Q. Hi, my 3rd from back (molar) tooth has broken during my last dinner when I chewed on a very hard piece of food. Only a small piece of my tooth came off and has not gone past my gum line, there is about 1 millimeter of tooth until the gum begins. There is no pain and it has previously (many years ago) had a filling. I obviously know i have to go the dentist, but I am just after maybe a reason for this happening and a rough guide of what will happen next. Thanks,