There are several solutions at the disposal of dental technicians to build a superstructure, crown or bridge for a given assignment. These include using a moulding technique or CNC manufacturing. When using CNC technology, the screw channels - for example the tilted screw channels of Vario-Tube or Vario-Dock - are built into the mould in the computer-aided planning phase.
In the case of a traditional moulding technique, the technician forms the frames by using wax and moulding templates. With such systems so far only straight bore holes have been possible. Using Vario-Cast moulding templates, however, bore holes can be created at any preferred position or angle.
When creating arched screw channels, the technician uses a screw to ﬁx the main body of the multi-part moulding template into the corresponding shape of the gypsum sample. Then the sphere-formed elements are connected one by one, until they reach the required height and axis correction.