A device for bleaching teeth

Abstract

The application discloses a method and device for bleaching teeth, the method is: (1) applying a whitening agent containing hydrogen peroxide to the surface of teeth; (2) activating the whitening agent by using a composite activation source; wherein the composite activation source comprises superimposed applied halogen light and ultrasonic waves, the halogen light has an illuminance of 170000 lux-290000 lux and a wavelength of 400-650 nm; the center frequency of the ultrasonic waves is 40+ / -1 KHZ. The device has a composite activation source emitting part, which is mainly composed of an LED lamp, a halogen lamp and an ultrasonic wave generator. The application can accelerate the external diffusion rate of hydrogen peroxide through tooth enamel, effectively shorten the bleaching time, improve the comfort of patients in tooth whitening treatment and has a good whitening effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tooth whitening, in particular to a device for bleaching teeth. BACKGROUND

[0002] Tooth bleaching refers to placing a chemical oxidizing bleaching agent on the surface or inside of teeth to chemically react with the teeth to make the color of the teeth themselves whiter. The commonly used bleaching agent on the market at present is mainly a mixture containing hydrogen peroxide. When whitening, hydrogen peroxide releases active oxygen or hydroxyl radicals to crack the coloring molecules containing unsaturated double bonds on the teeth to achieve the bleaching effect. However, since the deep pigments of teeth are very stubborn and difficult to remove, if the effective peroxide content (calculated as H2O2) does not reach a certain solubility, it is difficult to achieve obvious decolorization or bleaching effect in a short time. Moreover, many documents point out that too high concentration of peroxide can cause side effects such as irritation of the gum tissue or tooth sensitivity. In addition, it has been confirmed that even through long-term repeated use of lower concentration of hydrogen peroxide for bleaching, the bleaching effect is very insignificant. Therefore, in clinical practice, in order to save medical resources and reduce the discomfort of patients, the tooth whitening treatment time should be controlled within a suitable range.

[0003] At present, the commercialized tooth whitening technology mainly uses light or heat such as laser, light-emitting diode (LED), plasma arc, etc. as external energy to accelerate the decomposition of hydrogen peroxide. However, while promoting the efficacy of tooth whitening, ultraviolet light, infrared light, etc. can cause excessive increase in temperature in the pulp tissue and thus damage the teeth and cause hypersensitivity and discomfort. In addition, it is well known that ultraviolet rays can cause certain harm to people's health. It has been found through research that visible light (400nm-700nm) is a relatively high-quality and safe activation light source. However, using visible light alone as the activation source does not have a good whitening effect. SUMMARY

[0004] The purpose of the present application is to overcome the defects in the prior art and to provide a method and device for bleaching teeth, which can accelerate the external diffusion rate of hydrogen peroxide through enamel and effectively shorten the bleaching time, improve the comfort of patients during tooth whitening treatment, and achieve good whitening effect.

[0005] In order to achieve the above purpose, the present application provides the following technical solutions:

[0006] A method for bleaching teeth, comprising the following steps:

[0007] (1) applying a whitening agent containing hydrogen peroxide to the surface of the teeth;

[0008] (2) using a composite activation source to activate the whitening agent on the surface of the teeth to bleach the teeth;

[0009] The composite activation source comprises superimposed halogen light and ultrasonic waves, the halogen light has an illuminance of 170000 lux-290000 lux and a wavelength of 400-650 nm, and the ultrasonic waves have a central frequency of 40±1 KHZ.

[0010] Preferably, the halogen light and the ultrasonic waves are further superimposed with LED light, the LED light has an illuminance of 5000 lux-9000 lux, a wavelength of 460-465 nm, and a color temperature of 3000 K.

[0011] Further, the halogen light is further filtered by an optical lens for ultraviolet light and temperature before irradiating the whitening agent, forming a cold light source with a wavelength of 480-520 nm, the cold light source is conducted by a light guide fiber and sequentially superimposed with the LED light and the ultrasonic waves to form the composite activation source.

[0012] Still further, the content of the hydrogen peroxide is 10-35 wt%, and the whitening agent further contains peroxidase for catalyzing the hydrogen peroxide.

