Root canal treatment involves removing the pulp and infected tissues from the inside of your tooth and the roots. This tends to make the tooth more brittle and prone to fracture. To avoid this, we recommend that a dental crown (or full coverage cap) be done after your root canal treatment.However, you do not have to do this immediately. It can be delayed as long as you are aware that the tooth may be in a weakened state, and hence should avoid putting too much pressure on it.