CONELOG PROGRESSIVE-LINE Surgical procedures

6 CONELOG ® PROGRESSIVE-LINE IMPLANT As a matter of principle, the implant should be planned by the team and be based on the prosthetic therapy («Backward Planning»). The following aspects should be taken into account during planning: LEVERAGE RATION ON IMPLANT The loading of the implant-bone interface is determined by the leverage ratio from the osseointegration-related resistance to the prosthetic load arm (equal to the supracrestal implant length plus crown length from the implant shoulder). If the implant length (IL) is less than the length of the crown (CL), measures must be taken to reduce loading (e.g. using prosthetic splints). If leverage ratios on the implant are unfavorable, a longer implant must be selected. The ratio of crown length (CL) to implant length (IL) should be 0.8:1maximum. Implant distribution should be structured in such a way that spanned segments are kept small. Preparation of the abutment must ensure the common insertion direction of the crown block/bridges. The implant- abutment connection may not be altered. IMPLANT POSITION PLANNING IL (Implant length) CL (Crown length) DISTANCES TO ADJACENT STRUCTURES VERTICAL IMPLANT POSITION The recommendations for the distances to be maintained from adjacent structures must be observed to allow wound healing to proceed optimally and for hard and soft tissue to develop optimally during the healing phase. The recommended distances for determining the vertical implant position are shown in the diagram. These must be adapted to the clinical situation. The implant length must be sized to leave adequate bone (at least 1 mm) around the implant. Vertical implant position Behandlungskonzepte 2–3 mm Implant shoulder up to the cemento-enamel junction 1.5–2 mm 1.5–2 mm 5 mm Bone level up to the approximal contact point 3–4 mm Implant shoulder up to the gingival margin