I would address this with your dentist, but it may be from having the impressions made. But, I would call the dentist. Panic attacks occur when our brain senses the "fight or flight" signal when it's not needed, and pours adrenaline throughout our bodies. Since we are not in this type of situation our bodies don't know what to do with all this adrenaline and a panic attack occurs. Staying calm but busy during this is the best way to handle it. Keep in mind that you're okay, not dying, your body is just reacting to this rush of adrenaline. So by doing something physical we give this adrenaline something to do, and will feel better. It's real, but we won't die from a panic attack.
hi, in my personal opinion, i relate most panic attacks to acid reflux. with respect to the pain under your chin, i think its temporary.