Abstract
AbstractIn this study, the interaction of packable composite and ormocer with aqueous lactic acid solutions were determined and changes compared with those for a polyacid modified resin composite and a glass ionomer.For each material, namely Solitaire, Z‐100, Definite, Dyract AP and Vitremer, eight cylindrical specimens of 6 mm diameter and 12 mm height were prepared and weighed. They were stored individually in 20 cm3 0.02 mol−1 lactic acid solution for 1 week, then the pH was determined and the specimens reweighed. This was repeated at 1 week intervals until the specimens were 6 weeks old.The results of this study showed that; polyacid modified resin composites and resin‐modified glass‐ionomers were capable of increasing the pH of lactic acid solutions. The same groups showed an increase in mass during the first week. Composite resins and ormocer showed less increase in mass than the others. Copyright © 2003 John Wiley & Sons, Ltd.
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