Finite element analysis of stress concentration in three popular brands of fiber posts systems used for maxillary central incisor teeth.
OBJECTIVE
To study the stress concentrations in endodontically treated maxillary central incisor teeth restored with 3 different fiber post systems subjected to various oblique occlusal loads.


METHODS
FEM analysis was used to analyze stress concentrations generated in maxillary anterior teeth. Computer aided designing was used to create a 2-D model of an upper central incisor. Post systems analyzed were the DT Light Post (RDT, Bisco), Luscent Anchor (Dentatus) & RelyX (3M-ESPE). The entire design assembly was subjected to analysis by ANSYS for oblique loading forces of 25N, 80N & 125 N  RESULTS: The resultant data showed that the RelyX generated the least amount of stress concentration.


CONCLUSIONS
Minimal stress buildups contribute to the longevity of the restorations. Thus RelyX by virtue of judicious stress distribution is the better option for restoration of grossly decayed teeth.
Department of Conservative Dentistry, Endodontics and Aesthetic dentistry, D.Y. Patil Dental College, Pune, India.
Shalini
S
Aggarwal
Vaibhav
V
Garg