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International Journal of Oral Implantology



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Int J Oral Implantol (Berl) 3 (2010), No. 4     20. Dec. 2010
Int J Oral Implantol (Berl) 3 (2010), No. 4  (20.12.2010)

Page 315-322, PubMed:21180684

Clinical evaluation of Tiny 2.5- and 3.0-mm narrow-diameter implants as definitive implants in different clinical situations: a retrospective cohort study
Anitua, Eduardo / Errazquin, Jose M. / de Pedro, José / Barrio, Pedro / Begona, Leire / Orive, Gorka
Aim: The aim of the present study was to assess retrospectively the survival of narrow-diameter implants (2.5 and 3 mm in diameter) in patients with insufficient bone ridge thickness for placement of standard-diameter implants.
Material and methods: Fifty-one patients with 89 inserted narrow-diameter implants (2.5 and 3.0 mm) were included. Patients were treated with one or more narrow-diameter implants between June 2004 and December 2005. The observation period for all included implants was at least 3 years after implant loading. Outcome measures were implant survival, complications and marginal bone level changes evaluated on panoramic radiographs.
Results: The mean follow-up period for all implants was 48 months. Only one implant was lost, yielding survival rates of 98.9% and 98.0% for the implant- and subject-based analyses, respectively. Six complications were reported. Twenty-four months after implant insertion, mean bone loss was 1.26 mm (SD 0.51).
Conclusions: Narrow-diameter implants can be successfully used to treat narrow bone ridges up to 3 years after loading.

Keywords: failure, long-term follow-up, narrow-diameter implants, narrow implants, plasma rich in growth factors (PRGF), survival analysis