|
Cola Drinks |
Orange Juices |
P-value |
|
| pH |
2.70 (2.39– 2.88) |
3.73 (3.12– 4.08) |
< 0.001 |
| Titratable acidity* |
705 (563 – 1025) |
4150 (1600–4450) |
< 0.001 |
| Initial erosive potential |
3.75 (1.40– 5.20) |
0.34 (0.00– 1.40) |
< 0.001 |
| End erosive potential |
480 (377 – 711) |
271 (112 – 550) |
0.004 |
|
|
| * Titratable acidity denotes the amount (µL) of base (1 M NaOH) needed to reach pH 5.5 in the drinks. The initial erosive potential calculated as the amount of HAp (mg) lost per sec per liter soft drink during the first minutes of exposure. The end erosive potential calculated as the amount of HAp (mg) lost per liter soft drink after 30 min of exposure. P-values were obtained by Wilcoxon’s rank-sum test. |
|