Dr. Payal Bhalla, lead dentist and clinical director at Quest Dental, highlighted that brushing your teeth in the shower may lead to bacteria entering your mouth from unexpected sources.
“Using the same water source for cleaning your body and brushing your teeth can result in the transfer of germs from other parts of the body to your mouth, potentially compromising your immune system and increasing the risk of illness,” Bhalla explained.
She further noted that showerheads can harbor bacteria. When you brush under the shower, your toothbrush may be exposed to these bacteria, raising the chance of sickness. Additionally, sharing a shower with someone else increases the risk of cross-contamination, especially if toothbrushes are kept in the same space or used improperly.
Dr. Bhalla also pointed out that brushing in the shower can be hazardous, as the combination of toothpaste and water can create a slippery surface, increasing the risk of falls.
Beyond hygiene concerns, the hot water in the shower could damage your toothbrush. “Hot water can soften the bristles, making the brush less effective at cleaning your teeth,” Bhalla warned. She also advised against using electric toothbrushes in the shower, as prolonged exposure to water could damage the mechanism, even though many are designed to be waterproof.
Ultimately, while brushing in the shower may save time, the potential risks to your health and safety outweigh the convenience.
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