Children of this age understand why they have to brush their teeth, and may already have been to the dentist. The challenge at this age is that the child has both milk and permanent teeth, and the resulting uneven positioning of the teeth makes the bristles even more important. Step 3 Toothbrush for 6-9 years old is designed to meet the challenging oral needs at this age. The integrated "solo brush" reaches molars and hard-to-reach spaces between the teeth and gums. It is also designed with a round grip for optimal rotation so no teeth will be forgotten. The overall ergonomic design is perfect for the comfortable use of children and parents. Get Perfectly Prepared with Step 3!