JP3232270B2 - Tooth coating equipment and coating agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for coating the surface of a tooth and a coating agent coated on the tooth surface by the coating apparatus, which is suitable for use in cosmetics, treatment and prevention of teeth. It is something.

[0002]

BACKGROUND OF THE INVENTION There is a high demand for improving the tooth surface and whitening the tooth by coating the tooth surface with a substance similar to enamel, but there has been no means to achieve this.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tooth coating apparatus for coating a tooth surface with a substance similar to enamel, and a tooth coating apparatus used in the tooth coating apparatus. To provide a coating agent.

[0004]

In order to achieve the above object, the present invention employs the following technical means. [Claim 1
Means] The tooth coating apparatus is provided with an electromagnetic wave irradiating means for irradiating the surface of the tooth with a coating agent containing a substance constituting the tooth with electromagnetic waves.

According to a second aspect of the present invention, in the tooth coating apparatus according to the first aspect, the electromagnetic wave irradiating means includes a globe light source that emits a global electromagnetic wave including at least a resonance wavelength of a crystalline material constituting the tooth; And a filter that transmits only the resonance wavelength of the constituent crystalline material.

According to a third aspect of the present invention, in the tooth coating apparatus according to the first or second aspect, the electromagnetic waves emitted from the electromagnetic wave irradiating means interfere with each other to irradiate the teeth provided with the coating agent. A device is provided.

According to a fourth aspect of the present invention, in the tooth coating apparatus according to the third aspect, the resonance wavelength of the interference device is a resonance wavelength of a crystalline material constituting the tooth.

According to a fifth aspect of the present invention, in the tooth coating apparatus according to any one of the first to fourth aspects, the electromagnetic wave irradiation means or the electromagnetic wave irradiated from the electromagnetic wave irradiation means is controlled to pulse the electromagnetic wave. And a timing control means for irradiating the tooth with a pulse and controlling the irradiation interval of the pulse electromagnetic wave to a predetermined time.

[Means of Claim 6] The coating agent is applied to the teeth to be irradiated with the electromagnetic wave by the tooth coating apparatus according to any one of Claims 1 to 5, and contains a substance constituting the teeth. It is characterized by the following.

[Means of Claim 7] The coating agent of Claim 6 is characterized by having fluidity containing at least calcium ions and phosphate ions.

[Embodiment 8] The coating agent according to the embodiment 6 or 7 is characterized in that it contains at least hydroxyapatite crystal powder.

[Means of Claim 9] The coating agent of any one of claims 6 to 8 is characterized by containing at least fluorine.

[0013]

Effects of the Invention and Effects of the Invention

[Functions and Effects of Claims 1 and 6 to 8] A coating agent is applied to the surface of a tooth, and the tooth to which the coating agent has been applied is irradiated with electromagnetic waves by an electromagnetic wave irradiating means. In the boundary portion of (1), hydroxyapatite (or a crystal similar thereto) is crystallized (hereinafter, crystallization includes crystal growth) by the substance constituting the tooth contained in the coating agent, and the hydroxyapatite that the tooth has Crystal is also grown. Then, the hydroxyapatite of the tooth is integrated with the hydroxyapatite (or similar crystal) crystallized by the electromagnetic wave, and as a result, a coating layer of hydroxyapatite (or similar crystal) is formed on the tooth surface. Is done.

As described above, since the coating layer is formed on the tooth surface by the substance contained in the coating agent, the teeth can be colored white or the like. In other words, hydroxyapatite (or similar crystals)
By adding a pigment for coloring in addition to the substance to be converted, the surface of the tooth can be colored to an arbitrary color. Alternatively, since a coating layer of hydroxyapatite (or similar crystals) is formed on the tooth surface, the tooth surface is improved, the penetration of acid generated by cariogenic bacteria is prevented, and the prevention of dental caries can be realized. Wear can be suppressed.
Also, cracks or the like generated in the teeth can be filled with hydroxyapatite (or similar crystals).

According to the second aspect of the present invention, since a globe light source that emits a global electromagnetic wave and a filter that transmits only a predetermined wavelength are provided, the electromagnetic wave irradiation means can be provided at low cost.

