To whiten teeth I think one should go for whitening toothpaste. That's a better option rather then using salt.

I do not think you will feel much pain as they just make you  numb.

I think maternal grandfather

Yes, I think you can go for it.

Either you should go to a good dentist or you can go for Denture Adhesives as they are really useful. A friend of mine have suggested me this brand  securedenture.com  I am gonna try this. If you want you can also try this as he was facing the same problem but as he started using … Read more

You can use an over the counter solution, or you can soak them in pure distilled white vinegar over night. You can also brush them with baking.