Share Page:

Volume 25 , Issue 5
September/October 2010

Pages 930938

Three-Dimensional Analysis of Bone Formation After Maxillary Sinus Augmentation by Means of Microcomputed Tomography: A Pilot Study

Sebastian Khl, Dr Med Dent/Hermann Gtz, Dipl Phys/Torsten Hansen, Dr Med Habil/Matthias Kreisler, Prof Dr Med Dent/Alexandra Behneke, Priv Doz Dr Med Dent/Uli Heil, Dipl Inf/Heinz Duschner, Univ Prof Dr/Berndt dHoedt, Univ Prof Dr Med Dent

PMID: 20862406

Purpose: Although many studies have analyzed the suitability of different grafting materials for maxillary sinus augmentation by means of histomorphometry in conventional histologic strains, the three-dimensional (3D) structure and remodeling of these grafts after healing beneath the sinus membrane remain unclear. The aim of the present study was to determine whether microcomputed tomography is a suitable method to evaluate the 3D structure and remodeling of grafts after sinus floor augmentation. Materials and Methods: Sinus floor augmentation was performed in five patients using autogenous bone (AB) alone, AB and beta-tricalcium phosphate (b-TCP, Cerasorb), AB and b TCP/hydroxyapatite (HA) (BoneCeramic), AB and calcium carbonate (Algipore), and AB and HA (PepGen). Specimens from the grafted sites were harvested by means of a trephine bur 5 to 16 months after maxillary sinus augmentation. Microcomputed tomography of these specimens was performed with a nominal isotropic resolution of 6 3 6 3 6 m2 voxel size. After segmentation, 3D images were reconstructed, and the distribution of bone and substitute material was evaluated by means of volumetric and density measurements. Results: In all images, both bone and substitute material could clearly be identified. The connectivity of trabeculae surrounding the substitute material was visible in the 3D reconstructions. Volumetric evaluation such as total bone volume, volume of substitute material, and trabecular thickness and spacing revealed differences between the different grafting materials. Conclusion: Microcomputed tomography is a promising method to evaluate the 3D structure of grafts after sinus floor augmentation with autogenous bone and bone substitute materials. Int J Oral Maxillofac Implants 2010;25:930938

Key words: bone grafting, maxillary sinus augmentation, microcomputed tomography

Full Text PDF File | Order Article


Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.


© 2018 Quintessence Publishing Co, Inc JOMI Home
Current Issue
Ahead of Print
Author Guidelines
Submission Form
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us