WO2012144505A1 - 口腔洗浄装置および口腔洗浄方法 - Google Patents
口腔洗浄装置および口腔洗浄方法 Download PDFInfo
- Publication number
- WO2012144505A1 WO2012144505A1 PCT/JP2012/060411 JP2012060411W WO2012144505A1 WO 2012144505 A1 WO2012144505 A1 WO 2012144505A1 JP 2012060411 W JP2012060411 W JP 2012060411W WO 2012144505 A1 WO2012144505 A1 WO 2012144505A1
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- cover
- gap
- flow path
- water
- oral cavity
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
- A61C17/0208—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication combined with means providing suction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/041—Controlled or regulated
Definitions
- the present invention relates to an oral cleaning device and an oral cleaning method.
- Dental plaque that adheres to teeth and implant metal surfaces in the oral cavity is known to be a biofilm in which several hundreds of bacteria coexist.
- toothbrushing using a toothbrush or an electric toothbrush is performed in order to clean plaque and the like adhering to teeth and implants in the oral cavity.
- a sufficient cleaning effect is often not obtained with only a toothbrush.
- patients who use implants are prone to periodontal disease because they tend to have plaque, and the practice of preventing periodontal diseases such as brushing to remove plaque is often not appropriate. If these are left untreated, the plaque becomes tartar and periodontal disease and peri-implantitis worsen. Therefore, it is necessary to remove or reduce dirt such as plaque (biofilm) by some cleaning method.
- the maximum discharge pressure is about 0.6 MPa and the pulsating flow can be ejected from a nozzle having a diameter of about 0.5 mm to clean teeth and teeth, but plaque cannot be removed. Therefore, as a method for removing dirt such as plaque and tartar, there has been proposed an ultrasonic vibrator or a method of cleaning by cavitation generated using an ultrasonic vibrator (for example, Patent Document 1 or 2). reference).
- Tooth coloring is pigmentation due to tannin, a pigment component contained in coffee, tea, wine, etc., and tobacco tar.
- teeth are whitened by dentistry.
- free radicals such as hydroxy radicals generated when hydrogen peroxide decomposes are used to brighten and whiten teeth.
- hydroxy radicals are generated by cavitation generated using ultrasonic waves or a venturi tube (for example, see Non-Patent Documents 1 and 2).
- the present invention has been made by paying attention to such a problem, and is an oral cleaning device that can cleanly clean dirt such as dental plaque and tartar even in a narrow space such as a tooth gap or an implant gap. And an oral cleaning method.
- an oral cleaning device has a spray hole, covers the teeth with a gap between the teeth, and is provided so as to hold water in the gap. And a flow path that is attached to the injection hole and communicates with the gap, and is capable of generating cavitation bubbles by water flowing toward the gap through the flow path, and the cavitation bubbles toward the inside of the cover. It has an injection means which injects.
- a cover having an injection hole is provided with a gap between teeth to cover the tooth, water is held in the gap, attached to the injection hole, and communicated with the gap.
- the cavitation bubbles are ejected toward the inner side of the cover by an ejecting unit that has a channel and can generate cavitation bubbles by water flowing in the gap toward the gap.
- the oral cleaning method according to the present invention can be suitably implemented by the oral cleaning device according to the present invention.
- cavitation bubbles can be generated by flowing water at a predetermined flow rate toward the gap between the teeth and the cover in the flow path of the ejection unit. Cavitation bubbles can be generated efficiently by adjusting the flow rate of water flowing through the flow path.
- a cleaning part such as a tooth or an implant inside the cover
- dirt attached to the cleaning part can be cleaned.
- the cavitation bubbles can be applied to the cleaning part inside the cover.
- the mouth cleaning device and the mouth cleaning method according to the present invention dirt such as plaque (biofilm) and tartar composed of oral microorganisms can be cleaned cleanly, and periodontal diseases, peri-implantitis, etc. are effective. Can be prevented. Further, since the deposited particles on the tooth surface can be removed, a tooth whitening effect can be expected. Since free radicals such as hydroxy radicals are generated by cavitation, tooth whitening effect by free radicals can also be expected.
