Table 2.
Content of Ca and P in various layers of the enamel
| Ca | P | |
|---|---|---|
| Surface layer | 39.83 + −0.14% | 18.53 + 0.08% |
| Middle layer | 39.53 + −0.13% | 18.16 + −0.07% |
| Enamel-dentine border | 39.07 + −12% | 17.92 + −0.07% |
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