阅读说明：本技术 一种牙齿种植体的三维探测和定位方法 (Three-dimensional detection and positioning method for dental implant ) 是由 郭丹 张倜然 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种牙齿种植体的三维探测和定位方法,用于探测测牙龈内的种植体。本发明涉及的牙齿种植体探测装置包探测传感器、和软硬件控制装置等,探测传感器由前端的螺线型线圈和尾端的电极构成,当其感应到埋藏在牙龈内的金属种植体时,通过线圈的电感量发生了变化,振荡电路频率随之变化以达到探测和定位效果。能够通过对佩戴种植体的顶部、种植体埋在牙龈的外侧、牙龈的内侧等三个维度进行探测,并能快速地定位牙龈内部是否有种植体和种植体的准确位置,不仅能够方便种植医生的精准定位患者口腔内的种植体,也能减少患者经济负担和减少对人体的伤害。(The invention discloses a three-dimensional detection and positioning method of a dental implant, which is used for detecting the implant in a gingival. The tooth implant detection device comprises a detection sensor, a software and hardware control device and the like, wherein the detection sensor consists of a spiral coil at the front end and an electrode at the tail end, and when the detection sensor senses a metal implant buried in gum, the inductance of the coil is changed, and the frequency of an oscillation circuit is changed along with the change of the inductance, so that the detection and positioning effects are achieved. Can bury three dimensions such as the outside of gum, the inboard of gum through top, the planting body to wearing the planting body and survey to can fix a position the inside accurate position whether have planting body and planting body of gum fast, not only can make things convenient for the planting body in accurate location patient oral cavity of doctor, also can reduce patient's economic burden and reduce the injury to the human body.)

1. A three-dimensional detection and positioning method of a dental implant is characterized in that,

turning on an instrument switch, enabling a detection sensor to oscillate at a natural frequency, if detecting a mandibular implant, not needing to rotate the detection sensor, if detecting the maxillary implant, firstly rotating the detection sensor by 180 degrees, then gradually approaching the vicinity of a gum embedded with the implant from the right above, during the approaching process, gradually increasing the oscillation frequency of the detection sensor, gradually increasing the indication number of an instrument panel, then performing micro-movement, and when the oscillation frequency reaches more than 2.5MHz, lighting an instrument indicator light and simultaneously performing positioning marking from the top; and then the detection sensor is rotated by 90 degrees and 270 degrees, the implants are detected from the outer side and the inner side of the gum respectively, the marks are positioned in front of and behind the gum, and finally the implants buried in the gum are accurately positioned by 3 mark points.

2. The method for three-dimensional detection and positioning of dental implants according to claim 1, characterized in that the metal implants are detected from different orientations:

when the detection device rotates by 0 degree for detection, the direction of the magnetic field is parallel to the direction of the gum and vertically faces downwards, and the implant of the lower jaw is detected;

when the device rotates 180 degrees for detection, the direction of the magnetic field is parallel to the direction of gum and is vertically upward, and the implant of the upper jaw is detected;

when the implant is rotated by 90 degrees and detected from the outer side of the gum, the direction of the magnetic field is vertical to the gum inwards, and the implant on the outer side of the upper jaw or lower jaw gum is detected;

when the implant is rotated by 270 degrees and detected from the inner side of the gum, the direction of the magnetic field is perpendicular to the gum and outwards, and the implant on the inner side of the upper jaw or the lower jaw gum is detected.

3. The method for three-dimensional detection and positioning of a dental implant according to claim 1,

the positioning method comprises the following steps:

step 1, when the implant is not detected, stabilizing the frequency f of an LC oscillating circuit at 2.0-2.3 MHz and stabilizing the magnetic induction intensity B at 0.245-0.250 mT;

step 2, when the implant is detected, the relationship between the frequency f (MHz) of the LC oscillating circuit and the magnetic induction intensity B (mT) is as follows: f = 13.66/[1 + (B/0.05)^-0.71] - 7.40；

Step 3, when the center of the implant is approached, the relationship between the frequency f (MHz) of the LC oscillating circuit and the magnetic induction intensity B (mT) is as follows: f = -0.25/[ 1 + (B/0.29)^-26.82 ] + 2.41；

And 4, stabilizing the frequency f of the LC oscillating circuit at 2.5-2.6 MHz and stabilizing the magnetic induction intensity B at about 0.303-0.310 mT when the central position of the implant is positioned.

