Retention of cast posts cemented with zinc phosphate cement using different cementing techniques.

What Was Tested

This randomized controlled trial looks at the intervention named in the title.

This study compares the effect of different cementation techniques on the retention of cast posts and cores.

Who Took Part

Zinc phosphate cement was used as a luting agent using 4 different methods of cement introduction to the root canal space.

This created 4 treatment groups consisting of 6 teeth in each group.

How the Study Was Run

The researchers set it up as a randomized study.

Because people in this study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

Twenty-four extracted single rooted human teeth were used in this study.

After routine preparation of the root canals, the canal space was enlarged with reamers.

Direct post patterns were made with acrylic resin.

Castings were fabricated using Ni-Cr-Mb alloy.

In Group A, the cement was applied over the posts only.

What Was Measured

The tensile retentive force of cast posts was evaluated using the Instron testing machine (Instron, Canton, MA).

PubMed files the paper under topics including Acrylic Resins, Analysis of Variance, Cementation, Chromium Alloys, Confidence Intervals, Dental Bonding and Dental Casting Investment.

What This Means in Plain Language

The paper is a randomized study.

Its findings take up roughly 6 sentences of the abstract and are left out here on purpose; the source paper is the place to read them.

The publication is from 2001 (Journal of prosthodontics : official journal of the American College of Prosthodontists), a journal based in United States.

More context: all human trials.