FR2598076A1 - Band for reconstructing stumps or teeth, with lateral opening - Google Patents

Abstract

The invention relates to a band for reconstructing stumps or teeth, possessing a device for lateral (longitudinal or oblique) opening. This device consists in laterally creating an area with different strength such as for example: - a precutout of the base material by impression forming, - the insertion of another material into the base material, so that, after use, the band may be opened in order to facilitate its extraction without damaging the subjacent material. The band according to the invention is applicable in dental surgeries.

Description

 The present invention relates to a stump or tooth reconstruction ring having a lateral opening device facilitating its extraction without risk of deterioration of the underlying material.

 All the stump or tooth reconstruction rings, whether copper or plastic, are made in one piece and have no possibility of lateral opening. These rings, which make it possible to reconstruct broken or severely dilapidated teeth by the use of composite materials, amalgams or others, are used when the use of a simple matrix proves to be insufficient.

Once the composite or amalgam has been introduced strongly into the ring, it must be removed. However, given the pressures used, to extract it it is necessary to cut it laterally either with a strawberry or with a scalpel.

The use of such instruments almost systematically creates a risk of deterioration of the stumps or reconstructed teeth. In addition, its extraction without cutting creates a risk of loosening of the material concerned.

It is to avoid this drawback and to facilitate their extraction that rings with the possibility of lateral opening have been imagined and designed in the invention which is the subject of the present.

 According to the present invention, the ring has a lateral opening device (longitudinal or oblique) consisting in producing a lateral zone of different resistance.

According to a first embodiment of the invention, this zone can be produced by simple or double precut (punching).

According to another embodiment of the invention, this zone can be produced by inserting, in the base material, another material of different resistance. Thus produced, this ring can simply be opened after use to facilitate its extraction without risk of deterioration of the tooth or of the reconstructed stump.

 The invention will now be described in more detail with reference to the particular embodiments given here b by way of example and shown in the accompanying drawings.

In these drawings: - Figure 1 shows a ring on which appears the longitudinal lateral opening area; - Figure 2, shows the oblique opening area; - Figure 3, the double punching solution with tongue; - Figure 4, the solution with another material inserted.

 The ring (1) shown in the figures is generally made of copper or plastic. It can of course be made of any other material.

The dimensions of the rings are generally between 4 and 12 millimeters for the diameter and are of the order of ten millimeters for the height. As for the thickness of said material, it is close to a tenth of a millimeter.

The zone of least resistance can be longitudinal (2) or oblique (3). It can consist of a pre-cut, simple (2) or (3), or double (4), obtained by punching or drilling.

In the latter case, a tongue (5), integral with the zone (4) may be provided to facilitate the taking of the corresponding strip for its separation from the rest of the ring.

This tongue may have an opening to facilitate its grip with an instrument.

The precut operations (2), (3) or (4) can be carried out on rings before or after shaping.

The zone of different resistance can also be produced by the interposition of another material (6), of different resistance, in such a way that it is removed by pulling on it, thus making the ring concerned open. This is introduced into the ring during manufacture. It can be in the form of a wire or a strip. One of its ends can exceed the ring to facilitate its grip.

 Of course, the invention is not limited to the embodiments described and shown for which we can provide other variants and use other materials without departing from the scope of the invention.

 The ring according to the invention sees its application in dental offices.

Claims (4)

 1- Ring (1) for restoring stumps or teeth, from a composite, amalgam or other material, characterized in that it has its own lateral, longitudinal (2) or oblique (3) opening means ).  2- ring, according to claim 1, characterized in that the opening means consists in producing a lateral zone of least resistance obtained, for example, by a simple pre-cut pe (2) or double (4) of base material.  3- ring according to claim 1, characterized in that the opening means consists in producing a lateral zone of different resistance obtained, for example, by the insertion of another material (6) in the base material.  4- ring, according to one of claims 2 or 3, characterized in that a means (5), integral with (4) or (6), facilitates the opening of the ring.