Hulda Clark in her books recommends all root canal filled teeth should be removed because many illnesses have been traced back to bacteria trapped in the anaerobic environment of the root canal.
Some good sources are Dr Hal Huggins,Dr Weston A Price and Dr George Meinig.
www.ppnf.org to get books by the above authors.
The Cure For All Diseases by Hulda Clark
The Root Canal Cover Up by Dr George Meinig.
I would search for a holistic/biological dentist on the internet in your area...especially those with training from Hal Huggins.
Dr.David Hefferon is in Harley St London... www.theellaclinic.co.uk
Robin Allan
Chek Practitioner
Natural Health Coach
http://www.robinallan.com
robin_allan@hotmail.com
07967-366470