ES2536591B1 - Photodynamic device for oral hygiene and treatment - Google Patents

Abstract

Photodynamic oral treatment device for the application of photodynamic therapy and usable at home and without medical supervision, comprising a light irradiator with a transparent dental splint (1) and an optical fiber support (2) embedded in the dental splint , a light emitting assembly with a light generator (14) powered by a rechargeable battery, which is coupled to the light irradiator and finally a charging base on whose surface a seat for the device and a power supply circuit is provided. Battery.

Description

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DESCRIPTION

Photodynamic device for oral hygiene and treatment OBJECT OF THE INVENTION

The object of the present invention is a device for domestic use for oral hygiene and the prevention and treatment of periodontal disease in all its phases, starting with dental plaque, caries, gingivitis, calculus and, until the last, periodontitis; all through photodynamic therapy, said apparatus being totally autonomous and usable without medical supervision.

BACKGROUND OF THE INVENTION

Periodontal disease is the simple way to refer to any type of periodontitis.

Periodontitis is the most frequent cause of tooth loss or extraction of teeth in subjects over thirty-five years old. Up to 80% of the exodontics in these patients are related to this problem. Periodontal disease is constituted by a group of infectious etiology clusters that produce inflammatory lesions with a high local destructive capacity and potential systemic damage.

Mechanical and chemical therapies have demonstrated great chemical effectiveness, however, treatment with them is not exempt from a series of limitations, such as the inability to predictably eliminate certain periodontal pathogens, or the ability to recolonize such pathogens. persistent in other oral niches, as well as the great problem of the abusive use of antibiotics: resistance.

An innovative therapy in the treatment of periodontal disease is photodynamic therapy.

Specifically, photodynamic therapy is based on the union of the therapeutic effect of a substance that alters the redox potential (photoactive substance) and in turn is photosensitive, and that can be activated by a light of a certain wavelength.

During this process, oxygen free radicals are formed, and these produce a toxic effect on the cells, for example on harmful bacteria and fungi, but do not produce the development of resistance such as antibiotics or other active ingredients.

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To date, this type of therapy is reserved exclusively for outpatient treatments, having developed professional devices such as the one described in patent CA2700368, consisting of a laser light emitter connected by a cord to a base station.

The laser emitter comprises a light supply tip with which the dentist systematically exposes the area to be treated, in which a photosensitizing agent such as methylene blue has previously been administered, which is an easily accessible substance and that until now has been used as an antiseptic and healing.

It would be advantageous to develop a device that would allow the application of photodynamic therapy to treat periodontal conditions and oral hygiene by the same patient, at home and without the need for specialized knowledge.

DESCRIPTION OF THE INVENTION

The photodynamic device for oral treatment object of the present invention improves the state of the art by being the first device for the application of photodynamic therapy in oral and periodontal hygiene treatments, any of the previous phases or the same periodontal, which can be used at home and without medical supervision.

Specifically, the new device is capable of uniformly irradiating the entire periodontium with light of suitable wavelength to the photosensitizing agent used, applying the right dose of light radiation, for which it controls the irradiation power and time.

In this way, the user simply has to apply the photosensitive agent and then activate it by means of the new device.

The new photodynamic device has three elements: a light emitting assembly, a light irradiator and a charging base.

The emitter assembly integrates all the devices necessary to generate a light emission of power and wavelength suitable for the activation of the photosensitive agent associated with the treatment to be performed, and during a controlled period of time.

This photosensitive agent can be, for example, blue Arianor steel, toluidine blue O, violet crystal, methylene blue and its derivatives, celestial blue cert, azure chloride B, 2 blue, blue I chloride, azur B tetrafluoroborate, thionine, blue I eosinate, azure B eosinate, SICC mix blue, blue II eosinate, hematoporphyrin HCI, haematoporfarin ester, disulfonated aluminum

phthalocyanine, or any other agent with therapeutic capacity appropriate to the treatment of

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Periodontal diseases such as porphyrins, pyrroles, tetrapyrrolic compounds, expanded pyrrolic macrocycles, and their respective derivatives.

The light irradiator conducts and distributes the generated light radiation over the entire periodontium.

Operationally, the irradiator can be part of the light emitting assembly or become an individual element that can be coupled to it and even replaceable.

