Mats Hallman1, Lars Zetterqvist. 1. Department of Oral and Maxillofacial Surgery, Public Health Service, Gävle, Sweden. mats.hallman@lg.se
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.
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% bovinehydroxyapatite (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.
Authors: Antonio Carlos Victor Canettieri; Carlos Eduardo Dias Colombo; Chung Man Chin; Horácio Faig-Leite Journal: Int J Exp Pathol Date: 2009-10 Impact factor: 1.925