[0013] Still further, the surface temperature of the composite activation source is raised by 9-15℃, and the activation time of the composite activation source is 20-35 min.

[0014] A device for bleaching teeth, having a composite activation source emitting part, the composite activation source emitting part comprising a shell with a light-transmitting sheet embedded on the surface, the shell having an LED lamp and a halogen lamp sequentially arranged from near to far at a position opposite to the light-transmitting sheet, and further having an ultrasonic wave generator arranged on one side of the light-transmitting sheet, the LED lamp, the halogen lamp and the ultrasonic wave generator being signal connected to form a composite activation source.

[0015] Preferably, the halogen lamp is signal connected with the LED lamp through a light guide fiber, and further having a heat insulation lens and a light filter lens arranged between the halogen lamp and the LED lamp, the heat insulation lens being used to filter the temperature emitted by the halogen lamp, and the light filter lens being used to filter the ultraviolet light and infrared light emitted by the halogen lamp.

[0016] Preferably, the LED lamp is a blue light patch LED, the halogen lamp is a halogen reflector lamp cup, and the ultrasonic wave generator is an open emission-receiving integrated ultrasonic wave sensor.

[0017] Further, the blue light patch LED has a power of 12w and a voltage of 9-10V; the halogen reflector lamp cup has a power of 100W, a voltage of 12V and a color temperature of 3000K; the open emission receiving integrated ultrasonic sensor has a center frequency of 40±1KHZ.

[0018] Further, the LED lamp emits a wavelength of 460-465nm; the halogen lamp emits a wavelength of 480-520nm.

[0019] Preferably, the ultrasonic generator has a diameter of 9.5-10.5mm and a thickness of 6.5-7.5mm.

[0020] Preferably, the shell is further provided with a cooling fan, which is arranged relative to the light-transmitting sheet and used to adjust the temperature of the composite activation source.

[0021] Preferably, the tooth bleaching device further comprises an arm rod part and a machine body, the end of the arm rod part is fixedly connected with the machine body, the top end of the arm rod part is movably connected with the composite activation source emitting part, the machine body is provided with a control board, and the control board is signal-connected with the arm rod part and the composite activation source emitting part.

[0022] Further, the surface of the machine body is provided with a gear adjusting piece signal-connected with the controller, the gear adjusting piece comprises an H gear, an M gear and an L gear; the LED light intensity of the H gear is 9000lux, the halogen light intensity is 290000lux, and the surface temperature rise is 13-15℃; the LED light intensity of the M gear is 7000lux, the halogen light intensity is 220000lux, and the surface temperature rise is 12-13℃; the LED light intensity of the L gear is 5000lux, the halogen light intensity is 170000lux, and the surface temperature rise is 9-10℃.

[0023] Preferably, the tooth bleaching device further comprises a single whitening component, which is detachably connected with the machine body and used to bleach single teeth.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] (1) the present application adopts composite activation source to activate whitening agent to bleach teeth, wherein the composite activation source is composed of halogen light and ultrasonic wave, first, halogen light with light intensity of 170000 lux-290000 lux and wave band of 400-650 nm has high intensity cold light, which has less harm to human body and teeth compared with infrared and ultraviolet activation sources; second, the present inventor found in research that ultrasonic wave can be used as one of the activation sources of whitening agent, which can utilize cavitation effect of ultrasonic wave and microjet formed by cavitation collapse to rapidly activate whitening agent, and this phenomenon is particularly significant for activation effect of hydrogen peroxide in whitening agent, the whitening agent activated by ultrasonic wave can rapidly release free active oxygen (hydroxyl radical ·OH and superoxide radical HOO-, as shown below), thereby greatly improving the activation reactivity of whitening agent, compared with tooth whitening technology using only light, the present application can more effectively promote diffusion of whitening agent and its active ingredients in teeth, thereby accelerating the whitening process and shortening the treatment time;

[0026]

