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Method overview.
| Analysis undertaken | Group 1 (fluoride release/recharge) | Group 2 (mechanical properties; elastic modulus/hardness) |
|---|---|---|
| Specimen number per material | 3 | 6 |
| Storage media | Deionized water | Deionized water (3) Lactic acid pH 4 (3) |
| Analysis times over 18 mth aging | Bimonthly (0, 2, 4, 6, 8, 10, 12, 14, 16, and 18 mths) | 24 hrs, 1 mth, 3 mths, 6 mths, 12 mths, and 18 mths |
| Time elapsed following 18 mth F− recharge before recharge analysis | 2 months | 24 hours |
