Is it even possible to keep food from getting under my dentures??

Hmm, I've honestly not had any trouble with that just yet. I use Fixodent powder. Apparently my dentist wants me to upgrade to paste at some point, but I don't see the point so long as this keeps working. I might try it after I use all of this up.

My only guess would be that maybe the denture's not snug enough, to your palette or your gums, but if you're getting sore spots from the rubbing, I don't see how that could be.

The short answer is yes. It takes time for your mouth to get accustomed to having dentures in there. The lower is always more troublesome than the upper. Over time your mouth muscles will get trained to keep the denture seated on your gums. Right now with all of the healing you are doing, your gums are changing every day. Make sure your dentures are firmly seated on your gums before attempting to chew and make sure you try to distribute food evenly on both sides, place the food as far back on your teeth as you can and work them in a small grinding motion, keep a glass of water handy and take a sip when you have food in your mouth, it will help soften the food and make chewing easier.

Less adhesive works better than more typically. With new dentures especially immediates the fit will be less than perfect for some time. I kept trying different foods and really indulging in those I could master and then kept going back to those that were not working out so well. Frustrating to say the least but don't give up.

I am a 55yo single woman.  I haven't bother to date for 9yrs because of denture problems, just to embarrassing and I am told I am very good looking.  I have just an upper and most my bottom teeth.

No matter how many times I have them re-aligned, and use poli-grip/fixadent, food gets in.  I have to excuse myself during a meal to go to the bathroom.  I wore out my first pair in less than 7 yrs.  this new pair look awful, yet I have to pay for them.  I keep bitting the inside of my lip till it is bloody and swollen, then I can't eat with the denture at all until it heals.  Dentist is telling to keep practicing.....huh?  I am not a new denture wearer, I know the drill.  I wish I could affor the implants.

I am a 55yo single woman.  I haven't bother to date for 9yrs because of denture problems, just to embarrassing and I am told I am very good looking.  I have just an upper and most my bottom teeth.

No matter how many times I have them re-aligned, and use poli-grip/fixadent, food gets in.  I have to excuse myself during a meal to go to the bathroom.  I wore out my first pair in less than 7 yrs.  this new pair look awful, yet I have to pay for them.  I keep bitting the inside of my lip till it is bloody and swollen, then I can't eat with the denture at all until it heals.  Dentist is telling to keep practicing.....huh?  I am not a new denture wearer, I know the drill.  I wish I could affor the implants.

I am a 55yo single woman.  I haven't bother to date for 9yrs because of denture problems, just to embarrassing and I am told I am very good looking.  I have just an upper and most my bottom teeth.

No matter how many times I have them re-aligned, and use poli-grip/fixadent, food gets in.  I have to excuse myself during a meal to go to the bathroom.  I wore out my first pair in less than 7 yrs.  this new pair look awful, yet I have to pay for them.  I keep bitting the inside of my lip till it is bloody and swollen, then I can't eat with the denture at all until it heals.  Dentist is telling to keep practicing.....huh?  I am not a new denture wearer, I know the drill.  I wish I could affor the implants.