A multicenter prospective evaluation of 2-months loaded Osseotite® implants placed in the posterior jaws: 3-Year follow-up results

Tiziano Testori, Massimo Del Fabbro, Sylvan Feldman, Gianpaolo Vincenzi, Daniel Sullivan, Renato Rossi, Eduardo Anitua, Francesca Bianchi, Luca Francetti, Roberto L. Weinstein

Research output: Contribution to journalArticlepeer-review


In this prospective study, the clinical outcome of 2-months loaded implants placed in the posterior jaws was evaluated after up to 3 years of functional loading. 405 Osseotite® implants with microtextured acid-etched surface were consecutively placed in 11 fully and 164 partially edentulous patients (mean age 53.5± 15.3 (S.D.) years) using a one-stage technique. 282 implants, supporting 154 restorations, were placed in the mandible, while 123 implants, supporting 75 restorations, were placed in the maxilla. A total of 99 single-tooth restorations, 119 short-span fixed bridges and 11 full-arch prostheses were applied. The mean time interval from surgery to connection of provisional restoration was 2.0±0.7 months. 9 failures were reported up to 3 years of follow-up; of these, 4 mandibular and 2 maxillary implants failed during the initial healing period (before prosthesis connection), while 3 mandibular implants failed after loading. No other complications occurred throughout the study. Life table analysis showed a cumulative survival rate of 97.5% for the mandible and 98.4% for the maxilla. Post-loading implant survival rate was 98.9% for the mandible and 100% for the maxilla. The excellent outcome of this interim report suggests that microtextured Osseotite® implants in the posterior jaws may safely bear a functional load applied 2 months after insertion. The results of the present study are particularly encouraging for implants placed in the maxilla, since both a significant reduction of the healing period compared to the 6 months suggested by the classical Brånemark protocol, and an excellent post-loading function may be achieved also in low quality bone.

Original languageEnglish
Pages (from-to)154-161
Number of pages8
JournalClinical Oral Implants Research
Issue number2
Publication statusPublished - Apr 2002


  • Early loading
  • Life table analysis
  • Multicenter
  • Non-submerged implants
  • Osseotite® implants
  • Posterior mandible
  • Posterior maxilla
  • Survival rates

ASJC Scopus subject areas

  • Dentistry(all)


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