What is a possible consequence of not replacing worn-out toothbrushes in time?

Not replacing worn-out toothbrushes in a timely manner can lead to a higher likelihood of gum disease and inefficiency in plaque removal. Over time, the bristles of a toothbrush become frayed and worn, which diminishes its effectiveness in cleaning teeth and gums. Worn bristles are less able to reach into the spaces between teeth and along the gum line where plaque and bacteria accumulate. This accumulation can lead to gingivitis, periodontitis, and other forms of gum disease if proper dental hygiene is not maintained.

Additionally, a toothbrush with worn bristles may not provide an adequate clean, leaving behind harmful plaque that can contribute to cavities and gum issues. Maintaining the integrity of the bristles is essential for effective oral hygiene, making timely replacement an important practice for dental health.