I have a large cavity in my molar (tooth 19). The dentist told me I need a root canal, but everyone I talk to INSISTS that its going to fall out and its a waste of money. My sister who has had 3 root canals said that everyone of them has fallen out and it would save a lot of money if I just got it pulled and got an implant. I don't have dental insurance so I would appreciate an honest answer. I don't have money to throw away on my teeth.