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Assessment of shear bond strength of Polycarboxylate cement reinforced by different amounts of Hydroxyapatite | ||
| MUSTANSIRIA DENTAL JOURNAL | ||
| Article 1, Volume 7, Issue 2, 2010, Pages 161-165 | ||
| Authors | ||
| ; Dr. Mohammed R; ; | ||
| Abstract | ||
| This study was done to assess bond strength of Polycarboxylate cement reinforced by different amount of Hydroxyapatite. In this study a hydroxyapatite materials were added to Polycarboxylate cement at different ratios;10%, 15%, 20%, 25% and 30% ( by weight ) and the bond strength was detected by construction a cylinders from these mixed materials, constructed on exposed dentine of human extracted premolar teeth and by Zwick’s universal testing machine the bond strength were detected for these mixed materials. Results showed that the Polycarboxylate reinforced by hydroxyapatite has higher bond strength than conventional Polycarboxylate cement and the hydroxyapatite powder to Polycarboxylate cement powder ratio by weight best to be 20%. The addition of hydroxyapatite to conventional Polycarboxylate cement increased its bond strength to dentine. | ||
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