[Function and Effect of Claim 3] Since the electromagnetic waves emitted from the electromagnetic wave irradiating means are caused to interfere with each other by the interference device to irradiate the teeth with the resonance waves, the resonance electromagnetic waves penetrate into the coating agent and the surface layer of the teeth. Therefore, crystallization of hydroxyapatite (or a crystal similar thereto) at the boundary between the tooth surface and the coating agent can be easily performed, and a coating layer can be formed on the tooth in a short time.

According to the fourth aspect of the present invention, since the resonance wavelength of the electromagnetic wave applied to the tooth is the resonance wavelength of the crystalline substance constituting the tooth, hydroxyapatite (or a crystal similar to this) can be more reliably used. Can be crystallized.

[Function and Effect of Claim 5] When the irradiation interval of a plurality of pulsed electromagnetic waves applied to a tooth is controlled to a predetermined time, a large electromagnetic wave radiation is generated in the tooth irradiated with the electromagnetic waves. The substance contained in the teeth contained in the coating agent is converted into hydroxyapatite (or similar crystals) by the large radiated electromagnetic wave energy, thereby forming a coating. As described above, since large radiant energy is generated in the tooth by the irradiation of the pulsed electromagnetic wave at the predetermined time interval, the irradiation energy of the electromagnetic wave applied to the tooth from the electromagnetic wave irradiation means can be suppressed, and the load of the electromagnetic wave applied to the tooth is reduced. can do.

[Action and Effect of Claim 9] When the electromagnetic wave is irradiated, a part of the apatite constituting the tooth is replaced with fluorine, and the tooth surface can be strengthened.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on three examples and modifications. [Structure of First Embodiment] FIG. 1 is a schematic view of a tooth coating apparatus and a schematic cross-sectional view of a tooth having a coating agent applied to its surface. The tooth coating apparatus includes an electromagnetic wave irradiation unit 1 for irradiating an electromagnetic wave. The electromagnetic wave irradiating means 1 of this embodiment includes a glow bar light source 1a for irradiating a global electromagnetic wave including far infrared rays to infrared rays (including a resonance wavelength of hydroxyapatite), and a resonance wavelength of hydroxyapatite (specifically, 9.6 ± 0.5 μm or 9.
And a filter 1b that transmits only the resonance wavelength of hydroxyapatite to the tooth S to which the coating agent 2 has been applied.

The irradiation amount of the electromagnetic wave irradiation means 1 may be provided so as to be feedback-controlled based on the intensity of the irradiated electromagnetic wave. For example, the radiation of the tooth S may be detected by a temperature sensor such as a HgCdTe sensor, and the irradiation amount of the electromagnetic wave irradiation means 1 may be controlled according to the detected value. Further, the radiation of the teeth S may be received by an image receiving means such as an HgCdTe image sensor, and the image may be displayed on a monitor device.

The coating agent 2 contains a substance constituting teeth. Specifically, in this embodiment, when a resonance electromagnetic wave is applied, apatite crystals are formed or apatite crystals are grown. More specifically,
The coating agent 2 of the present embodiment has some fluidity so that the surface of the tooth S can be easily and thinly applied to the surface of the tooth S. Ca ²⁺ and PO ₄ ^3- are supersaturated in the aqueous solution. And hydroxyapatite crystal powder. Further, a small amount of a coloring agent or a transparent material is used so that the tooth S is not excessively whitened by the coating of the coating agent 2, specifically, a color according to a user's tooth color or a user's preference is obtained. And an adjusting agent for producing the same.

In this embodiment, the coating agent 2 contains Ca
²⁺, PO_Four ^3-And a crystal powder of hydroxyapatite,
An example is shown in which one or each of
Stand up in a container such as a tube.
May be mixed when used.
Then, it may be sequentially applied to the surface of the tooth S. What
The Ca contained in the coating agent 2²⁺, PO_Four ^3-Is
When an electromagnetic wave is given, the aperture
Apatite crystal growth (A)
Or the growth of similar crystals)
Yes, on the surface of tooth S, hydroxyapata of tooth S itself
It is integrated with the site. In addition, coating agent 2
The hydroxyapatite crystal powder contained in
a²⁺, PO _Four ^3-With the surface of the tooth S
Then, it integrates with hydroxyapatite of tooth S itself
It is.

