Table 2. Mean and standard deviation of the atomic percentage (wt%) of specimens' elements.
| CE* | Baseline analysis (24 h) | After aging (6-months degradation) | ||||||
|---|---|---|---|---|---|---|---|---|
| without chitosan | with chitosan | without chitosan | with chitosan | |||||
| Etch-and-rinse | Self-etch | Etch-and-rinse | Self-etch | Etch-and-rinse | Self-etch | Etch-and-rinse | Self-etch | |
| C | (44.93 ± 6.9) | (37.98 ± 2.8) | (40.97 ± 2.9) | (39.73 ± 3.4) | (38.37 ± 0.4) | (38.68 ± 2.1) | (36.91 ± 2.2) | (39.57 ± 0.6) |
| O | (34.47 ± 2.0) | (42.98 ± 10.2) | (42.17 ± 2.7) | (37.52 ± 3.0) | (44.89 ± 3.6) | (41.97 ± 4.8) | (40.80 ± 4.7) | (40.20 ± 6.1) |
| P | (6.34 ± 1.4) | (5.73 ± 1.9) | (5.09 ± 0.0) | (6.80 ± 0.3) | (5.08 ± 0.8) | (5.96 ± 0.9) | (6.84 ± 0.8) | (6.17 ± 1.6) |
| Ca | (13.91 ± 3.3) | (12.85 ± 5.4) | (11.36 ± 0.1) | (15.65 ± 0.0) | (11.50 ± 2.2) | (12.96 ± 1.9) | (15.00 ± 1.7) | (13.53 ± 3.9) |
*CE = chemical elements.