Once a tooth has had a root canal it becomes very dry and brittle, making it more susceptible to fracture. Covering the tooth with a crown (cap) helps protect it. If your tooth already has a crown, you may only need a permanent filling. Your general dentist will determine what type of permanent restoration will be best for you.
We have placed a temporary filling that should stay intact for three to four weeks. We recommend that you return to your general dentist within this period of time.
Yes, you will be fine to drive (unless you have had some type of sedation).
In most cases you can eat whatever you feel comfortable eating. Because the tooth will be tender for several days, you may feel better chewing on the side opposite of the treated area.