A 10-year longitudinal study of 160 implants simultaneously installed in severely atrophic posterior maxillas grafted with autogenous bone and a synthetic bioactive resorbable graft.
OBJECTIVE
This study intended to evaluate by clinical and imaging parameters the long-term predictability of osseointegrated implants inserted with specific simultaneous sinus lift approach in very atrophic posterior maxillas using a synthetic bioactive resorbable graft and autogenous bone graft.


METHODS
A total of 160 implants were inserted in 57 maxillary sinus of 45 consecutive patients (16 men, 29 women) presenting 4 mm or less of residual subsinus bone in a simultaneous approach with the sinus lift procedure. All patients were surgically treated by the same surgeon and received the same modified technical and biomaterial protocol with a composite graft made of autogenous bone and a synthetic bioactive resorbable graft (OsteoGen, Impladent, Holliswood, NY) in a 1:1 rate. Among the inclusions criteria was a minimum loading time of 6 months to assure bone response activity. All patients were followed up for a mean period of 61.7 months (range, 20-132 months) with clinical, digital pictures, and radiographic aspects. Specific cases were followed up with computerized tomography scans (27.2%) with the consent form signed.


RESULTS
Survival and success rates were 98.05% and 94.85%, respectively.


CONCLUSIONS
Advanced posterior maxillary resorption with extensive expanded sinus (SA-4 condition) can be safely treated by a simultaneous sinus lift approach and implant insertion using the technical protocol and biomaterials studied.
Manso
Marcelo C
MC
Brazilian Institute of Implant Dentistry, Rio de Janeiro, Brazil. marcelo@manso.odo.br
Wassal
Thomas
T
D020341:Absorbable Implants; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001284:Atrophy; D001672:Biocompatible Materials / Q000627:therapeutic use; D018786:Bone Substitutes / Q000627:therapeutic use*; D016025:Bone Transplantation / Q000379:methods*; D000044:Dental Abutments; D015921:Dental Implants; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D019232:Dental Restoration Failure; D017886:Durapatite / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007431:Intraoperative Complications; D008137:Longitudinal Studies; D008297:Male; D008437:Maxilla / Q000601:surgery*; D008443:Maxillary Sinus / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology; D010149:Postoperative Pain / Q000209:etiology; D019106:Postoperative Hemorrhage / Q000209:etiology; D016019:Survival Analysis; D016896:Treatment Outcome
D001672:Biocompatible Materials; D018786:Bone Substitutes; D015921:Dental Implants; D017886:Durapatite