CN112741704B - Plasma jet device for cleaning and/or whitening teeth - Google Patents
Plasma jet device for cleaning and/or whitening teeth Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
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Abstract
The invention relates to a plasma jet device for cleaning and/or whitening teeth, wherein a high-voltage power supply and an air pump are connected with electrodes and used for enabling the electrodes to generate jet; the transformer is connected with the high-voltage power supply and used for adjusting the voltage of the high-voltage power supply so as to regulate and control jet flow generated by the electrode. In the process of jet flow generated by the device, nitrogen, oxygen and a small amount of water vapor in the air are ionized to generate active particles such as N2, O3, OH, ROS and RNS, the active particles are diffused to the surface of the teeth, can be used for removing a biological film of oral bacteria on the false teeth and inactivating the bacteria, and not only can realize quick, flexible and efficient inactivation of oral cavity disinfection and sterilization and improvement of the glossiness of the surface of the teeth, but also can realize harmless treatment of the teeth, and is suitable for people of all ages.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a plasma jet device for tooth cleaning and/or whitening.
Background
In daily life, with the intake of tobacco, tea, coffee, cola and the like, stains are left on teeth, and in addition, some people pay no attention to oral hygiene and have no habit of correctly brushing teeth in the morning and evening, so that stains such as soft dirt, tartar, smoke stains, tea stains and the like are gradually accumulated on the surfaces of the teeth. Not only can easily cause diseases in the oral cavity, but also can influence daily social life. According to a literature report, the result of the tooth color dissatisfaction survey shows that the tooth color dissatisfaction among urban population in China is as high as 56.2%.
The research on oral care for tooth whitening has been in the history of more than half a century, and the tooth surface is beautified mainly on the basis of the bleaching effect of strong oxides, but the traditional bleaching method and the emerging laser bleaching technology bring irreversible influence on dental pulp tissues due to the use of high-concentration oxidants and high-temperature light sources, so that the hard tissues of teeth are lost, the sensitivity of decayed teeth is increased, the roughness of the tooth surface is increased, and the possibility of adhesion of dental plaques is further improved. Clinical studies suggest that 18-78% of patients may develop tooth sensitivity after tooth whitening treatment, which brings inconvenience to the patients.
In order to achieve a better tooth color development effect and state, people adopt various methods to sterilize and whiten teeth, and according to different treatment means, the traditional tooth sterilization methods can be roughly divided into a chemical soaking method, a mechanical brushing method and a method of combining soaking and brushing: 1) adopting toothpaste and mouthwash (soda liquid) with sterilization effect to soak and sterilize teeth; 2) brushing and cleaning by adopting a full-automatic cleaning box and matching with a high-pressure water gun or high-temperature steam; 3) the teeth are cleaned using a fully automatic cleaning chamber that incorporates an evaporative agent and an ultraviolet lamp.
The methods increase the brightness of the teeth to a certain extent, prolong the service life of the teeth, have certain sterilization effect on oral cavities, but still have a rising space in the aspects of delaying the aging of the teeth and whitening and sterilizing effects, and mainly have the following reasons: 1) the oral bacteria have stronger viability and certain drug resistance, and the adoption of a milder treatment means ensures the safety of healthy tissues, but also reduces the inactivation rate; 2) the tooth structure is uneven, the gap between false teeth is small, and the existing oral sterilization means is difficult to effectively permeate, so that the tooth damage caused by bacteria can not be radically cured; 3) the conventional treatment method has poor operation convenience, and the popularization and the use of the method are hindered. Therefore, how to clean and whiten teeth flexibly and efficiently is still a pain point problem in modern society.
The atmospheric pressure low-temperature plasma can generate rich high-activity substances such as free electrons, ions, free radicals, excited molecules and ultraviolet photons, can effectively inactivate various pathogenic microorganisms such as bacteria and viruses on the premise of not damaging healthy cells, promotes the growth of the cells, and has wide application value in the biomedical fields such as medical instrument sterilization, cosmetology and the like.
