RU168454U1 - Endodontic apparatus for final pre-obstructive sanitation (sterilization) of the root canal system - Google Patents

Abstract

The utility model relates to medical equipment, in particular to therapeutic dentistry, and can be used for the final (final) preobstructural debridement (sterilization) of the root canal system in the treatment of complicated forms of caries. The essence of the proposed utility model is that the endodontic apparatus for the final pre-obstructive sanitation of the root canal system of the tooth is equipped with a short-wave ultraviolet (UVC) LED with a wavelength of 255 ± 5 nm, which is located in the endodontic apparatus housing, where the control unit with a timer with limiting the maximum exposure time to 20 seconds. A focused shortwave ultraviolet light beam is supplied from the LED to a fiber optic disposable tip. The advantages of the utility model are in high-quality sterilization of the entire root canal system in an ergonomic mode. 1Photo 5

Description

Endodontic apparatus for final pre-obstructive sanitation (sterilization) of the root canal system

The utility model relates to medical equipment, in particular to therapeutic dentistry, and can be used for the final (final) preobstructural sanitation (sterilization) of the root canal system in the treatment of complicated forms of caries in an ergonomic mode of operation.

It has been proven that one of the most important stages of endodontic treatment, which has a significant impact on its prognosis, is antimicrobial rehabilitation of the root canal system (Christopher P., Zhang R., Michalek S., 2005; Rabinovich I.M., Abakarova D.S., Snegirev M.V., 2011; Mozgovaya L.A., Zadorina I.I. 2013). Due to the complex histomorphology of the root canal, no modification of the rotary endodontic instrument can directly mechanically clean the root canal of microorganisms and their decay products by direct contact (Abakarova D.S., 2011). In addition to the generally accepted mechanical and chemical means, in recent decades, in most countries of the world, in-channel use of physical factors has been intensively introduced into practical medicine (Olekhina O.V., 2011). It is proved that UV radiation in the range of 254 nm has a pronounced bactericidal effect. The results of the study of UV radiation on the wall of the infected root canal of the tooth are known, in 96% of cases the sterilization efficiency of UV radiation was determined, the direct effect of relatively low doses of short-wave UV light (2-7 mJ cm (-2)), with a single exposure it effectively eliminates all strains orotofacial bacteria. (Metzger Z., Dotan M., Better N., Abramovitz I., 2007, links: http://www.ncbi.nlm.nih.gov/pubmed/17709074; http: //www.ncbi.nlm.nih .gov / pubmed / 17229117).

Thus, summarizing all of the above, we can conclude that

the development and introduction into clinical practice of a dentist’s doctor, new highly effective devices and methods, will ensure a guaranteed positive result due to the pronounced antibacterial effect, which will expand the indications for preserving teeth (Politun A.M., 2010; Latyushina L.S., Tseilikman V .E., 2011).

A device for sterilizing and removing epithelium from the root of a tooth located in the cavity of a cyst is known, containing a wire electrode interacting with a diathermocoagulator made in the form of a cone-shaped spiral 3-5 mm high (RF Patent for Utility Model No. 75830 dated December 27, 2008 ., according to class A61C 19/06., author: Semennikova N.V.). This device can be successfully used in the treatment of cystogranulomatous forms of periodontitis (with a formed cyst in the periapical tissues), since it allows you to coagulate and remove the epithelium from the root of the tooth located in the cavity of the cyst. However, when using the device due to the point impact of the device with a hot working end, it is not possible to sterilize the entire root canal system (along its entire length), which is undoubtedly its drawback. Thus, this device cannot be used as an endodontic device for the final (final) preobstructural sanitation (sterilization) of the root canal system of the tooth.

The closest analogue is the prototype of the claimed endodontic device for the final preobstructural rehabilitation of the root canal system of the tooth, is an endodontic tool for sterilization of the tooth canals (Utility Model Patent No. 131609, А61С dated 09/19/2012, author: Larinskaya A.V. ), where Figure 1 shows a schematic diagram of an endodontic tool for sterilizing tooth channels, it contains a control unit (1), a timer (2), a UV emitter with a wavelength of 254-257 nm (3), a reflector (4), a cable from optical fibers (5), holder (6) and about fiber optic disposable tip

(7). The endodontic instrument is shown in photo 1, where under number 1 you can see the endodontic instrument body, number 2 is the UVC fiber, number 3 is the holder for the UVC disposable fiber tip, number 4 is the disposable fiber tip, number 5 is the power cord, number 6 is the toggle switch . Photo 2 shows an endodontic instrument for sterilizing tooth canals, where 1) is the view of the components in a non-working (passive, without access to power) condition, number 1 is a reflector, number 2 is an ultraviolet lamp; 2) - type of components in working (active, with access to power) condition, number 1 - reflector, number 2 - ultraviolet lamp. On the picture. 3 - disposable interchangeable tips (1) and fiber optic light guide (2) of the endodontic instrument for sterilization of tooth channels. An endodontic instrument for sterilizing tooth canals, in work (according to the results of an experimental study), did not fully justify the expected result, in the form of an insufficient efficiency (efficiency) at the output of a disposable interchangeable tip. Also, the disadvantage of this endodontic instrument is not ergonomics, large dimensions and heavy weight, which complicates the work with it.

