A 5-Year Prospective Follow-Up Study of Implant-Supported Fixed Prostheses in Patients Subjected to Maxillary Sinus Floor Augmentation with an 80:20 Mixture of Bovine Hydroxyapatite and Autogenous Bone

• Published in: Clinical implant dentistry and related research 2004, Vol.6 (2), p.82-89
• Main Authors: Hallman, Mats, Zetterqvist, Lars
• Format: Article
• Language: English
• Subjects: Aged; Alveolar Bone Loss - diagnostic imaging; Alveolar Bone Loss - surgery; Alveolar Bone Loss/radiography/surgery; Animals; autogenous bone graft; Bone Substitutes; Bone Transplantation - methods; bovine hydroxyapatite; Cattle; clinical study; Dental Implantation, Endosseous; dental implants; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Dentistry; Denture, Partial, Fixed; Female; fibrin glue; Follow-Up Studies; Humans; Jaw, Edentulous - diagnostic imaging; Jaw, Edentulous - rehabilitation; Life Tables; Male; Maxillary Sinus - surgery; maxillary sinus floor augmentation; Middle Aged; Minerals; Oral Surgical Procedures, Preprosthetic; prospective; Prospective Studies; Radiography
• ISSN: 1523-0899; 1708-8208
• DOI: 10.1111/j.1708-8208.2004.tb00030.x

ABSTRACT Background: Prospective long‐term follow‐up studies evaluating the use of bone substitutes to enable dental implant placement and integration are rare. Purpose: This study was undertaken to evaluate the survival rate of dental implants placed 6 months after maxillary sinus floor augmentation using a mixture of 80% bovine hydroxyapatite (BH) and 20% autogenous bone (AB). Material and Methods: Twenty patients subjected to 30 maxillary sinus floor grafting procedures using fibrin glue and an 80:20 mixture of BH and AB to enable placement of dental implants 6 months later were followed for 5 years of functional loading. Clinical and radiographic examinations of the grafts and implants were performed. Results: After 5 years of functional loading with fixed bridges, 15 of 108 implants had been lost, giving a cumulative survival rate of 86%. The mean marginal bone loss after 5 years was 1.3 ± 1.1 mm. Conclusion: Grafting of the maxillary sinus with a mixture of BH and AB and later placements of turned implants could be performed with predictable long‐term results. All but one of the patients who were observed had functional fixed bridges after 5 years of functional loading.