Evaluation of stress and strain distribution in endodontically treated maxillary central incisor with two different post and core systems – A 3D Finite element analysis.

Abhinav Agarwal, Patel R.K.V, Kalavathy N, Prakash Somani



Background and objectives: Restoration of endodontically treated teeth is a common problem in restorative dentistry, related to the fractures. Such teeth often require additional support from the root canal by means of a post and core restoration. The present study was carried out to compare the stress & strain distribution patterns in endodontically treated maxillary central incisor restored with two different posts & core materials. Methods: Five three dimensional models were created of a maxillary central incisor with the aid of   ANSYS version 10. Each of these model was subjected to standard loading in three directions (Horizontal load - 10N, Vertical load -100N, Oblique load - 50N) and the resultant von mises stresses & strains were evaluated by measuring the distance between the nodes. Results: Maximum Von Mises stress of 408.189 MPa was seen in Model-4 with Prefabricated Light transmitting post and glass ionomer cement core and minimum Von Mises stress of 85 MPa was seen in Model-2 with Prefabricated fiber reinforced post and glass ionomer cement core. Conclusion:  Within the limitations of the study it was concluded that Prefabricated Light transmitting post with composite core showed better stress and strain distribution in dentin under all the loading conditions. 




Finite Element Analysis;Nodes;Composite core;glass ionomer core; fiber reinforced post;light transmitting post

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