Root canals
Anaerobic bacteria within root canal teeth produce toxins that are among the most poisonous chemicals on the planet. For this reason, they can produce disease at little more than the molecular level. Far below what can be seen on an X-ray. These toxins can be related to almost all of the autoimmune diseases, but since the profession almost demands that dentistry place 30 million per year, and since they are a high profit item in dental service, they will continue to be defended as "preventive dentistry" for years to come. For those interested in good health, however, you have a right to know that these toxins are so potent that just a handful of molecules can create autoimmune diseases in susceptible people. Important to know is that the problem is the presence of these toxins in the periodontal ligament - the attachment between tooth and bone, and not in the pulp chamber. Yes, a dentist can sterilize a column of air in the center of a tooth, but, regardless of what you embalm the pulp chamber with, it is still dead. Another interesting point. A healthy body will reject dead things and create an immune action around the dead part. This results in pain around a dead tooth - which is the sign of good health. If it doesn't hurt, the immune system is not healthy enough to launch a defense, therefore the toxins are being spread all over the body.

Implants
This is a bad topic, again, because both dentistry and patients have adopted them wholeheartedly. Financially rewarding and easy to sell. No one wants removable appliances in their mouth, nor the additional care it takes to wear these appliances. As my professor in immunology at the University of Colorado once said when I asked about implants, "Anything implanted in bone will create an autoimmune response. The only difference is the amount of time it takes."

Aluminum
Is present in porcelain and about half of the composites (plastic replacements for dental silver-mercury fillings). It is damaging to the nervous system, and great improvements can be seen within 6 days of removing aluminum materials from the mouth. Esthetically beautiful, but they don't show in the casket.

Cavitations
Are the new kid on the block. Although described by the Father of Modern Dentistry, Dr. G.V. Black in the early 1900's, and published in many dental articles (mostly outside the US), they are unknown to many dentists. Even the ADA claims they do not exist. When a tooth is removed, the periodontal ligament that attaches the tooth to bone (similar to the afterbirth around a fetus) is left in according to instructions from dental schools. The ligament often prevents bone healing of the socket area. Today, this hole is termed a "cavitation". This is almost always true (over 99% of the time) in wisdom tooth areas. These holes left unhealed are generally lined with necrotic (dead) bone and many of the same anaerobic bacteria that are found in dead or root canal teeth. The ones that are often related to autoimmune diseases. Porphyrins (the energy producing molecule in the blood stream) are particularly attacked by products within the cavitation, therefore offering less oxygen transport and energy molecules for healing and daily operation of the body.