SU1611329A1 - Method of checking obturation of apical foramen - Google Patents

Abstract

The invention relates to medicine, namely to dentistry. The aim of the invention is to improve the accuracy of the method. The goal is achieved by determining the value of the short circuit current, and the moment of obturation - by the short circuit current drop by a factor of 9-10. A positive effect is evaluated by an improvement in functional results.

Description

The invention relates to medicine. namely, to dentistry, .and can be used in the clinic of therapeutic and pediatric dentistry with endodontic manipulations.

The purpose of the invention is to improve the accuracy of the method.

The method is carried out as follows.

The root canal is prepared for sealing by known methods. At the same time, it is necessary to thoroughly dry the channel with ether, then a passive electrode-clamp attached to the current source and a signaling device is fixed to the ear lobe. The active electrode is introduced into the channel of the drift drive until a short-circuit current appears (25–30 µA). The active electrode-filler electrode is also inserted into a wide channel with an undeformed root also before the appearance of a short-circuit current (25–30 µA). On the drilbore introduced into the channel, a place is located at the level of the mouth of the channel, i.e. the distance from the mark to the blade is equal to the length of the channel. Seal the canal with any of the filling masses. The obturation of the apical aperture of the canal is monitored by introducing a driel collector — the active electrode (7 A) for the entire length so that the mark on the drip collector installed earlier is at the level of the mouth of the canal. When obturation above the neck aperture, the magnitude of the current. the circuit will be 9–10 times less (2–3 μA) of the short-circuit current (25–30 μA). After that, the drier is removed from the canal and the filling material is slightly tamped into the canal.

In the first 1 dental canals with unformed roots, the control of the obturation of the apical aperture is carried out in the process of canal filling with an electric canal.

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During the ototuration of the top hole, the current value changes in the same way as in the first case, i.e. will be 10 times less, which will be 2-3 μA.

When carrying out the proposed method in all cases, it is important to achieve first the occurrence of a short current for the M1 tissue by introducing the active electrode of the drilbor (or the Lonapollector canal electrode on the teeth with unformed roots) into the tooth canal. At the same time, the electrical circuit is closed: The active electrode of the periodon ira tissue of the periodontal tissue is the soft tissues of the mouth bone the soft tissues of the face of the mo of the ear is a passive electrode clamp

If, when inserting dril1 boron of the auxiliary electrode into the canal of the tooth, the current of Chien is less than μA, this indicates the structure of the apex of the tooth root (curvature and contraction of the root in the region of the aperture and: TA). with the help of the same Yrilbore - active electrode. The appearance of a short-circuit current (µA) will indicate the opening of the upper end of the hole. The length of the channel Mark with a movable tag, located on the howler on the drilbor.

Thus, the active electrode In the proposed method (drilbor), you complete three important functions: with it you first determine the reliable opening of the tip opening and mark the length of the channel, which is usually done in dental practice with the help of patient-unsafe and medical personnel of X-ray control, with his help, then determine the reliability of obturation of the apical aperture of the tooth, whereupon the drilbor active electrod after the filling of the channel is inserted into the whole If the top hole is reliably obturated with filling / ground, then the drilbor, located in the area of the top opening, will be separated from the periodontal tissues with a layer of filling material. With experimentally selected parameters of the device pax, this will be the only condition where circuit current

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decreases in times, t, e, up to 2 3 MI: / ,, If the channel is incompletely obturated with a sealing weight, the drilbor will be in contact with the near-dorsal tissues with periodontal tissues and the E value of the circuit will still be equal to the short circuit current .

Using only a canal fill as an active electrode is even more convenient, since it facilitates the work of a doctor (introducing a canal into the canal to a canal before the appearance of a short circuit current of μA), sealing the canal with one of the sealing masses to complete obturation of the tip opening, which will be seen a decrease in the magnitude of the current by a factor of 9–10 (a current equal to 2–3 μA appears). However, it is possible to use a filler in the form of an active electrode only when filling wide channels on permanent teeth with unformed roots or on milk teeth with absorbable roots.

The signaling device on the basis of the low-frequency amplifier that is included in the device supplies a signal whose trigger current is set to μA (for a paste with zinc oxide).

The magnitude of the actuation current is determined by the physicochemical properties of the pastes used and remains constant. This makes it possible to compile tabular data on the magnitude of the current depending on the type of filling masses used,

The X-ray control performed under the obstruction of the apical opening of the canal of the tooth in all cases, carried out by means of an electro-electrometer. method, and the parameters of the alternating current pcA during the obturation of the opening of the channel, μA, as well as the ratio between them, are the electrometric evaluation of the proposed method,

PRI m e; p. Sick B, 30 years old, complained of mild pains in the upper second tooth on the right, discomfort during snacking. Clinically and radiologically diagnosed with chronic fibrous periodontitis. After drug therapy and drying, the scientific research institute carried out a canal filling.

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Using the proposed O1 about method. A passive electrode is fixed to the ear lobe, and a drift gate of the active electrode is inserted into the tooth canal until

effects of short-circuit current (25 μA), the length of the channel was noted on the drilbore under the Vision mark. The other filter was replaced by a canal-filling machine, introduced into the channel, the current on the instrument is 20 μA. This means that the canal filler does not reach the top of the tooth. The canal filler is filled with paste, introduced into the channel, sealed and monitored by the instrument readings. The current in the circuit gradually decreases, with readings of 2.0 µA, end-to-end seals

biting The canal-filling machine is replaced by a drilbore, a cotton ball is compacted with a sealing mass at the mouth of the channel, and t, e is pushed through the channel. The obturation of the apical aperture is monitored by introducing the drip box into the channel until the mark is previously installed. The instrument reads 2.5 µA, the signaling device responds with a beep.

Thus, according to electrometry data, it is concluded that the filling mass is at the level of the apical aperture and occluded. To confirm this, X-ray monitoring was performed. X-ray of the area of the treated tooth

the filling mass is brought to the apical opening of the tooth,: t; e,

X-ray control confirms that the current drop from 25 μA (Ti-e, 10 times)

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This is a testament to the quality assurance of bating.

The proposed method of obturationing the apex of the root canal of a tooth can be a reliable method of selecting when filling the canals of the teeth in adults and children in polyclinic conditions, especially when treating teeth under general anesthesia. The proposed method may be the only possible method - control of the obturation of the apical aperture during the treatment of teeth in field conditions, conditions of schools, children's combines, in the treatment of patients with oncological diseases, in the treatment of pregnant women and: t; D || Benefit offered

by blocking the root canal of the tooth root, the dentist can simply, quickly and reliably fill the canal without using patient unsafe

and medical staff radiological control.

Claims (1)

Invention Formula The method of controlling obturation of the apical root canal of a tooth by measuring the resistance of an electrical target, characterized in that, in order to increase the accuracy of the method, the value of the short circuit current is determined, and the moment of the blocking is determined by a decrease in the short circuit current by a factor of 9-10. Editor A. Shandor Compiled by: L, Rzhevska Tehred L. Oliynyk 1Spellor M.Maksimishinets Order 3783 Circulation 560 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. D. 4/5 Subscription