We all know that toothbrush are soft and contains bristles. But these bristles in a given time span become hard. And directly damage our oral health. So dental experts recommend us to replace toothbrush every 3 months. You must be wondering why to replace toothbrush every three months. There are various reasons to change your toothbrush. The reasons are as follows,
1. They contain viruses and bacteria
2. Toothbrush damages our teeth
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