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WO2015056034A1 - Dispositif de blanchiment des dents avec surveillance en temps réel du processus de blanchiment - Google Patents

Dispositif de blanchiment des dents avec surveillance en temps réel du processus de blanchiment Download PDF

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Publication number
WO2015056034A1
WO2015056034A1 PCT/HR2013/000030 HR2013000030W WO2015056034A1 WO 2015056034 A1 WO2015056034 A1 WO 2015056034A1 HR 2013000030 W HR2013000030 W HR 2013000030W WO 2015056034 A1 WO2015056034 A1 WO 2015056034A1
Authority
WO
WIPO (PCT)
Prior art keywords
whitening
module
teeth
light emitters
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/HR2013/000030
Other languages
English (en)
Inventor
Mario RAKIC
Eva KLARIC
Natasa VUJICIC
Hrvoje SKENDEROVIC
Zrinka TARLE
Goran PICHLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SVEUCILISTE U ZAGREBU STOMATOLOSKI FAKULTET
Institut ZA Fiziku
Original Assignee
SVEUCILISTE U ZAGREBU STOMATOLOSKI FAKULTET
Institut ZA Fiziku
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SVEUCILISTE U ZAGREBU STOMATOLOSKI FAKULTET, Institut ZA Fiziku filed Critical SVEUCILISTE U ZAGREBU STOMATOLOSKI FAKULTET
Priority to PCT/HR2013/000030 priority Critical patent/WO2015056034A1/fr
Publication of WO2015056034A1 publication Critical patent/WO2015056034A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61C19/063—Medicament applicators for teeth or gums, e.g. treatment with fluorides
    • A61C19/066—Bleaching devices; Whitening agent applicators for teeth, e.g. trays or strips

