Purpose: The aim of this study was to review the indications for implant placement, early outcomes, and associated risk factors.
Materials And Methods: A retrospective cohort study design was used. The study was composed of a group of 509 consecutive patients, which represented the total number of patients treated from 2012 to 2014 in the Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Belgium. The authors analyzed the indications for implant placement and the potential risk factors for early implant failure.
Results: A total of 509 patients received 1,139 dental implants. The group consisted of 240 men and 269 women, with a median age of 58 years. The most frequent indication for implant placement was restoration of a partially edentulous arch (80.1%, n = 408). For 152 implants (13.3%), additional bone-augmentation or sinus elevation procedures were required. Early failures were recorded for 52 (4.6%) implants in 33 patients (6.5%). Smoking, male gender, total edentulism, implant diameter, and bone augmentation surgery were found to be associated with early implant failure.
Conclusion: Patients referred for implant placement were more likely to be partially edentulous and older than 50 years. Singletooth replacement in the posterior mandible was the most frequent indication (24.4%) for treatment. This study found an early success rate of 95.4% and identified risk factors for early failures.
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