I Had a Root Canal

I had a root canal done and a bridge was put in. Three days ago it came out. The dentists office was closed for the weekend. I had to wait until Monday. I had the bridge put in again with temporary cement. It came out again a half hour after I returned home. I told the dentist it came out. The dentist told me they haven't any permanent cement and I would have to wait. The dentist told me to use toothpaste until I can have it done permanently.