Conclusion
Overt mercury poisoning is rare in the modern
world, although it is widely spread in the environment
both naturally and as a result of pollution. Its
toxicity is well known, though the presentation of
its symptoms depends largely on the route of administration
and its form. Modern clinical use of mercury
appears to be safe, owing to the very limited
exposure in our daily lives, thought caution is
necessary if handling large amounts of mercury or
repairing mercury-containing instruments. The
symptoms purportedly caused by chronic low-dose
mercury poisonings as with dental amalgam remains
unproven, though research continues in this area