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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

Manso, Marcelo C. DDS, MScD, PhD*; Wassal, Thomas DDS, MSc, PhD

doi: 10.1097/ID.0b013e3181e59d03
Basic and Clinical Research
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Purpose: 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.

Patients and 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.

Conclusion: 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.

*Maxillofacial Surgeon, Head of Graduate and Advanced Implant Dentistry Programs, Brazilian Institute of Implant Dentistry, Rio de Janeiro, Brazil.

†Maxillofacial Surgeon, Head of Master and Post-Doctoral Programs, São Leopoldo Mandic Dental School and Dental Research Center, São Paulo, Brazil.

Reprint requests and correspondence to: Marcelo Corrêa Manso, DDS, MScD, PhD, Largo do Machado 54, conj 907, Laranjeiras, Rio de Janeiro, Brazil, Telephone: 21-22056785/21-2205-1190, E-mail: marcelo@manso.odo.br

© 2010 Lippincott Williams & Wilkins, Inc.