[Operation of First Embodiment] Next, an example of use of the tooth coating apparatus will be described. The coating agent 2 is thinly and uniformly applied to the surface of the tooth S. Then, the electromagnetic wave irradiating means 1 is operated to irradiate the electromagnetic waves emitted from the electromagnetic wave irradiating means 1 to the surface of the tooth S to which the coating agent 2 has been applied. Then, while the coating agent 2 is crystallized, hydroxyapatite (or a crystal similar thereto) is also crystallized on the surface of the tooth S, and the boundary portion between the tooth S and the coating agent 2 is integrated, and as a result, the tooth S Is coated with a coating agent 2.
A plurality of such coating layers may be laminated. In this case, before forming the next coating layer, the surface of the layer coated on the teeth S may be subjected to an appropriate smoothing treatment.

[Effect of the first embodiment] As described above, since the coating layer containing hydroxyapatite (or a crystal similar thereto) is formed on the surface of the tooth S by the coating agent 2, the teeth are colored white or the like. it can. Alternatively, since a coating layer of hydroxyapatite (or a crystal similar thereto) is formed on the surface of the tooth S, the surface of the tooth S is improved, acid resistance is improved, caries can be prevented, and the tooth S is worn. Can be suppressed. Further, cracks or the like generated in the teeth S can be filled with hydroxyapatite (or similar crystals) to prevent dental caries.

[Structure of the Second Embodiment] FIGS. 2 and 3 are schematic diagrams of an electromagnetic interference device. In the first embodiment,
The electromagnetic wave of a predetermined wavelength emitted from the electromagnetic wave irradiation means 1 is
Although the example in which the surface of the tooth S to which the coating agent 2 is applied is directly irradiated is shown, in this embodiment, the electromagnetic wave irradiation means 1 is used.
The electromagnetic wave radiated from the surface is caused to interfere by the interference device 3, and the electromagnetic wave resonated by the interference is radiated to the tooth S provided with the coating agent 2 on the surface.

The interference device 3 uses the Mach-Zehnder type electromagnetic wave interference device shown in FIG. 2 or the Michelson type electromagnetic wave interference device shown in FIG. In addition, the code | symbol M in a figure shows the mirror which reflects an electromagnetic wave, and the code | symbol HM shows the half mirror which transmits a part of electromagnetic wave and reflects a part. Then, the resonance wavelength is adjusted by adjusting the angle of the mirror M or the half mirror HM. In this embodiment, in order to obtain a resonance wavelength in the interference device 3, a laser light generator that irradiates a laser beam of a predetermined wavelength (for example, 633 nm) is used as the electromagnetic wave irradiation unit 1.

The resonance wavelength of the interference device 3 of this embodiment is 9.6 μm (or 9.6 ± 0.2) which is the resonance wavelength of hydroxyapatite constituting the enamel of the tooth S.
(About 5 μm). Then, the surface of the tooth S is irradiated with the resonance electromagnetic wave generated by the interference device 3, and the resonance electromagnetic wave is applied to the coating agent 2 and the surface layer of the tooth S. Note that an incident angle adjusting means for changing the spread angle of the incident electromagnetic wave may be provided in the electromagnetic wave incident portion of the interference device 3. Further, an irradiation angle adjusting means for changing the spread angle of the irradiated electromagnetic wave may be provided in the electromagnetic wave irradiation portion of the interference device 3.

[Effects of the Second Embodiment] By irradiating the teeth S with resonance electromagnetic waves using the interference device 3, the electromagnetic waves penetrate into the coating agent 2 and the surface layer of the teeth S. Therefore, crystallization of hydroxyapatite (or similar crystals) at the boundary between the surface of the tooth S and the coating agent 2 is easily performed, and the coating layer is formed on the surface of the tooth S in a short time and reliably. it can.

Third Embodiment FIGS. 4 and 5 show a third embodiment, and FIG. 4 is a schematic view of a tooth coating apparatus. The tooth coating apparatus includes an electromagnetic wave irradiation unit 1 for irradiating an electromagnetic wave, and a timing control unit 4 for controlling the irradiation timing of the electromagnetic wave irradiated from the electromagnetic wave irradiation unit 1.

