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Updated: Aug 10, 2026

In situ Compressive Loading and Correlative Noninvasive Imaging of the Bone-periodontal Ligament-tooth Fibrous Joint
Published on: March 7, 2014
A comparison of two post systems under applied compressive-shear loads
R S Greenfeld1, R H Roydhouse, F J Marshall
1Department of Restorative Dentistry, University of British Columbia, Faculty of Dentistry, Vancouver.
Abstract:
This study compared a new parallel-tapering, threaded, split-shank post with a well-accepted parallel serrated post under applied compressive-shear loads. The posts were placed in paired, contralateral human teeth to attempt to minimize variation in the tooth model. Both initial and ultimate failure modes were observed, and the clinical significance reported. The Flexi-post system compared favorably with the Para-Post system under the conditions of this research.
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