Definitions

  • the present invention reveals a teeth whitening device with real time monitoring of whitening process. It belongs to the field of radiation therapy performed on a body parts, i.e. teeth, where whitening' (therapy) is performed by adequately selected light source acting on the active photosensitive substance used in whitening process.
  • conventional teeth whitening procedure in the dental office may last up to two hours, and it may be painful procedure with noticeable regression.
  • the consumers need a customizable whitening alternative that yields results similar to the initial professional whitening with supervision, but at the convenience of the home whitening process that allows more frequent application and more stabilized whitening results. Additionally, there is a need to improve ⁇ whitening process even in dental offices to be carried out by a nurse, leaving a dentist more time for other tasks.
  • the first technical problem solved by the present invention is to produce monitoring of teeth whitening procedure in real time in order to prevent known extreme pulpal temperature rise during the whitening process and ensures uniform whitening of the teeth.
  • Whitening results are best achieved when there is repeatedly use of the whitening agent such as carbamide or hydrogen peroxide, targeted to the area to be whitened, in a safe manner without high concentrations of whitening agents that can burn the gum tissue.
  • the whitening agent such as carbamide or hydrogen peroxide
  • Increasing the number of whitening processes gives the consumer ability even to perform a teeth whitening procedure at home, with unwanted side-effects greatly reduced or even eliminated.
  • the second technical problem solved by the present invention is to provide easy-to-use device handling, despite a significant number of optical connections used in the equipment that have to be connected to the control unit.
  • the intended use is oriented to professionals and non-professionals and that feature is important for reliable operation of disclosed device.
  • Document EP 2 386 264 A2 inventor LEVINE J.B., teaches about a mouthpiece that adjusts to the user arch sizes and seals from oxygen exposure. This document can be considered as the closest prior art.
  • the disclosed invention consists of a flexible mouthpiece that follows the distribution of upper and lower teeth, where said teeth are positioned in the space where is possible to apply the whitening agent without being spilled into mouth cavity.
  • the light emitters for whitening are surface mounted LED devices and furthermore, the system is equipped with the auxiliary heaters.
  • the difference to the present invention is that it comprises real time monitoring of whitening process by taking measurement of the whitening process via charge coupling device (CCD) or similar device, and that device is further equipped with the "shut down" option in case of overheating, while the whitening process can be accelerated by using any of the known light emitters for whitening such as OLED, or UV LED.
  • Document WO 2010/078581 Al inventors HAMMOND T. et al., teaches about an organic light emitting diode phototherapy lighting system. The system is suitable for the phototherapy i.e. teeth whitening using the OLED technology.
  • the EP 2 386 264 A2 it proposes a temperature control of the process, i.e. claims 61-71, and even a thermoelectrical cooling system.
  • the present invention differs from the said document having real time monitoring of whitening process by taking measurement of the whitening process via CCD or similar device.
  • Document WO 2010/098761 Al inventor LEVINE J.B., teaches about intra-oral whitening device consisting of a mouthpiece in which is embedded in a flexible circuit board and arrays of spaced apart lamps.
  • the lamps may be light emitting diodes that generate electromagnetic radiation, preferably in the white and blue light spectrum and the infrared and ultraviolet light spectrum.
  • the arrays are positioned to expose the facial and lingual sides of the teeth for whitening when the mouthpiece is positioned to fit upper and lower rows of teeth to be whitened within accommodating recesses.
  • a dental device for exposing teeth to electromagnetic radiation includes a carrier and at least one source of electromagnetic radiation attached to the carrier and oriented so that the electromagnetic radiation is emitted from the source to a surface of a tooth.
  • the dental device may also include a power source internally or externally disposed with respect to the carrier, and may include a circuit for controlling radiation emitted from the source.
  • the dental device may be used for whitening teeth and dental hygiene in general.
  • Present invention discloses a teeth whitening device with real time monitoring of whitening process that comprises a mouthpiece being inserted into a patient's mouth together with wiring and fibers interconnecting said mouthpiece with a whitening control unit.
  • a mouthpiece is formed from anatomically shaped elastic body with plurality of bite surfaces extending out from the said body into patient' s mouth cavity preventing whitening agents to be spilled into.
  • the deformable frame is equipped with one or more modules for whitening and measurement inserted into mouthpiece's body.
  • Each module consists of one or more light emitters for whitening, light emitters for monitoring, and optical fiber that is embedded into the body and which ends with a light coupling element.
  • a light coupling element is positioned on the body surface close to a tooth surface.
  • the body is transparent for the wavelengths emitted from light emitters for whitening and light emitters for monitoring.
  • the control unit receives the data regarding the development of whitening process from one or more modules -and decision logic adjusts a speed of teeth whitening process in real time.
  • each module may be optionally equipped with one or more temperature sensors embedded into the mouthpiece body sending temperature information to decision logic that shuts down light emitters for whitening when whitening process exceeds the set temperature limit.
  • the real time data of whitening process, executed by each module comprises digital information converted from an optical signal picked by the light coupling element once the teeth are being exposed to the light emitters for monitoring.
  • the light coupling element may be an optical lens or just the end of corresponding optical fiber.
  • the decision logic controls and shuts down light emitters for whitening in some particular module when digital information converted from an optical signal achieves desired value for the signal picked from the said module.
