Question: what to do if filling falls out?
Answer: Remove the Filling and Keep it Safe. Unlike a lost tooth, a lost filling does not need to be immersed in milk to preserve it. ... 
Gently Clean Around the Affected Area. ... 
Use Dental Cement to Secure the Hole. ... 
Treat Any Discomfort While You Wait. ... 
Avoid Worsening the Situation. ... 
Be Alert to Signs of an Emergency.