Fracture resistance of tooth restored with four glass fiber post systems of varying surface geometries-An in vitro study.

Background: The purpose of this study was to relate the fracture resistance of endodontically treated teeth in relation to post geometry.

Material And Methods: Forty single rooted mandibular premolars were instrumented by step - back technique and obturated by lateral condensation. Forty teeth were randomly divided into four groups: Reforpost glass fiber X-ray®, RelyX®, Exacto conical® and Parapost Fiber Lux®.