 lamp and a second ramp for indicating that the drill bit is inclined downward in the direction of -Y axis and a third ramp for indicating that the drill blade is inclined in the left direction which is the -X axis direction, The first, second, third, and fourth lamps are provided with one set of one or more colors, and the like. .

The housing has a hollow cylindrical shape, and the first, second, third, and fourth lamps are provided as one lamp unit, and the lamp unit has a plurality of .

Wherein the setting unit further includes a switch, wherein when the operator sets the angle of the drill blade and presses the switch, the angle is set to the reference three-dimensional spatial angle, and the switch is provided on the foot plate .

The three-dimensional spatial angle of the drill for a dental handpiece and the drilling depth measuring device using the single sensor according to the present invention can realize the following various effects.

First, there is no reference body for tracking, or additional measuring equipment such as cameras, and the 3D spatial angle of the drill blade of the dental handpiece is not limited by the surrounding environment. It can be corrected to the setting range of the dimensional spatial angle.

Second, miniaturization and simplification can reduce the elements that can interfere with the surgeon, and it is possible to maintain the existing accuracy without being restricted by the surrounding environment factors such as intraoral metal restorations, Use can be intuitive and simple.

Third, although two sensors are required for three-dimensional angle correction of the conventional drill, one sensor installed in the multi-surface housing according to the present invention is effective.

Fourth, there is no need for a sensor located in the teeth of the patient in the past, so that the patient can feel comfortable and stable feeling of being treated.

Fifth, the position of the drill bit on the X axis, Y axis, and Z axis can be known by the operator through a single sensor installed in the housing, thereby enabling various effects such as drilling depth to be measured.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.
Figure 2 is an overall block diagram of the present invention,
3 shows one lamp unit, which is a component of the invention,
Figure 4 is an overall flow chart, even though the present invention is implemented.
Figure 5 is a schematic flow diagram for measuring the depth of drilling through the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, in which a three-dimensional spatial angle of a drill for a dental handpiece is corrected by a single sensor and a drilling depth measuring device.

FIG. 1 is a block diagram showing an overall operation of a drill depth measuring apparatus for correcting a three-dimensional spatial angle of a drill for a dental handpiece by a single sensor according to the present invention, FIG. 2 is a block diagram showing an operating state in which the present invention is implemented, Is a view showing one lamp unit of the display unit which is one component of the present invention.

As shown in FIGS. 1 and 2, the present invention includes a housing, a sensing unit, a computing unit, a setting unit, and a display unit.

The housing is provided on the fixed part of the dental handpiece, the sensing part measures the angle of the housing in real time, and the calculating part calculates the three-dimensional spatial angle of the drill blade by correcting the angle measured by the sensing part with the angle of the drill bit.

In addition, the setting unit sets the reference three-dimensional spatial angle of the drill to a three-dimensional spatial angle desired by the operator out of three-dimensional spatial angles of the operation unit, and the display unit displays the three-dimensional spatial angle of the operation unit outside the set range of the reference three- A warning message is displayed to inform the user of this.

More specifically, it is as follows.

The present invention relates to a dental structure including a hard tissue and a soft tissue structure in the oral maxillofacial region including a tooth 1 of a patient and a jaw (hereinafter, the tooth 1 will be described as an example) Dimensional spatial angle of a drill for a dental handpiece by a single sensor for correcting a three-dimensional spatial angle of a drill blade (11) of a handpiece (10).

At this time, the housing 110 is provided in the fixing part 12 of the dental handpiece 10, and the sensing part 120 and the display part 160 are provided. For example, when the surgeon holds the fixing part 12 of the dental handpiece 10, the housing 110 can be moved to a position where the housing 110 is not covered by the caretaker's hand, for example, And may be provided so as to be positioned in an empty space between the thumb and the index finger when the pencil grip is caught.

That is, the housing 110 may be detachably attached to the fixing part 12 of the dental handpiece 10 or may be integrated with the fixing part 12 of the dental handpiece 10.

Particularly, when the housing 110 is detachably attached to the fixing portion 12 of the dental handpiece 10, the housing 110 can be removed when the dental handpiece 10 is cleaned, It is possible to prevent the electronic devices such as the sensing unit 120 and the display unit 160 provided in the display unit 160 from being shorted by the cleaning material.

Further, the housing 110 may have a hollow portion 111 to be detachably fitted to the fixing portion 12 of the dental handpiece 10, as shown in Fig.

When the dental handpiece 10 is driven, the drill bit 11 provided at the end of the dental handpiece 10 rotates. The sensing unit 120 and the like provided on the housing 110 are not affected by the vibration generated at this time An anti-vibration member (not shown) is preferably provided on the inner peripheral surface of the hollow portion 111.