4. The method for three-dimensional detection and positioning of a dental implant according to claim 3,

the LC oscillating circuit consists of a coil and a capacitor of the detection sensor, when the LC oscillating circuit is close to an implant in a gum and penetrates through the gum with the thickness of 2.5mm-3mm, the inductance of the coil changes, the frequency of the oscillating circuit changes along with the change, and the transmission distance s (mm) and the frequency f (MHz) of the LC oscillating circuit meet the following requirements:

s = 1.57e^0.05f + 1。

5. the method for three-dimensional detection and positioning of a dental implant according to claim 1, wherein: the three-dimensional detection device of the dental implant comprises a detection sensor (2) and a control device (1) connected with the detection sensor, wherein the detection sensor (2) rotates around the control device (1), and the detection sensor (2) consists of a spiral coil (21) at the front end and an electrode (22) at the tail end;

the detection sensor (2) is also arranged in the jack (11) of the control device (1) through the plug end (23), and the electrode (22) and the plug end (23) are integrally formed or movably connected.

6. The method for three-dimensional detection and positioning of a dental implant according to claim 5, wherein:

the plug end (23) is of a cylindrical hollow structure and is internally provided with a cable, and a limit boss (231) is arranged at the 0-degree position of the plug end (23); the outer side of the insertion end (23) is coated with a rhombic spring piece (232), the spring piece (232) is fixed in the insertion hole (11) through a limiting step (111) on the inner wall of the insertion hole (11), and the insertion hole (11) further comprises positioning grooves (112) for accommodating four corners of the rhombic spring piece (232); the included angle between the limiting steps (111) is 90 degrees.

7. The method for three-dimensional detection and positioning of a dental implant according to claim 5, wherein:

the detection sensor (2) rotates by 0-270 degrees around the control device (1), and the degree of rotation is 90 degrees each time; namely, the detection sensor (2) rotates in the control device (1) from 0 degrees to 90 degrees, 90 degrees to 180 degrees, and 180 degrees to 270 degrees.

8. The method for three-dimensional detection and positioning of a dental implant according to claim 5, wherein:

the length of the detection sensor (2) is 34mm to 36mm, the maximum width is 6mm, and the thickness is 1 mm.

9. The method for three-dimensional detection and positioning of a dental implant according to claim 5, wherein:

the front and back surfaces of the front end of the detection sensor (2) are provided with spiral metal coils (21), and the number of the coil loops is 6.

10. The method for three-dimensional detection and positioning of a dental implant according to claim 5, wherein:

the material of the detection sensor (2) is a printed circuit board, i.e. PCBI 1505.

Technical Field

The invention relates to a tooth implant detection and positioning device, in particular to a three-dimensional detection and positioning method of a tooth implant, and belongs to the technical field of electromagnetic sensing.

Background

In the field of modern dental oral medical treatment, dental metal implants are widely used in a large number, and play an irreplaceable role in dental implantation due to good biocompatibility, but as embedded teeth fall off and are displaced, the implants are covered by crowns and gingiva in a wrapping manner, so that accurate positioning of the implants cannot be carried out, and difficulties are provided for subsequent oral treatment. Therefore, the problem of precise positioning of the metal implant in the gum is to be solved before treatment.

Because the dental implant wearing the crown cannot be identified and positioned by naked eyes; the current common method is found by X-ray examination or CT equipment, and the defects of the X-ray examination are that images of anterior tooth areas are overlapped and detailed parts are not clearly displayed. The two-dimensional image cannot judge the specific position implanted in the jaw bone, and the three-dimensional image has certain distortion due to the fact that the two-dimensional image is synthesized through a computer. In addition, long-term exposure to X-rays can cause damage to human organs, particularly the elderly, pregnant women, and children.

