Dangerous dental product. (Sargenti paste for root canal therapy)

formaldehyde-containing paste known as "Sargenti paste," "RC-2B," or "N-2," has been used as a low-cost, quick one-stop root canal technique for many years. The paste "mummifies" the tooth by replacing the pulp with a toxic substance. The paste doesn't cause problems if it stays contained within the tooth, but therein lies the problem. The paste can be difficult to control during application. It can ooze out of the opening at the bottom of the tooth and reek havoc with other tissues. The paste is not FDA-approved, meaning that the only way it can be supplied legally is by …