![a tooth with decay](https://www.virginiadentalcenter.com/sites/default/public/education-videos/progression-of-decay-cut-sheet/Image_002.jpg)
The process of tooth decay starts with plaque and bacteria building up on the tooth structure, creating acid.
![crosscut of a tooth with decay](https://www.virginiadentalcenter.com/sites/default/public/education-videos/progression-of-decay-cut-sheet/Image_004.jpg)
This acid begins to erode the hard protective coating on the tooth, also known as the enamel.
![cross cut of a tooth with a cavity](https://www.virginiadentalcenter.com/sites/default/public/education-videos/progression-of-decay-cut-sheet/Image_006.jpg)
Once the acid breaks through the outside layer of the enamel, the decay spreads faster due to the softer nature of the underlying layer, called the dentin.
![crosscut of a tooth with inflamed roots](https://www.virginiadentalcenter.com/sites/default/public/education-videos/progression-of-decay-cut-sheet/Image_008.jpg)
If the decay is allowed to expand through the dentin it can penetrate the interior of the root, requiring additional procedures to remove the infected tissue.
![crosscut of a tooth with extreme decay](https://www.virginiadentalcenter.com/sites/default/public/education-videos/progression-of-decay-cut-sheet/Image_010.jpg)
A range of external damage can result from this decay as well, such as cracking or fractures, and can result in losing the tooth entirely.
![a close up of a tooth with damage](https://www.virginiadentalcenter.com/sites/default/public/education-videos/progression-of-decay-cut-sheet/Image_012.jpg)
It is important to detect and address issues of tooth decay early in the process to prevent these consequences. Regular visits to your dentist, good oral hygiene, and a proactive attitude towards your dental health will help minimize this risk.
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