Silicone Toothbrush by Jack N' Jill 1 Brush Silicone Toothbrush 1 Brush Product Jack N Jill Silicone Toothbrush products are unique because they are one solid piece of medical grade siliconeright down to the bristles. The brush is designed to be used as a toothbrush not a teether and chewing should be avoided. However we understand this is often difficult to avoid with young babies children and recommend supervision at all times. If the Silicone Toothbrush is chewed the bristles may come off but not to worry. Jack N Jill Silicone Toothbrushes are made of inert medical grade silicone which is non-toxic and if swallowed can pass through the digestive system without any problems. Always check your baby childs toothbrush and remove any loose bristles before each use.