مقايسه خواص فيزيكي سيمانهاي ترميمي دندان حاوي عنصر روي ساخت داخل كشور با استاندارد جهاني

Comparison of physical properties of zinc contained restorative dental cements made in Iran with world standard

Background: Zinc contained cements are commonly important cements used in restorative dentistry. Therefore, cements that are used must be tested and assured. Objective: To measure compressive strength, setting time and solubility and disintegration of Iranian zinc contained cements included zinc oxide - eugenol, zinc phosphate and zinc polycarboxylate. Methods: An Iranian company dental products, used as prototypes and a German company dental products as proof samples. For compressive strength test, 11 samples provided from each types of cements. For setting time test, 1_6 samples provided from zinc oxide - eugenol cement and I 1 samples from two others. For solubility and disintegration 11 samples provide from zinc oxide - eugenol cement. A Hypothesis test with confidence interval of 95% was used for means estinating. Findings: The means of zinc oxide - eugenol, phosphate and polycarboxylate cements are: 12.58, 37.21 and 35.86 MPa. Setting time are: 49.04, 5.41 and 2.5 minutes. Solubility and disintegration of zinc oxide - eugenol cement is 8.44%. Conclusion: By comparision of results and standards, itʹs concluded that none of Iranian cements are standard and not recommended for use.