Q. Hello Dr Komal Suri, I am a 32 year old, have had eight tooth fillings done with silver amalgum about twelve years ago. I have not been to a dentist since, Recently I have noticed three dark spots on the teeth inside my mouth which also cause some uncomfortable pain. What could be the cause of these symptoms? Is it advisible to have the old silver amalgum fillings replaced with white ones? as I belive silver amalgum is toxic heavy metal which can promote disease like cancer. Thanking you in anticipation Kind regards