- the mounting angle of the spraying means to the cover is variable or the mounting position of the cover is easily shifted so that cavitation bubbles can be sprayed to any position inside the cover. It is preferable that it is comprised so that it can do.
- the flow path has a small diameter portion having a smaller flow path diameter from the upstream side. Furthermore, it is preferable that the said flow path has an enlarged part in which a flow path diameter is larger than the said small diameter part downstream from the said small diameter part. In these cases, cavitation bubbles can be generated in the small diameter portion. Further, by providing the enlarged portion on the downstream side of the small diameter portion, cavitation bubbles can be efficiently generated even at a low injection pressure.
- the flow path is preferably formed with a curved surface with a smooth inner surface.
- the small diameter portion is preferably provided so that the flow path diameter gradually decreases from upstream to downstream.
- the enlarged portion is provided so that the flow path diameter gradually increases from the small diameter portion toward the downstream. In these cases, water flows smoothly through the flow path, and cavitation bubbles can be efficiently generated with a small flow rate and low injection pressure.
- the flow path has a bent portion that bends at an angle of 60 to 120 degrees on the upstream side of the small-diameter portion, and the upstream side of the bent portion with respect to the bent portion.
- the bent portion since the injection direction of the cavitation bubbles is changed by the bent portion, it is easy to clean the molars and implants in the back of the oral cavity. Also, the back side of teeth and implants can be easily cleaned.
- the bent portion is preferably bent at a desired angle depending on the place to be cleaned. Moreover, you may be comprised so that adjustment to arbitrary angles is possible.
- the cover may have a discharge hole, and may have discharge means for discharging water in the gap from the discharge hole.
- discharge means for discharging water in the gap from the discharge hole.
- dirt such as plaque and tartar dropped from teeth and implants due to cavitation bubbles can be discharged together with water from the gap between the teeth and the cover by the discharging means.
- the water discharged by the discharge means may be discarded or reused by returning to the injection means.
- a filter unit that removes dirt from the water discharged from the discharge hole is provided in the discharge means, and water is circulated between the injection means, the gap between the teeth and the cover, and the discharge means. Is preferred.
- an oral cleaning device and an oral cleaning method that can cleanly clean dirt such as plaque and calculus even in narrow spaces such as tooth gaps and implant gaps.
- FIG. 1A is an observation view showing the result of scanning and cleaning the entire surface of a dental photocurable resin coated with a dental paint for several minutes by the oral cleaning apparatus and oral cleaning method shown in FIG. 1, and FIG. It is an observation figure which shows the state which apply
- FIG. 1A is an observation view showing the result of scanning and cleaning the entire surface of a dental photocurable resin coated with a dental paint for several minutes by the oral cleaning apparatus and oral cleaning method shown in FIG. 1, and FIG. It is an observation figure which shows the state which apply
- FIG. 2 is an observation view showing a result of cleaning a predetermined position of a dental photocurable resin coated with a dental paint by (a) an oral cleaning apparatus and an oral cleaning method shown in FIG. 1, and (b) a result of cleaning by a water jet. is there.
- It is a longitudinal cross-sectional view of the vicinity of a venturi tube which shows the outline
- summary of the experiment which investigates the optimal shape of a venturi tube of the oral cavity cleaning apparatus shown in FIG. 6 is a graph showing the relationship between the magnitude of a cavitation impact force (threshold value F th ) and the occurrence frequency of impact force equal to or greater than the threshold value F th according to the experiment of the oral cavity cleaning device shown in FIG. 5.
- FIG. 1A is a plan view showing a state of a test piece after cleaning when plaque adhering to a test piece having the same surface properties as a dental implant is cleaned by the oral cleaning apparatus and the oral cleaning method shown in FIG.
- the oral cavity cleaning device 10 includes a cover 11, an injection unit 12, and a discharge unit 13.
