Sixth-age teeth are rotten to the point where only the roots remain and generally need to be extracted because there is no longer any value in retaining them for treatment. For the role of the sixth-aged teeth, they are the most important in the mouth and account for most of the chewing function. If it is very bad, it needs to be restored as soon as possible after extraction, and dental implants are now generally recommended. After the root is removed from the sixth tooth, the implant will be restored after the bone has healed, usually in 3-6 months. After the dental implant restoration, the bite and chewing function can be restored and the teeth on both sides can be prevented from tilting towards each other. If the roots of the tooth are rotten, it should be treated as soon as possible. It is likely that the roots will be inflamed, so it should be extracted as soon as possible and restored with dental implants.