title: Mini-invasive osteotome sinus floor elevation in partially edentulous atrophic maxilla using reduced length dental implants: interim results of a prospective study.
abstract: OBJECTIVE
  The purpose of this prospective study was to investigate the clinical success of a treatment protocol for the rehabilitation of edentulous posterior maxilla consisting of the positioning of short implants in combination with transcrestal sinus lifting, with the adjunct of pure (leukocyte-free) platelet-rich plasma, in order to reducing the risk of membrane perforation and other surgical complications.
  
  
  METHODS
  A total of 25 patients (65 implants) were treated. Pure platelet-rich plasma was used in the sinus membrane lifting procedure. Implants of 8.5 mm length or shorter were splinted through the prosthetic rehabilitation with one or more implants longer than 10 mm.
  
  
  RESULTS
  After a follow-up period ranging from 12 to 19 months (mean 14.4 months) after prosthetic loading, 23 patients (60 implants) were evaluated. Overall implant success and survival rates were 100% at 1 year follow-up visit. All prosthetic rehabilitations were successful and in function. After 1 year of loading, peri-implant bone loss averaged 0.34 ± 0.21 mm for 8.5 mm or shorter implants (n = 25) and 0.36 ± 0.30 mm for longer implants (n = 35) (overall mean 0.35 ± 0.25 mm) without significant difference between the two groups (p = 0.23).
  
  
  CONCLUSIONS
  The proposed treatment protocol is a viable option for the rehabilitation of edentulous posterior atrophic maxilla.
authors.affiliation: Università degli Studi di Milano, Department of Biomedical, Surgical and Dental Sciences, Centre for Research in Oral Health, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.
authors.forename: Silvio
authors.initials: S
authors.lastname: Taschieri
authors.forename: Stefano
authors.initials: S
authors.lastname: Corbella
authors.forename: Massimo
authors.initials: M
authors.lastname: Del Fabbro
mesh_terms: D015921:Dental Implants; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000601:surgery*; D008437:Maxilla / Q000601:surgery*; D011446:Prospective Studies; D059546:Sinus Floor Augmentation / Q000379:methods*
chemical_list: D015921:Dental Implants