Statistical analysis
Normality was checked using Kolmogorov–Smirnov test. Non-normally distributed variables were presented using medians and inter quartile ranges (IQR). Intention to treat analysis was used. Chi squared test was used to compare changes in ICDAS and NYVAD scores among groups and McNemar test was used to compare changes across time within the same group. For LAA, a score of more than 7 was considered active and less than 7 indicated inactive lesion [