Table 3: Drug release rates calculated for the different mathematical models.

Mathematical modelKetorolac SiO2 1 : 4Ketorolac SiO2 1 : 8

Zero-order [%/h]30.51 0.09563
First-order [h]3.0570.00677
Higuchi [%]72.971.69
Hixon-Crowell [h−1]0.53640.0081
Hyperbola [%/h]176.6288.01