[0027] Furthermore, the present application selectively uses ultrasonic wave with central frequency of 40±1 KHZ in combination with halogen light with wavelength and light intensity, which can not only achieve the best whitening effect, but also will not cause the phenomenon that the tooth arch form and tooth hard tissue structure are damaged due to temperature rise caused by ultrasonic wave emission to whitening agent colloid or tooth surface, in summary, the composite activation source of the present application can effectively improve the whitening activity of whitening agent, promote release of active ingredients of whitening agent, and improve penetration of active ingredients in teeth, thereby shortening the treatment time and obtaining excellent whitening effect;

[0028] (2) the present application further superimposes LED light with the parameters between halogen light and ultrasonic wave, wherein halogen light is the strongest light source, has high penetration, and is convenient for penetration of whitening gel, superimposition of LED light meets the demand of mild light source for tooth enamel surface whitening, and ultrasonic wave further accelerates surface activity of whitening agent, so that hydrogen peroxide in whitening gel can play the maximum activity, thereby the best whitening effect can be obtained;

[0029] (3) since halogen light has the characteristic of strong penetration, in order to further improve the safety of the present application, the present application further filters ultraviolet and temperature through optical lens before halogen light irradiates to whitening agent, thereby forming cold light source with wavelength of 480 nm-520 nm, so as to eliminate the harm of ultraviolet, infrared and the like to teeth and human body, and combination of LED light also ensures effectiveness of the light activation source of the present application;

[0030] (4) In order to further ensure the whitening effect of the present application, a whitening agent with a content of 10-35wt% of hydrogen peroxide and containing peroxidase for catalyzing the hydrogen peroxide can be selected, because the hydrogen peroxide at this content can achieve obvious decolorization or bleaching effect, and the whitening agent containing peroxidase can greatly improve the whitening effect of the present application, because the ultrasonic wave in the composite activation source as an elastic mechanical wave can affect the catalytic activity of the enzyme to some extent, and the ultrasonic waves of different frequencies have significant differences in the activity of different enzymes. However, the change of ultrasonic parameters can not only improve the catalytic activity of the enzyme, but also can lead to the inactivation of part of the enzyme. In the present application, the inventors found through many experiments that the use of ultrasonic wave with a center frequency of 40±1KHZ can promote the rapid entry of hydrogen peroxide substrate into the catalytic site of peroxidase and the product into the medium, thereby improving the catalytic efficiency of the enzyme. The shock wave generated by the cavitation effect of the ultrasonic wave can change the conformation of the enzyme molecules, thereby improving the progress of the enzyme reaction and greatly improving the catalytic activity of peroxidase. In addition, the inventors found that the use of the whitening technology of the present application can control the surface temperature rise to 9-15℃, and under this condition, the whitening for 20-35min can obtain the best whitening effect within the safe range.

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0032] Figure 1 Structure diagram of the composite activation source emitting part of the present application;

[0033] Figure 2 Structure diagram of the device for bleaching teeth of the present application.

[0034] Explanation of reference signs:

[0035] 1, composite activation source emitting part; 11, shell; 111, light transmission sheet; 12, LED lamp; 13, halogen lamp; 14, ultrasonic generator; 15, light guide fiber; 16, light filter; 17, heat insulation lens; 18, heat dissipation fan; 19, heat insulation cover; 2, arm rod part; 3, machine body; 31, gear adjusting part; 4, single whitening component; 41, support. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0040] It should be noted that the model of the whitening agent used in the following examples is the Max 5 whitening agent provided by Beyond Technology Co., Ltd.

[0041] Example 1

[0042] The present application provides a method for bleaching teeth, comprising the following steps:

[0043] (1) applying a whitening agent containing hydrogen peroxide and peroxidase to the surface of the teeth, wherein the content of hydrogen peroxide is 10wt%;

[0044] (2) using a composite activation source to activate the whitening agent on the surface of the teeth for 20min at a surface temperature of 9℃ to bleach the teeth;

[0045] The composite activation source includes halogen light and ultrasonic waves applied in superposition, the halogen light has an illuminance of 170000lux and a wavelength of 400nm; the center frequency of the ultrasonic wave is 39KHZ. Example 2

[0046] A method for bleaching teeth, comprising the following steps:

[0047] (1) applying a whitening agent containing hydrogen peroxide and peroxidase to the surface of teeth, wherein the content of hydrogen peroxide is 35wt%;