Disclosure of Invention

In order to solve the above problems, the present invention is directed to provide a three-dimensional detection and positioning method of a dental implant, which performs implant detection using a frequency variation of an LC oscillation circuit.

The invention is realized by the following technical scheme that an instrument switch is turned on, a detection sensor oscillates at a natural frequency, if a lower jaw implant is detected, the detection sensor does not need to be rotated, if an upper jaw implant is detected, the detection sensor is firstly rotated by 180 degrees, then the detection sensor gradually approaches to the vicinity of a gum embedded with the implant from the right upper side, in the approaching process, the oscillation frequency of the detection sensor is gradually increased, the display of an instrument panel gradually rises, then the instrument panel slightly moves, and when the oscillation frequency reaches more than 2.5MHz, an instrument indicator lamp is lightened, and meanwhile, the instrument indicator lamp is positioned and marked from the upper side. And then the detection sensor is rotated by 90 degrees and 270 degrees, the implants are detected from the outer side and the inner side of the gum respectively, the marks are positioned in front of and behind the gum, and finally the implants buried in the gum are accurately positioned by 3 mark points.

In order to achieve the above object, the present invention provides the following technical solutions, which detect a metal implant from different orientations:

the detection device can rotate 0 degree to detect the implant of the lower jaw; rotating 90 degrees to detect the implant outside the upper jaw or the lower jaw gingiva; rotating 180 degrees to detect the implant of the upper jaw; rotating 270 deg. to detect the implant at the inner gingival side of upper jaw or lower jaw.

When the detection device rotates by 0 degree for detection, the direction of the magnetic field is parallel to the direction of the gum and vertically faces downwards, and the implant of the lower jaw is detected;

when the device rotates 180 degrees for detection, the direction of the magnetic field is parallel to the direction of gum and is vertically upward, and the implant of the upper jaw is detected;

when the implant is rotated by 90 degrees and detected from the outer side of the gum, the direction of the magnetic field is vertical to the gum inwards, and the implant on the outer side of the upper jaw or lower jaw gum is detected;

when the implant is rotated by 270 degrees and detected from the inner side of the gum, the direction of the magnetic field is perpendicular to the gum and outwards, and the implant on the inner side of the upper jaw or the lower jaw gum is detected.

The positioning method comprises the following steps:

step 1, when the implant is not detected, stabilizing the frequency f of an LC oscillating circuit at 2.0-2.3 MHz and stabilizing the magnetic induction intensity B at 0.245-0.250 mT;

step 2, when the implant is detected, the relationship between the frequency f (MHz) of the LC oscillating circuit and the magnetic induction intensity B (mT) is as follows: f = 13.66/[1 + (B/0.05)^-0.71] - 7.40；

Step 3, when the center of the implant is approached, the relationship between the frequency f (MHz) of the LC oscillating circuit and the magnetic induction intensity B (mT) is as follows: f = -0.25/[ 1 + (B/0.29)^-26.82 ] + 2.41；

And 4, stabilizing the frequency f of the LC oscillating circuit at 2.5-2.6 MHz and stabilizing the magnetic induction intensity B at about 0.303-0.310 mT when the central position of the implant is positioned.

When the coil of the detection sensor and the capacitor form an LC oscillating circuit, when the detection sensor is close to an implant in a gum and penetrates through the gum with the thickness of 2.5mm-3mm, the inductance of the coil changes, the frequency of the oscillating circuit changes along with the change, and the transmission distance s (mm) and the frequency f (MHz) of the LC oscillating circuit meet the following requirements:

s = 1.57e^0.05f + 1。

the invention also comprises a three-dimensional detection device of the dental implant, which comprises a detection sensor and a control device connected with the detection sensor, wherein the detection sensor rotates around the control device and consists of a spiral coil at the front end and an electrode at the tail end;

the detection sensor is also arranged in a jack of the control device through the plug-in end, and the electrode and the plug-in end are integrally formed or movably connected.