The electromagnetic wave irradiating means 1 has a resonance wavelength of hydroxyapatite constituting the enamel of the tooth S.
It emits an electromagnetic wave of 6 μm (or about 9.6 ± 0.5 μm). For example, the glow-bar light source 1a and the filter 1b may be used as in the first embodiment, or the laser may be generated as in the second embodiment. An apparatus may be used. Further, an angle adjusting means for changing the spread angle of the radiated electromagnetic wave may be provided in the electromagnetic wave irradiating part of the electromagnetic wave irradiating means 1.

The timing control means 4 divides the electromagnetic wave irradiated from the electromagnetic wave irradiation means 1 into a first pulse and a second pulse, and irradiates the tooth S with the coating agent 2 thereon. The irradiation interval between the pulse and the second pulse is set to a predetermined time. As means for irradiating the electromagnetic wave radiated from the electromagnetic wave irradiating means 1 in a pulsed manner, a shutter capable of shielding the electromagnetic wave may be used, and the electromagnetic wave may be turned on and off in a pulsed manner by opening and closing the shutter.
Using a switch, a source of electromagnetic waves (global light source 1
a, a laser generator, etc.) may be provided so as to be turned on / off or strongly controlled.

The irradiation interval (predetermined time) of the first pulse and the second pulse by the timing control means 4 starts from approximately 0 and is gradually increased, as shown in FIG. The interval t is set so that the intensity of the radiated electromagnetic wave B generated by the teeth S by the irradiation of the first pulse A1 and the second pulse A2 is maximized. The timing control means 4 irradiates the first pulse A1 and the second pulse A2 at predetermined time intervals so as to continuously perform the process a plurality of times.
May be provided. Of course, the process of irradiating the first pulse A1 and the second pulse A2 at a predetermined time interval may be provided variably in the number of consecutive times when the process is continuously performed a plurality of times.

[Effects of Third Embodiment] As described above, a large radiated electromagnetic wave B is generated from the tooth S by irradiating the first pulse A1 and the second pulse A2 at predetermined time intervals. Due to the energy of the large radiated electromagnetic wave B, the coating agent 2 is crystallized, and at the boundary between the surface of the tooth S and the coating agent 2, hydroxyapatite (or a similar crystal) is crystallized,
The crystallized coating agent 2 and human doxyapatite of the tooth S are integrated, and as a result, the coating agent 2 is coated on the tooth surface. As described above, since the energy of the large radiated electromagnetic wave B is obtained, the irradiation energy of the first and second pulses can be suppressed, and as a result, the heat generation of the tooth S is suppressed and the burden on the surrounding tissue such as the pulp is reduced. can do.

[Modification] In the above embodiment, the improvement of the surface layer of the tooth enamel by the tooth coating apparatus has been described as an example. However, the dentin is exposed when the dentin is exposed on the tooth surface due to hypersensitivity. Irradiation with electromagnetic waves may be used to reinforce the dentin surface layer. In this case, it is needless to say that the dentin tubules are sealed, and the surface of the dentin is enameled, so that it is possible to exert an effect superior to that of the existing hypersensitivity drug. In this case, a coating layer may be laminated to cover the dentin.

The above-described second and third embodiments may be used in combination. That is, an electromagnetic wave irradiating means 1 for irradiating an electromagnetic wave, and an interference device 3 for causing the electromagnetic wave radiated from the electromagnetic wave irradiating means 1 to resonate in a surface portion of the tooth S
And the timing control means 4 for controlling the irradiation timing of the electromagnetic wave irradiated from the electromagnetic wave irradiation means 1, and the irradiation timing of the electromagnetic wave pulse applied to the tooth S by the timing control means 4 may be set to a predetermined time interval.

The coating agent 2 may contain a tooth reinforcing agent such as fluorine. By blending fluorine,
When electromagnetic waves are irradiated, the hydroxyl groups of hydroxyapatite are replaced with fluorine, and the tooth surface is strengthened. CaO, CaCO ₃ , Ca
₃ (PO ₄ ) ₂ , CaHPO ₄ .2H ₂ O, CaC
l ₂ , Ca (OH) ₂ , Ca (NO ₃ ) ₂ , H ₃ P
O ₄ , KH ₂ PO ₄ , (NH ₄ ) ₂ HPO ₄ , NH ₄ H
₂ PO ₄ , NH ₄ OH or the like may be added. Further, a pH adjuster may be added to the coating agent 2. As an example, may be adjusted in such HNO ₃ to acidify, it may be adjusted by etc. NH ₄ of OH to alkalization.