- the cover 11 is made of a dental thermoplastic resin, and is formed so as to be able to cover two to three teeth 1 with a gap between them.
- the cover 11 is configured such that, when the tooth 1 is covered, the edge portions on the near side and the back side of the tooth 1 are in close contact with the gingiva, and both end portions along the dentition are in close contact with the crown. Thereby, the cover 11 can hold water in the gap between the teeth 1. Moreover, the cover 11 can be easily attached or detached at any position in the oral cavity.
- the cover 11 has an injection hole 11 a and a discharge hole 11 b that communicate with a gap between the tooth 1 and the tooth 1 when the tooth 1 is covered.
- the injection means 12 has a supply tank 21, a pump 22 connected to the supply tank 21, a tube 23 connected to the pump 22, and a venturi tube 24 attached to the tip of the tube 23.
- the supply tank 21 stores water for cleaning the teeth 1.
- the pump 22 is configured to be able to supply water stored in the supply tank 21 toward the tube 23.
- the pump 22 can adjust the pressure of water sent to the tube 23.
- the tube 23 is made of a soft resin.
- the tip of the venturi tube 24 is attached to the injection hole 11 a of the cover 11.
- the venturi tube 24 has a flow path 24 a communicating with the inside of the tube 23 and the gap between the tooth 1 and the cover 11, and from the tube 23 to the gap between the tooth 1 and the cover 11. Water flows through the flow path 24a.
- the flow path 24a has a smooth curved inner surface, and has a small diameter part 24b having a smaller flow path diameter from the upstream side, and an enlarged part 24c having a larger flow path diameter than the small diameter part 24b on the downstream side from the small diameter part 24b. is doing.
- the small diameter portion 24b is provided so that the flow path diameter gradually decreases from upstream to downstream.
- the enlarged portion 24c is provided so that the flow path diameter gradually increases from the small diameter portion 24b toward the downstream. Thereby, the venturi tube 24 can generate cavitation bubbles by the water flowing through the flow path 24a.
- the Venturi tube 24 is attached to the cover 11 using a CADCAM system that is being established in the field of dental technicians.
- the injection means 12 generates cavitation bubbles in the venturi tube 24 by sending the water in the supply tank 21 toward the tube 23 with a predetermined pressure by the pump 22, and covers the cover. 11 to inject toward the inside.
- the injection means 12 can change the injection angle of the cavitation bubbles by adjusting the mounting angle of the venturi tube 24 in the injection hole 11a.
- the discharge means 13 has a drain pipe 25 and a drain tank 26 to which the drain pipe 25 is connected.
- the drain pipe 25 is connected to the discharge hole 11 b so as to communicate with the gap between the tooth 1 and the cover 11.
- the drain tank 26 is configured to store water drained from the drain pipe 25.
- the discharge means 13 is configured to discharge the water in the gap between the tooth 1 and the cover 11 from the discharge hole 11 b to the drain tank 26 through the drain pipe 25.
- the discharge means 13 may be constituted by a suction device, and may be configured to suck and discharge the water in the gap between the tooth 1 and the cover 11 from the discharge hole 11b.
- the oral cavity cleaning method according to the embodiment of the present invention can be suitably implemented by the oral cavity cleaning apparatus 10.
- a tooth 1 to be cleaned is covered with a cover 11, and water is put into a gap between the tooth 1 and the cover 11.
- the front edge and the back edge of the cover 11 are in close contact with the gingiva, and both end portions along the dentition are in close contact with the crown, so that water is held in the gap between the tooth 1 and the cover 11.
- the water in the supply tank 21 is sent by the pump 22 toward the tube 23 at a predetermined pressure, and the water is caused to flow through the flow path 24a of the venturi tube 24 at a predetermined flow rate.
- Cavitation bubbles can be generated in the small diameter portion 24b of the flow path 24a by controlling the pressure by the pump 22 and adjusting the flow rate of the water flowing through the flow path 24a.
- cavitation bubbles can be generated at any position inside the cover 11.
