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Immediate loading of implants in the edentulous mandible: a multicentre study.

Journal article
Authors Paulo Esteves Pinto Faria
Bárbara Masalskas
Anders Heyden
Lars Rasmusson
Luiz Antonio Salata
Published in Oral and maxillofacial surgery
Volume 20
Issue 4
Pages 385-390
ISSN 1865-1569
Publication year 2016
Published at Institute of Odontology, Section 1
Pages 385-390
Language en
Subject categories Surgery


The aim of this prospective study was to investigate the two-year outcomes following immediate loading of mono-cortically engaged implants.Thirty healthy mandible edentulous patients with an average age of 67.3 years and presenting with sufficient bony ridge at the mandible symphysis were included in the study. Four Astra Tech, Ti-Oblast(®) implants were installed between the mental foramina using the mono-cortical anchorage technique. The primary stability of the implants was assessed by resonance frequency analysis (RFA). After uni-abutments were placed, a temporary bridge was constructed and fixed the same day. The definitive bridges were installed 6 weeks after implant surgery. Five of 120 placed implants were lost in four patients during the first 6 weeks and these patients were excluded from the follow-up. The changes in marginal bone level (n = 20) were evaluated in Brazilian and Swedish groups at baseline, 6 weeks, 6 months, 12 months and 24 months. The RFA (n = 30) was evaluated at baseline, 6 weeks, 6 months, 12 months and 24 months postoperatively.Compared with baseline measurements, the postoperative values for marginal bone level (6 weeks, 6 months, 12 months and 24 months) were significantly reduced (p < 0.05), while no differences were observed in the RFA analysis (12 months and 24 months).The immediate loading of mono-cortically engaged implants in the edentulous mandible is safe and predictable and implant stability remains excellent after 2-year follow-up.

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