Open Access

Karina Anne-Marie Obreja, Ausra Ramanauskaite, Amira Begic, Maria Elisa Galarraga-Vinueza, Puria Parvini, Robert Alexander Sader, Frank Schwarz

• Objectives: To evaluate the prevalence of peri-implant health, peri-implant mucositis or periimplantitis for subcrestally placed implants (1–3 mm) on the short-, medium- and long term. Material and Methods: Two hundred patients were enrolled in this cross-sectional study that were treated and screened during regular maintenance visits at one university center. A total of 657 implants were evaluated. Peri-implant health and diseases were assessed according to predefined case definitions. Binary logistic regression was used to assess the correlation with local and systemic factors. Results: After a median function time of 9.36 ± 6.44 years (range: 1–26 years), the prevalence of peri-implant mucositis and peri-implantitis was 66.5% and 15.0%, at the patient level, corresponding to 62.6% and 7.5%, at the implant level, respectively. Peri-implantitis was significantly associated with patients’ history of periodontitis (odds ratio, OR 5.33). Conclusion: Peri-implant diseases were a common finding around subcrestally placed implants.