Comparison of the efficiency and effectiveness of various techniques for removal of fiber posts.

A study was conducted to determine the efficiency and effectiveness of several techniques for fiber post removal. Four groups of 20 mandibular premolars were endodontically treated and obturated. Post spaces were prepared for the following post systems: ParaPost XH, ParaPost Fiber White, Luscent Anchors, and Aestheti-Plus.

Polymerization shrinkage and depth of cure of packable composites.

Objective: This investigation evaluated polymerization shrinkage and depth of cure of five packable composites.

Method And Materials: Five materials were used for the investigation: Alert, Surefil, Solitaire, P60, and Prodigy Condensable. Groups of 10 specimens of each material were made measuring either 2 or 5 mm in thickness, mounted in a testing jig, and polymerized using a dental curing light.