This guide allows the dentist to become familiar with the different phases required to perform the new STEGIX technique. The STEGIX bridge has three steps which are perfectly controlled : cavity, impression, and filling.
Step 1: Cavity
The first step is to excavate cavities in abutment teeth that are larger than the anchor. A gauge may also be used to help the achievement of these cavities.
Step 2: Impression
The second step is to take two impressions in alginate. This is followed by the choice of the tooth color, or testing prefabricated teeth directly in the mouth, with the ability to make corrections already, and then send to a certified STEGIX dental laboratory with the lab sheet.
Step 3: Filling
After the bridge is received from the STEGIX laboratory with the transfer guide, the dentist uses this for the third stage his usual adhesives and composites. As shown below, the anchors are positioned and held in place with the transfer guide.
Once in place, the difficult Class II cavity ( repair to two or more tooth surfaces in molars and premolars, such as the mesioocclusal [MO] or the distoocclusal [DO] surface ) is converted into an easy Class I cavity (repair to occlusal surface alone ). The light-cured filling only remains to be directly shaped in the cavity preparation with the anchors inside.
the accuracy of alginate impressions is enough
It is possible to create cavities after the fabrication of the STEGIX bridge to have only one operating time: the occlusal edge of the transfer guide will help to mark and to drill the cavities.
The dental laboratory can place anchor rods in composite resins inlays. This is not recommended because the simple and rapid technique loses advantages on the cavity preparation, the choice of impression material and on the seal, etc..