I ended up in the hospital after my last dental filling. Didn't know I had a neuromuscular disease at the time. As soon as I got the injection, my heart started pounding and felt like it would jump out of my chest. The next day, I had more episodes of this and became very weak and shaky and had a hard time breathing. I just got worked up for heart issues and told I had an arythmia. I will think twice about another filling.