Dental post made of radiopaque composite

Details Dental post made of radiopaque composite Dental post made of radiopaque composite

Filed on

1999-06-01

Date issued

2001-05-01

Examiner

Wilson, John J. (Department: 3732)

Patent Class

Dentistry

SubClass

Method or material for testing, treating, restoring, or...

SubSubClass

Crown

Other Related Categories

C433S228100

Type

Reexamination Certificate

Status

active

Patent number

06224377

Description

ABSTRACT:

The subject of the present invention is a dental post made of a radiopaque composite.
Composite corono-radicular dental posts intended for reconstructing the crowns of decayed teeth are increasingly tending to replace the metal-alloy posts used for decades.
This is because posts made of a precious or nonprecious alloy have several drawbacks:
they may be the seat of galvanic currents which create corrosion phenomena, with the liberation of metal ions;
their elastic modulus is ten times higher than that of define so that, during the masticatory function, by transferring the forces to which they are subjected to the dental member they may cause fractures in the root and the loss of the tooth in question.
Composite posts, consisting of a resin matrix in which reinforcing fibers are embedded, do not have these iatrogenic drawbacks.
Composite posts have been described in Patent FR-A-2,626,167, FR-A-2,588,181 and EP-0,432,001.


REFERENCES:
patent: 4474942 (1984-10-01), Sano et al.
patent: 5741139 (1998-04-01), Sicurelli, Jr. et al.
patent: 6012924 (2000-01-01), Reynaud et al.
patent: 2824214 (1979-12-01), None
patent: 0432001A1 (1991-06-01), None
patent: 2753365 (1998-03-01), None
patent: WO96/26686 (1996-09-01), None

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