Hi Riten. I’ve had one of my back molars removed three years ago (I don’t believe it should have been removed as the dentist failed to perform a root canal and decided to remove it). That being said the molar next to it has had root canal treatment. My question is how can this tooth be protected and can it be retreated with a ‘new’ root canal? My dentist thinks it won’t last more than another 2/3 years as an estimate and has suggested capping it? I am looking for a more long term solution. I am 32. The other side is fine and usable with minor fillings.