Mercury Flashcards
1
Q
Mercury is a liquid metal that is mixed with various metal powders to form dental amalgam
A
It is classed as a hazardous substance, because it is toxic, and it can enter the body in the following ways:
- Inhalation- toxic vapours are released from uncovered sources at room, temperature and above, and are particularly hazardous because they are colourless and odourless and are difficult to detect
- Absorption- particles can be absorbed through the skin, nailbeds and eye membranes and eventually become lodged in the kidneys
- Ingestion- particles can contaminate food and drinks and can be taken into the digestive system and eventually lodge into the kidneys
2
Q
Dental amalgam has been the material most commonly used to fill posterior teeth
A
Mercury is present in significant amounts in the majority of dental workplaces however, the world health organisation agreed at the MINIMATA TREATY IN 2017 to reduce the amount of mercury in the environment
3
Q
In July 2018, the use of amalgam as a dental restorative was banned in deciduous teeth, in permanent teeth of children under 15, and in pregnant and nursing mothers Unless deemed necessary due to the specific medical needs of the patient
A