The charging base has as its main function the charging of a battery that feeds the devices contained in the light generator, however in more complex developments it is used as a "dock station" to incorporate new software versions or test the device.

The light irradiator comprises:

• A dental splint of transparent material such as silicone, polycarbonate, polyethylene, methacrylate, epoxy resins, glass or any other afm material, covering both the upper and lower dental arch.

• A support of optical fibers, made in one or more pieces, which is embedded in the dental splint, and which at the same time includes:

o A double outer arch that is positioned on the vestibular face of the dental splint, facing the vestibular face of the upper and lower arch teeth.

o A double inner arch that is positioned on the lingual face of the dental splint, facing the lingual face of the teeth of the upper and lower arch.

o At least one joint bridge that connects the double outer arch with the double inner arch.

o At least one beam of optical fibers that enter through the junction bridge and spread evenly along the double outer arch and the inner double bow, so that the inner end of each fiber faces the vestibular or lingual face of the teeth, preferably focusing the union between the tooth and the enda.

o At least one fiber optic connector, protruding from the vestibular face of the dental splint.

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The light emitting assembly comprises:

• A housing that removably or removably attaches to the light irradiator through its vestibular area.

• An opaque sheet that is arranged on the border between the housing and the light radiation applicator, in which a fitting or emptying is provided in correspondence with each of the fiber optic connectors, whose purpose is to prevent the light from The mouth can go outside and damage the user.

• An electronic card housed inside the housing that distinguishes:

o A timer circuit that turns off the device after a certain time.

o A device power circuit,

o One or more indicator lights visible from the outside of the housing indicating the operating status of the device.

o One or more light generators arranged facing the fiber optic connectors such as laser diode, LEDs, YAG laser metalloproteinase (doped with neodymium yttrium garnet aluminum), CO2, low power diode laser, neutrophil collagenase or matrix 8 (MMP-8) or PMNL collagenase (MNL-CL), commonly used in periodontics, neodymium-YAG laser with erbium, tulium or trivalent holmium, sapphire laser, ruby laser, quantum dot laser, helium-neon laser .

o A power supply that includes at least one rechargeable battery and advantageously an inductive recharge coil.

The charging base comprises:

• A housing on whose surface a seat is provided for the device.

• An electronic card housed inside the housing consisting of a power circuit that advantageously incorporates a coil suitable for inductionly recharging the battery of the light generator.

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DESCRIPTION OF THE DRAWINGS

In order to illustrate how much has been exposed so far, a set of illustrative and non-limiting drawings of the practical possibilities of the invention is attached, in which a laser diode is used as a light generator.

In these drawings:

Figure 1 consists of a perspective view of the invention.

Figure 2 consists of a longitudinal sectional view of the invention.

Figure 3 consists of a detailed section of the junction zone between the light generator and the light irradiator.

Figure 4 corresponds to an exploded view of the invention.

Figure 5 corresponds to a perspective view of the optical fiber support.

Figure 6 corresponds to a perspective view of the light irradiator.

PREFERRED EMBODIMENT OF THE INVENTION

The new device according to a preferred embodiment consists of three independent parts:

- A light emitter

- A light irradiator

- A charging base

The irradiator comprises a dental splint (1) which in the case described is silicone in which a support of optic fibers (2) of methacrylate is embedded, with the ferula forming a single element to facilitate cleaning and replacement.

The fiber optic support comprises a double outer arch (3) positioned on the vestibular face of the dental splint (1), a double inner arch (4) positioned on the lingual face of the dental splint (1), a joint bridge (5) that joins the double outer arc (3) with the double inner arc (4) and incorporates an optical fiber connector (6) that protrudes from the vestibular face of the dental splint (1).

Inside the fiber support (2) there is a beam of optical fibers, which enter through the connecting bridge (5) through the connector (6) and are distributed evenly by the double arc

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outer (3) and double inner arc (4) so that the inner end of each fiber (7) faces the vestibular or lingual face of the teeth, focusing the joint between the tooth and the enda.

The light emitting assembly comprises a housing (1) that is removably coupled to the irradiator by means of projections (9) that fit into grooves (10) provided on the sides of the dental splint (1).

The housing incorporates an opaque metal sheet (11) that adjusts to it with the interposition of a gasket (12).

