But be SURE before you do it, There is no way back. If your bite becomes unbalanced, a partial denture could be the perfect solution for you. Try to get a dialogue going with your dentist on all the reasonable alternatives for your situation. Full set of teeth to full denture is a pretty drastic step. Even if a full denture is realistic for you in some years, you are better off doing it in small steps if there are a few teeth that have to go now.
Some dentures work better than others.
It is not only the skill of the dentist that counts here. The denture moves around with the loose gum that it is based upon. The only reason even good dentures work at all is because the people wearing them learn to keep them in place. The muscles of the lips, cheeks, tongue tighten around the edges of the dentures and hold them into place, and the denture wearers who function really well with their dentures do this automatically. It becomes a reflex.