5. Fabricate the Stent Baseplate

Plaster separator (cold mould seal) is applied to the plaster model. A 1 mm thermoforming baseplate, such as the Infinitas Baseplate which is available in Round or Square versions (DB10-0039R or DB10-0039S) is placed on top of the assembled model, abutment and guide cylinder components. It is then pressure-formed onto the model using a machine conventionally used for retainer fabrication. The baseplate now incorporates the guide cylinder and they are removed en masse from the model and abutment. The baseplate’s labial and lingual edges are trimmed, and the superficial end of the guide cylinder is opened by cutting through the covering baseplate layer.
The mini implant insertion site is exposed by relieving 2-3 mm of the fitting surface of the guide cylinder and adjacent baseplate. This provides open visual access of the insertion site without detracting from the positive guidance that the cylinder provides for the screwdriver. It also makes it easier to remove the stent from over the fitted mini-implant head when the latter is not yet fully seated (during clinical insertion).