How Successful People Make the Most of Their Oral Cancer Screenings

https://meleen14v6.doodlekit.com/blog/entry/10738802/what-is-the-root-canal-and-root-canal-treatment

3. Tissue The third factor I see for failing is cells that remained in the tooth at the time of the very first root canal. This tissue acts as a nutrient resource to bacteria that can re-infect the root canal