Coagulo e membrana sinusale: connubio ideale per la rigenerazione ossea all’interno dei seni mascellari

Abstract

ObjectivesThe aim of this study was to evaluate the behaviour of a series of tapered implants placed in atrophic posterior maxillae using a crestal approach without bone grafting materials. Materials and methods20 patients participated in this retrospective study, and 21 implants (Neoss Tapered, Neoss Ltd., Harrogate, UK) were placed with crestal approach in the posterior maxilla from March 2012 to June 2013 with a 5-24 months follow-up of prosthetic loading. ResultsOut of a total of 21 implants placed in 20 patients, through a crestal technique under maxillary sinus, only one implant was lost during the osteointegration period. The remaining 20 implants recovered without complication and were loaded with single crowns after 4 months of healing. Excluding the lost implant, the remaining 20 implants had a clinical success of 100% after a 5-24 months follow-up of prosthetic loading. The average vertical bone height, at the moment of surgery, was 5.3±1.7mm, reaching 8.8±3.1mm after 5-24 months of loading, with a vertical sinus bone regeneration of 3.5±1.4mm. The average implant stability registered at the surgery was 73.8±10.4 ISQ and 76.3±4.6 ISQ at the second stage of surgery after 4 months of recovery. ConclusionsThe crestal approach can be a valid alternative, in specific cases, to the more invasive lateral window sinus elevation technique. Good results can be obtained without using biomaterials, and bone regeneration develops around the implants simultaneously with osteointegration without extending the recovery process.