[0048] (2) using a composite activation source to activate the whitening agent on the surface of teeth for 30min at a surface temperature rise of 9℃ to bleach the teeth;

[0049] The composite activation source comprises halogen light, LED light and ultrasonic wave applied in sequence from far to near relative to the whitening agent, the halogen light has an illuminance of 200000lux and a wavelength of 650nm, the LED light has an illuminance of 6000lux, a wavelength of 463nm and a color temperature of 3000K, and the ultrasonic wave has a center frequency of 40KHZ. Example 3

[0050] A method for bleaching teeth, comprising the following steps:

[0051] (1) applying a whitening agent containing hydrogen peroxide and peroxidase to the surface of teeth, wherein the content of hydrogen peroxide is 10wt%;

[0052] (2) using a composite activation source to activate the whitening agent on the surface of teeth for 20min at a surface temperature rise of 9℃ to bleach the teeth;

[0053] The composite activation source comprises halogen light, LED light and ultrasonic wave applied in sequence from far to near relative to the whitening agent, the halogen light has an illuminance of 170000lux and a wavelength of 480nm, the LED light has an illuminance of 5000lux, a wavelength of 460nm and a color temperature of 3000K, and the ultrasonic wave has a center frequency of 39KHZ.

[0054] The composite activation source comprises halogen light, LED light and ultrasonic wave applied in sequence from far to near relative to the whitening agent, the halogen light has an illuminance of 170000lux and a wavelength of 480nm, the LED light has an illuminance of 5000lux, a wavelength of 460nm and a color temperature of 3000K, and the ultrasonic wave has a center frequency of 39KHZ. Example 4

[0055] A method for bleaching teeth, comprising the following steps:

[0056] (1) applying a whitening agent containing hydrogen peroxide and peroxidase to the surface of teeth, wherein the content of hydrogen peroxide is 20wt%;

[0057] (2) using a composite activation source to activate the whitening agent on the surface of teeth for 30min at a surface temperature rise of 12℃ to bleach the teeth;

[0058] The composite activation source comprises halogen light, LED light and ultrasonic wave applied from far to near relative to the whitening agent, the ultraviolet rays and temperature in the halogen light are filtered through an optical lens before irradiating to the whitening agent, a cold light source is formed, the cold light source is conducted through a light guide fiber and sequentially superimposed with the LED light and the ultrasonic wave to form the composite activation source.

[0059] The halogen light has an illuminance of 220000 lux and a wavelength of 500 nm; the LED light has an illuminance of 7000 lux, a wavelength of 463 nm and a color temperature of 3000 K; and the ultrasonic wave has a center frequency of 40 KHZ. Example 5

[0060] A method for bleaching teeth, comprising the following steps:

[0061] (1) applying a whitening agent containing hydrogen peroxide and peroxidase to the surface of the teeth, wherein the content of hydrogen peroxide is 35 wt%;

[0062] (2) using a composite activation source to activate the whitening agent on the surface of the teeth for 35 min at a surface temperature of 15℃ to bleach the teeth;

[0063] The composite activation source comprises halogen light, LED light and ultrasonic wave applied from far to near relative to the whitening agent, the ultraviolet rays and temperature in the halogen light are filtered through an optical lens before irradiating to the whitening agent, a cold light source is formed, the cold light source is conducted through a light guide fiber and sequentially superimposed with the LED light and the ultrasonic wave to form the composite activation source.

[0064] The halogen light has an illuminance of 290000 lux and a wavelength of 520 nm; the LED light has an illuminance of 9000 lux, a wavelength of 465 nm and a color temperature of 3000 K; and the ultrasonic wave has a center frequency of 41 KHZ.

[0065] Example 6

[0066] As shown in Figure 1 The present application provides a device for bleaching teeth, which has a composite activation source emitting part 1, the composite activation source emitting part 1 comprises an outer shell 11 with a light-transmitting sheet 111 embedded on the surface, an LED lamp 12 and a halogen lamp 13 are sequentially arranged from near to far at the position of the outer shell 11 opposite to the light-transmitting sheet 111, an ultrasonic wave generator 14 is further arranged on the outer shell 11 and located at one side of the light-transmitting sheet 111, and the LED lamp 12, the halogen lamp 13 and the ultrasonic wave generator 14 are signal connected to form the composite activation source.

