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   Offical Journal of The Academy of Osseointegration

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Volume 28 , Issue 5
September/October 2008

Pages 509-515

Localized Ridge Augmentation Using a Block Allograft with Subsequent Implant Placement: A Case Series

Walker T. Pendarvis, DMD, MHS/Johnny B. Sandifer, DMD

PMID: 18991002
DOI: 10.11607/prd.00.0825

The most significant local factors for successful implant placement are the quality and quantity of bone present. Bone loss occurs on a predictable basis following loss of the natural dentition, provided no interceptive therapies are carried out. Restoration of considerable hard tissue defects can be achieved using a variety of techniques, including autogenous blocks and newer methods such as corticocancellous allograft blocks. This report demonstrates successful ridge augmentation using an iliac crest monocortical allograft. Nine patients in need of ridge augmentation for the placement of 16 dental implants were included in this series. Histology from one case after the 6-month healing period demonstrated newly formed woven bone with vascular ingrowth, suggestive of osteoconduction. All grafted sites appeared integrated with clinically visible bleeding following removal of the fixation screw. The mean gain of ridge augmentation at the 6-month reentry was 3.0, 3.2, 3.1, and 3.0 mm, respectively, at the crest and 1, 3, and 5 mm apical to the crest, with individual gains up to 7 mm. Implants were successfully placed in all sites. This method represents an alternative source of block allograft bone for significant alveolar ridge augmentation. (Int J Periodontics Restorative Dent 2008;28:509515.)

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