This is different for everyone. A lot depends on the healing process of your gums. They are going to change shape constantly over the next several months (6-12 depending on your age and extent of extractions). The bone is going to be moving around and settling. Your gums will be shrinking and building formation the bone.
The denture will provide some foundation for the gums to shape to so, the longer/more you have the denture in, the better your gums will form to them resulting in a somewhat better fit in the long run. The denture is a solid form - your gums are soft tissue that will change daily. If they are left out for extensive periods of time during the initial healing process there is the probability your denture will not fit as well (and sometimes at all) when you reinsert your denture d/t the gums changing shape from the denture mold.
I got my immediate full top denture 02.02.15 and I left them in constantly for the first 48 hrs and rinsed with very warm salt water up to 10 times a day. Then I started taking them out to clean them and to brush my remaining lower natural teeth daily for about 15 minutes at a time. After about 3-4 weeks, I started leaving them out between 2 to 8 hours while I was awake and wore them overnight. At 3 months out, I still wear my top denture all night for the simple reason I still have 10 natural teeth on the bottom ( 5 on each side in the back) and they tend to hit my upper gums when I sleep at night which can be pretty uncomfortable.
I would suggest leaving them out for a night and see how they go back in in the morning. If you feel they are fitting back in without any problems, you are pretty much able to leave them out overnight on a regular basis. If your gums have swollen or changed shape when having them out all night and you are having trouble getting them to go back in with some difficulty, I would continue sleeping with them in at night for a few more weeks until your gums have healed and 'tuffened up' a bit more.
Now, when I am at home, I sometimes leave mine out all day and put them back in at night so I can sleep comfortably without having my bottom teeth poking into my gums at night.
As far as the excessive salivation, you will have to deal with that for a few weeks. The denture is a 'foreign body' in your mouth so you are excreting extra saliva in the hopes of breaking down the foreign body and getting rid of it. Once your body adapts to having the denture there the saliva production will decrease. It's just your body's natural defense mechanism against something that 'shouldn't be there'.
Rinse frequently with very warm salt water. This will expedite the healing process, soothe any sore spots, and aid in keeping your mouth clean (especially after eating!).
As I said, I have had my upper plate (and a lower partial) since 02.02.15. At three months, I feel like I have had them a lot longer! I have developed somewhat of a routine but it's not set in stone. I work, but my schedule is chaotic; therefore, I can't really follow a daily routine.
I sleep with my denture in. In the morning, I get up and start the coffee brewing. Then I remove my dentures and put them in to soak, and rinse my mouth. Breakfast usually consists of coffee and something soft that I can chew without my dentures (eggs, buttered or jelly toast, cereal, donut, yogurt). Then I go in and rinse my denture and partial and dry them, apply Fixodent with Scope (three small dots on my partial, and one continuous line around the upper denture following the groove and taking it across the back of the palate about 1/4 inch in. Instead of applying the little strip across the 'hump', I apply a small circle of adhesive about the size of a dime. I found that this helps form a better suction to the roof of my mouth. Then, I brush my bottom natural teeth, gums, tongue, and roof of mouth and rinse with warm water. This give the adhesive a minute or two to set up a bit before I insert my dentures and it seems to adhere a bit better for me. I also apply pressure to the upper denture by pressing it to my upper palate with the pad of my thumb for about 30 seconds, them pressing up on the sides of the teeth for another 30 seconds to secure them in place.
My dentures stay secured up to 24 hrs using this technique. I do rinse my mouth frequently throughout the day with cool water (cool water doesn't thin the adhesive as warm or hot water would). and I will lightly brush them with a soft bristled brush (I purchased a small child's brush for this because they are less abrasive than an adult's toothbrush) after I eat to remove any residual.
I also refrain from using mouthwash; especially if it contains alcohol. Alcohol based mouthwash tends to break down the adhesive resulting in a loose fit early in the day. Alcohol based mouthwash has also been linked with oral cancer. It dries out the tissues in your mouth which can result in bad breath! When I rinse my mouth, I use plain water, very warm salt water, or I will add a pinch of baking soda to the salt water. If you are cleansing your dentures and mouth on a regular basis, there really is no need for the over-the-counter mouthwash!
When I get home from work, I will eat dinner, then remove and soak my denture for a few hours in plain water for the evening and brush my teeth and cleanse my mouth, then reinsert them before going to bed.
This 'routine' varies depending upon my schedule but it works well for me. As time goes by, you will develop your own routine. Right now, it will be trial and error for you.
As questions come up (no matter how trivial they might seem) write them down and on your next visit to the dentist pose your questions to him/her. If their answer is unclear, don't be timid! Ask them to repeat the answer or elaborate until you understand and feel comfortable. Take notes! You might not remember everything they tell you by the time you get home.
I hope this has sufficed in answering your question(s). Be patient! Adapting to dentures is not an overnight venture; it is a long term journey.
Although, I'm only 5 days out.
I followed instructions, only to find that the longer I leave them out the more they hurt putting back in.
I'm due for a visit in 3 weeks but don't know if I can make it as there are some spots that are causing pain only when I put them in.. I'm fine when they are in and seem to be adopting quite well eating and speaking. The only issue is the intense pain upon reinserting the full upper. The lower seems fine.
Fyllis, I will try your technique.