Vaccines
Thiomersal, an organomercury compound, has both toxicity and beneficial properties. Although it is dangerous, it acts as an antiseptic and antifungal agent due to its ability to kill disease-causing biological agents. In the past, thiomersal was commonly used as a preservative in many vaccines. However, in 1999, the Centers for Disease Control and Prevention advised vaccine manufacturers to eliminate thiomersal as a precautionary measure. Despite this, the scientific consensus remains that there is no substantial evidence indicating that the mercury in thiomersal posed any significant danger.
Amalgams: A Controversial Practice in Dentistry
Amalgams, a mixture of metals including silver, copper, and tin, bound together by mercury, have long been used in dentistry. While many medical fields have moved away from the use of mercury, dentistry continues to employ this controversial element in the form of amalgam fillings.
In the United States, when mercury was being abandoned in medicine, the American Dental Association (ADA) was founded by 26 dentists who staunchly defended the use of mercury in dentistry. Amalgams made from a combination of metals and mercury serve the purpose of filling decayed teeth.
However, concerns have been raised about the potential risks associated with the use of amalgams. It is possible for the metals in amalgam fillings to decay over time, potentially exposing the mouth to mercury. Despite this, the ADA maintains that the small amount of mercury released poses no threat to patients.