Figure 2. Erosive potential over time. (A) Erosive potential of 5 carbonated cola drinks and 5 orange juices selected as representatives of their groups for the first 3 min upon exposure to HAp crystals. (B) Erosive potential of the same drinks over the whole 30-minute test period. All drinks in the study (N = 20) were tested at least 3 times, with a mean percent relative standard deviation between repetitions of 24% for the juices and 23% for the colas. As shown, the sequence of the drinks changed, so that some of the orange juices became considerably erosive with time. The 5 carbonated cola drinks (1–5) and 5 orange juices (6–10) in Fig. 2 are (1) Coca Cola light, (2) Pepsi Max, (3) Coca Cola, (4) Pepsi Cola, (5) Coca Cola light with lemon, (6) Capri-Sonne Orange, (7) Sun Top, (8) Rynkeby with sour oranges, (9) Rynkeby with organic oranges, and (10) Rynkeby with sweet oranges.