Traditional Plastic toothbrushes release micro-plastics which can cause cancer in a later stage in life. Nylon bristles are often too hard and stiff, and if too much pressure is applied during brushing, they can cause gum recession and enamel abrasion. Additionally, nylon bristles can trap bacteria, leading to the development of oral infections and bad breath. These negative effects can be particularly pronounced if the toothbrush is not replaced regularly or if it is not kept clean. For these reasons, some people may find that natural alternatives like miswak sticks are a better option for their dental health.