Maxillary sinus elevation with an alloplastic material and implants: 11 years of clinical and radiologic follow-up.
OBJECTIVE
The aim of this retrospective study was to determine the clinical and radiologic results, over an 11-year period, of resorbable hydroxyapatite used as a bone substitute in maxillary sinus elevation.


METHODS
Between 1996 and 2007, we treated 26 patients with maxillary sinus elevation (27 sinuses) using resorbable hydroxyapatite and simultaneous insertion of 47 titanium implants. Patients were recruited, screened, and accepted or rejected sequentially based on specific inclusion/exclusion criteria. Ten months later, 2-stage surgery and prosthetic rehabilitation were performed.


RESULTS
During the 11-year follow-up period (mean, 6 years), all the implants appeared clinically and radiologically integrated. The cumulative survival rate was 100%. During the observation period, the resorption of the graft apically to the implant was 1.8 mm on average.


CONCLUSIONS
The posterior area of the maxilla often represents a challenging clinical situation because of either the lack of alveolar bone or the structural characteristics of the trabeculae in that specific area. The high survival rate of the implants and the stability of the mineralization of the graft confirmed that resorbable hydroxyapatite was a suitable material for sinus grafting.
g.garlini@tin.it
Giuliano
G
Garlini
Marco
M
Redemagni
Matteo
M
Donini
Carlo
C
Maiorana
D020341:Absorbable Implants; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001672:Biocompatible Materials / Q000627:therapeutic use; D018786:Bone Substitutes / Q000627:therapeutic use*; D002113:Calcification, Physiologic / Q000502:physiology; D003094:Collagen / Q000627:therapeutic use; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D017886:Durapatite / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D006025:Glycosaminoglycans / Q000627:therapeutic use; D006801:Humans; D006882:Hydroxyapatites / Q000627:therapeutic use; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D009092:Mucous Membrane / Q000601:surgery; D016348:Osseointegration / Q000502:physiology; D011862:Radiography, Panoramic; D012189:Retrospective Studies; D016019:Survival Analysis
D001672:Biocompatible Materials; C080295:Biostite; D018786:Bone Substitutes; D015921:Dental Implants; D006025:Glycosaminoglycans; D006882:Hydroxyapatites; D003094:Collagen; D017886:Durapatite