If a part of the tooth has broken off, it might expose the inner contents of the tooth called the pulp. This part of the tooth is very sensitive and is at risk of becoming inflamed or infected. Also, for teeth that have recently had a deep fillling done the dental pulp may become inflamed as well as become very sensitive to temperature changes.
Pulpotomy involves partial removal of this exposed or inflamed pulp and protection of the remaining pulp with a Bioceramic material. This is often done using the Operating Microscope.
The benefit of this procedure is that it gives a chance to the remaining dental pulp to survive and remain healthy and allows the tooth to continue to develop.