A Clinical Study of 406 Sinus Augmentations With 100% Anorganic Bovine Bone
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
19/10/2012
19/10/2012
2009
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Resumo |
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 <= 5 mm (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%. J Periodontol 2009;80:1920-1927. |
Identificador |
JOURNAL OF PERIODONTOLOGY, v.80, n.12, p.1920-1927, 2009 0022-3492 http://producao.usp.br/handle/BDPI/26905 10.1902/jop.2009.090263 |
Idioma(s) |
eng |
Publicador |
AMER ACAD PERIODONTOLOGY |
Relação |
Journal of Periodontology |
Direitos |
restrictedAccess Copyright AMER ACAD PERIODONTOLOGY |
Palavras-Chave | #Bone regeneration #bone substitutes #dental implants #maxillary sinus/surgery #osseointegration #MAXILLARY SINUS #BIO-OSS #IMPLANT PLACEMENT #FLOOR AUGMENTATION #HISTOMORPHOMETRIC EVALUATION #SURVIVAL RATES #GRAFTS #HYDROXYAPATITE #COMBINATION #MORBIDITY #Dentistry, Oral Surgery & Medicine |
Tipo |
article original article publishedVersion |