Since 2009, atmospheric pressure low temperature plasma has attracted great interest in the fields of oral sterilization and tooth bleaching because of its characteristics of safety, high efficiency, convenience, etc. Researches prove that active oxygen and active nitrogen are key factors in treatment such as sterilization, wound healing, tooth whitening and the like, so that the active oxygen and the active nitrogen develop more and more extensive application space in the oral clinical field. The low-temperature plasma at low energy density can effectively disinfect and sterilize the oral cavity, and the related mechanisms are as follows: 1) the low-temperature plasma can generate active free radicals in the release process, and the active free radicals react with cell membranes and target proteins of bacteria to destroy the structures of the bacteria so as to kill the bacteria; 2) the low-temperature plasma can generate ultraviolet radiation to destroy genetic materials of bacteria, so that the genetic materials are difficult to proliferate, and the photolysis adsorption can destroy chemical bonds in the bacteria, so that the bacteria are decomposed; 3) the low temperature plasma can destroy bacteria by generating volatile substances through etching. In addition, the low-temperature plasma can penetrate into areas which cannot be reached by conventional treatment operations, such as irregular cavities and cracks, so that oral bacteria can be effectively eliminated, and the effect of whitening teeth is achieved.
Therefore, the plasma jet device for cleaning and/or whitening teeth is designed aiming at the requirements of cleaning and whitening false teeth and combining the advantages of the atmospheric pressure low-temperature plasma biomedical application, and can be used for cleaning and whitening teeth.
Disclosure of Invention
The invention aims to provide a plasma jet device for cleaning and/or whitening teeth, which can quickly, flexibly and efficiently inactivate oral cavity disinfection and improve the surface glossiness of the teeth, can treat the teeth without harm and is suitable for people of all ages.
In order to achieve the purpose, the invention provides the following scheme:
a plasma jet device for tooth cleaning and/or whitening, the device comprising: electrodes, a high-voltage power supply, an air pump and a transformer;
the high-voltage power supply and the air pump are both connected with the electrode and used for enabling the electrode to generate jet flow;
the transformer is connected with the high-voltage power supply and used for adjusting the voltage of the high-voltage power supply so as to regulate and control jet flow generated by the electrode.
Optionally, the electrode includes: the device comprises a ground electrode, a high-voltage electrode and a fixed module;
the ground electrode is connected with the negative electrode of the high-voltage power supply, and the high-voltage electrode is connected with the positive electrode of the high-voltage power supply;
the high-voltage electrode is fixed at the center of the ground electrode through the fixing module;
the fixed module is provided with an air hole;
the ground electrode is also connected with the air pump.
Optionally, the ground electrode and the high-voltage electrode are made of stainless steel.
Optionally, the ground electrode is externally wrapped with high-temperature plastic.
Optionally, the fixing module is made of warm ceramic.
Optionally, the air pump is connected with the electrode through a silicone tube.
Optionally, the high-voltage power supply is a high-voltage pulse power supply or a high-voltage direct-current power supply.
Optionally, the length of the electrode is 10-15cm, and the diameter of the cross section is 8-12 mm.
