Abstract
The aim of this prospective pilot study was to evaluate the prosthodontic maintenance as well as the implant outcome of single implant-retained mandibular overdentures over an observation period of 6years. Eleven edentulous patients received one single implant in the midline of the mandible. Denture bases were temporarily relined and 2months later provided with a ball attachment for implant retention. Implant related parameters and prosthodontic maintenance interventions were assessed 4weeks after implant loading and then once a year. Over a mean observation period of 75.9months, no implant was lost. The most frequent prosthetic maintenance intervention was activation of the matrix due to loss of retention, followed by exchange of the female part. Eight denture bases had to be repaired after a fracture in the midline area. Within the limitations of this preliminary clinical study, the concept of a single midline implant to retain a mandibular complete denture was a successful treatment option for elderly edentulous patients.
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