Conducted in collaboration with the Medical University of Graz in Austria, a new long-term study with over five and up to 12 years of follow-up found no peri-implantitis around any of the two-piece Patent dental implants (Zircon Medical Management) placed. It is the second long-term study to yield these results. But how does Patent avoid chronic tissue inflammation over the long term? The Zurich-based dental implant specialist Dr Roland Glauser answers this question in this interview. In the pursuit of comprehensive implantology, he has dedicated many years to independent research on implant surfaces, including that of Patent.