Annals of Oral & Maxillofacial Surgery

Systematic review


Prouvost B, Braux J, Feghali MA, Mora F, Bouchard P. Vertical ridge augmentation of posterior atrophic sites with bone block allografts: A systematic review. Annals of Oral & Maxillofacial Surgery 2014 Oct 10;2(2):18.


Background: Insufficient data exist to describe vertical bone augmentation with allograft blocks. It is of interest for the clinician to anticipate mean vertical ridge augmentation in posterior sites grafted with bone block allografts.

Purpose:To evaluate the efficacy of allogeneic bone block-grafting in vertical ridge augmentation (VRA) procedures.

Materials and Methods:A systematic review of the literature was performed targeting the height of vertical bone augmentation, implant survival rates, and vertical bone resorption after graftingwhen using allogeneic bone blocks in VRA procedures. The literature was surveyed (MEDLINE by PubMed and Embase) from January 1975 up to and including December 2013.

Results: The combined searches resulted in 268 potentially eligible studies. Only two articles met all inclusion criteria. The data indicate thata mean vertical height gain of 4.03 mm to 4.30 mm can be achieved.

Conclusion:Within the limits of the available data, allogeneic blocks tend to promote bone height when used in posterior vertical resorption indications. There is insufficient evidence to recommend bone block allografts for VRA of posterior atrophic sites. Well-designed and implemented randomized-control trials are further required to evaluate the clinical outcomes associated with VRA procedures.

Corresponding Author