- cavitation bubbles can be poured into narrow spaces such as the gaps of the teeth 1 and the gaps of the implants using the flow of water. For this reason, cavitation bubbles can be easily sprayed toward narrow parts such as the gaps of teeth 1 and implants, and parts with severe dirt such as plaque and calculus, and dirt such as plaque and calculus can be removed. It can be cleaned efficiently.
- the mouth cleaning device 10 and the mouth cleaning method according to the embodiment of the present invention dirt such as plaque (biofilm) and calculus made of oral microorganisms can be cleaned cleanly, and periodontal diseases and around the implant Flames can be effectively prevented. Further, since the deposited particles on the surface of the tooth 1 can be removed, the whitening effect of the tooth 1 can be expected. Since free radicals such as hydroxy radicals are generated by cavitation, the whitening effect of teeth 1 by free radicals can also be expected.
- the cover 11 as a container without attaching it to the oral cavity, for example, extracted teeth or extracted implants can be put into the cover 11 and cleaned.
- the enlarged portion 24c is provided on the downstream side of the small diameter portion 24b of the flow path 24a, cavitation bubbles can be efficiently generated even at a low injection pressure. Can do. Further, since the inner surface of the flow path 24a is formed with a smooth curved surface, water flows smoothly through the flow path 24a, and cavitation bubbles can be efficiently generated with a smaller flow rate and a lower injection pressure.
- the supply unit 21 of the injection unit 12 and the drainage tank 26 of the discharge unit 13 are integrated, and the discharge unit 13 is provided with a filter unit that removes dirt from the water discharged from the discharge hole 11b. Water may be circulated between the gap between the tooth 1 and the cover 11 and between the discharge means 13.
- the venturi tube 24 has a bent portion 24d that bends at an angle of 60 to 120 degrees on the upstream side of the small-diameter portion 24b, and the upstream side of the bent portion 24d with respect to the bent portion 24d.
- the bent portion 24d since the injection direction of the cavitation bubbles is changed by the bent portion 24d, it is easy to clean the molars and implants in the back of the oral cavity. Also, the back side of teeth and implants can be easily cleaned.
- the bent portion 24d is bent at about 90 degrees.
- a dental paint for meshing confirmation is applied to the surface of the dental photocurable resin, and the coating is applied to the paint. Washing was performed. The paint was washed by setting the inner diameter of the small diameter portion 24b of the venturi tube 24 to 0.5 mm and the injection pressure to 0.5 MPa.
- FIG. 3 (b) shows the state where the dental paint is applied to the surface of the dental photocurable resin
- FIG. 3 (a) shows the result of scanning and cleaning the entire surface of the dental photocurable resin for several minutes.
- FIG. 4A shows the result when the cleaning position is fixed and sprayed for 10 seconds.
- FIG. 4B shows the results when the nozzle is 0.5 mm in diameter and the jet pressure is 0.5 MPa, and the jet is jetted for 10 seconds with the cleaning position fixed.
- the entire surface of the dental photocurable resin can be cleaned cleanly to the same extent as the area where the paint is wiped off. It was confirmed that the cleaning effect was high. Moreover, as shown in FIG. 4, when it wash
- the injection pressure p 1 0.5 MPa
- the diameter d of the small diameter portion 24b 0.5 mm
- the standoff distance s 0.5 mm from the tip of the venturi tube 24 to the PVDF sensor
- the length ⁇ of the enlarged portion 24c is 5
- the optimum cleaning effect can be obtained by setting the length ⁇ of the enlarged portion 24c to about 14 times the diameter d of the small diameter portion 24b. I can say that. Further, when the injection pressure p 1 is smaller than 0.5 MPa, the cavitation length becomes short. Therefore, the length ⁇ of the enlarged portion 24c is made shorter than 14 times the diameter d of the small diameter portion 24b, and the injection pressure p 1 is If it is greater than 0.5 MPa, the cavitation length becomes longer, so it is considered that the length ⁇ of the enlarged portion 24c needs to be longer than 14 times the diameter d of the small diameter portion 24b.
