Outcome of peri-implant maintenance care in patients with an implant-supported lower denture—A 3.5-year retrospective analysis

Abstract

Background: Implant-supported overdentures represent a successful treatment for edentulous patients. As early diagnosis, detection and supportive care are considered key factors for the prevention of peri-implant diseases, consistent maintenance of these implants is becoming increasingly relevant. Purpose: This retrospective analysis evaluated a cohort of edentulous patients with a mandibular implant-supported overdenture over a period of 3.5 years during which the peri-implant tissues were assessed. Materials and Methods: A total of 108 patients that had consistently adhered to the annual maintenance appointments was selected. The clinical peri-implant pocket probing depth (PiPPD) and peri-implant bleeding on probing score (PiBOP) were investigated. Data from the 3.5-year follow-up were compared to data from the baseline assessment. Results: A 100% implant survival was reported after 3.5 years. The mean PiBOP showed a significant decrease over time (P =.028). The mean PiPPD was found significantly deeper for male patients both at baseline (P =.004) and 3.5-year follow-up (P