Optionally, the plasma jet apparatus further comprises: a switching power supply; the switch power supply is connected with the air pump and the transformer.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the plasma jet device for cleaning and/or whitening teeth, the high-voltage power supply and the air pump are connected with the electrodes and used for enabling the electrodes to generate jet flow; the transformer is connected with the high-voltage power supply and used for adjusting the voltage of the high-voltage power supply so as to regulate and control jet flow generated by the electrode. In the process of jet flow generated by the device, nitrogen, oxygen and a small amount of water vapor in the air are ionized to generate active particles such as N2, O3, OH, ROS and RNS, the active particles are diffused to the surface of the teeth, can be used for removing a biological film of oral bacteria on the false teeth and inactivating the bacteria, and not only can realize quick, flexible and efficient inactivation of oral cavity disinfection and sterilization and improvement of the glossiness of the surface of the teeth, but also can realize harmless treatment of the teeth, and is suitable for people of all ages.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a plasma jet apparatus according to the present invention;
FIG. 2 is a schematic view of an electrode portion of the plasma jet apparatus;
FIG. 3 is a schematic diagram of the internal wiring of the plasma jet device;
FIG. 4 is a graph of plasma jet plume temperature over time within 5 min;
FIG. 5 is a schematic flow chart of a first method for cleaning teeth using a plasma jet device;
FIG. 6 is a schematic flow chart of a second method for cleaning teeth using a plasma jet device;
FIG. 7 is a comparison of a denture using a plasma jet apparatus before and after 25min treatment;
1-electrode, 2-high voltage power supply, 3-air pump, 4-silica gel pipeline, 5-switch power supply and 6-transformer;
101-ground electrode, 102-high voltage electrode and 103-fixed module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In this patent document, the drawings discussed below and the embodiments used to describe the principles of the present disclosure are by way of illustration only and should not be construed in any way to limit the scope of the present disclosure. Those skilled in the art will understand that the principles of the present invention may be implemented in any suitably arranged system. Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. Further, a terminal according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements.
The terms used in the description of the present invention are only used to describe specific embodiments, and are not intended to show the concept of the present invention. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it is to be understood that terms such as "comprising," "having," and "containing" are intended to specify the presence of stated features, integers, steps, acts, or combinations thereof, as taught in the present specification, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof. Like reference symbols in the various drawings indicate like elements.
The invention aims to provide a plasma jet device for cleaning and/or whitening teeth, which can quickly, flexibly and efficiently inactivate oral cavity disinfection and improve the surface glossiness of the teeth, can treat the teeth without harm and is suitable for people of all ages.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
As shown in fig. 1 and 2, there is a schematic structural view of a plasma jet apparatus for tooth cleaning and/or whitening according to the present invention, which comprises: the device comprises an electrode 1, a high-voltage power supply 2, an air pump 3, a silica gel pipeline 4, a switching power supply 5 and a transformer 6.
The high-voltage power supply 2 and the air pump 3 are both connected with the electrode 1 and used for enabling the electrode 1 to generate jet flow. The air pump 3 is connected with the electrode 1 through a silica gel pipeline 4.
The transformer 6 is connected with the high-voltage power supply 2 and used for adjusting the voltage of the high-voltage power supply 2 so as to regulate and control jet flow generated by the electrode 1.
The plasma jet device further comprises a switching power supply 5; the switch power supply 5 is connected with the air pump 3 and the transformer 6.
Fig. 2 is a schematic diagram of an electrode part of a plasma jet device, which specifically comprises: a ground electrode 101, a high voltage electrode 102 and a fixed module 103. The ground electrode 101 is connected with the negative electrode of the high-voltage power supply 2, the high-voltage electrode 102 is connected with the positive electrode of the high-voltage power supply 2, and the high-voltage electrode 102 is fixed in the center of the ground electrode 101 through the fixing module 103; the fixed module 103 is provided with air holes; the ground electrode 101 is also connected with the air pump 3 through a silica gel pipeline 4, and the electrode part is supplied with air through a fixing module 103.
The ground electrode 101 and the high-voltage electrode 102 are made of stainless steel; the ground electrode 101 is wrapped with high-temperature plastic; the fixing module 103 is made of warm ceramic.
The high-voltage power supply 2 is a high-voltage pulse power supply or a high-voltage direct current power supply, preferably a high-voltage direct current power supply.
The electrode 1 is 10-15cm in length, 8-12mm in cross section diameter, similar to a pen in size and shape, small, exquisite, portable, and highly flexible and portable.