The plug end is of a cylindrical hollow structure and internally provided with a cable, and a limit boss is arranged at the position of 0 degree of the plug end; the outer side of the insertion end is coated with a rhombic elastic sheet, the elastic sheet is fixed in the insertion hole through a limiting step on the inner wall of the insertion hole, and the insertion hole also comprises positioning grooves for accommodating four corners of the rhombic elastic sheet; the included angle between the limiting steps is 90 degrees.

The detection sensor rotates around the control device by 0-270 degrees, and the degree of rotation is 90 degrees each time; namely, the detection sensor rotates in the control device from 0 degrees to 90 degrees, 90 degrees to 180 degrees, and 180 degrees to 270 degrees.

The length of the detection sensor is 34mm to 36mm, the maximum width is 6mm, and the thickness is 1 mm.

Spiral metal coils are arranged on the front and back surfaces of the front end of the detection sensor, and the number of the loops of the coils is 6.

The material of the detection sensor is a printed circuit board, i.e., PCBI 1505.

The device can detect three dimensions of the top of the implant, the implant embedded outside the gum, the inner side of the gum and the like, and can quickly position whether the implant is in the gum and the accurate position of the implant, so that not only can an implanting doctor conveniently and accurately position the implant in the oral cavity of a patient, but also the economic burden of the patient can be reduced and the injury to the human body can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and as shown in the drawings, only some embodiments of the present application are shown, and other drawings can be obtained by those skilled in the art without inventive efforts.

Fig. 1 illustrates the detection of an intra-gingival implant by 0 ° rotation using the present invention.

Fig. 2 illustrates the detection of an intra-gingival implant by rotating 180 ° using the present invention.

Fig. 3 illustrates the use of the present invention to detect implants 90 deg. from the outer side of the gum.

Fig. 4 illustrates the use of the present invention to detect implants from the inner gingival side at 270 deg..

FIG. 5 is a schematic view of a detection sensor according to the present invention.

FIG. 6 is a schematic view of a detection sensor (including a protective sheath) according to the present invention.

FIG. 7 is a block diagram of the present invention.

Fig. 8 is a schematic view of a detection sensor.

Fig. 9 is a sectional view of a detection sensor.

Detailed Description

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings, which are illustrated in the appended drawings of fig. 1-9.

Referring to fig. 1 to 5, a three-dimensional detection and localization method of a dental implant according to a preferred embodiment of the present invention. The detection device comprises a detection sensor 2 for detection and a control device 1 connected with the detection sensor, wherein the detection sensor is composed of a spiral coil 21 at the front end and an electrode 22 at the tail end.

The principle of the detection device of the invention is as follows: the current through the coil can generate a magnetic field, which can be formed around the coil on the detection sensor when it is close to the metallic implant 3. The magnetic field of the implant 3 interferes with the frequency of the electromagnetic waves generated by the coil on the probe. When the frequency is opposite to the line circle frequency, the oscillation frequency of the coil changes.

The instrument switch is turned on, the detection sensor 2 oscillates with the natural frequency, if the mandibular implant 3 is detected, the detection sensor 2 does not need to be rotated, if the maxillary implant 3 is detected, the detection sensor 2 is firstly rotated by 180 degrees, then the mandibular implant is gradually approached to the vicinity of the gingiva with the implant 3 buried from the right above, in the approaching process, the oscillation frequency of the detection sensor 2 is gradually increased, the indication number of the instrument panel is gradually increased, then the instrument panel is moved slightly, when the oscillation frequency reaches more than 2.5MHz, the instrument indicator lamp is turned on, and meanwhile, the positioning mark is carried out from the upper side. Then the detection sensor 2 is rotated by 90 degrees and 270 degrees, the implants 3 are respectively detected from the outer side and the inner side of the gum, the marks are positioned in front of and behind the gum, and finally the implants 3 buried in the gum are accurately positioned by three mark points.

