START BEFORE THE FIRST TOOTH
Even before your baby sports her first tooth, it’s a good idea to get into the habit of wiping her gums with gauze or a soft wet washcloth during bathtime.
You don’t need to use any toothpaste yet. Simply wrap the cloth or gauze around your index finger and rub it gently over her little gums.
Getting your baby used to having her mouth cleaned as part of her daily routine should make it easier to transition into toothbrushing later on.