  • the decision logic also adjusts the speed of tooth whitening process by adjusting the emitted energy of light emitters for whitening situated in each module according to the signal picked from the said module and processed by above said decision logic.
  • the emitted energy can be regulated in simple manner via repetitively on-off process of light emitters for whitening.
  • the light emitters for whitening are selected from the group consisting of OLED, UV LED, blue LED or their- combination within each module.
  • the light emitters for monitoring are selected from the group consisting of white LED, red LED, green LED, blue LED, OLED or their combination within each module.
  • the optical fiber that comes out from the module is coupled to the photodiode followed by an analog- to-digital converter for digitizing the signal intensity to be further processed by the decision logic according to the pre-stored algorithm.
  • plurality of optical fibers are joined together via multi track fiber to enable quick connect fiber output to be connected and disconnected quickly from the control unit.
  • an optical signal picked by the light coupling element is converted via optical sensor selected from the group consisting of CMOS and CCD into its RGB components or alternatively into' relative intensity - to be processed by the decision logic according to the pre-stored algorithm.
  • Figure 1 shows the device consisting of a mouthpiece, wiring and fibers and control unit.
  • Figure 2 shows a mouthpiece with partial cross-section which reveals the position of the elements mounted on the deformable frame.
  • Figure 3 depicts the relative position of the elements used in whitening process and in real time monitoring of whitening process.
  • Figure 4 reveals principal scheme of disclosed device.
  • Figures 5A-5D show independent RGB components for each whitening experiment A-D performed in vitro.
  • New teeth whitening device with real time monitoring of whitening process is proposed as a solution of the technical problems set before.
  • the essential parts of the device consist of mouthpiece (10), control unit (40) and wiring and fibers (20) interconnecting said mouthpiece (10) with a control unit (40) .
  • the technical role of the mouthpiece (10) is well described in the previous art, i.e. EP 2 386 264 A2, here depicted on Figure 1.
  • the mouthpiece (10) is formed from anatomically shaped elastic body
  • the elastic body (12) is equipped with plurality of bite surfaces (11) extending out from the said body
  • Deformable frame wraps the deformable frame (13) caring one or more modules (30) for process of whitening and whitening process measurement.
  • Deformable frame may be manufactured from light and rigid materials such as aluminum or aluminum alloys, or adequate plastic materials that are capable of carrying said modules (30) and retain the shape of mouthpiece (10) .
  • Wiring and fibers (20) are inserted into elastic body (12) during the manufacturing process to provide operational energy to modules (30) and to pick the optical signals from said modules (30) as well as the temperature information.
  • Each module (30) consists of one or more light emitters for whitening (21), light emitters for monitoring (22), and optical fiber (24) embedded into the body (12) that ends with a light coupling element (23) positioned on the body (12) surface close to a tooth surface.
  • the module (30) can be equipped with one or more temperature sensors (25) embedded also into the body (12) .
  • Figure 3 shows few modules (30) mounted on the deformable frame (13)
  • Figure 2 shows an example of distribution of several module elements within the elastic body (12) .
  • each module has one or more light emitters for whitening (21) selected from the group consisting of OLED, UV LED, blue LED or their combination.
  • light emitters for whitening (21) are distributed uniformly across the body (12) in order to maintain constant light energy flux to the whitening agent ensuring desirable whitening process performed by each module (30) . If the light emitters for whitening (21) are positioned entirely within the body (12), i.e. not close to the surface, then the used material for forming the body (12) has to be transparent for the wavelengths emitted from light emitters for whitening (21) .
  • UV LED Model No.: YSL-RS47P4C-E3, CHINA YOUNG SUN LED TECHNOLOGY CO., LTD;
  • PLED element described in: C. F. Qiu, L. D. Wang, H. Y. Chen, M.
  • the regulation of the energy emitted by light emitter for whitening (21) can be performed either by the variation of the intensity, i.e. voltage regulation that distorts the emitted light spectrum, or more preferably by repeating on-off of said light emitter for whitening (21), controlled by the control unit (40).
  • the temperature sensors (25) are used in order to prevent an extreme pulpal temperature rise during the whitening process.
  • the temperature sensors (25) can be of any kind such as NTC glass encapsulated thermistors distributed within the body (12) that transmit the information regarding the temperature close to some module (30) to the control unit (40) .
  • the control unit (40) will shut down further whitening process for the said modules (30) and keep the pulpal temperature within desired values.
  • the core of invention is real time monitoring of whitening process.
  • each, module (30) embedded into the body (12) has been equipped with light emitters for monitoring (22) , and optical fiber (24) that ends with a light coupling element (23) .
  • all light emitters for monitoring (22) although depending to various modules (30) may be optionally connected in parallel and engaged at the same time.
  • the material used for the body (12) formation should be transparent for the wavelengths emitted from light emitters for monitoring (22) .
  • the light emitters for monitoring (22) have to be used only during the measurement process in order to prevent overheating of the corresponding modules (30) .
  • Light coupling elements (23) are situated at the body (12) surface, Figure 2, and are optically connected to the optical fiber (24) that guides the picked light to the measuring sensor.
  • Good candidates for the light emitters for monitoring (22) are white LED, i.e. model No.: YSL-R547W2C-A13, CHINA YOUNG SUN LED TECHNOLOGY CO., LTD; or any other red, green or blue set of LEDs commercially available.
  • the light coupling element (23) should be formed as an optical lens, i.e. fish eye lens or similar considering the -fact that the technical role is only to pick the reflected light into an optical fiber (24) in course of whitening process.
  • the end of the optical fiber (24) can be also used as the light coupling element (23) with or without a drop of transparent adhesive at the surface of the body (12) that can serve as a primitive fish eye lens.
