Hi - My son broke his 2 front teeth in March. He's been monitored by the hospital every 3 months since then and they believe that he needs root canal filing on at least one of them to stop him having pain when he has cold drinks etc. Does that sound right? My sons dentist has said she can dothe root canal filing under the NHS, but could also do them privately using different equipment that makes it quicker. Is that right also? Thanks