Of course, there will be residual numbness from the anesthetic which will wear off after a few hours or so. But there are multiple facial nerves that can be affected by the swelling of surrounding tissue as well as damage to certain nerves as a result of the extraction. The inflamed tissue applies pressure to the nerves which results in a numb feeling. Nerves that are damaged during the extraction will most likely reconnect. As they do, there will be that 'itchy' sensation which is significant of the nerves mending themselves.
I had 11 upper extractions and I felt like I had been sucker-punched in the nose! There was no real pain, but there was a feeling like... well, like I had a lemon between my lip and my nose! Yea, it was annoying and a bit uncomfortable but it gradually resided after about 2-3 weeks.
It's a part of the body's defense mechanism and healing process. If it concerns you, ask your dentist to explain it. He 'should' have an anatomical picture of the oronasal anatomy to he can show you what is happening.
Hope this helps.
The swelling will go down in it's own time depending on the amount of swelling which is based on the extent of the extractions you had. Each person and their experience is different in this area. I personally had very little to no swelling (at least none that was noticeable externally - but, then again, I am fat, so my face was 'swollen' beforehand! LOL). I also had no bruising or discoloration.
My gums, of course, were swollen and tender so I applied an ice-pack for the first 48 hrs. On for 20 minutes, off for 20 minutes for the first 6-8 hrs; then on 20 minutes every hour for about 12 hrs (while awake), then when I remembered or felt like it when I was watching T.V. for the rest of days 2 and 3.
The ice-pack constricts your blood vessels and decreases swelling by preventing blood from 'rushing in to protect the injury'. It also decreases the pain a bit by decreasing the swelling and reducing pressure on the nerves. Not to mention, it numbs the affected area; therefore, reducing the pain/discomfort.
If you have more swelling on one side of your face than the other, when you lay down keep the swollen side of your face on the upper side. Blood pools naturally by gravity so by keeping the swollen side 'elevated' you will have less blood pooling on that side. If you are swollen equally, rotate back and forth from side to side.
I am now 7 1/2 weeks out and, for the most part, I am able to make it through the majority of the day without noticing I have my dentures in. It took me about a month or so before I realized I wasn't paying attention to them.
Yes, I still have occasional episodes of being fully aware they are there, but it gets better with time.
As a matter of fact, over the past 2 days I have developed a pressure sore on my lower, inner gum from my partial. My gums have shrunken more and the partial settled down more and it is sitting on my gum. A minor adjustment fixed that and I am just waiting for the area to heal again. Rinsing with very warm salt water 4-5 times a day!
Be patient and it will all get better as you go along. Don't stop asking questions though! Some might be repetitive but, there are always new people joining the site who are seeking answers to those questions (some of which are buried deep in the archives here). And some of the members here are able to share new answers to old questions based on their experiences!