Fig. 3 is a schematic diagram of internal wiring of the plasma jet device, wherein a high-voltage power supply is connected with the electrodes to provide 220V alternating voltage, and a switching power supply is respectively connected with the air pump and the transformer to provide 220V alternating voltage.
In an actual production process, a plasma jet device can be divided into a plasma jet reactor and a control box body, wherein the reactor is an electrode part, the function of the control box body comprises on-off control of airflow and current and adjustment and conversion of voltage, and an operator can adjust the voltage through the control box body so as to change the length of a jet fluid plume generated by the plasma jet reactor.
The length of the control box body is 20-25cm, the width is 20-25cm, and the height is 15-20 cm.
The high-voltage power supply 2 is positioned at the left rear side of the box body, the module is 5-7cm long, 8-10cm wide and 5-7cm high, the weight is 300-500g, the output power is 50W, and the direct-current voltage of 2-10kV can be generated.
The air pump 3 is positioned at the left front end of the box body, and the module is 10-15cm long, 5-7cm wide and 5-7cm high and is responsible for air supply.
The switch power supply 5 is positioned on the right rear side of the box body, and the module is 5-7cm long, 2-3cm wide and 5-7cm high and is responsible for controlling the on-off of each switch.
The transformer 6 is 1-2cm long, 1-2cm wide and 1-2cm high and is responsible for regulating the voltage.
When the plasma jet device normally works, the main switch, the power switch and the air pump switch are required to be sequentially turned on, and the pressure regulating knob is required to be rotated, so that jet generated by the electrode part is regulated and controlled.
In the process of generating low-temperature plasma jet, nitrogen, oxygen and a small amount of water vapor in the air are ionized to generate active particles such as N2, O3, OH, ROS and RNS, and the active particles are diffused to the surface of teeth and can be used for removing biofilms of oral bacteria on the false teeth and inactivating the bacteria. These active particles also react with the pigmented tissues of the teeth to achieve whitening effect. The pen-shaped structure design of the electrode part is beneficial to improving the transmission efficiency of active particles in plasma, and is convenient for a user to clean the false tooth from various angles. FIG. 4 is a schematic diagram showing the temperature change of plasma jet plume within 5min with time, the length of low-temperature plasma jet generated by the device is 5-10mm, the jet temperature is kept within the temperature range of 35-37 ℃ within 30min, the denture surface can be treated mildly and safely, and H with the concentration of 10-30% is combined2O2The gel can be used for whitening the surface of teeth. The treatment time of each tooth is controlled within 1-20min according to the pigmentation condition of the surface of the tooth during the cleaning or whitening treatment of the tooth, and the emphasis is on visual plaque or tartar, and the treatment time can continuously or indirectly receive the action of oxidizing plasma jet. Meanwhile, the plasma can improve the bonding strength of the surface of the tooth material or the tooth socket and prolong the service life of the device under the condition of ensuring the function of the tooth.
Because plasma jet denture cleaners vary in material, shape and size, the case of plasma jet discharge technology is the protection scope of the method.
FIG. 5 is a schematic flow chart of a first method for cleaning teeth using a plasma jet device; it can be seen that the plasma jet tooth cleaning device of the present invention is used in two stages of tooth pretreatment and tooth cleaning and whitening. Wherein the tooth pretreatment process comprises the following steps: step 101: rinsing with mouthwash, step 102: put into mouth gag, step 103: tooth wiping and step 104: uniformly smearing whitening gel or bacteriostatic soft gel, wherein the tooth cleaning and whitening links comprise: step 201: turning on a main switch, step 202: turning on a power switch, step one 203: turning on an air pump switch, step 204: rotating the pressure regulating knob, step 205: treatment of teeth and step 206: the power is turned off in sequence.
There are two purposes to perform tooth pretreatment: firstly, stains which are easy to take away from the surface of teeth are removed, and a better treatment environment is formed; secondly, the comfortable feeling during the treatment process is increased by coating the gel, and the better tooth cleaning and whitening treatment effects are promoted by the interaction of active particles such as N2, O3, OH, ROS, RNS and the like on gel components.
