Thanks. What I really don't understand though is why they use different equipment for NHS v. private root canals, especially if there's such a big difference in success rates. It sounds to me as if they're just trying to scare me into paying more.

I need a root canal and crown and asked my dentist the difference between NHS and private treatment and was told an NHS root canal costs £90 and has a 40% success rate (success meaning it doesn't have to be redone within a couple of years), but with private treatment (£150) they use better equipment and have a 60% success rate. As for the crown, I can have a base metal NHS crown made in India with a high likelhood of falling out or a private enamel crown that costs twice as much but that is guaranteed for 10 years. Does this sound correct? What a false economy to cover only shoddy work that needs redoing over and over.