Diametral tensile strength of composite core material with cured and uncured fiber posts

Abstract

The aim of this study was to determine the influence of different types of posts and post head designs on the fracture resistance of a composite resin core material using the diametral tensile strength (DTS). Seventy-five disc specimens were prepared using a composite core and prefabricated glass fiber posts and were divided into four test groups and one control group (n= 15). The use of fiber posts reduced the DTS of the composite core material; the DTS value of the control material was significantly higher (p = 0.05) than all of the test groups.