DE1566289A1 - Space-holding pin for root canals intended to hold pin teeth - Google Patents

Description

Spacer pin for root canals intended to hold pin teeth The invention relates to a placeholder pin for intended to receive pin teeth Root canals.

When preparing to insert a pin tooth in the area the front teeth was previously proceeded in such a way that after anesthesia or killing and Remove the nerve the root canal is expanded by drilling and then using a slowly hardening mass was filled. Dann was initially the reaction of the tooth and waited for any signs of irritation to subside. So far then After a few days, most of the root filling is removed again around the root post of the pin tooth to be inserted for taking impressions and obtaining the model can. It must be on. the wort tip closed with a silver pen Leave a short piece of the filling to avoid infection.

Basically, the aim is to use the pen for reasons of strength to choose as long and thick as possible.

This procedure has a number of hazards and is both for the dentist as well as the patient is fraught with a very unpleasant risk. It can If the roots are narrow, there will be lateral perforation, or if the roots are too deep Drilling the remainder of the root filling left at the root tip to protect against infection removed again. The pen is often used out of fear of such consequences too short, resulting in a significant loss of strength and durability of the Can result in pin tooth.

So far the procedure has been that after removing the tooth nerve a Very thin canal widening instrument pushed up to the tip of the root (apex) will. Scale instruments or measuring handle instruments were used. The former have a color marking or scale, the second one that can be slid on the shaft Plate. Orientation takes place according to the tooth cutting edge, you remember the scale mark or place the plate on the cutting edge and screw it then stuck to the shaft. This measure will be the same for a long time, but will vary in strength transferring increasing instruments and in this way the root canal without endangering of the Apei, closed in the usual way with a silver pen. Afterward however, the tooth crown must be cut off, thus providing the exact orientation is eliminated so that the above-mentioned sources of danger occur.

It is the object of the invention to completely overcome these difficulties avoid by inserting a root filling into the freshly laid root filling according to the invention and easily removable placeholder pin in the form of a tightly wound after the tip to tapered cylindrical spiral the diameter of the root canal is used. The spiral can be made from a thin wire or from a plastic thread, preferably on polyamide bases.

In the latter case, the windings are made of wax or synthetic resin glued. Instead, a correspondingly shaped, pointed-conical plastic injection-molded body can also be used be used. For the good Leadership can open the front of the Spiral must be dimensioned so that it fits onto one of the lugs of the Apex used silver pen fits.

The spiral must be wound so tightly that it can bend laterally remains, but in the thrust direction when inserted into the filled root canal remains sufficiently rigid.

After the root canal filling, a canal extension instrument is made Standardized wire spiral introduced according to the invention, the tip of which was previously cut off was that the desired height to be left in the root tip and the silver pin containing root filling is obtained. The spiral leaves itself after the hardening Root filling turn by turn also and pull it out, in the form of a practically smooth wire. The root canal is now ready to take an impression for the post free in the maximum possible length. As an exception, it has to be expanded again this is possible without endangering the apex region, as the exact measure the free length of the tumble canal is exactly reproducible.

The spirals are provided in standardized diameters that exactly match those of the root canal enlargement instruments, so that the dentist has the right spiral for each drill immediately to hand when handling.

An exemplary embodiment of the invention is shown in the drawing and specifically shows: FIG. 1 a longitudinal section through one to be provided with a pin tooth Front tooth, Fig. 2 the tooth of Fig. 1 after drilling out and inserting the root filling, FIG. 3 shows the tooth of FIG. 2 after inserting a placeholder pin according to FIG Invention, 4 shows an enlarged longitudinal section with the root canal Stirred in place holding pin consisting of a spiral, the front end of which stirred on a pin of the Silberstirtes closing the root tip 1st, FIG. 5 shows the illustration of FIG. 4 with the placeholder pin partially extended.

The root canal 1 of the front tooth of Fig. 1 was made in the usual way after the pulp and nerve 2 have been removed, drilled open as shown in FIG and provided with a root filling 3. Then the one shown in Fig. 5, preferably consisting of a spiral spacer pin 4 in the Wurzelfüllüng 3 inserted. The tip 5 of the Platznalteststifte was cut off beforehand so that that the desired height of the to be left in the root tip and in known Way, a root filling residue 7 containing silver pin 6 is preserved. That The upper end of the root canal is then covered with a provisional Closure 8 covered.

After the root filling 3 has hardened, the Platznaltespirale 4 conveniently pulling out and pulling out, turn by turn, in the form of a practical smooth wire. »The root canal 1 is now located for the exact impression for the root post of the pin tooth to be used, not shown, in the maximum possible length free. Even if, as an exception, the root canal 1 is subsequently expanded again must be, so this is without endangering the silver pin 6 with the remaining filling 7 containing apex region possible, ds the exact dimension of the free length of the root canal, that is available for the post to be inserted at any time is exactly reproducible by means of the known length of the placeholder pin 4.

The placeholder pin 4 can consist of a tightly wound spiral consist of a wire of e.g. 0.2 mm 0, or a plastic thread, preferably based on polyamide, be wound, being the turns be glued by wax or synthetic resin.

Finally, a correspondingly shaped pointed body with a pointed cone can also be used made of plastic can be used.

The enlarged view of the root canal 1 with the apex region - Fig. 4-5 - shows the inside the remaining filling 7 for closure of the nerve canal 18 inserted silver pin 6, which is provided with an attachment pin 9 is on which the front end 10 of the space holding spiral 4 is guided. PATENT CLAIMS:

Claims (5)

PATENT CLAIMS: 1. Placeholder pin for holding pin teeth certain root canals, characterized by a freshly placed root filling (3) Insertable and easily removable, tightly wound and at the top conical, cylindrical spiral (4) from the diameter of the root canal (1). 2. placeholder pen according to claim 1, characterized in that the Spiral (4) consists of a thin wire. 3. placeholder pen according to claim 1, characterized in that the Spiral (4) made of a plastic thread, preferably based on polyazide, the turns of which are glued together with wax or synthetic resin. 4. placeholder pen according to claim 1, characterized in that as Platzhaltestift (4) a pointed conical plastic injection-molded body iit spiral-shaped Reinforcements is used. 5. placeholder pen according to one of the preceding claims, characterized characterized in that the front opening of the place holding pin (4) au @ a shoulder pin (9) of the permissible closure of the apex, usually the pre-ended silver pin (6) fits.