title: Immediate fixed implant rehabilitation of the atrophic edentulous maxilla after bilateral sinus floor augmentation: a 12-month pilot study.
abstract: OBJECTIVE
  The aims of this study were to evaluate a surgical/prosthetic protocol for the immediate rehabilitation of the augmented edentulous maxilla, and to compare the outcomes of implants placed in grafted (test group) versus native (control group) sites in the same patients.
  
  
  METHODS
  Twenty patients were included in the study. Each patient was treated with a bilateral sinus augmentation procedure using a 50:50 composite graft of autogenous mandibular bone and bovine hydroxyapatite. Four to 5 months later, 155 implants (90 test and 65 control) were placed and restored with screw-retained fixed definitive prostheses supported by titanium frameworks within 1 week. All patients were followed for 1 year. Implant stability quotient (ISQ) measurements and radiographic evaluation of the marginal bone resorption (MBR) were performed.
  
  
  RESULTS
  Two test implants failed in two patients, giving a cumulative 1-year success rate of 98.7%; the prostheses success rate was 100%. Insertion torque and ISQ values for test implants were significantly lower than those for control implants (unpaired t-test, p < .0001). The mean MBR around control and test implants at the 1-year evaluation were similar (0.47 ± 0.25 mm and 0.43 ± 0.21 mm, respectively).
  
  
  CONCLUSIONS
  The combination of implants placed in sinus-grafted and native sites can be immediately loaded with a fixed full-arch prosthesis and yield short-term successful outcomes.
authors: Oral and Maxillo-Facial Surgery Unit, Department of Dental Sciences, University of Bologna, Italy. checcopieri@yahoo.it
authors: Francesco
authors: F
authors: Pieri
authors: Nicolò Nicoli
authors: NN
authors: Aldini
authors: Milena
authors: M
authors: Fini
authors: Claudio
authors: C
authors: Marchetti
authors: Giuseppe
authors: G
authors: Corinaldesi
mesh_terms: D000818:Animals; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation / Q000379:methods; D002417:Cattle; D003764:Dental Materials / Q000737:chemistry; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D003819:Denture Bases; D003779:Denture Design; D003781:Denture Retention; D003827:Denture, Complete, Upper; D017886:Durapatite / Q000627:therapeutic use; D005500:Follow-Up Studies; D006801:Humans; D057893:Immediate Dental Implant Loading; D007575:Jaw, Edentulous / Q000601:surgery*; D008437:Maxilla / Q000601:surgery*; D016348:Osseointegration / Q000502:physiology; D017060:Patient Satisfaction; D057873:Peri-Implantitis / Q000209:etiology; D010865:Pilot Projects; D011183:Postoperative Complications; D019252:Radiography, Dental, Digital; D059546:Sinus Floor Augmentation / Q000379:methods*; D014025:Titanium / Q000737:chemistry; D019415:Torque; D014182:Transplantation, Autologous; D016896:Treatment Outcome
chemical_list: D018786:Bone Substitutes; D003764:Dental Materials; D017886:Durapatite; D014025:Titanium