I have an achy tooth that has a crack through it also .my dentist today took x-ray and it indicated small infection at root.I get panics at dentist and with injections and am only allowed non adrenalin based local anaestethics. I have heard weird stories about root canals e.g. they can give you major trouble when flying ,that they don't work etc ,I have heart murmers and am worried about infection ,is root canal my best option ?its not a molar tooth.my dentist said if it was her she would have the root canal done .im freaking out about the whole thing and scared of making a clot of myself by having a full blown panic.