The study of compressive strength of phosphate-bonded investment materials / 华西口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>The purpose of this study was to compare the compressive strength of phosphate-bonded investments.</p><p><b>METHODS</b>The three sorts of investments were mixed according to manufacturer's recommendation before poured in the molds. After heated up to 900 degrees C, every sample was mounted on a universal experimental machine to test its compressive strength in ambient.</p><p><b>RESULTS</b>Significant differences were found between the four groups(P < 0.01).</p><p><b>CONCLUSION</b>From the data above it is concluded that the compressive strength of X-20 Chrome Investment mixed with the special liquid was the highest.</p>