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Early complications of immediate loading in edentulous full-arch restorations: a retrospective analysis of 88 cases

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Purpose: To describe the clinical outcomes and complications related to provisional prostheses after fullarch implant-supported rehabilitation by means of an immediate loading protocol. Materials and Methods: This retrospective cohort study included patients who were consecutively treated with full-arch implantsupported restorations with a minimum of four implants (Replace Select Tapered TiUnite, Nobel Biocare AB) per arch and conical abutments (multi-unit, Nobel Biocare AB) by means of an immediate loading protocol. The surgical procedures were performed between May 2006 and June 2014 by a single oral surgeon. Demographic, surgical, and prosthetic variables were collected, and biologic and mechanical complications were registered. Results: A total of 61 maxillae (57%) and 46 mandibles (43%) were treated in 88 patients (40 men and 48 women) with a mean age of 62.4 years. A total of 558 implants were placed, 295 in postextraction sockets. A total of 331 implants (59.3%) were placed in the maxilla and 227 (40.7%) in the mandible. Within a 9-month period, 18 prostheses (16.8%) fractured (15 maxillary and 3 mandibular); in nine of these patients the opposing dentition was a full-arch, implant-supported restoration, and in the remaining nine patients, it was natural dentition. Six (1.1%) maxillary and three (0.5%) mandibular implants failed. Conclusions: A high implant survival rate is expected in the short term following this immediate loading protocol. Fracture of the provisional prosthesis is a common finding, affecting 17% of patients, and is significantly more prevalent in patients with bruxism and in maxillary prostheses.

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International Journal of Oral & Maxillofacial Implants, 2017, vol. 32, num.5, p. 1116-1122

# metadata.dc.title[].value
Early complications of immediate loading in edentulous full-arch restorations: a retrospective analysis of 88 cases