Work Instruction GUIDE-SYSTEM

Guide System 10 A. IMPRESSION TAKING FOR ADEQUATELY PARTIALLY EDEN- TULOUS JAW If the existing teeth can guarantee sufficiently stable and repositionable fixation of an x-ray template, an impression is taken of the oral situation and a master cast is fabricated. B. IMPRESSION TAKING FOR EDENTULOUS OR INADEQUATELY PARTIALLY EDENTULOUS JAW In the case of an edentulous or partially edentulous jaw where the residual teeth do not guarantee stable and/or reproducible fixation of an x-ray tem- plate, a sufficient quantity (3 units minimum in an edentulous jaw) of “tem- porary implants” (snap-action mechanism with matrix) are first set so as to be able to fix the x-ray template precisely in the mouth at a later stage. The positioning must be selected so that the best possible mechanical stability is achieved and later insertion of the final implants is not obstructed. An impression is taken of the oral situation with the impression components belonging to the temporary implants (depending on the temporary im- plants used) and a master cast is fabricated with corresponding analogs. INTERORAL SCAN As an alternative to conventional impression taking with elastomers, it is also possible to realize the oral situation with an intraoral scan. APPLICATION IMPRESSION TAKING/INTRAORAL SCAN