The Nuby 4 Stage Oral Care is designed to provide care for your little one's primary teeth. The bristles on each brush are child-friendly. The silicone messenger is designed with 3 different surfaces allowing parents to clean their baby's mouth easily. Massaging brush-1 is designed specially to massage the gums easily. Massaging brush-2 is designed to encourage little ones for a good start of oral hygiene. The nylon bristle brush is designed to start when teething begins.