In the process of rinsing with the mouthwash in step 101, the mouthwash is held in the mouth for 30s to 60s, so that food residues in the oral cavity can be removed, and meanwhile, microbial tartar can be killed, so that a large amount of bacteria in the oral cavity are reduced, and a good oral treatment environment is formed. Step 102, putting in a mouth gag and step 103, wiping teeth to dry the tooth surface, and simultaneously facilitating the handling of the teeth by an operator. The gingiva is protected at the step 104 by evenly applying H2O2 whitening gel or bacteriostatic ointment with a concentration of 15% on the tooth surface. The gel can increase the degree of oral moisture, reduce the discomfort of the oral cavity caused by the air-out of the jet, and simultaneously, the H2O molecules are provided by the gel, so that the concentration of OH and H2O2 in the product can be increased. When the active particles such as N2, O3, OH, ROS and RNS inactivate pigments such as dental plaque and tartar and oral bacteria, the active particles promote the treatment of the pigments and bacteria by gel components, so that the tooth cleaning and whitening effects are faster and better.
In the process of treating teeth, an operator can change the voltage amplitude output by the high-voltage power supply module according to the tooth fouling degree to regulate and control the length of the generated plasma jet and the density of the plasma. The high-voltage power supply module outputs direct-current voltage, the voltage amplitude can be changed within the range of 5kV to 10kV, the power supply power is 50W, and the single processing time is 1-3 minutes. The user can increase the voltage amplitude and the number of active particles containing nitrogen and oxygen generated in unit time to improve the density of the space plasma, thereby improving the sterilization and disinfection speed and the tooth whitening speed.
FIG. 6 is a schematic flow chart of a second method for cleaning teeth using a plasma jet device; it can be seen that the plasma jet tooth cleaning method according to the present invention comprises: step S1: turning on a master switch, step S2: power switch on, step S3: turning on the air pump power supply, step S4: rotating the pressure regulating knob, step S5: judging the jet length S5, and step S6: cleaning teeth, step S7: discrimination teeth cleaning and step S8: and sequentially turning off the power supply for several links. In the sterilization process, a user can change the voltage amplitude output by the high-voltage power supply module 2 according to the tooth fouling degree to regulate and control the length of the generated plasma jet and the density of the plasma. The high-voltage power supply module outputs direct-current voltage, the voltage amplitude can be changed within the range of 5kV to 10kV, the power supply power is 50W, and the processing time is 5 to 10 minutes. The user can increase the density of the space plasma and the sterilization rate by increasing the voltage amplitude and increasing the number of active particles containing nitrogen and oxygen generated per unit time.
Fig. 7 is a comparison of the denture before and after treatment for 25min with a plasma jet device, the denture soaked in normal saline was treated directly with the plasma jet device, and the distance between the discharge device and the surface of the denture was fixed at 3 mm. It was observed that the gloss and the brightness of the tooth surface were remarkably improved when the treatment time was 25 min.
The device can generate low-temperature plasma jet, non-contact cleaning and whitening treatment is carried out on teeth through active substances generated by the plasma and surrounding air, and meanwhile, because the plasma has a modification effect on tooth materials, the hydrophilicity and the adhesion degree of the teeth can be improved, and the service life of the teeth is prolonged.
Compared with the prior art, the invention has the beneficial effects that:
1) compared with the traditional oral spray based on medicinal powder (ointment), the low-temperature plasma containing nitrogen and oxygen particles with high activity can be directly generated to sterilize and disinfect the false teeth, so that the false teeth are treated fundamentally, the accuracy, the durability and the economy of treating false teeth related diseases are improved, the time for preparing medicinal powder is shortened, and the bacteriostasis duration is prolonged.
