All my molars had them silver fillings since the beginning of time. Ground them out and replaced with composite that fell out over the years. No dentist will replace or fill them and say the 'pockets' are too deep to fill, claim I grind my teeth which I don't. Even the original dentist says there were not fillings there. Disregards the x-ray evidence. Root canal and crown or pull the things. 1 Cracked (lower right) about a year and a half ago, it's fine now. Another cracked and started healing (lower left) but I didn't wait long enough (only about 6 mos) and ate stupid stuff that re-cracked it. Takes a long time to heal a tooth and a lot of patience as long as it don't kill in pain or get infected I don't want my cracked molar pulled. Anyways that's my story and I'm sticking with it. What I realized with dentists in general after experiencing this complete BS is the need for job security. That is all they are looking for at my age. Fill the f*king holes missing fillings and I could be good for another 10-20? years. F'n asswipes all of them. Okay rant over.