SE528463C2 - Construction for dental use when repairing dental cavity - Google Patents

Abstract

A method in dentistry to improve and simplify the making of fillings and core-buildups with dental composite. A prefabricated cylindric construction with a centric hole, made of dental composite is put together with light cured composite to be incorporated in the filling/core. Composite shrink when it's beeing cured. The shrinkages will be reduced when used together with allready hardened composite. The construction, and therefore the filling, is also reinforced with a net of glassfibre.

Description

528 463 l THEORICAL DESCRIPTION OF PREFABRICATED COMPOSITE CONSTRUCTION A puck (prefabricated composite construction) is a relatively simple construction. The materials included are those that are already used in dentistry. The composite material must be equivalent to those currently found on dental marmalade and of such a nature that it is suitable to mix (glue to) these. The idea is that: the puck should be reinforced (reinforced) with glass fi bare tissue. Fiberglass has for many years been used together with composite to strengthen repairs and bridge constructions in dentistry.

A puck can be similar in shape to an ice hockey puck, with the difference that it has a central, cylindrical hole.

In other words, the puck is a cylinder with a cylindrical hole in the middle. Its outer diameter can vary from two to seven mm, the centered hole between 0.2 to 2.2 mm. The side (height) of the cylinder should be between 0.5 and 4.5 mm. All variations within the above dimensions must be possible.

The puck is reinforced in the horizontal plane of the cylinder with two different directions on glass fi bern. The fibers should lie crosswise, ie. at a 90 degree angle to each other. Probably a finished glass fabric with such a (cross-lying) pattern can be considered. The quality and wire thickness of glass ska should be of the type used today, for example. dental composite bridges (Targis-Vectris, m. fl.). The arrangement should lie at one end of the puck, completely or partially embedded in the composite.

The surface of the puck should have a certain roughness, which is achieved by grinding or blasting. This is to create the possibility of good adhesion to the composite mass it is to be embedded in. The surface of the puck must be able to vary with different roughness.

Manufacture of puck can certainly be done in different ways. The easiest way if glass is included is to cast a larger composite plate. Composite pulp of a chemically or light-curing type is placed in a mold with a certain height, glass fi bervñv is pressed down, the material is cured. From this plate the puck is "sawn" out after the central hole has been drilled thirstily.

You can also cast a longer "tube" in composite. This is then sawn into slices that correspond to a puck.

It is probably possible to utter each puek in a separate small form, but it seems less effective.

To facilitate the dentist's handling of the puck, it can be delivered (packaged) together with resin / bonding that is not hardened. With an already treated surface, you avoid this step during the dental treatment.

Otherwise, the dentist chooses his own resin / bonding to apply to the puck before placing it in the uncured composite.

Drawings of the puck can be seen on the accompanying sheets. The drawings illustrate a puck, with a central cylindrical hole, from above (fi g. La) and from the side (fig. Lb). The scale is l0: l. Furthermore, the puck is seen in application for filling the dental cavity (fi g. 2) and column construction (fi g. 3).

Claims (4)

528 463 3 PATENT REQUIREMENTS Design for dental use in the repair of dental cavities, to be integrated with liquid dental composite material, characterized in that the construction consists of one or more cylindrical parts with a central through hole, the size of the cylinders being adapted to the dental cavity and the diameters of the holes being so selected that the cylinders can be placed over prefabricated root canal paths for column construction by means of a dental implant. A construction according to claim 1, characterized in that the diameter of the cylinder is two to seven millimeters, its height 0.5 to 4.5 millimeters and the diameter of the hole 0.2 to 2.2 millimeters. Construction according to Claim 1 or 2, characterized in that the cylinder is made of reinforced, hardened denpl material. Construction according to the preceding claim, characterized in that the construction has a raw surface structure to facilitate adhesion with surface dental composite material.