[0067] The present application can effectively improve the whitening activity of the whitening agent, promote the release of the active ingredient of the whitening agent, and improve the penetration of the active ingredient in the teeth, thereby shortening the treatment time and obtaining excellent whitening effect. The device has a composite activation source emitting part 1, which is composed of a light activation source and an ultrasonic wave, and the light activation source is composed of an LED lamp 12 and a halogen lamp 13. The halogen lamp 13 is the strongest light source and is arranged at the position farthest from the light-transmitting sheet 111, has high penetration, and facilitates the penetration of the whitening gel. The LED light 12 is arranged before the halogen lamp 13 to meet the demand of the moderate light source for the whitening of the tooth enamel surface. The arrangement of the ultrasonic wave generator 14 further accelerates the surface activity of the whitening agent, makes the hydrogen peroxide in the whitening gel play the maximum activity, and thus the best whitening effect can be obtained.

[0068] In use, the gingival soft tissue is first protected with a gingival protector, then the whitening agent is applied to the tooth surface, and the device is started to whiten the tooth for 25-35 min.

[0069] The halogen lamp 13 is signal connected with the LED lamp 12 through a light guide fiber 15, the light guide fiber 15 has 200,000 roots, can reduce the energy consumption of the halogen light 13, has high-fidelity transmission of light, and is convenient to install and use. Since the light emitted by the halogen lamp 13 has the characteristic of strong penetration, in order to further improve the safety of the present application, the ultraviolet rays, infrared rays and temperature are filtered through a filter lens 16 and a heat insulation lens 17 before the halogen lamp 13 irradiates the whitening agent, forming a cold light source with high intensity, which has less harm to the human body and teeth compared with the activation sources of infrared rays and ultraviolet rays, and cooperates with the LED light to ensure the effectiveness of the light activation source of the present application. In the present embodiment, the LED lamp 12 selects a blue light patch LED, the halogen lamp 13 selects a halogen reflector lamp cup, and the ultrasonic wave generator 14 selects an open type emission-receiving integrated ultrasonic wave sensor. The power of the blue light patch LED is set to 12w, and the voltage is set to 9-10V. The power of the halogen reflector lamp cup is set to 100W, the voltage is set to 12V, and the color temperature is set to 3000K. The center frequency of the open type emission-receiving integrated ultrasonic wave sensor is set to 40±1KHZ, which can ensure that each component generates a suitable wavelength band, and the ultrasonic wave with a center frequency of 40±1KHZ, combined with the halogen light 13 and the LED lamp 12 with the wavelength and illuminance, can not only achieve the best whitening effect, but also will not damage the dental arch form and the structure of the hard tissue of the teeth due to the heating caused by the emission of the ultrasonic wave to the whitening agent gel or the tooth surface.

[0070] In addition, in this embodiment, the diameter of the ultrasonic generator 14 is set to 9.5-10.5mm and the thickness is set to 6.5-7.5mm, so that it can closely match the treatment range of 16-20 anterior teeth and premolars in the upper and lower jaws of the human body, and achieve the optimal working range.

[0071] To further prevent excessive surface temperature rise of the composite activation source, which could cause dehydration and demineralization of the tooth surface and irritate the dental pulp, leading to tooth sensitivity, this invention also includes a cooling fan 18 on the outer casing 11. The cooling fan is positioned relative to the light-transmitting sheet to regulate the temperature of the composite activation source, further ensuring that the surface temperature rise of the emitting part of the composite activation source is controlled within 9-15°C. To ensure the performance of this invention and provide the user with the best tactile experience, a heat insulation cover 19 is also provided on the inner wall of the outer casing 11. The heat insulation cover further enhances the safety of this invention.

