CAD/CAM Magazine

18 I I clinical technique _ implant-prosthetic troubleshooting _Implant-prosthetictroubleshootingusually starts at an advanced stage of the implant-pros- thetic treatment, i.e. when implants have already been inserted, and the next step is the insertion of prostheses on the artificial abutment teeth. This point in time is extremely unfavourable for several reasons, one being that—owing to the already completedsurgicalphase—thereisnoopportunity for intervention and modification of the implant placement, and the other reason being that the patient feels he or she is on the verge of a success- fully completed treatment and does not realise that difficulties may now arise, which in extreme casescouldresultinfailureoftheentiretreatment. This development usually ends in mutual accusa- tions and forensic disputes. _“Incorruptible”—The dental master model In a worst-case scenario, it will not become apparent that the inserted implants cannot be CAD/CAM 2_2011 Figs. 1–4_The former prosthesis (with two maxillary implants); note the discrepancy between the translucent templates and the axis of the plastic front teeth. Fig. 4Fig. 3 Fig. 2Fig. 1 Implant-prosthetic troubleshooting— When dental technicians and dentists break into a sweat! Authors_ Dr Georg Bach & Christian Müller, Germany