How often should I replace my toothbrush?

We know that brushing your teeth is essential for oral health, but how often should you replace your toothbrush? When does a toothbrush lose its effectiveness?

Most dental professionals recommend replacing your toothbrush every 3 to 4 months. The American Dental Association (ADA, 2022) recommends replacing your toothbrush every three to four months. Bristles may become visibly matted or frayed.¹ Whereas a randomized controlled trial with 96 participants showed that there was a reduced efficiency in plaque removal and increased gingival inflammation after four months (Schmickler et al., 2014).²

Regular replacement of your toothbrush is important for healthy gums.

1. Quality bristles effectively remove plaque.
2. Worn bristles have the potential to irritate your gums.

There are signs that your toothbrush should be replaced.

• Frayed Bristles: If bristles are frayed or flattened, they will not clean your teeth effectively.
• Illness: If you have been sick, replace your toothbrush to reduce bacteria.

For electric toothbrushes, follow the manufacturer’s recommendations, which is typically three to four months. For children, their toothbrush may need to be replaced more often. They often brush more briskly and bite on their toothbrush bristles. Again, if bristles are frayed, it needs to be replaced.

Tips for Maintaining Your Toothbrush:

• Rinse After Use. After each use, rinse your toothbrush with water to remove any remaining toothpaste and debris.
• Store Upright. Store your toothbrush in an upright position and allow it to air dry. Avoid keeping it in a closed container where bacteria can increase.
• Avoid Sharing. Sharing your toothbrush can spread bacteria and viruses.

Replacing your toothbrush every three to four month is critical for optimal oral health. Over time, toothbrush bristles become frayed and less effective at removing plaque and debris from your teeth and gums. Regularly replacing your toothbrush will help you have healthy gums and teeth!

References

1. American Dental Association. (2022). Retrieved from Toothbrushes | American Dental Association (ada.org)
2. Schmickler J, Wurbs S, Wurbs S, Lange K, Rinke S, Hornecker E, Mausberg RF, Ziebolz D. Influence of the utilization time of different manual toothbrushes on oral hygiene assessed during a 6-month observation period: a randomized clinical trial. J Periodontol. 2014 Aug;85(8):1050-8. doi: 10.1902/jop.2013.130442. Epub 2013 Dec 12. PMID: 24329045.