Which kind of dental filling - amalgam, composite, metals, ceramic or glass ionomer - is most resistant to damage and erosion?

Headaches, especially in the scalp, temples and in the sides of the face are usually caused by excessive muscle tension. Patients with a history of clenching, grinding of teeth and generally enlarged muscles (a head that appears large, a square jaw) may have frequent headaches. This type of headaches can occur regardless of the type of dental work done. Generally, the muscles and joints in the skull are very tolerant of changes to the teeth and bite. There may be patients who are hypersensitive to minor changes who cannot tolerate even minor changes to their teeth.

Mercury is a toxic heavy metal which is widely dispersed in nature. Most human exposure results from fish consumption or dental amalgam. Human exposure to the vapour of metallic mercury dates back to antiquity but continues today in occupational settings and from dental amalgam. Health risks from methylmercury in edible tissues of fish have been the subject of several large epidemiological investigations and continue to be the subject of intense debate. Mercury is most notable for its neurological effects. Too much mercury can cause numbness, memory issues, anxiety, low mood, and tremors.