  • the person skilled in the art can modify any light coupling element (23) to serve in the process of collecting optical signal regarding the whitening process.
  • the light coupling element (23) has to be mounted in the manner to avoid collecting the light emitted directly from the light emitters for monitoring (22) .
  • the optical signal picked by some optical fiber (24) pertaining to the module (30) can be processed in one or more ways.
  • the simplest way is to use photodiode as the optical sensor (41) for converting the intensity of the reflected light into analogue electrical signal.
  • the electrical signal is amplified and converted into digital information by an analog-to-digital converter that is processed by the (DL) decision logic (42) .
  • the decision logic (42) for some module (30) achieves the desired value, the whitening process can be stopped. Also, it is possible to adjust the process to be uniformly carried for all used modules (30) by monitoring their intensity.
  • the optical signal picked by the light coupling element (23) situated within some module (30) is converted via optical sensor (41) - OS.
  • the OS is selected from CMOS (Complementary Metal Oxide Semiconductor) or CCD (Charge-coupled device) into desired information. It is well known in the art that CCD and CMOS image sensors are used as the . image sensors in a digital camera; however particular use depends on the spectrum that has to be picked.
  • CCD/CMOS optical sensor (41) can either convert the picked signal into the relative intensity information; or in another embodiment according to the invention - into RGB components. In both situation, i.e. intensity or RGB, this information is processed by the decision logic (42) .
  • Multi track fiber (31) enables the signal picked by optical fibers to be simply and reliably connected/disconnected from the optical sensor situated within the control unit (40) by using the QCFO - quick connect fiber output (32) attached to the end of a MTF and adjusted to the used optical sensor (41) .
  • Said embodiment facilitates ⁇ quick an ⁇ d_ jeliabLe-handling ⁇ - even by non-technicians.
  • Information picked from all modules (30) enables the monitoring of the whitening process as well as adjustment of the process to be uniformly carried for all used modules (30) . Suitable MTF and QCFO are possible to obtain from Newport Corporation (www.newport.com) .
  • the most preferred solution is one that process RGB information by the decision logic (42) , as is demonstrated by the following experiment carried out in vitro.
  • Figures 5A-5D show measurement carried out in vitro on specifically prepared pastilles that emulate teeth under whitening process.
  • the pastilles were formed from hydroxylapatite for analysis, ACROS ORGANICS, Lot A0229866, US.
  • Hydroxylapatite is naturally occurring mineral form of calcium apatite. The reason for choosing the hydroxylapatite is that up to 50% of bone by weight is a modified form of hydroxylapatite, and carbonated calcium-deficient hydroxylapatite is the ⁇ main mineral of which dental enamel and dentin are composed.
  • This experimental " model on pastilles of hydroxilapatite was developed in our laboratory.
  • Each pastille is formed from exactly 400 mg hydroxylapatite and pressed and compacted under 20 bar press in the same manner to be identical. All pastilles were dried on 150°C for two hours. Each pastille was 10 mm in diameter and 2 mm thick. They were absolutely equal, had the same RGB (red, green, blue) index before dyeing in tea and there is no other parameter apart from the bleaching process that can affect the outcome, see for example Paliska, J., Stipetic, A., Tarle, Z., Ristic, M . , Ban, T., Vujicic, . , Pichler, G. (2011) "Colorimetric Assessment of Different Tooth Whitening Procedures"; Acta Stomatol Croat. (2011), 45, 258-267.
  • the coloring of the pastilles was performed by the concentrated green tea by letting the pastilles to be exposed for a different time to the green tea solution on 29°C. Solution was made from 2 g of green tea (Cedevita®, Weg) boiled in 100 ml of distilled water for 5 min. The similar procedure was performed in the article Sulieman . , Addy M. , Rees JS . "Development and evaluation of a method in vitro to study the effectiveness of tooth bleaching" J. Dent. (2003) 31, 415- 22) .
  • the pre-stored algorithm of decision logic (42) can handle received signal and correct/monitor the whitening process in different part of the mouth if necessary via switching on/off light emitters for whitening within desired modules (30) .
  • the person skilful in the art will simply program the decision logic (42) in the form of a PLC (Programmable Logic Controller) or similar device to obtain safe and reliable operation of the teeth whitening device with real time monitoring of whitening process.
  • PLC Programmable Logic Controller
  • the present invention discloses a teeth whitening device with real time monitoring of whitening process that can be used by professionals and patients equally. Furthermore, it is possible to use a slightly modified device disclosed herein, in the manner obvious for an expert in the field, in assessments and development of whitening agents and pastille models.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention concerne un dispositif de blanchiment des dents avec surveillance en temps réel du processus de blanchiment. Ledit dispositif comprend un embout buccal (10) à insérer dans la bouche du patient, des câbles et des fibres (20) raccordant ledit embout buccal (10) à une unité de commande (40). L'embout buccal (10) est formé à partir d'un corps élastique de forme anatomique (12) avec une pluralité de surfaces de morsure (11), un cadre déformable (13), inséré dans le corps (12), étant équipé d'au moins un module de blanchiment et de mesure (30). Chaque module (30) est constitué d'un ou plusieurs émetteurs de lumière pour le blanchiment (21), émetteurs de lumière pour la surveillance (22), de fibre optique (24) et de capteurs de températures facultatifs (25) intégrés dans le corps (12) qui se termine par un élément de couplage lumineux (23) position sur la surface du corps (12) à proximité d'une surface dentaire. L'unité de commande (40) reçoit les données relatives au statut du processus de blanchiment d'au moins un module (30). La logique de décision (42) ajuste une vitesse du processus de blanchiment des dents pour obtenir un blanchiment uniforme et prévenir une augmentation extrême de la température de la pulpe au cours du processus de blanchiment.
PCT/HR2013/000030 2013-10-18 2013-10-18 Dispositif de blanchiment des dents avec surveillance en temps réel du processus de blanchiment Ceased WO2015056034A1 (fr)

