Cherish Baby Care Baby Toothbrush Set Designed with the help of a pediatric dentist! PHASE 1: 3-6 Months Clean or massage your baby\'s gums or remove milk build-up on the tongue with the infant finger toothbrush. PHASE 2: 6-12 Months Rub this double-sided baby oral cleaner toothbrush along the teeth and molar to clean and massage the top and bottom..