What Causes Squishy Feeling Around Jaw Line After Getting Teeth Filled?

I went to the dentis the other day and had a couple of teeth filled on the left side of my face. During the procedure the right side of my face felt heavy. I thought it was due to the nitrous oxide mask. After the procedure I realized that the right side of my face was swollen. That night my eyelid, below my eye, the side of my face, and close to my ear was swollen and it felt like tiny air bubbles were underneath the skin. I used ice every ten minutes on and ten minutes off for two hours with no change. Finally today, two days later my face and eye are back to normal. I still have a little of the squishy, air bubble situation around my jaw line, but not too much. What caused this?