The sensing unit 120 measures an angle of the housing 110 in real time and may be an electronic sensor and may include a gyro sensor S1 and an acceleration sensor S2 as shown in FIG.

The gyro sensor S1 and the acceleration sensor S2 are used to measure the three-dimensional spatial angle of the handpiece drill. The acceleration sensor S2 measures acceleration relative to gravitational acceleration

And the gyro sensor S1 integrates the measured angular velocity to obtain the rotation distance.

Thus, the angle of the housing 110 can be accurately measured with the basic information for evaluating the three-dimensional spatial angle of the drill blade 11 of the dental handpiece 10.

Also, as shown in FIG. 5, the drill depth of the X-axis, Y-axis, and Z-axis drill blades can be measured through a single sensor installed in the housing.

Preferably, the MPU-6050 module in which the acceleration sensor S2 and the gyro sensor S1 are incorporated together can be used.

Conventionally, in order to measure a head angle of a patient in real time, a separate sensor fixed to a patient's jaw or a tooth requiring no treatment through a mouthpiece or the like was required.

Such a separate sensor is prepared for the case where the patient's head or jaw is moved. When the head or jaw of the patient moves, the angle of the tooth 1 requiring treatment of the patient also changes, It is possible to accurately provide the angle correction value of the drill bit 11 with respect to the tooth 1 through the calculation unit 140 when the measurement is performed accurately.

However, in order to attach such a sensor, a separate mouthpiece must be put on the patient, which may cause inconvenience to the patient due to foreign objects. The present invention can be applied to a device capable of adjusting the three- The present invention has been made in view of the above problems.

More preferably, it is possible to provide a head in which a patient's buttocks can be fixed without a separate sensor.

The arithmetic unit 140 calculates the three-dimensional spatial angle of the drill bit by correcting the angle of the housing 110 measured by the sensing unit 120 with the angle of the drill bit 11.

In other words, the position of the drill bit on the X axis, Y axis, and Z axis can be known through a single sensor installed on the housing in a three-dimensional angle, and furthermore, the depth of drilling through the X axis, Y axis, Can be measured.

At this time, the three-dimensional spatial angle of the drill blade can be calculated by correcting the measurement values obtained by the sensing unit 120 through a correction algorithm such as a Kalman filter algorithm.

The setting unit 150 sets a reference three-dimensional spatial angle of the drill blade 11 with respect to the tooth 1 at a desired three-dimensional spatial angle of the three-dimensional spatial angle of the calculating unit 140, When the angle of the drill bit 11 is set to a desired angle and then the switch 151 is pressed, the angle can be set to the reference three-dimensional spatial angle.

That is, as shown in FIG. 1, the switch 151 may be provided on the foot plate so as to be pressed by the foot.

However, the present invention can be operated by a switch. However, the present invention is not limited thereto, and a switching function may be performed through a separate device.

The switch 150 and the setting unit 150 may be connected by wire or may be connected through wireless communication though not shown in the figure.

Also, the power source may be applied through a turning portion (not shown) which is rotatably fastened to the rear end of the fixed portion 12 of the dental handpiece 10, as is well known, although not shown.

Meanwhile, the display unit 160 displays a warning message to notify the three-dimensional spatial angle of the operation unit 140 when the three-dimensional spatial angle of the operation unit 140 is out of the setting range of the reference three-dimensional spatial angle.

For example, the display unit 160 may include a wireless or wired communication module 161, as shown in FIG.

The communication module 161 may transmit a warning message to the external terminal 30 such as Google Glass.

As shown in Fig. 3, the display unit includes a first ramp 161 for indicating that the drill bit 11 is tilted to the right in the + X-axis direction, and a second ramp 16 for rotating the drill bit 11 in the downward direction A third ramp 163 for indicating that the drill bit 11 is tilted in the left direction which is the -X axis direction and a third ramp 163 for indicating the drill bit 11 in the + And a fourth ramp 164 for indicating the tilt in the upward direction.

Further, each of the first, second, third, and fourth lamps 161, 162, 163, and 164 may be provided with one set of lamps having one or more colors.

Also, as shown in FIG. 1, when the housing 110 has a hollow cylindrical shape, the first, second, third and fourth lamps 161, 162, 163, And the lamp unit U1 may be provided on the outer circumferential surface of the housing 110 at a plurality of spaced intervals along the circumference thereof.

Also, a light emitting diode (LED) having a first color and a second color can be realized.

On the other hand, in the case of rotating about the Z axis corresponding to the axis of the drill bit 11, even if the handpiece body is moved by the operator, the three-dimensional spatial angle of the handpiece drill does not change, .

Since only the angular information about the X axis and the Y axis is displayed on the display unit 160, it is advantageous in that it is convenient to use and is suitable for clinical use as compared with that displayed together with the Z axis.

