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- Title
A Clinical Study of 406 Sinus Augmentations With 100% Anorganic Bovine Bone.
- Authors
Ferreira, Carlos E. A.; Novaes Jr., Arthur B.; Haraszthy, Violet I.; Bittencourt, Márcio; Martinelli, Carolina B.; Luczyszyn, Sonia M.
- Abstract
Background: The aim of the present study is to evaluate the use of anorganic bovine bone (ABB) associated with a collagen membrane (CM) for a sinus graft by means of clinical, histologic, and radiographic parameters in cases with bone availability ≤7 mm. A preliminary evaluation consisted of a clinical examination, computed tomography (CT), and a panoramic x-ray. Methods: Ninety-two patients requiring bilateral sinus grafts and 222 requiring unilateral procedures (total: 406 sinuses) participated in this study. A total of 1,025 implants were placed in the grafted sinuses. A total of 118 implants were placed simultaneously with the sinus graft (one stage), and 907 implants were placed in a subsequent surgery (two stages), 6 to 12 months after the graft was performed. In seven cases, a biopsy was harvested for histomorphometric analysis. Recall appointments were scheduled every 6 months, and panoramic and periapical x-rays were required every year for 3 years. Results: Among 1,025 implants, 19 were lost (survival rate: 98.1%). The difference in survival rates for implants placed in native bone ≤3 mm (98.1%), >3 to ≤m (98.6%), and >5 to ≤7 mm (97.0%) was not statistically significant (P= 0.3408). The survival rates for implants with rough and machined surfaces (98.6% and 97.0%, respectively) were not statistically significant (P = 0.0840). The histomorphometric analysis showed new bone formation (39.0% ± 12%), marrow space (52.9% + 9.3%), and residual ABB (8% ± 2.7%). Conclusion: Our results indicated that 1,025 implants placed in sinuses grafted exclusively with ABB combined with CM led to an excellent and predictable survival rate of 98.1%.
- Subjects
RIO de Janeiro (Brazil); VITORIA (Espirito Santo, Brazil); BRAZIL; BONE regeneration; BONE substitutes; DENTAL implants; MAXILLARY sinus surgery; OSSEOINTEGRATION
- Publication
Journal of Periodontology, 2009, Vol 80, Issue 12, p1920
- ISSN
0022-3492
- Publication type
Article
- DOI
10.1902/jop.2009.090263