Impinging jet test

The laboratory impinging jet test for evaluating the acid erosion of dental cements is described in Chapter 10. Using this method with lactic acid-lactate solutions, Wilson et al. (1986b) found, for one cement, that the erosion rate was virtually zero at pH = 5 0, 0-38 % at pH = 4-0 and 5 7 % at pH = 2-7. For a range of cements Wilson et al. (1986a) found erosion rates varying from 3 0 to 5-7 % in lactic add solutions of pH = 2-1. The... 

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