Dear practo user One reason for cavities at this age could be old history feeding. Fluoride toothpaste will be useful for present and coming teeth.

There are several preventive measures and procedures to avoid this issue in future. If you wish to know in detail get in touch on personal chat.

Cavity usually occurs due to improper cleaning. For a 3 year old kid even though she might brush twice daily may not be as effective sometimes. It's better to avoid sticky foods and rinse after every meal properly. Treatment for this is tooth filling.

Cavity even after brushing twice may occur because of insufficient cleaning or frequent snacking... brush before going to bed n after having breakfast... And rinsing after every meal or snack including chocolates n chips is must... Cure may include professional cavity restoration or other extensive procedures depending on condition..