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. 2016 Jan 21;11(1):e0147235. doi: 10.1371/journal.pone.0147235

Fig 1. The percentage of elution Ca in solution and residual Ca in dentin in the process of demineralization by 2% HNO3.

Fig 1

The time setting for the duration of demineralization was based on the results of the percentage of elution Ca in solution and residual Ca in the dentin which were measured over time using the Calcium E test kit in order to estimate the degree of demineralization.