In order to achieve the purpose, the invention provides the following technical scheme: the device comprises a detection sensor 2 and a control device 1 connected with the detection sensor 2, wherein the detection sensor 2 rotates around the control device 1, and the detection sensor 2 consists of a spiral coil 21 at the front end and an electrode 22 at the tail end;

the detection sensor 2 is also arranged in the jack 11 of the control device 1 through a plug end 23, and the electrode 22 is integrally formed or movably connected with the plug end 23.

The plug end 23 is a cylindrical hollow structure and is internally provided with a cable, and a limit boss 231 is arranged at the 0-degree position of the plug end 23; the outer side of the insertion end 23 is coated with a rhombic spring piece 232, the spring piece 232 is fixed in the insertion hole 11 through a limiting step 111 on the inner wall of the insertion hole 11, and the insertion hole 11 further comprises positioning grooves 112 for accommodating four corners of the rhombic spring piece 232; the included angle between the limiting steps 111 is 90 degrees.

The detection sensor 2 rotates 0-270 degrees around the control device 1, and the degree of rotation is 90 degrees each time; that is, the detection sensor 2 is rotated within the control device 1 within a range from 0 ° to 90 °, 90 ° to 180 °, 180 ° to 270 °.

The detecting sensor 2 has a length of 34mm to 36mm, a maximum width of 6mm, and a thickness of 1 mm.

The front and back surfaces of the front end of the detection sensor 2 are provided with spiral metal coils 21, and the number of the coil loops is 6.

The material of the detection sensor 2 is a printed circuit board, i.e., PCBI 1505.

In a preferred embodiment of the present invention, the coil of the inductive head and the capacitor form an LC oscillation circuit, and when the inductive head approaches the implant 3 in the gum, the inductance of the coil changes, and the frequency of the LC oscillation circuit changes accordingly.

As a preferable aspect of the present invention, the detecting device can detect the implant 3 of the lower jaw by rotating 0 °; rotating 90 degrees to detect the implant 3 outside the lower jaw gum; an implant 3 for detecting the upper jaw is rotated by 180 degrees; the mandibular gingival inner implant 3 is detected by rotating 270 °.

As a preferable scheme of the present invention, when the detection device rotates 0 ° for detection, the magnetic field direction is parallel to the gum direction and vertically faces downward, when the detection device rotates 180 ° for detection, the magnetic field direction is parallel to the gum direction and vertically faces upward, when the detection device detects 90 ° from the outer side of the gum, the magnetic field direction is perpendicular to the gum inward, and when the detection device detects 270 ° from the inner side of the gum, the magnetic field direction is perpendicular to the gum outward.

As a preferred version of the invention, the device is used to probe metal implants from different orientations:

when the implant 3 is not detected, the frequency f of the LC oscillating circuit is stabilized at 2.0-2.3 MHz, and the magnetic induction intensity B is stabilized at about 0.245 mT.

The relationship between the frequency f (MHz) of the LC oscillator circuit and the magnetic induction B (mT) when the implant 3 is detected is: f = 13.66/[1 + (B/0.05)^-0.71] - 7.40

The relationship between the LC oscillating circuit frequency f (mhz) and the magnetic induction b (mt) near the center of the implant 3 is: f = -0.25/[ 1 + (B/0.29)^-26.82 ] + 2.41

When the magnetic induction coil is positioned at the center of the implant 3, the frequency f of the LC oscillating circuit is stabilized at about 2.5MHz, and the magnetic induction intensity B is stabilized at about 0.303 mT.

As a preferred embodiment of the present invention, the detection device is used to detect and locate the implant through a 2.5mm-3mm thick gum (flesh layer). The transmission distance s (mm) and the frequency f (MHz) of the LC oscillating circuit satisfy:

s = 1.57e^0.05f + 1；

the practicality of the detection device is fully proved.

The beneficial effects of the invention are as follows: compared with the CT imaging detection technology in the prior art, the three-dimensional detection and positioning method for the dental implant is simple in structure, convenient and practical, free of distortion in positioning and capable of reducing harm to a human body. In addition, the invention can avoid cross infection on the premise of not contacting with the gingiva, and can conveniently and rapidly position the position of the implant covered by the gingiva wrap, thereby providing reliable information for further diagnosis and treatment.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.