I used to envy my older sister who had perfect teeth, while I was cursed with big teeth and a small jaw and constantly needing extractions, including all 4 of my big back teeth. Consequently, I developed a phobia about the dentists and regularly had nightmares where they chased me with pliers.
In my 30's I opted for dentures had (with the help of Valium) all teeth out and top &bottom dentures inserted same day. All on the NHS.
40+ years on, I still have the same set, which has never given me any problems - the dental technician told me that it is the tech, rather than the dentist who ensures a good fit.
Now, I no longer envy my Sister, who is always at the dentist, paying ££££ for crowns, replacements etc. I haven't seen a dentist for 40+years