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Histomorphometric analysis following augmentation of the posterior mandible using cancellous bone‐block allograft

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Histomorphometric analysis following augmentation of the posterior mandible using cancellous bone‐block allograft

Auteurs : Joseph Nissan [Israël] ; Vered Marilena [Israël] ; Ora Gross [Israël] ; Ofer Mardinger [Israël] ; Gavriel Chaushu [Israël]

Source :

Journal of Biomedical Materials Research Part A [ 1549-3296 ] ; 2011-06-15.

RBID : ISTEX:7F3080A22E36E0719BB858392B408C662DEF13BA

Descripteurs français

Wicri :
- topic : Médecine dentaire.

English descriptors

Abstract

The present study was conducted to histologically and histomorphometrically evaluate the application of cancellous bone‐block allografts for the augmentation of the posterior atrophic mandible. Twenty‐four consecutive patients underwent augmentation with cancellous bone‐block allografts in the posterior mandible. A bony deficiency of at least 3 mm horizontally and/or vertically according to CT para‐axial reconstruction served as inclusion criteria. Following 6 months, 85 implants were placed and a cylindrical sample core was collected. All specimens were prepared for histological and histomorphometrical examination. Implant survival rate was 95.3%. Follow‐up ranged 12–66 months (mean 43 ± 19 months). The mean newly formed bone was 44 ± 28%, that of the residual cancellous bone‐block allograft 29 ± 24%, and of the marrow and connective tissue 27 ± 21%. Statistically significant histomorphometric differences regarding newly formed bone (69% vs. 31%, p = 0.05) were found between younger (<45 years) and older (>45 years) patients, respectively. Histomorphometric differences regarding residual cancellous bone‐block allograft (17% vs. 35%) and of the marrow and connective tissue (14% vs. 34%) were not statistically significant. Cancellous bone‐block allograft is biocompatible and osteoconductive, permitting new bone formation following augmentation of extremely atrophic posterior mandible with a two‐stage implant placement procedure. New bone formation was age‐dependent. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part A: , 2011.

Url:

https://api.istex.fr/document/7F3080A22E36E0719BB858392B408C662DEF13BA/fulltext/pdf

DOI: 10.1002/jbm.a.33096

Affiliations:

Israël

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Le document en format XML

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<term>Autogenous</term>
<term>Autogenous bone</term>
<term>Aviv</term>
<term>Aviv university</term>
<term>Block allograft</term>
<term>Bone allograft</term>
<term>Bone formation</term>
<term>Bovine bone mineral</term>
<term>Cancellous</term>
<term>Cancellous allografts</term>
<term>Cancellous block allograft</term>
<term>Chaushu</term>
<term>Cinical view</term>
<term>Clin</term>
<term>Clin implant dent relat</term>
<term>Connective tissue</term>
<term>Dent</term>
<term>Dental implants</term>
<term>Dental medicine</term>
<term>Gabriela goldschleger school</term>
<term>Graft</term>
<term>Histomorphometric</term>
<term>Histomorphometric analysis</term>
<term>Histomorphometric differences</term>
<term>Implant</term>
<term>Implant dent</term>
<term>Implant placement</term>
<term>Klachkin street</term>
<term>Localized ridge augmentation</term>
<term>Mandible</term>
<term>Mardinger</term>
<term>Maxilla</term>
<term>Nissan</term>
<term>Online</term>
<term>Online issue</term>
<term>Oral maxillofac surg</term>
<term>Photomicrograph</term>
<term>Posterior mandible</term>
<term>Present study</term>
<term>Prosthet dent</term>
<term>Residual</term>
<term>Residual cancellous block allograft</term>
<term>Residual cancellous block allograft bone</term>
<term>Resorption</term>
<term>Soft tissue dehiscence</term>
<term>Standard length implants</term>
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<front><div type="abstract" xml:lang="en">The present study was conducted to histologically and histomorphometrically evaluate the application of cancellous bone‐block allografts for the augmentation of the posterior atrophic mandible. Twenty‐four consecutive patients underwent augmentation with cancellous bone‐block allografts in the posterior mandible. A bony deficiency of at least 3 mm horizontally and/or vertically according to CT para‐axial reconstruction served as inclusion criteria. Following 6 months, 85 implants were placed and a cylindrical sample core was collected. All specimens were prepared for histological and histomorphometrical examination. Implant survival rate was 95.3%. Follow‐up ranged 12–66 months (mean 43 ± 19 months). The mean newly formed bone was 44 ± 28%, that of the residual cancellous bone‐block allograft 29 ± 24%, and of the marrow and connective tissue 27 ± 21%. Statistically significant histomorphometric differences regarding newly formed bone (69% vs. 31%, p = 0.05) were found between younger (<45 years) and older (>45 years) patients, respectively. Histomorphometric differences regarding residual cancellous bone‐block allograft (17% vs. 35%) and of the marrow and connective tissue (14% vs. 34%) were not statistically significant. Cancellous bone‐block allograft is biocompatible and osteoconductive, permitting new bone formation following augmentation of extremely atrophic posterior mandible with a two‐stage implant placement procedure. New bone formation was age‐dependent. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part A: , 2011.</div>
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Histomorphometric analysis following augmentation of the posterior mandible using cancellous bone‐block allograft

Histomorphometric analysis following augmentation of the posterior mandible using cancellous bone‐block allograft

Source :

Descripteurs français

English descriptors

Abstract

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