

Help, a tooth piece came out!
Got an impacted molar tooth extraction done 2 years ago and it was uneventful. In the past one week I had ulceration and pain in the same site and piece of tooth as shown came out, it healed and today again another similar piece came out from the same spot. The 2nd picture shows the current status where there is a small gap as seen.
No pain or discharge currently. What this could be and how to proceed?