CS275777B6 - A method of filling the dental root canal with a tool for determining the root canal length - Google Patents

Abstract

The solution concerns a method of filling a dental root canal using an instrument for determining the working length of the root canal with applied plastic filling materials that solidify by chemical reaction, using the electrical conductivity of these plastic materials and subsequently applying the active electrode of the instrument for measuring the working length of the root canal, while the passive electrode is applied to the oral mucosa to determine the total impedance, after which the conical part of the rotating instrument with the applied plastic material is introduced into a part of the root canal and after reaching the total impedance, the instrument is switched off and removed.

Description

The invention relates to the precise filling of a dental root canal with plastic filling materials with the aid of an electrical device.

To fill the dental root canal, a filling material is used, which is introduced into the canal in a plastic state by a rotary filler. Here, the filler material changes into a solid by a chemical reaction over a period of time.

In the conception of the Czechoslovak and European endocia, the root filling is a cure. It is not indifferent the location in which the drug will be applied. Even the most successful determination of the exact length of the root canal - i.e. the length for which the canal is treated and filled - does not solve the problem of the exact distribution of the root canal. The spiral of the rotary filler acts as an inclined surface, which drives a plastic root filling in front of it, which can then be easily pushed over instead of its desired final position. On the contrary, such a filling result then leads to damage to the tissues from which the healing processes are expected, and the tooth is then more endangered by the treatment procedures than by the disease being treated. Oindy, the root filling is pushed into the vicinity of the root tip, and complications can occur, such as pushing the filling material into the lower jaw canal or into the upper jaw cavity at the top.

The methods and means used so far to fill the dental root canal with plastic filling materials did not solve these threats to the patient by their own treatment. To date, no method has been described to rule out these complications.

According to the contents of U.S. Pat. No. 4,525,147, it is possible to precisely fill the root canal with specially conductively modified gutta-percha pins, which is a combination of a non-conductive gutta-percha and graphite fibers. According to the aforementioned U.S. Pat.

However, even the addition of carbon fibers does not address the requirement for a long-term therapeutic effect of the root filling. However, as stated in the introduction, only plastic fillers which solidify by a chemical reaction meet this requirement. The applicability of these plastic filler materials solidifying by chemical reaction using their conductivity has not yet been assumed. It has now been found that it is not necessary to specially and costly treat otherwise equally unsatisfactory gutta-percha, but it is possible to use chemical fillers which solidify by a chemical reaction with a much better result if their electrical conductivity is used.

The invention therefore relates to a method for filling a dental root canal with a root canal working length measuring tool, the method comprising applying a plastic filling material evenly to a conical part of the root canal working length measuring tool adjacent to the tool and applying it to the tool handpiece. the active electrode of the instrument for measuring the working length of the root canal, while the passive electrode is placed on the mucosa of the oral cavity to determine the total impedance.

The method of accurately filling a dental root canal according to the invention consists in connecting an electrical device for determining the working length of the root canal to a commonly used rotary filler clamped in the handpiece of an electric drill.

The electric device for determining the working length of the root canal has two electrodes, one of which is clamped on a handpiece with a rotary filler and the other is slid as a plexiglass clamp on the mucosa of the oral cavity.

The work of filling the root canal according to the invention takes place in two stages. In the first phase, the active electrode represented by the rotary filler is placed on the edge of the gums and in this case the device automatically measures the impedance of the closed electrical circuit and stores its value in the memory needed to perform the power. The resistance is now set on the device according to the selected filling material, which the device adds to the previously automatically detected impedance. In the second phase, a filler is introduced while the rotary filler is running

CS 275 777 B6 2 mass, the filler being introduced only to about half the length of the root canal. As soon as the desired final filling of the filling is reached, an acoustic signal sounds, after which the operation of the rotary filler is stopped and removed. Completion of the second half of the fill is no longer critical.

According to the method according to the invention, the placement of the filling material with an optimal therapeutic effect is achieved.

Claims (1)

PATENT CLAIMS A method of filling a dental root canal with a root canal working length measuring tool, characterized in that the plastic filling material is applied uniformly to the conical part of the root canal working length measuring tool and an active working electrode is applied to the tool handpiece length of the root canal while the passive electrode is applied to the mucosa of the oral cavity to determine the total impedance, after which the conical part of the rotating instrument is inserted into the part of the root canal and after reaching the total impedance the instrument is switched off and removed.