[0072] Of course, such as Figure 2 As shown, the device for whitening teeth also includes an arm 2 and a body 3. The end of the arm 2 is fixedly connected to the body 3, and the top of the arm 2 is movably connected to the composite activation source emitting unit 1. The body 3 is equipped with a control board (not shown in the figure), which is signal connected to the arm 2 and the composite activation source emitting unit 1 respectively. The surface of the body 3 is provided with a gear adjustment component 31 that is connected to the controller signal. The gear adjustment component 31 can be a touch key of the LCD screen or a knob-type adjustment component. In this embodiment, a touch key is used, which includes H gear, M gear and L gear buttons. The LED illuminance of the H gear is 9000 lux, the halogen illuminance is 290000 lux, and the surface temperature rise is 13-15℃. The LED illuminance of the M gear is 7000 lux, the halogen illuminance is 220000 lux, and the surface temperature rise is 12-13℃. The LED illuminance of the L gear is 5000 lux, the halogen illuminance is 170000 lux, and the surface temperature rise is 9-10℃.

[0073] The gear adjusting member 31 controlled by the controller sets multiple gears because the selection of different gears is made by a dental professional according to the reasons for tooth discoloration of the treated person, the degree of tooth discoloration, and the condition of the tooth hard tissue, so as to obtain the best whitening effect and avoid the occurrence of tooth sensitivity. The three-gear setting of the parameters of the blue light patch LED and the halogen lamp is a definition of the safety and effect range. If the parameters are too high, the temperature of the light source will be increased, the tooth surface will be dehydrated and demineralized, the pulp will be stimulated to cause tooth sensitivity, and conversely, if the parameters are too small, the illumination will be insufficient, and the catalytic effect on the whitening agent will not be obvious. If the ultrasonic wave parameters are too high, the temperature of the colloid and the receiving surface will be increased, the activity of the whitening agent hydrogen peroxide and catalase will be reduced, and if the parameters are too small, the catalytic effect will not be obvious. In addition, the tooth whitening device can also be provided with a single whitening component 4 which is detachably connected to the machine body 1 through a support 41, and is used for whitening a single tooth.

[0074] In order to evaluate the whitening effect of the present application and the effect of the technology on the diffusion of hydrogen peroxide into the enamel, the experimental effect of the present application is given below:

[0075] Experimental method:

[0076] 1. 54 enamel discs with a diameter of 5x7mm and a thickness of 1.0mm were prepared from oxen teeth sterilized with ethylene oxide;

[0077] 2. In order to evaluate the whitening effect of the present application, half of the enamel discs (i.e. 27) were immersed in a warm coffee solution (55℃) for 24 hours, washed for 30s and stored in distilled water to obtain discolored enamel samples. The enamel samples were divided into three groups. The first group was treated with a whitening agent containing 35wt% H2O2 without activation source (GEL); the second group was treated with a whitening agent containing 35wt% H2O2 and 480-520nm cold light (i.e. halogen light) (GEL / LT); and the third group was treated with a whitening agent containing 35wt% H2O2, 480-520nm cold light (i.e. halogen light) and 40KHz ultrasonic waves (GEL / LT / US). The whitening effect of the three groups was measured in the CIE Lab color space at 5min, 15min, 30min, 45min and 60min by a spectrophotometer (Olympus CrystalEye), and the results are shown in Table 1.

[0078]

[0079] 3. To assess the diffusion effect of H2O2, the remaining 27 enamel discs were divided into 3 groups and placed in artificial pulp cavities, surrounded by wax, in 12-well sterile cell culture plates containing 1.0 ml acetate buffer and set up as described above for the three groups of experiments. The exposed enamel surface was treated with GEL, GEL / LT and GEL / LT / US for the three groups of experiments, respectively, and 50 μl of acetate buffer was collected at 5, 15, 30, 45 and 60 min, respectively, to determine the concentration of H2O2 (μg / ml) in each treatment group using spectrophotometry with white crystalline violet as a substrate and horseradish peroxidase as a catalyst. The color change (ΔΕ) and H2O2 diffusion were compared among the three groups using ANOVA and post hoc PLSD tests. The results are shown in Table 2.