Inside the housing there is an electronic card (13) with a light generator (laser diode) (14) that, when the irradiator is attached, faces the fiber connector (6) so that the light emitted enters the optical fibers through the connector (6) and exits at the end (7) of these coupled to the double arcs (3) and (4) radiating the periodontium in the area where the tooth is attached to the enda.

The electronic card (13) includes an ignition circuit based on two light sensors (15) that are excited by the light that hits the housing through two ports (16) provided on opposite sides of the housing (8).

For activation, just cover both ports (16) at the same time, so that the light sensors (15) change state and the system is activated. It also includes a timer circuit that turns off the device after a preset time, to which an LED that acts as a warning light (17) is associated, staying lit while the light generator (14) is emitting.

All these elements are powered by a rechargeable battery (not illustrated) that is recharged by induction through a coil (18) located next to the electronic card and that works in symptomatology with a second coil provided in the charging base (not illustrated) ).

The operation for use of the device once the rechargeable battery has been charged is to rinse the mouth with a photosensitive agent, then rinse with water to remove the remains and finally, place the invention in front of the mouth, holding the splint (1) with the teeth, cover the ports (16) with the fingers, which activates the laser diode (14). The device will be kept running by irradiating the periodontium the predetermined time in the timer, automatically turning off after this, which

it is indicated by turning off the LED indicator light (17). At that time the device is removed from the mouth.

List of references:

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 1. Dental splint

 2. Optical fiber support

 3. Double outer arch

 4. Double inner arch

 5. Bridge

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 6. Optical fiber connector

 7. Extreme optical fibers

 8. Housing

 9. Outgoing housing

 10. Ferula slots

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 11. Protective sheet

 12. Sealing gasket

 13. Electronic card

 14. Light generator (Laser diode)

 15. Light sensor

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 16. Louvers

 17. Light witness (LED)

 18. coil

Claims (10)

5 10 fifteen twenty 25 30 1. - Photodynamic device for oral hygiene and treatment essentially characterized in that it comprises: - A light irradiator that in turn comprises: • A transparent dental splint (1) that covers both the upper and lower dental arch. • A support of optical fibers (2), which is embedded in the dental splint. - A light emitting assembly which in turn comprises: • A housing (8) that attaches to the light irradiator through its vestibular zone. • An opaque sheet (11) that is arranged at the border between the housing and the light irradiator. • An electronic card (13) with a light generator (14) powered by a rechargeable battery. - A charging base which in turn comprises: • A housing on whose surface a seat is provided for the device. • An electronic card consisting of a power circuit. 2. - Photodynamic device according to the first claim, characterized in that the optical fiber support (2) comprises: - A double outer arch (3) that is positioned on the vestibular face of the dental splint (1) facing the vestibular face of the upper and lower arch teeth. - A double inner arch (4) that is positioned on the lingual face of the dental splint (1), facing the lingual face of the teeth of the upper and lower arch. - At least one joint bridge (5) that connects the double outer arch (3) with the double inner arch (4). - At least one fiber optic connector (6) protruding from the vestibular face of the dental splint (1). 3. - Photodynamic device according to the first claim, characterized in that the electronic card (13) includes: - A timer circuit that turns off the device after a certain time - A device power circuit - One or more indicator lights visible from the outside of the housing indicating the operating status of the device - One or more light emitters (14), arranged facing the fiber connectors 5 optics (6) - A power supply that includes at least one rechargeable battery 4. - Photodynamic device according to the first and third claim, characterized in that the electronic card (13) comprises an inductive recharge coil (18) in combination with a coil provided in the power circuit of the charging base, for recharging by 10 induction of the battery of the device. 5. - Photodynamic device according to the first claim characterized in that the light generator (14) is a high or low power laser diode, or set of laser diodes.
6. - Photodynamic device according to the first claim characterized in that Light generators (14) are LEDs.
15 7.- Photodynamic device according to the first claim characterized in that the Light generators (14) are YAG or Nd-YAG laser.
8. - Photodynamic device according to the first claim characterized in that Light generators (14) are sapphire laser.
9. - Photodynamic device according to the first claim characterized in that the 20 light generators (14) are ruby.
10. - Photodynamic device according to the first claim characterized in that the Light generators (14) are quantum dot laser.
11. - Photodynamic device according to the first claim characterized in that the Light generators (14) are helium-neon laser.