Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/68166
Type: Artigo de periódico
Title: Graft incorporation and implant osseointegration following the use of autologous and fresh-frozen allogeneic block bone grafts for lateral ridge augmentation
Author: Neto, RS
Stavropoulos, A
Coletti, FL
Faeda, RS
Pereira, LAVD
Marcantonio, E
Abstract: ObjectivesTo compare autogenous bone (AT) and fresh-frozen allogeneic bone (AL) in terms of histomorphometrical graft incorporation and implant osseointegration after grafting for lateral ridge augmentation in humans. Materials and methodsThirty-four patients were treated with either AL (20 patients) or AT (14 patients) onlay grafts. During implant installation surgery 6months after grafting, cylindrical biopsies were harvested perpendicularly to the lateral aspect of the augmented alveolar ridge. Additionally, titanium mini-implants were installed in the grafted regions, also perpendicularly to the ridge; these were biopsied during second-stage surgery. Histological/histomorphometric analysis was performed using decalcified and non-decalcified sections. ResultsHistological analysis revealed areas of necrotic bone (NcB) occasionally in contact with or completely engulfed by newly formed vital bone (VB) in both AT and AL groups (55.927.6 vs. 43.1 +/- 20.3, respectively; P=0.19). Statistically significant larger amounts of VB (27.6 +/- 17.5 vs. 8.4 +/- 4.9, respectively; P=0.0002) and less soft connective tissue (ST) (16.4 +/- 15.6 vs. 48.4 +/- 18.1, respectively; P0.0001) were seen for AT compared with AL. No significant differences were observed between the groups regarding both bone-to-implant contact (BIC) and the bone area between implant threads (BA) on the mini-implant biopsies. ConclusionAllogeneic bone block grafts may be an option in cases where a limited amount of augmentation is needed, and the future implant can be expected confined within the inner aspect of the bone block. However, the clinical impact of the relatively poor graft incorporation on the long-term performance of oral implants placed in AL grafts remains obscure.
Subject: autogenous bone
bone augmentation
fresh-frozen allogeneic bone
histology
human
osseointegration
Country: EUA
Editor: Wiley-blackwell
Rights: fechado
Identifier DOI: 10.1111/clr.12107
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.