Why does the dmd or dds start the root canal on a tooth, then send you to an endo surgeon to complete the process, ?

Complicatios. A general dentist might start a root canal and then encounter a complication that requires completion by an endodontist. Often, the root canal is started in order to provide pain relief for the patient until they can have tooth treated completely by specialist.
You sure? An endodontist should be doing the root canal, a to z, unless there is something unusual that needs unique attention. There is some confusion here; speak with both before i do!

Related Questions

Why does the dmd start the root canal then send you to an endo surgeon to complete it?

Comfort level. If you have pain or a lot of decay often the dentist will do a pain control procedure that starts the root canal and a endodontist will finish it up. Sometimes it is just straight to the endodontist. If your dentist sees potential difficulty or just doesn't like to do root canals he will send you to the endodontist. Many dentist do their own root canals though. Read more...
Relieve pain. Some general practitioners are uncomfortable with root canal therapy so they refer it to an endodontist (root canal ) specialist. In order to get temporary relief for the patient the general dentist will do a procedure called a pulpotomy which removes the the coronal portion of the nerve and thus, resulting in temporary relief. Read more...
Root canal. Sometimes the general dentist will start a root canal to alleviate your pain and then refer you to have the procedure completed. Often times opening the tooth ( starting the root canal) is the only way to allow trapped gases from the infected tooth out which will alleviate pain. Read more...