- FIG. 8A shows the state of the tooth before cleaning
- FIG. 8B shows the state of the tooth after cleaning for 5 minutes
- FIG. 8 (c) shows the state of the tooth before cleaning in another position
- FIG. 8 (d) shows the state of the tooth after cleaning for 3 minutes. This state is shown in FIG.
- plaque (tartar) adhering to teeth can be cleaned cleanly by cleaning for 1 to 5 minutes, and the cleaning effect by the oral cleaning device 10 and the oral cleaning method of the embodiment of the present invention is effective. It was confirmed to be high.
- the plaque adhering to the surface of the teeth on the lip side of the lower anterior part of the human lower jaw was cleaned.
- the inner diameter of the small diameter portion 24b of the venturi tube 24 was 0.5 mm
- the injection pressure was 0.5 MPa
- the standoff distance was 2 mm.
- 9A shows the state of the tooth when stained in red with a plaque cleaning solution before cleaning so that the site where plaque adheres can be seen
- FIG. 9B shows the state of the tooth after cleaning for 5 minutes. Shown in The injection position of the cavitation bubble is indicated by an arrow in FIG.
- gear is wash
- cavitation bubbles were jetted onto the gingival mucosa of a mini pig.
- the inner diameter of the small diameter portion 24b of the venturi tube 24 was 0.5 mm
- the injection pressure was 0.5 MPa
- the standoff distance was 2 mm
- injection was performed for 3 minutes.
- the tissue of the gingival mucosa 4 hours after the end of injection is shown in FIG.
- neutrophil infiltration in the epithelium and mononuclear cell infiltration in the lamina intestinal were not observed, and no acute inflammatory reaction such as edema was observed. From this, it can be determined that there is no harmful effect on the gingival tissue by the oral cleaning device 10 and the oral cleaning method of the embodiment of the present invention.
- plaque adhered to a test piece having the same surface properties as a dental implant (made of titanium) was cleaned.
- the test piece was fixed to a removable denture-type device and held in a human oral cavity for 3 days to form plaque on the surface.
- the test piece was taken out of the mouth and washed for 5 minutes by the mouth washing apparatus 10 and the mouth washing method of the embodiment of the present invention.
- the inner diameter of the small diameter portion 24b of the venturi tube 24 was 0.5 mm
- the injection pressure was 0.5 MPa
- the standoff distance was 2 mm. After washing, it was colored with a plaque staining solution and observed with a digital microscope.
- FIG. 11 (a) shows the state of the test piece after cleaning
- Fig. 11 (b) shows an enlarged part of the test piece, and after destruction / removal of plaque (biofilm) adhering to the surface of the test piece.
- FIG. 11C shows a surface shape obtained by measuring this state by three-dimensional display using an omnifocal image.
- plaque was peeled off and removed in a spot shape in the region where the cavitation bubbles were ejected from the venturi tube 24.
- plaque (biofilm) having a thickness of about 8 ⁇ m was peeled off and the metal surface was exposed in a spot shape.
- the oral cleaning device 10 and the oral cleaning method according to the embodiment of the present invention are effective for removing plaque from dental implants.