A catalyst for promoting crystallization may be added to the coating agent 2. As an example of the catalyst, gold, silver, platinum, palladium, titanium, or the like may be used, or a catalyst using a caustic means or a polarization technique may be used in combination. When a catalyst is used as described above, tin ion, silane coupling, sol, or a surfactant may be used as a means for depositing the catalyst on the surface after irradiation with electromagnetic waves.

The viscosity of the coating agent is adjusted according to the compounded substance such as low viscosity to high viscosity and the purpose of use. The substance to be added may be in a supersaturated state or may not be saturated (for example, low concentration). Further, it may be used in powder form. As an example, the coating layer may be formed by growing crystals with a liquid coating agent and then sintering the compounded substance with a coating agent having a high viscosity. Of course, a plurality of coating layers may be formed. An absorbing agent that absorbs the irradiated electromagnetic wave may be applied to the surrounding tissue to separate a portion where the coating is performed from a portion where the coating is not performed.

As examples of coating on the tooth S, pits,
It may be used for preventive filling such as fissures. At this time, a coating agent such as apatite may be inserted into pits, fissures, or the like, and irradiated only with electromagnetic waves, or the surface may be closed with a resin or cement after the coating agent is inserted. The irradiation of the electromagnetic wave may be performed a plurality of times. This preventive filling has higher safety than the conventional range sealant, and has remarkably excellent anti-caries properties and durability. Further, it may be used as a repair, capping, and lining for a cavity, an abutment or the like as appropriate.

Although an example using a laser light generator as a means for irradiating the teeth with the electromagnetic waves has been described, other means may be used as long as the teeth can be irradiated with an electromagnetic wave capable of crystal matching. Specifically, laser light, natural light, medium waves such as radio waves, X-rays, and sound waves, and any waves such as ultraviolet light, infrared light, and visible light may be used. Also, a coherent wave or an incoherent wave may be used.
What is the waveform of the electromagnetic wave applied to the tooth, such as a pulse wave, a continuous wave, a burst wave, a sine wave, a triangular wave, a sawtooth wave, a damped oscillation wave, a sin / x wave, an arbitrary waveform, etc. But it is good.

The original wave as the interfered wave may be an electromagnetic wave of any wavelength other than light as long as a target wavelength is obtained,
Further, the irradiation wavelength may be changed as needed according to the properties of the living body or the like. For example, in the case of teeth, the use of wavelengths on the order of 200 nm makes it possible to diagnose at the electronic level, such as skin, gingiva,
Various soft tissues have an absorber of about 6 μm and about 2.7 μm, and can be diagnosed at a molecular level. Under a specific magnetic field, diagnosis at the atomic level is possible. At this time, if the interference wave is a radio wave, an antenna, a waveguide, an electromagnetic field lens, or the like may be used. The infrared light may be received by an antenna. The light source is a global light source, lamp, L
Any light source, such as an ED, suitable for the present invention may be used.

In the above embodiment, the irradiation control means controls the electromagnetic wave irradiation means so that the irradiation electromagnetic wave can be subjected to amplitude modulation,
Irradiation may be performed with frequency modulation or phase modulation. Also,
The frequency (wavelength) may be continuously or intermittently varied by ± Δ. The arrangement of parts such as interference means is freely determined by the operator and is not particularly limited. An interference wave or an electromagnetic wave from an electromagnetic wave generation source may be guided by a waveguide element such as a fiber to irradiate an object such as a living body. At this time, the interference means may be at any position such as mixing and causing interference near the living body. Also, since the fiber in the visible light region is inexpensive, it is convenient if the wavelength before interference can be set in this band. The present device may be attached to a night guard, an occlusal floor, or the like, and used at bedtime. At this time, it is convenient to use a fiber or a battery.

