Another important aspect of the original Straumann® Tissue Level Implant System is its biomimetic design. The Standard type implant has a machined transgingival part continuous with the endosteal screw. The vertical dimension of this section gives a height of 2.8 mm (Standard implants), which is in the range of the mean biologic width of natural teeth3, 4. Thanks to this design the inevitable microgap between the implant shoulder and the abutment or restoration can be positioned at the gingival margin – away from the bone. Moreover, the smooth surface of the transgingival collar facilitates hygienic maintenance, which helps to reduce the risk of peri-implant infection and disease (see next section)5.
According to Professor Buser, after bony remodeling during the osseointegration process the micro-rough (SLA®/SLActive®) part of the implant should be completely covered with healthy bone. This applies to placement both into native or augmented bone and is an important prerequisite for long-term peri-implant tissue stability.
With more than 35 years of clinical application, Straumann® implants placed according to the Tissue Level concept are among the best documented in the market. Over a period of 10 years, clinical studies have demonstrated high success rates of up to 98.8 %6. This has been shown in studies both by university- and practice-based groups, with up to 4,591 implants in the follow-up6-10. The implants have also proven successful in various indications, e.g. full-arch rehabilitations in the maxilla11.