Angulated implant screw channel Angulated screw channel can be milled from any STL of custom abutment, screw retained bridge ... Mayka will guide you with a wizard step by step function. It is very similar to the standard implant mode. The feature is available for all user with the standard implant option. The new feature doesn't require new Tools for zirconia milling. The strategies are available from software updates in the machine section.