The teeth may be irradiated with at least one or more pulsed electromagnetic waves at appropriate intervals, or may be continuous waves.
Further, the reflected or transmitted electromagnetic wave from the first pulse or the second pulse may be observed, or the phase matching may be adjusted by changing the interval between the first pulse and the second pulse. In addition, the re-radiation may be observed with one pulse,
Re-radiation in each pulse may be compared.

The wavelength of the electromagnetic wave applied to the tooth may be a single wavelength or a plurality of wavelengths. Further, the electromagnetic wave used for the interference may be a plurality of interferences in many directions, a multiplex interference in which a plurality of interference waves are overlapped, or a combination thereof. In this case, it is possible to irradiate a complex tissue with detailed irradiation for each part. The wavelength before the wavelength change may be used for excitation. The waves may be Fourier-combined.

When irradiating a tooth with an interference wave of an electromagnetic wave, any interference wavelength, interference method, and interference device may be used as long as interference can be given to the tooth. In this case, it is easy to control the polarization condition, frequency modulation, irradiation position, and the like. As a result, it is possible to further control the deep reach, and to irradiate from the front and back surfaces or from a considerably oblique position, so that the excitation wavelength can be widened and the reach to the excitation site can be increased.

In the above-described embodiment, the wavelength of the resonance wave generated by changing the interference angle is controlled. However, any one or all of the interfered waves (oscillation waves) may be individually or simultaneously subjected to the frequency and wavelength. May be changed to control the wavelength of the interference wave, or the interference wave may be controlled using a diffraction grating or a birefringent substance. The optimum excitation wave may be obtained from the reaction of the object, or may be obtained from the setting conditions of the device.

The light (excitation light) reflected by the phase conjugate mirror may be used by irradiating the teeth as electromagnetic waves. Conversely, the radiation light from the object may be reflected by the phase conjugate mirror to the light receiving unit, and the reflected light may be received. Further, heterodyne detection may be employed. In addition to these methods, wavelength conversion by a non-linear crystal may be added to the electromagnetic field generating means and used. In the case of these wavelength converters alone or in combination, the distortion of the electromagnetic wave due to the propagation medium in the propagation path of the electromagnetic wave due to the substance present in the region other than the site where the observation radiation is generated or the refraction material in the air is corrected, or the wavelength change or Transformation occurs favorably near the object (including the surface) and inside.
In the wavelength conversion of the above embodiment, the converted wave has a lower energy value because the wavelength is longer than the original wave.
In these conversion modes, the wavelength may be short, so that the energy value can be increased and used.

If the interfered wave to be interfered with has a wavelength that is more easily transmitted to the object, it is very effective for a digging lesion or a lesion having an undercut. In general, dental caries is often initiated immediately below the surface layer instead of the surface layer. In this case, it is suitable for annealing and diagnosis under such a surface layer. In addition, the polarization of linear, elliptical, and circularly polarized light may be controlled to enhance the deep reach. Linear polarization is advantageous when water-like substances such as from saliva or cutting equipment are present. Further, an optical path may be controlled by appropriately disposing a wave plate to control the polarization. Alternatively, a shutter or the like may be inserted in the optical path to control the irradiation pattern.

Excitation is easily understood as an increase in energy level, but also negative excitation in the direction of lowering the energy of an object is also expressed here. For example, if various waves inside a substance are irradiated with waves that can interfere with them, the energy at a certain position inside the current substance may decrease. In addition, the function of a substance can also be controlled by irradiating various waves inside the substance with waves that can interfere with the various waves. In addition, efficient excitation can be achieved and a predetermined portion can be surely excited. Wavelength conversion means such as these may be employed.

It may be used for polymerization such as photopolymerization, thermal polymerization or chemical polymerization resin. In that case, a high polymerization rate is obtained, and even in a deep part, a polymerization better than surface irradiation is obtained. In general, since the photopolymerized resin in the oral cavity is polymerized at a wavelength that is easy for the eyes, it can be solved by setting the irradiation wave before wavelength conversion to a wavelength that is easy on the eyes by the present apparatus. In the above embodiment, the imaging device is HgCdTe, but CCD, InAs, PbSnTe, PbS, CdS,
It may be used as another image sensor such as CdSe, PzT, LiTaO ₃ , thermopile, bolometer, and the like. A similar effect may be obtained by applying an antenna or the like. The observation wave may be a reflected wave or a transmitted wave.

