An old toothbrush can be less effective at cleaning teeth and can harbour disease-causing moulds and bacteria, and can contribute to the development of gingivitis. Generally, it is recommended to replace toothbrushes every three months, or when the bristles are worn. Signs of wear include frayed bristles and darkened colour, which may indicate the presence of mould. Proper care of a toothbrush can extend its usable period. Electric toothbrushes are recommended, as are soft bristles and fluoride-containing toothpastes.
- Most dentists, and the American Dental Association (ADA), recommend changing your toothbrush every 3 months.
- Fungus and bacteria can also develop in the bristles if not taken care of properly.
- Ask your dentist during your next dental checkup and cleaning for recommendations about what you should be buying based on your individual needs, your particular dental health state, etc.
“If knowing that bacteria and fungus accumulate on your toothbrush bristles over time isn’t enough reason to replace your toothbrush more often, there are also a number of other risks and uninviting issues involved with not replacing your toothbrush.”