Q. I am in the middle of root canal work but have been told that my tooth root is curved and that the instruments used to treat a curved root arent available on the nhs.i have seen my x ray and the root is indeed curved. the dentist says this may be because i grind that side of my jaw during the night. he states he can refer me to a private dentist, but the cost of this work would be around £800 – £1000. is this correct? and could this not be completed by another dentist with the right equipment on the nhs.the tooth has also now cracked and im in need of a crown whereas i was just having a cap, this is costing £198 so i dont really want to be spending alot more than that. could you advise on this please?