Immediate function of partial fixed rehabilitation with axial and tilted implants having intrasinus insertion

Enrico Luigi Agliardi, Stefano Tetè, Davide Romeo, Luciano Malchiodi, Enrico Gherlone

Research output: Contribution to journalArticlepeer-review


Implant-supported rehabilitation of the posterior maxilla could be challenging because hyperpneumatization of the maxillary sinus might reduce the bone height. In this study, the authors report preliminary results of a new treatment modality for the partial fixed rehabilitation of posterior maxilla with immediate function by using 1 anterior axial implant and 1 posterior tilted implant with intrasinus mesial insertion.From 2009 to 2011, 10 patients (6 women and 4 men) with missing upper premolars and molars were recruited and treated accordingto this protocol. Each patient received a partial fixed bridge supported by 1 axial anterior implant and 1 posterior implant placed with a 30-degree mesial inclination and intrasinus insertion. Autologous bone was positioned to fill the maxillary sinus cavity and to cover the exposed implant surface after elevation of the anterior sinus membrane. A prosthesis with immediate function was positioned within 3 hours, whereas a CAD/CAM final restoration was delivered 6 months later. Follow-ups at 6 and 12 months, and then annually, were scheduled. At each follow-up, plaque level and bleeding scores were assessed, and radiographic evaluation of marginal bone level change was performed at 1 year. The patients were followed up for a mean of 50 months (range, 42-57 mo). No implants were lost, and all prostheses were stable and functional, reporting 100% of implant and prosthetic success rates. After 1 year, bone loss had a mean (SD) of 1.0 (0.4) and 0.9 (0.5) mm for axial and tilted implants, respectively, with no statistically significant differences between them (P > 0.05).The preliminary results suggest that this approach could allow the rehabilitation of posterior maxilla with immediate function in case of reduced bone volume, representing an alternative technique to bone grafting, short implants, and zygomatic or pterygoid implants.

Original languageEnglish
Pages (from-to)851-855
Number of pages5
JournalJournal of Craniofacial Surgery
Issue number3
Publication statusPublished - 2014


  • Immediate function
  • Maxillary sinus
  • Partial fixed implant-supported restoration
  • Posterior maxilla
  • Tilted implant

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Surgery


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