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Abstract
Description
図1乃至図6は、本発明の実施の形態の口腔洗浄装置および口腔洗浄方法を示している。
図1に示すように、口腔洗浄装置10は、カバー11と噴射手段12と排出手段13とを有している。
10 口腔洗浄装置
11 カバー
11a 噴射孔
11b 排出孔
12 噴射手段
21 供給タンク
22 ポンプ
23 チューブ
24 ベンチュリ管
24a 流路
24b 小径部
24c 拡大部
13 排出手段
25 排水管
26 排水タンク
Claims (6)
- 噴射孔を有し、歯との間に隙間をあけて前記歯を被覆し、前記隙間に水を保持可能に設けられたカバーと、
前記噴射孔に取り付けられ、前記隙間に連通する流路を有し、前記流路を前記隙間に向かって流れる水によりキャビテーション気泡を発生可能であり、前記カバーの内側に向かって前記キャビテーション気泡を噴射する噴射手段とを
有することを特徴とする口腔洗浄装置。 - 前記流路は上流側より流路径が小さい小径部を有していることを特徴とする請求項1記載の口腔洗浄装置。
- 前記流路は、前記小径部より下流側に、前記小径部より流路径が大きい拡大部を有していることを特徴とする請求項2記載の口腔洗浄装置。
- 前記流路は、前記小径部の上流側に、60乃至120度の角度で曲がる曲折部を有し、前記曲折部に対して、前記曲折部の上流側の流路とは反対側に広がるよう設けられた水流調整部を有することを特徴とする請求項2または3記載の口腔洗浄装置。
- 前記カバーは排出孔を有し、
前記隙間の水を前記排出孔から排出する排出手段を
有することを特徴とする請求項1乃至4のいずれか1項に記載の口腔洗浄装置。 - 噴射孔を有するカバーにより歯との間に隙間をあけて前記歯を被覆し、前記隙間に水を保持し、
前記噴射孔に取り付けられ、前記隙間に連通する流路を有し、前記流路を前記隙間に向かって流れる水によりキャビテーション気泡を発生可能な噴射手段により、前記カバーの内側に向かって前記キャビテーション気泡を噴射することを
特徴とする口腔洗浄方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2013511013A JP6093928B2 (ja) | 2011-04-22 | 2012-04-18 | 口腔洗浄装置 |
EP12774829.1A EP2700378A4 (en) | 2011-04-22 | 2012-04-18 | DEVICE FOR WASHING THE MOUTH VALVE AND METHOD FOR WASHING THE MOUTH VALVE |
US14/113,320 US20140045140A1 (en) | 2011-04-22 | 2012-04-18 | Device for cleaning oral cavity and method for cleaning oral cavity |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2011095623 | 2011-04-22 | ||
JP2011-095623 | 2011-04-22 |
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WO2012144505A1 true WO2012144505A1 (ja) | 2012-10-26 |
Family
ID=47041611
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PCT/JP2012/060411 WO2012144505A1 (ja) | 2011-04-22 | 2012-04-18 | 口腔洗浄装置および口腔洗浄方法 |
Country Status (4)
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US (1) | US20140045140A1 (ja) |
EP (1) | EP2700378A4 (ja) |
JP (1) | JP6093928B2 (ja) |
WO (1) | WO2012144505A1 (ja) |
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JP7065365B2 (ja) | 2017-02-07 | 2022-05-12 | パナソニックIpマネジメント株式会社 | 口腔洗浄装置およびそのノズル |
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GB2555449B (en) * | 2016-10-28 | 2020-04-22 | Dyson Technology Ltd | Cleaning appliance |
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CN115381572A (zh) * | 2021-05-25 | 2022-11-25 | 广东美西科技有限公司 | 口腔护理设备的控制方法、装置、电子设备及存储介质 |
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JP2019022680A (ja) * | 2012-09-11 | 2019-02-14 | ヘッカーマン, ブラッドHECKERMAN, Brad | 放電洗浄器装置及び方法 |
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KR20190065678A (ko) * | 2017-12-04 | 2019-06-12 | 주식회사 에스엠디솔루션 | 구강 세정용 마우스피스 및 이를 포함하는 구강 세정 장치 |
KR101995572B1 (ko) | 2017-12-04 | 2019-07-02 | 주식회사 에스엠디솔루션 | 구강 세정용 마우스피스 및 이를 포함하는 구강 세정 장치 |
Also Published As
Publication number | Publication date |
---|---|
EP2700378A4 (en) | 2014-09-03 |
JPWO2012144505A1 (ja) | 2014-07-28 |
US20140045140A1 (en) | 2014-02-13 |
EP2700378A1 (en) | 2014-02-26 |
JP6093928B2 (ja) | 2017-03-15 |
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