effect of trituration time on the compressive strength of an Iraqi amalgam alloy

In order to evaluate the effect of Trituration time on the compressive strength and working time in Iraqi amalgam, twenty one specimens were divided into three groups of seven specimens per group. Group I was triturated for 25 second, group II was under triturated for 15 sec, and group III was over triturated for 35sec. The compressive strength was tested after 1 and 24 hr. after mixing. The under triturated specimens exhibited inferior compressive strength than for the other 2 groups. The working time was more than the other groups. To seek for an optimum triturated time it seems that triturating for 25sec offers an amalgam mass of optimum compressive strength and at the same time acceptable working time

Evaluation of tooth carving performed by dental students: a comparative study

This study was conducted according to the work performed by first year students, College of Dentistry, University of Baghdad, in tooth carving subject by comparing the crown dimensions, the anatomical landmarks of the crown and the carving quality, of the homework assignment and that of examination. Determining the sites that are more probable to faulty measurement, and should be more attended