objective: fiber-reinforced composite (frc) posts have recently become more popular for restoring endodontically treated teeth because of providing esthetics, better stress distribution and lower risk of root fracture. resistance against tensile forces dislodging the post from the root canal is a prerequisite for these posts. this study aimed to evaluate the tensile retention (strength) of intr...

Background and Aim: Debonding is the most commonly encountered failure in teeth restored with fiber posts that mainly occurs at the weakest interface (dentin-cement interface). Thus, reinforcement of this interface is mandatory. The aim of this study was to evaluate the effect of different root dentin surface treatments after post space preparation on bond strength of fiber posts cemented with ...

introduction: many studies have been performed to evaluate the stress distribution around endodontic posts; those which compared posts composed of different materials are rare. the aim of this study was to compare stresses induced in dentin by three structurally different posts using photoelasticity method. materials and methods: nine blocks of psm-5 photoelastic material with 45×45×10 mm dimen...

objectives: the main disadvantage of fiber posts is their low bond strength to root canal wall. the aim of the present study was to assess the effect of different root canal post space treatments on push-out bond strength of fiber posts to root dentin. materials and methods: after post space preparation in 40 endodontically treated human premolars, the teeth were randomly divided into four expe...

The purpose of this study was to evaluate the time needed to remove several types of fiber posts using two different bur kits. Estimates refer to the time needed to pass the fiber post until arriving at the gutta-percha. Sixty extracted anterior teeth were treated endodontically. A post space with a standard depth of 10 mm was prepared in each root canal. The sample was randomly divided into 3 ...

bacterial leakage and root fractures are the most important reasons of root canal treatment failure. due to the lack of adhesion of gutta percha to the canal walls, resilon has been introduced as a root-filling material able to bond to the root walls. metal posts may predispose the tooth walls to oblique and vertical fracture which usually leads to tooth loss; whereas, fiber posts may reinforce...

introduction: the resistance to fracture of endodontically treated teeth restored with esthetic post systems has not been extensively researched. this in vitro study compared the fracture patterns of endodontically treated teeth with esthetic post systems with different analysis methods. materials and methods: a total of 26 recently extracted human maxillary central incisors were decoronated an...