My DM (88) had all her teeth out in her 20s, this was common practice, no more tooth-ache.
I have had years of dental treatment, School Dentist (does any-one remember large van in playground?) ruined a lot of my teeth, fillings had to be re-done in my late teens. Those were the days of no pain relief just straight forward drill etc, no wonder I hate Dentists.
Last treatment I had was 6 teeth extracted & new dentures, teeth were extracted at the Hospital, staff were wonderful. I'm due a check-up & will have to request new dentures as I'm not happy with them, they don't fit properly. To be fair top set were perfect at the start but are now feeling loose.
Now when teeth are extracted you already have the denture if it's more than just 1 tooth, at least that was my experience. You are encouraged to put denture in as soon as possible after extraction.