2) Compared with a high-temperature steam sterilization device, the invention adopts the plasma jet discharge technology and utilizes active particles in low-temperature plasma to sterilize oral bacteria. The low-temperature plasma jet is fast and convenient to generate, when the device is used in the oral cavity, the inner wall of a wound cavity cannot be scalded, and the oral bacteria can be effectively removed and inactivated by a biological film.
3) Compared with the tooth whitening method by matching cold light with whitening gel, the method only adds the low-concentration strong oxide, and the active nitrogen/oxygen particles generated by plasma jet flow act on the teeth, so that pigment tissues on the surfaces and in the deep layers of the teeth are quickly decomposed, the damage to the teeth is small, the treatment time is short, the use comfort is greatly improved, the health of the teeth is ensured, and the method is suitable for people of all ages.
4) Compared with the existing plasma jet, the electrode part of the invention has exquisite design, the shape is similar to a pen, and the size is similar to a scalpel. The box part adopts a small high-voltage direct-current power supply with high integration level, the voltage is adjustable, the flow rate matching degree with the air pump is high, and the portability of the plasma jet source is enhanced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. A method of using a plasma jet device for tooth cleaning and/or whitening, characterized in that the plasma jet device comprises: electrodes, a high-voltage power supply, an air pump and a transformer;
the high-voltage power supply and the air pump are both connected with the electrode and used for enabling the electrode to generate jet flow;
the transformer is connected with the high-voltage power supply and is used for adjusting the voltage of the high-voltage power supply so as to regulate and control jet flow generated by the electrode;
changing the voltage amplitude output by the high-voltage power supply to regulate and control the length of the generated plasma jet and the density of the plasma;
the shape of the electrode is pen-shaped; the electrode includes: the device comprises a ground electrode, a high-voltage electrode and a fixed module; the ground electrode is connected with the negative electrode of the high-voltage power supply, and the high-voltage electrode is connected with the positive electrode of the high-voltage power supply; the high-voltage electrode is fixed at the center of the ground electrode through the fixing module; the fixed module is provided with an air hole; the ground electrode is also connected with the air pump; the ground electrode and the high-voltage electrode are made of stainless steel; the ground electrode is wrapped with high-temperature plastic; the fixing module is made of warm ceramic;
the plasma jet device is used for two links of tooth pretreatment and tooth cleaning and whitening; wherein the tooth pretreatment process comprises the following steps: gargling with mouthwash, putting into a mouth gag, wiping teeth, and uniformly smearing whitening gel or bacteriostatic soft gel; the teeth cleaning and whitening step comprises the following steps: turning on a main switch, turning on a power switch, turning on an air pump switch, rotating a pressure regulating knob, treating teeth and sequentially turning off a power supply;
the length of the low-temperature plasma jet generated by the plasma jet device is 5-10mm, and the jet temperature is kept within the temperature range of 35-37 ℃ within 30 min; combining with 10-30% H2O2 gel to whiten the tooth surface; during the cleaning or whitening treatment of teeth, the treatment time of each tooth is controlled within 1-20min according to the pigmentation on the surface of the tooth, and the whitening treatment is focused on dental plaque or tartar, and the treatment time is continuously or indirectly subjected to the action of oxidizing plasma jet.
2. The method of using a plasma jet device for tooth cleaning and/or whitening according to claim 1, characterized in that the air pump is connected with the electrodes through silicone tubing.
3. The method of using a plasma jet device for tooth cleaning and/or whitening according to claim 1, wherein the high voltage power supply is a high voltage pulse power supply or a high voltage direct current power supply.
4. Use of a plasma jet device for tooth cleaning and/or whitening according to claim 1, characterized in that the electrode has a length of 10-15cm and a cross-sectional diameter of 8-12 mm.
5. The method of using a plasma jet device for tooth cleaning and/or whitening according to claim 1, characterized in that the plasma jet device further comprises: a switching power supply; the switch power supply is connected with the air pump and the transformer.
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