The waveform detected by the receiving means is subjected to Fourier analysis,
Frequency analysis such as wavelet analysis and correlation analysis may be performed to further improve the accuracy for a specific wavelength. Also, a filter may be used on the receiving means, the subsequent electric circuit, or the analysis computer. In some cases, the receiving means may not be used, and the receiving means may be a wavelength selecting means. The display may be performed by any method such as black and white, color, non-gradation, gradation, or may be provided with a diagnosis and monitoring function such as display with a natural image. Also, it may be used by connecting to another diagnostic device.

In many cases, as the crystal matching progresses, the resonance wavelength shifts. In this case, it is more preferable that the irradiation wavelength is shifted by the irradiation control means in accordance with the shift of the resonance wavelength. Also, a pulse pair or group
Although it has been applied once, a pair or a group that irradiates three or more times may be used. An index or a threshold may be provided for the intensity, a threshold may be provided for a frequency such as a shift of a peak in a phosphate group, a threshold may be provided for Q of resonance, and any one may be selected. Good, or a combination. Further, the shape of the peak may be continuously monitored by the receiving means, and the Q value thereof may be set so as not to exceed a certain threshold value, and feedback may be performed to prevent crystal breakage. This setting includes a method of setting a destruction limit value and a method of feeding back to a maximum Q value.

In the crystal matching using a plurality of pulses, it is considered that the molecular vibration excited by the first pulse is phase-matched (or phase-inverted) by the second pulse, so that more coherency and efficient crystal matching can be achieved. It seems to be. This improves the crystal alignment of teeth and the like, which has not been possible before, ie, physical, chemical and biological properties such as anti-caries, anti-abrasive, anti-destructive, and acid resistance. Further, it may be possible to perform crystal matching by exciting an atom, an electron, a structure other than a molecule, or a crystal structure at a structure structure level. Further, a third pulse may be given when re-radiation occurs after phase matching. At this time, the efficiency is higher because the energy is close to saturation.

In the above embodiment, the resonance peak of the phosphoric acid group was used as an index of the resonance wavelength. However, which resonance peak or what kind of excitation peak was irradiated, or which wavelength such as the maximum or half value of the peak was irradiated. It is up to the operator to determine the irradiation standard, and there is no particular limitation. Further, the tooth is taken as an example, but other tissues or substances may be used. That is, any substance or object may be used as long as it has a crystal structure. Further, if matching equivalent to crystal matching can be obtained, it may be used for matching other structures. That is, the crystal structure is referred to herein as an object that causes these phenomena. The resonance wavelength at the irradiation site of the tooth, which is the irradiation target, may be examined, and the electromagnetic wave may be irradiated according to the wavelength. At this time, the degree of decalcification may be diagnosed based on the wavelength of the examination site, and the degree of the matching treatment may be diagnosed based on the wavelength to determine whether matching has been performed and the time required for matching. If possible, the invention may be applied not only to crystals but also to non-crystalline substances.

The wavelength conversion may be combined for all elements, such as using a combination of several types of wavelength conversion shown in the above-described embodiment or modified example, or may be performed independently for each element. . In addition, it goes without saying that the term "interference" includes undulations and beats when the interference angle is 0 or 180 degrees, and the irradiation angle may be any.

If the irradiation output in the above embodiment and modified examples is further increased, a cutting machine can be obtained. In this case, since cutting can be performed with less energy than a conventional cutting machine, the influence on surrounding tissues is small and the safety for the operator is increased. In this case, it may be used in combination with a destruction agent such as an acid to enhance the effect. Further, the denture reinforcement may be performed by repeating the micro-fracture and the matching or the recrystallization. Of course, an acid neutralizer may be used in combination.

The present invention may be used for efficient cutting and etching using an acid agent such as lactic acid, phosphoric acid, and maleic acid. In addition to atoms such as H ions, a molecule such as an acid releasing H ions may be used as an operator for cutting. Further, depending on the substance, cutting may be performed by adding an alkaline substance. In these cases, a low-concentration solution can be used, so that safety is high and efficient. Of course, tooth quality may be improved by repeating appropriate melting and growth of the coating. Further, the teeth may be etched before coating. The above embodiments or modifications may be implemented individually or in combination. Further, the effect may be further enhanced by combining with an appropriate drug.

