Allowing tooth decay (caries) to go untreated will result in destruction of additional tooth structure, and the need for more extensive dentistry, which may include root canal (endodontic) therapy, tooth removal (extraction), and tooth replacement (for example, with fixed bridgework, removable dentures, or dental implants).

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Eventually, the bacteria that are present in a tooth cavity will reach the hollow inside of the tooth (pulp), and will have an open pathway into your jawbone. This can cause pain, swelling, numbness or altered sensation; and can lead to tooth loss. Premature loss of teeth causes the other teeth to shift, altering the bite, and affecting the jaw joints.