above the gums


Practical guide to the dentist

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.

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Notes :

  • There is never a complicated case with the principle of anchoring cavities, even if the abutment teeth have divergent axis.
  • For an important anchor, a cavity may extend through a trench to two adjacent abutment teeth.
  • Folding the anchor rods is possible in the dental laboratory to allow adaptation to the 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.

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Notes :

  • The transfer guide is a partial print of the intermediate element and the abutment teeth. It allows for the precise positioning of the bridge during the final STEGIX installation even if the anchors are not in contact with the cavity walls. This is why:
    • 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.

  • If a future pillar tooth requires a new important filling on the proximal prosthetic side in gingival direction, it is best to proceed in two stages; first restore the tooth, and then reopen for anchoring. The risk of overflow will be eliminated. Any new filling elsewhere on a pillar tooth can be made simultaneously bonding the bridge STEGIX.
  • 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..