[Brief description of the drawings]

FIG. 1 is a schematic view of a tooth coating apparatus and a schematic cross-sectional view of a tooth having a coating agent applied to a surface (first embodiment).

FIG. 2 shows a Mach-Zehnder type interference device (second embodiment).

FIG. 3 is a schematic diagram of a Michelson-type interference device (second embodiment).

FIG. 4 is a schematic view of a tooth coating apparatus (third embodiment);
Example).

FIG. 5 is a time chart for explaining the operation (third chart);
Example).

[Explanation of symbols]

 S Tooth 1 Electromagnetic wave irradiation means 1a Glow bar light source 1b Filter 2 Coating agent 3 Interference device 4 Timing control means

Claims (16)

(57) [Claims] A tooth containing a coating material containing a substance constituting a tooth is irradiated with electromagnetic waves at least on the surface of the tooth.
A tooth coating apparatus comprising an electromagnetic wave irradiating means including a resonance wavelength of a crystalline substance constituting a tooth. 2. A tooth coating apparatus according to claim 1, wherein said electromagnetic wave irradiating means includes: a glow bar light source that emits a global electromagnetic wave including at least a resonance wavelength of a crystalline material forming the tooth; A tooth coating device, comprising: a filter that transmits only a resonance wavelength. 3. The tooth coating apparatus according to claim 1, further comprising an interference device that causes the electromagnetic waves emitted from the electromagnetic wave irradiation means to interfere with each other and irradiates the teeth to which the coating agent is applied. Characteristic tooth coating equipment. 4. The tooth coating apparatus according to claim 3, wherein the resonance wavelength by the interference device is a resonance wavelength of a crystalline material constituting the tooth. 5. A tooth coating apparatus according to claim 1, wherein said tooth coating device controls said electromagnetic wave irradiating means or said electromagnetic wave irradiating from said electromagnetic wave irradiating means to irradiate said teeth with pulses in a pulsed manner. And a timing control means for controlling an irradiation interval of the pulsed electromagnetic wave to a predetermined time. 6. A coating agent comprising a tooth-forming substance applied to a tooth irradiated with electromagnetic waves by the tooth coating apparatus according to any one of claims 1 to 5. 7. The coating agent according to claim 6, wherein the coating agent has fluidity containing at least calcium ions and phosphate ions. 8. The coating agent according to claim 6, wherein the coating agent contains at least hydroxyapatite crystal powder. 9. The coating agent according to claim 6, wherein the coating agent contains at least fluorine. 10. The coating agent according to claim 6, wherein the coating agent contains at least Ca ₃ (PO ₄ ) ₂ . 11. The coating agent according to claim 6, wherein the coating agent is CaO, CaCO ₃ , CaHPO ₄ .2H ₂ O, CaC
l ₂ , Ca (OH) ₂ , Ca (NO ₃ ) ₂ , H ₃ P
O ₄ , KH ₂ PO ₄ , (NH ₄ ) ₂ HPO ₄ , NH ₄ H
A coating agent comprising at least any one of ₂ PO ₄ and NH ₄ OH. 12. The coating agent according to claim 6, wherein the coating agent comprises at least a pigment or a pH adjuster. 13. The coating agent according to claim 6, wherein the coating agent comprises at least a catalyst for promoting crystallization. 14. A tooth coating apparatus according to any one of claims 1 to 5, further comprising a receiving means for detecting a reflected wave or a transmitted wave from the tooth irradiated with the electromagnetic wave. Tooth coating device. 15. A tooth coating apparatus according to claim 1, wherein said electromagnetic wave irradiating means is controlled to modulate amplitude, frequency or phase with respect to the radiated electromagnetic wave. Or a irradiation control means having a function of irradiating a tooth with a constant or intermittently variable frequency. 16. A tooth coating apparatus according to any one of claims 1 to 5, and 14 to 15, further comprising: a polarizing means for polarizing light as electromagnetic waves applied to the teeth. A tooth coating apparatus, further comprising: