Published in November 2001
in the website
Patients' Section
Prosthesis: the different kinds of fixed and removable dentures.Advice and suggestions for patients.

* Physician and Surgeon specializing in Dentistry. Periodontist.
** Dentist - Orthodontist and Pedodontista

Piazza Repubblica 4, 09129 Cagliari, Italy
tel. +39 070 498159, fax +39 070 400164
web site

The pivot tooth stump

Fig. 1
Root of the upper right incisor fractured at the level of the gum.
Fig. 2
A pivot tooth stump is made with a special resin called Duralay.
Fig. 4
The core is cemented to the root: the core is inside the previously prepared root canal and reconstitutes the destroyed part of the tooth, which is the stump.
Fig. 3
The resin is cast with solid gold and the gold core is ready.
Simply stated, the Duralay core is placed in a cylinder with a lining of phosphate ligand which, after hardening, is placed in an oven at about 800°C to melt the resin and leave an empty space which is then filled with yellow gold. This is then cleaned and sand-blasted and is ready for cementing.
Fig. 5
The gold-platinum cast (see relative paragraph) is positioned on the core.
The part in porcelain is constructed on the gold-platinum cast. (See relative paragraph).

Fig. 7
With cast gold cores all six of the upper front teeth, from canine to canine, have been saved.

Fig. 8
A fixed gold-platinum-porcelain prosthesis on the cores with a prosthesis having a metal skeleton with precision attachments, milling, drive bars and coulisse (see relative paragraph).
The aesthetic result is evident.