An embodiment of the display unit implemented by the present invention will be described as follows.

3 (a), when the reference angle of the drill bit 11 is within the range of the reference angle of the drill bit 11, the first and second drums 11, Second, third, and fourth lamps 161, 162, 163, and 164, the green light included in each lamp can be continuously turned on and displayed.

Therefore, since the green light is turned on in each of the lamps 161, 162, 163, and 164, the operator can easily recognize accurate information about the + X axis, the -X axis, the + Y axis, and the -Y axis have.

3 (b), when the three-dimensional spatial angle of the drill blade 11 deviates from the setting range leaning to the -Y axis, the drill blade 11 is moved in the + Y axis direction opposite to the -Y axis, The red lamp or the like among the fourth ramps 164 provided on the + Y axis is continuously driven and the red lamp 162 of the second ramps 162 provided on the -Y axis is blinked.

Therefore, the operator can tilt the drill bit 11 in the + Y axis, where the red light is steadily on.

The operation example of the display unit can be implemented in the same manner for the remaining X axis.

In another example, the first, second, third, and fourth lamps 161, 162, 163, and 164 may be color-coded, although not shown, If all of them are on, they are in the setting range, and if one of them is blinking, the drill blade 11 may be tilted toward the blinking side.

In addition, if the angle to the Z axis is displayed through a single sensor installed in the housing, the operator can determine the position of the drill bit as well as measure the drilling depth.

Hereinafter, referring to Fig. 4, a method implemented by the present invention will be described.

The method embodied by the present invention comprises the steps of measuring the angle of the dental handpiece in real time, calculating the angle of the drill blade by correcting the angle of the measured dental handpiece with the angle of the drill blade, A step of setting a reference three-dimensional spatial angle of the drill bit at a desired three-dimensional spatial angle of the spatial spatial angle, and a step of warning to notify the calculated three-dimensional spatial angle if the calculated spatial spatial angle deviates from the reference three- .

Further, the operator further includes a step of measuring the depth of the drill through which the operator knows the position of the drill bit on the X-axis, the Y-axis, and the Z-axis through one sensor installed in the housing.

Specifically, it is as follows.

The dental handpiece 10 has a tooth structure 1 (hereinafter, referred to as an example of the tooth 1) including a hard tissue and a soft tissue structure of the oral maxillofacial region including the patient's teeth 1 and jaws Dimensional spatial angle of the drill for a dental handpiece to correct the three-dimensional spatial angle of the blade 11, the angle of the dental handpiece 10 is first measured in real time (S110).

For example, the gyro sensor S1 and the acceleration sensor S2 can be provided as one set and provided at respective positions, respectively.

The gyro sensor S1 and the acceleration sensor S2, which measure the angular speeds of the three axes, measure the relative acceleration with respect to the gravitational acceleration, and integrate the measured angular velocity to obtain the rotational distance.

Thus, the angle of the housing 110 can be accurately measured with the basic information for evaluating the three-dimensional spatial angle of the drill blade 11 of the dental handpiece 10.

For example, an MPU-6050 module in which the acceleration sensor S2 and the gyro sensor S1 are incorporated together can be used.

Then, the three-dimensional spatial angle of the drill blade 11 is calculated by correcting the angle of the measured dental handpiece 10 (that is, the angle of the housing 110) with the angle of the drill bit 11 (S120) .

For example, the three-dimensional spatial angle of the drill blade 11 can be obtained by correcting the measured values obtained respectively by the gyro sensor S1 and the acceleration sensor S2 through a correction algorithm such as a Kalman filter algorithm .

In order to correct the angle of the dental handpiece 10 by measuring the angle of the dental handpiece 10 in real time in the calculating step S120 and by using the angle of the drill blade 11, the following determinant may be used.

(The positions of the drill bit, x ', y', and z 'are the positions of the fixed portions of the dental handpiece, and θ is the length of the fixed portion extending in the longitudinal direction of the fixed portion) An imaginary first line and an imaginary second line perpendicular to the drill bit) can be used.

The reference three-dimensional spatial angle of the drill blade 11 with respect to the tooth 1 is set at a desired three-dimensional spatial angle of the calculated three-dimensional spatial angle (S130).

For example, the operator can set the angle of the drill blade 11 to a desired angle, and then press the switch 151 of the foot setting unit 150 to set the angle to the reference three-dimensional spatial angle.

