MI paste Self-administration of the product by the patient once in the evening. A pea-size amount of the product should be applied per arch, using a dry finger or cotton pellet to distribute it evenly across all teeth and to work it into the interdental spaces. The product was then retained in the mouth for 1-3 min, and manipulated around the teeth using the tongue, before being expectorated and patient should not rinse it until 30 min.

Pure pearl powder in the form of gel Self-administration of the product should be used once daily (in the evening), after a 2 min manual tooth brushing. .Participants were explicitly instructed to apply the gel by his finger allover the teeth and not to rinse their mouths after application and not to eat or drink for at least 30 min.

Remineralising agent

Scores(0-No visible colour change, 1-Slight white colour change, only visible after air-drying, 2-Slight colour change with certain marked white areas, 3-White consistent colour change, 4-Distinct white colour change)

Computerised software to analyse the change in the lesion