Research Information System
International Dental Research, vol.8, no.3, pp.105-110, 2018 (TRDizin)
Aim: The aim of this study was to evaluate the effects of twogeometrically different fiber post systems and two different placinglengths on the stress distribution of endodontically treated teeth.Methodology: Four different mandibular premolar tooth modelswere created. These models were restored using oval or circular fiberposts with two different placing lengths. An oblique force of 300 N wasapplied to the top of the tooth, and von Mises stress evaluations werecarried out on the dentin tissue, luting cement, and fiber posts.Results: The maximum von Mises stresses were observed in the 10-mm long circular fiber post model, while the minimum stresses wereseen in the 5-mm long oval fiber post model. In general, the oval fiberpost models presented more homogeneous stresses than the circularfiber post models. Moreover, the 10-mm long fiber post modelsgenerated greater von Mises stresses than the 5-mm long fiber postmodels in the dentin tissue and luting cement.Conclusions: According to the study findings, the use of oval fiberposts at both placing lengths is suggested for oval shaped root canalsdue to the lower stress concentrations.