If the computed three-dimensional spatial angle deviates from the set range of the reference three-dimensional spatial angle, a warning message may be displayed (S140). When the three-dimensional spatial angle deviates to the right direction which is the + X axis direction and is out of the setting range of the reference three-dimensional spatial angle, it is displayed to be inclined to the left direction which is the -X axis direction, Axis direction to be inclined upward in the + Y-axis direction when the three-dimensional spatial angle deviates from the reference range of the reference three-dimensional spatial angle, and is shifted to the left-direction in the -X-axis direction so that the three- Axis direction. If the three-dimensional spatial angle deviates upward in the + Y-axis direction, it is displayed in the -Y-axis direction when the spatial spatial angle deviates from the reference spatial spatial angle setting range. It can be displayed to be inclined downward.

More specifically, as shown in FIG. 3A, when the three-dimensional spatial angle of the drill blade 11 is within the reference three-dimensional spatial angle setting range, the first and second The third and fourth lamps 161, 162, 163, and 164 may be turned on, and the second color included in each lamp may be continuously turned on and displayed.

Therefore, since the lamp having the second color is turned on in each of the lamps 161, 162, 163, and 164, the operator can easily obtain accurate information about the + X axis, the -X axis, the + Y axis, . 3 (b), when the three-dimensional spatial angle of the drill blade 11 deviates from the setting range leaning to the -Y axis, the drill blade 11 is moved in the + Y axis direction opposite to the -Y axis, The second lamp 162 provided on the + Y axis is continuously tilted, and the fourth lamp 164 provided on the -Y axis is blinked to have a first color Can be displayed.

Thus, the operator may tilt the drill blade 110 with the first color, such as the back light, on the + Y axis. The operation example of the display unit 160 can be implemented in the same manner for the remaining X axis.

Furthermore, the operator can know the position of the drill bit on the X-axis, Y-axis and Z-axis through a single sensor installed in the housing, thereby enabling various effects such as the drilling depth to be measured.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

1: tooth (subject to be treated) 2: tooth (subject to treatment)
10: Dental handpiece 11: Drill blade
110: housing 111: hollow
120: sensing unit U1: lamp unit
140: Operation unit 150:
160: Display section 200: mouthpiece
FP: Footstep 30: External terminal
161: Communication module 151: Switch

Claims (8)

A housing provided in a fixed portion of the dental handpiece;
A sensing unit for measuring the angle of the housing in real time;
An operation unit for calculating a three-dimensional spatial angle of the drill blade by correcting the angle measured by the sensing unit to an angle of the drill blade;
A setting unit configured to set a reference three-dimensional spatial angle of the drill blade at a three-dimensional spatial angle desired by the operator among the three-dimensional spatial angles of the operation unit; And
A display unit for displaying a warning message to notify the user when the three-dimensional spatial angle of the operation unit is out of the setting range of the reference three-dimensional spatial angle; A three-dimensional spatial angle correction and drilling depth measurement device for a dental handpiece drill by a single sensor. The method according to claim 1,
Characterized in that the housing is detachably provided on the fixed portion of the dental handpiece and the housing has a hollow portion so as to be detachably fitted to the fixed portion of the dental handpiece. 3-D spatial angle correction and drilling depth measuring device for drill. The method according to claim 1 or 2,
Wherein the housing is integral with the fixed portion of the dental handpiece. 3. The apparatus of claim 2, wherein the housing is integral with the fixed portion of the dental handpiece. The method of claim 2,
And an anti-vibration member is provided on the inner circumferential surface of the hollow portion. 3. The apparatus according to claim 1, wherein the hollow portion has an anti-vibration member. The method of claim 3,
Wherein the sensing unit is an electronic sensor, and the electronic sensor includes a gyro sensor and an acceleration sensor. The three-dimensional spatial angle correction and drilling depth measuring device of the drill for a dental handpiece by a single sensor . The method according to claim 1,
Wherein the display unit is a wireless or wired communication module, and the communication module transmits the warning message to an external terminal,
The display unit includes a first lamp for indicating that the drill blade is inclined to the right direction which is the + X axis direction, a second lamp for indicating that the drill blade is inclined downward in the -Y axis direction, And a fourth ramp for indicating that the drill blade is inclined upward in the + Y axis direction,
Wherein the first, second, third, and fourth lamps are each provided with a set of one or more colors having one or more colors. The three-dimensional spatial angle correction of the drill for a dental handpiece by a single sensor And a drilling depth measuring device. The method of claim 6,
The housing
The first, second, third, and fourth lamps are provided as one lamp unit, and the lamp unit is disposed on the outer circumferential surface of the housing in a plurality Characterized by a three-dimensional spatial angle correction and drilling depth measuring device for a dental handpiece drill by a single sensor. The method according to claim 1,
Wherein the setting unit further includes a switch, wherein when the operator sets the angle of the drill blade and presses the switch, the angle is set to the reference three-dimensional spatial angle, and the switch is provided on the foot plate Dimensional spatial angle of the drill for a dental handpiece by a single sensor.

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