Can cavities be reversed?

Yes, cavities can be reversed, but primarily only in the early stages before they penetrate too deeply into the tooth. Andrew Huberman discusses strategies for enhancing tooth remineralization and preventing further cavity formation. Here are some key points:

1. Alkaline Mouth Environment: Keeping the mouth's pH more alkaline helps in reducing the harmful effects of bacteria like streptococcus mutans, which produce acid that leads to demineralization of teeth and cavity formation. Strategies include avoiding prolonged exposure to acidic foods and rinsing the mouth after consuming such foods or drinks 1.

2. Remineralization: The process of remineralizing teeth involves providing the right substrates (e.g., hydroxyapatite in some toothpaste) that help reinforce the tooth enamel and potentially reverse early cavities 2.

3. Xylitol: This artificial sugar can create a favorable environment by inhibiting streptococcus mutans from producing acid and even reducing their proliferation. Chewing xylitol gum or using xylitol mints after meals can significantly improve oral health 3.

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     1

     Cavities and Bacteria

     00:31:07
     
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     2

     Oral Health Insights

     00:24:32
     
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     3

     Xylitol for Oral Health

     01:14:23
     
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     4

     Mistakes and Learning

     00:47:27
     

4. Saliva's Role: Saliva contains natural remineralizing agents and helps maintain an optimal environment for teeth health. Ensuring the mouth stays moist and alkaline is beneficial for cavity prevention and reversal 4.

Overall, early intervention and maintaining good oral hygiene with these strategies can help in reversing cavities that have not yet deeply affected the dentin layers of the teeth.