Brush your little one's teeth the easy and comfortable way. Help establish good oral hygiene habits that will last a lifetime with Dr. Brown's Infant-to-Toddler Toothbrush. nstructions for use. Clean toothbrush before and after each use with warm water. Inspect toothbrush before and after each use and discard if worn or damaged. Do not boil, steam or microwave sterilize. Do not put in the dishwasher. Dentists recommend replacing your toothbrush every 3 months.