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PCT/HR2013/000030 WO2015056034A1 (fr) 2013-10-18 2013-10-18 Dispositif de blanchiment des dents avec surveillance en temps réel du processus de blanchiment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016178472A1 (fr) * 2015-05-06 2016-11-10 주식회사 지에이 Dispositif de photothérapie à insertion par voie orale

Citations (6)

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Publication number Priority date Publication date Assignee Title
US20060127837A1 (en) * 2004-12-13 2006-06-15 Novocal, Llc Dental bleaching using regenerative ionophoresis
US20070059660A1 (en) 2003-07-22 2007-03-15 Biolase Technology, Inc. Device for dental care and whitening
WO2010078581A1 (fr) 2009-01-05 2010-07-08 Plextronics, Inc. Système d'éclairage pour photothérapie à diodes électroluminescentes organiques
WO2010098761A1 (fr) 2009-02-27 2010-09-02 Leslie Cifuentes French Dispositif de blanchiment intra-oral
US20110010463A1 (en) 2009-07-09 2011-01-13 International Business Machines Corporation Propogation of dns server ip addresses in a private network
EP2386264A2 (fr) 2010-03-18 2011-11-16 Jonathan B. Levine Embout s'ajustant aux tailles d'arcade de l'utilisateur et assurant une étanchéité lors d'une exposition à l'oxygène

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070059660A1 (en) 2003-07-22 2007-03-15 Biolase Technology, Inc. Device for dental care and whitening
US20060127837A1 (en) * 2004-12-13 2006-06-15 Novocal, Llc Dental bleaching using regenerative ionophoresis
WO2010078581A1 (fr) 2009-01-05 2010-07-08 Plextronics, Inc. Système d'éclairage pour photothérapie à diodes électroluminescentes organiques
WO2010098761A1 (fr) 2009-02-27 2010-09-02 Leslie Cifuentes French Dispositif de blanchiment intra-oral
US20110010463A1 (en) 2009-07-09 2011-01-13 International Business Machines Corporation Propogation of dns server ip addresses in a private network
EP2386264A2 (fr) 2010-03-18 2011-11-16 Jonathan B. Levine Embout s'ajustant aux tailles d'arcade de l'utilisateur et assurant une étanchéité lors d'une exposition à l'oxygène

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
C. F. QIU; L. D. WANG; H. Y. CHEN; M. WONG; H. S. KWOK: "Room-temperature ultraviolet emission from an organic light-emitting diode", APPL. PHYS. LETT., vol. 88, 2006, pages 143511
KUGEL G; FERREIRA S; SHARMA S; BARKER ML; GERLACH RW: "Clinical trial assessing light enhancement of in-office tooth whitening", T ESTHET RESTOR DENT, vol. 21, pages 336 - 347
PALISKA, J.; STIPETIC, A.; TARLE, Z.; RISTIC, M.; BAN, T.; VUJICIC, N.; PICHLER, G.: "Colorimetric Assessment of Different Tooth Whitening Procedures", ACTA STOMATOL CROAT., vol. 45, 2011, pages 258 - 267
SULIEMAN M.; ADDY M.; REES JS.: "Development and evaluation of a method in vitro to study the effectiveness of tooth bleaching", J. DENT., vol. 31, 2003, pages 415 - 22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016178472A1 (fr) * 2015-05-06 2016-11-10 주식회사 지에이 Dispositif de photothérapie à insertion par voie orale

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