Nuby - Toothbrushes The Nuby beginner toothbrushes promote the early development of good dental hygiene. The bristles are designed especially with a child in mind.� The result of this special attention to detail is a product your child can use with ease. The first step allows parents to brush and massages and helps clean during the teething process. The 3 step design provides a smooth transition. All Nuby products are made of safe durable non-toxic materials and exceed all government safety regulations and standard.