In order to improve the quality of work, a lamp of short-wave ultraviolet radiation with a wavelength of 254-257 nm is built-in in an endodontic instrument (Utility Model Patent No. 131609, А61С dated 09/19/2012, author: Larinskaya A.V.), replaced on the short-wave ultraviolet radiation (UVC) LED with a wavelength of 255 ± 5 nm, shown in photo 4 (links: http://www.qphotonics.com/Deep-UV-light-emitting-diode-200-300uW-255nm.html ; http://planar.spb.ru/product/124464/), which significantly improved (output efficiency), namely, the transmission quality of focused short-wave ultraviolet tovogo light beam in the zone of interest (root canal), while not necessary to the reflectors and the element is removed from the proposed utility model for endodontic apparatus

final (final) preobstructural sterilization of the root canal system of the tooth. The proposed utility model has significantly smaller dimensions, which contributes to an ergonomic mode of operation.

The problem to which the proposed utility model is directed is to provide the possibility of final (final) preobstructural sterilization of the root canal system of the tooth in the treatment of complicated forms of caries in an ergonomic mode of operation.

The technical result is the final (final) preobstructural sterilization of the root canal system of the tooth.

The above technical result is achieved due to the fact that a useful model of the endodontic device for the final pre-obstruction sterilization of the root canal system of the tooth, containing a control unit with a built-in timer with a maximum exposure time of up to 20 seconds, according to the proposal, is equipped with a short-wave ultraviolet light emitting diode with a wavelength of 255 ± 5 nm, to which a signal is transmitted from the control unit with exposure parameters, while the LED is in turn connected to the optical fiber a disposable window tip for transmitting the generated short-wave ultraviolet radiation.

The applicant has not found sources of information containing the same set of essential features specified in the formula of the utility model, which allows us to conclude that the proposed technical solution meets the criterion of "novelty."

In photo 5, the proposed endodontic device for the final preobstructural sterilization of the root canal system of the tooth is presented, where the type of components in the working (active, with access to power) condition shows under number 1 - the case, number 2 - block

control with a timer, number 3 - place of installation of the LED, number 4 - built-in LED of short-wave ultraviolet radiation (UVC) with a wavelength of 255 ± 5 nm, number 5 - fiber optic disposable tip without fiber optic cable. Fiber optic cable is necessary to extend the working length, ease of use and does not affect the performance of the endodontic device.

The endodontic apparatus for the final preobstruction sterilization of the root canal system of the tooth works as follows: after mechanical and drug treatment of the root canal, the stopper notes the working length of the main root canal on the disposable fiber optic tip shown in photo 5, which shows a beam of transmitted short-wave ultraviolet ray (5). Then, with the “ON” button on the body (1) of the control unit panel (2), the power supply from the 220 V network is supplied to the control unit (2), the required exposure is set, from 2 to 20 seconds (this exposure allows sufficient sterilization to be achieved). At the same time, the timer of the control unit (2) is in standby mode. The disposable fiber-optic tip (5) is introduced into the main canal to the working length and UVC is activated, thereby irradiating the channel walls, while the emitting disposable fiber-optic tip is gradually moved backward from the apical opening to the mouth of the canal in increments of 0.3-0.5 mm processing the corresponding section of the root canal. After removing the disposable fiber optic tip (5) from the mouth of the trunk channel, the UVC supply is turned off.

The START button of the control unit (2) transmits a signal with exposure parameters to an ultraviolet light emitting diode with a wavelength of 255 ± 5 nm (4), which in turn transmits the generated short-wave ultraviolet radiation (3) to fiber optic

a disposable tip (5) that directly interacts with the irradiated intra-channel zone within the time period specified by the timer (2).

Using the proposed utility model will allow to achieve high-quality sterilization of the entire root canal system (along its entire length), as it causes the total death of microorganisms. Small dimensions allow you to work in ergonomic mode.

Claims (1)

An endodontic apparatus for the final pre-obstruction sterilization of the root canal system of the tooth, containing a control unit with a built-in timer that limits the maximum exposure time to 20 seconds, transmitting a signal with exposure parameters to an ultraviolet light emitting diode with a wavelength of 255 ± 5 nm, which is connected to a fiber optic disposable tip.

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