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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/14822

Authors: Mohamed Zoubir Bendjaballah Ph.D
Keywords: - Tooth splinting, fixed partial denture, finite element analysis, load partitioning mechanism
Issue Date: 2010
Publisher: Egyptian Dental Journal
Abstract: Studies have presented fixed partial demures (FPD) supported by one or more teeth as a good alternative in the treatment of missing teeth in both bounded and unbounded cases. Most of the biomechanical studies on long unbounded FPDs in the distal extension area have focused on the bone von-Mises stresses developed due to acting loads. These stresses are related to individual supporting tooth loads. These tooth loads are, in tum, related to how the acting load is partitioned on the supporting teeth. The mechanism with which the acting loads are partitioned on the supporting teeth is not sufficiently addressed in the literature. Therefore, the purpose of this study is to focus on the partitioning of the acting loads on the supporting tooth/teeth of a long unbounded FPD at the distal extension area. Three idealized computer•aided design (CAD) for FPD's supp:nted by one, two, and three teeth were constructed. The corresponding finite element analyses were conducted and results analyzed under a lOON load located at the free end of the prostheses. Resu([s showed that the load transfer mechanism varied substantially with the number of carrying teeth . Results, also, showed that in the three models there is a substantial compressive force on the most mesial tooth. In the models with two and threee suppproting teeth, there was substantial tensile force on the most distal tooth. In addition, a moment resulted in the mesio•distal direction (about the bucco-lingual axis) in the 3 mdoels. These forces and moments may eventually cause tooth loosening and ultimately lead to denture failure, particularly in the one tooth case.
URI: http://hdl.handle.net/123456789/14822
Appears in Collections:College of Applied Medical Sciences

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