[0080]

[0081] As can be seen in Tables 1 and 2, there was no significant difference in ΔE among the three groups at 5 min, but ΔE was statistically significantly higher in GEL / LT and GEL / LT / US than in GEL at 15 min, and in GEL / LT / US than in GEL and GEL / LT at 30, 45 and 60 min. It took 30 min for ΔE to reach 17.5 in the GEL / LT / US group, which is equivalent to 10 shade changes (from A4 to A2), whereas it took 60 min in the GEL / LT group (Table 1). The diffusion of peroxide through the enamel was significantly higher in GEL / LT / US than in GEL and GEL / LT at 5 and 10 min. The diffusion of peroxide was significantly higher in GEL / LT and GEL / LT / US than in GEL throughout the experiment (Table 2).

[0082] Thus, the use of ultrasound-assisted enhanced light (i.e., a combined activation source) according to the present application helps to enhance the whitening effect on teeth and to promote the diffusion of H2O2 through enamel in vitro, while reducing the duration of treatment for tooth whitening can potentially reduce adverse effects and improve patient comfort.

[0083] The above description is merely that of a specific implementation of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions readily conceivable by those skilled in the art within the technical scope of the present application disclosed herein should be encompassed within the scope of protection of the present application. Therefore, the scope of protection of the present application should be defined by the scope of protection of the claims.

Claims

1. A device for bleaching teeth, characterized in that The device has a composite activation source emitting part, which comprises a shell with a light-transmitting sheet embedded on the surface, an LED lamp and a halogen lamp arranged in sequence from near to far in the shell opposite to the position of the light-transmitting sheet, and an ultrasonic generator arranged on the shell and located at one side of the light-transmitting sheet, and the LED lamp, the halogen lamp and the ultrasonic generator are signal connected to form a composite activation source; The halogen lamp is signal connected to the LED lamp through a light guide fiber, and a heat insulation lens and a light filter lens are arranged between the halogen lamp and the LED lamp, the heat insulation lens is used for filtering the temperature emitted by the halogen lamp, and the light filter lens is used for filtering the ultraviolet and infrared rays emitted by the halogen lamp; The halogen light emitted by the halogen lamp is filtered by the heat insulation lens and the light filter lens before irradiating to the whitening agent, forming a cold light source with a wavelength of 480-520 nm, the cold light source is conducted through a light guide fiber and superimposed with the LED light emitted by the LED lamp and the ultrasonic wave emitted by the ultrasonic generator in sequence to form the composite activation source; The halogen light has an illuminance of 170000-290000 lux and a wavelength of 400-650 nm; the center frequency of the ultrasonic wave is 40±1 KHZ; The LED light has an illuminance of 5000-9000 lux, a wavelength of 460-465 nm and a color temperature of 3000 K; The composite activation source emitting part is used for activating the whitening agent containing hydrogen peroxide by using the composite activation source; The content of the hydrogen peroxide is 10-35 wt%, and the whitening agent also contains peroxidase for catalyzing the hydrogen peroxide; The surface temperature rise of the composite activation source is 9-15℃, and the activation time of the composite activation source is 20-35 min.

2. The apparatus of claim 1, wherein, The diameter of the ultrasonic generator is 9.5-10.5 mm, and the thickness is 6.5-7.5 mm.

3. The apparatus of claim 1, wherein, A heat dissipation fan is also arranged on the shell and arranged relative to the light-transmitting sheet.

4. The apparatus of claim 1, wherein, The device for bleaching teeth also comprises an arm rod part and a machine body, the end of the arm rod part is fixedly connected with the machine body, the top end of the arm rod part is movably connected with the composite activation source emitting part, and a control board is arranged in the machine body and signal connected with the arm rod part and the composite activation source emitting part.

5. The apparatus of claim 4, wherein, A gear adjusting part signal connected with the control board is arranged on the surface of the machine body, the gear adjusting part comprises H gear, M gear and L gear; the LED light illuminance of the H gear is 9000 lux, the halogen light illuminance is 290000 lux, and the surface temperature rise is 13-15℃; the LED light illuminance of the M gear is 7000 lux, the halogen light illuminance is 220000 lux, and the surface temperature rise is 12-13℃; the LED light illuminance of the L gear is 5000 lux, the halogen light illuminance is 170000 lux, and the surface temperature rise is 9-10℃.

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