Fiber-reinforced resin fixed prostheses on four short implants in severely atrophic maxillae: 1-year results of a prospective cohort study

Publication date: Available online 19 February 2018
Source:Journal of Oral and Maxillofacial Surgery
Author(s): Florian Wagner, Rudolf Seemann, Mauro Marincola, Rolf Ewers
PurposeThe aim of this paper was to report the 1-year outcomes of fixed full arch fiber-reinforced resin bridges on short implants in atrophic maxillary jaws.MethodsA prospective cohort study was designed and patients with severely atrophic maxillae, corresponding to Cawood and Howell class V and VI were included. The mesial and distal peri-implant bone levels were assessed on panoramic radiographs that were taken at the time of implant insertion (baseline) and during follow-up visits.ResultsA total of 18 patients with 72 implants inserted in atrophic maxillary jaws were included in this study. All patients had a follow-up visit one year after loading. The cumulative one-year patient-based implant survival rate (CSR) was 88.8%, the cumulative one-year implant-based survival rate 97.2%, respectively.The marginal bone level was -0.5±0.5mm at the time of loading (n=72) and -0.8±0.6mm (n=72) after one year. The MBL depended significantly on the depth at the time of insertion. No prosthetic failure such as chipping or fracture occurred within the first year of loading.ConclusionProsthetic rehabilitation of atrophic maxillae with prostheses supported by four 4.0 x 5.0 mm or 3.0 x 8.0 mm implants seems to be a viable and cost-effective treatment option in the short-term.



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