Can mercury in amalgam fillings good or bad for you?

Neither: Mercury in amalgam fillings is basically inert. It is not bad for you, but a good material to restore teeth.

Most Likely Not: This is very controversial question depending on your point of view. My personal feeling is that the amount of mercury released is too low to be of clinical significance and that amalgam restorations are relatively safe. I mainly use composite restorations however because they have some advantages (cosmetic & functional), but disadvantages as well( decay more easily & may contain bpa).

Neither good nor bad: Mercury in amalgam fillings are usually stable when not drilled to remove. But there are cases where a person may be sensitive to the mercury and shows symptoms.

Not Bad: Certain precautions must be taken during the placement and handling of amalgam fillings, once you have the filling placed you should not have any noticeable mercury leaking, it becomes a stable compound. Over the life of your filling some traces of mercury may leak but nothing to compare with the amount you get from eating fish.

It is good and safe: Most research finds no relationship between fillings and symptoms of mercury poisoning or other side effects. Eventually, any cavity if not treated, can lead to pain, infection, root canal and even tooth loss. See your dentist for evaluation, x-rays and treatment.

Amalgam: Has been around in dental fillings for a century or more and has no known ill effects despite all the hype. It is neither good or bad for you. A better material is composite because it releases Fluoride and makes the tooth almost as strong as it was before the decay. Amalgam just fills the hole.

If not broken why: fix it? Most research finds no relationship between fillings and symptoms of mercury poisoning or other side effects. Eventually, any cavity if not treated, can lead to pain, infection, root canal and even tooth loss. See your dentist for evaluation, x-rays and treatment.