Would my darkened tooth get better on its own?

Unfortunately No: Teeth that turn dark can do so after root canal therapy, if they need root canal therapy, or if they have a large silver filling. All of these causes can be addressed by your local dentist. The toot will not repair itself or lighten in color on its own.

Darkened tooth: Your dentist can help.you with this. This can happen following root canal treatment, if there is extensive decay, or following trauma. See a dentist and get it checked and find out your opti ns for getting it to look better.