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Vertical ridge augmentation of the atrophic posterior mandible with sandwich technique: bone block from the chin area versus corticocancellous bone block allograft--clinical and histological prospective randomized controlled study.

Laino L, Iezzi G, Piattelli A, Lo Muzio L, Cicciù M - Biomed Res Int (2014)

Bottom Line: Histological and histomorphometric samples were collected at the time of implant positioning in order to analyze the percentage of newly formed bone, the residual graft material, and marrow spaces/soft tissue.The percentage of residual grafted material was significantly higher in the test group, whilst the percentage of marrow spaces was higher in control group.In conclusion, both procedures supported good results, although the use of bone blocks allograft was less invasive and preferable than harvesting bone from the mental symphysis.

View Article: PubMed Central - PubMed

Affiliation: Department of Clinical and Experimental Medicine, University of Foggia, FO, Italy.

ABSTRACT

Unlabelled: The aim of the present study is to compare the histological aspects of bone formation in atrophic posterior mandibles augmented by autologous bone block from chin area with corticocancellous bone block allograft used as inlays with the sandwich technique.

Materials and methods: Sixteen patients with bilateral partial edentulism in the posterior mandible were selected. The residual bone height, preliminarily measured by computed tomography scans, ranged between 5 and 7 mm from the inferior alveolar nerve. All patients required regeneration procedure with autologous bone block from chin area (control group) versus bone block allograft Puros (Zimmer Dental, 1900 Aston Avenue, Carlsbad, CA, USA) (test group). Histological and histomorphometric samples were collected at the time of implant positioning in order to analyze the percentage of newly formed bone, the residual graft material, and marrow spaces/soft tissue.

Results: No statistically significant differences between the two groups were found regarding the percentage of newly formed bone. The percentage of residual grafted material was significantly higher in the test group, whilst the percentage of marrow spaces was higher in control group.

Conclusions: In conclusion, both procedures supported good results, although the use of bone blocks allograft was less invasive and preferable than harvesting bone from the mental symphysis.

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Related in: MedlinePlus

An osteon in the vicinity of grafted bone can be seen. Acid fuchsin-toluidine blue; original magnification 200x.
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fig7: An osteon in the vicinity of grafted bone can be seen. Acid fuchsin-toluidine blue; original magnification 200x.

Mentions: In the control group, a significant amount of grafted bone, almost completely surrounded by newly formed bone, was observed (Figure 4). The autologous grafted bone showed irregularly shaped margins, probably due to the remodeling process. The demarcation line (cementing line) between grafted bone and newly formed bone was evident (Figure 5). In some areas, bone remodeling was conceivable with a rim of osteoblasts depositing osteoid matrix (Figure 6). Osteons in the vicinity of grafted bone could be observed (Figure 7). No signs of inflammatory infiltrate were present.


Vertical ridge augmentation of the atrophic posterior mandible with sandwich technique: bone block from the chin area versus corticocancellous bone block allograft--clinical and histological prospective randomized controlled study.

Laino L, Iezzi G, Piattelli A, Lo Muzio L, Cicciù M - Biomed Res Int (2014)

An osteon in the vicinity of grafted bone can be seen. Acid fuchsin-toluidine blue; original magnification 200x.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4020564&req=5

fig7: An osteon in the vicinity of grafted bone can be seen. Acid fuchsin-toluidine blue; original magnification 200x.
Mentions: In the control group, a significant amount of grafted bone, almost completely surrounded by newly formed bone, was observed (Figure 4). The autologous grafted bone showed irregularly shaped margins, probably due to the remodeling process. The demarcation line (cementing line) between grafted bone and newly formed bone was evident (Figure 5). In some areas, bone remodeling was conceivable with a rim of osteoblasts depositing osteoid matrix (Figure 6). Osteons in the vicinity of grafted bone could be observed (Figure 7). No signs of inflammatory infiltrate were present.

Bottom Line: Histological and histomorphometric samples were collected at the time of implant positioning in order to analyze the percentage of newly formed bone, the residual graft material, and marrow spaces/soft tissue.The percentage of residual grafted material was significantly higher in the test group, whilst the percentage of marrow spaces was higher in control group.In conclusion, both procedures supported good results, although the use of bone blocks allograft was less invasive and preferable than harvesting bone from the mental symphysis.

View Article: PubMed Central - PubMed

Affiliation: Department of Clinical and Experimental Medicine, University of Foggia, FO, Italy.

ABSTRACT

Unlabelled: The aim of the present study is to compare the histological aspects of bone formation in atrophic posterior mandibles augmented by autologous bone block from chin area with corticocancellous bone block allograft used as inlays with the sandwich technique.

Materials and methods: Sixteen patients with bilateral partial edentulism in the posterior mandible were selected. The residual bone height, preliminarily measured by computed tomography scans, ranged between 5 and 7 mm from the inferior alveolar nerve. All patients required regeneration procedure with autologous bone block from chin area (control group) versus bone block allograft Puros (Zimmer Dental, 1900 Aston Avenue, Carlsbad, CA, USA) (test group). Histological and histomorphometric samples were collected at the time of implant positioning in order to analyze the percentage of newly formed bone, the residual graft material, and marrow spaces/soft tissue.

Results: No statistically significant differences between the two groups were found regarding the percentage of newly formed bone. The percentage of residual grafted material was significantly higher in the test group, whilst the percentage of marrow spaces was higher in control group.

Conclusions: In conclusion, both procedures supported good results, although the use of bone blocks allograft was less invasive and preferable than harvesting bone from the mental symphysis.

Show MeSH
Related in: MedlinePlus