Your gums are swollen around the teeth immediately before and after the gap left by the extracted teeth. This is likely due to the rubber bands and elastics tied around those 2 teeth in an effort to close the gap because they attract more plaque (bacteria films). Its hard to tell here if there was any other reason because its localised to those teeth only.
What brackets are you using? Are they metal or ceramics? Do you have metal allergy? Is this the first time you are experiencing this?
Often it is usually transient but if the overgrowth is severe, it can lead to pocketing and potential gum problems around those teeth. It is best to review this with your treating dentist.
Sincerely
Dr Jerry Lim
