I'm no dentist, but I do have a few thoughts on the subject...
First, it's my impression is that dentistry in the future will be very limited and become a bad field like real-estate agent.
On the positive side, some dentistry will always be done and be available.
* Getting a drill running doesn't require a great deal of power or materials.
* Alternative materials for fillings are fairly abundant.
* Teeth can be pulled easily.
* And there will always be some dentists because dental pain is often sufficient to encourage even the poorest person to try to get something done.
* As people eat less refined sugars, they will have fewer dental problems.
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Some dental work is easy to do yourself.
* Floss, toothbrushes and toothpaste are simple and cheap.
* Vitamin C
"
The inmates' main problem was bleeding gums, a result of vitamin deficiency and the complete absence of toothbrushes and dentifrice. Dabbing the gums with iodine only offered temporary relief."
The Dentist of Auschwitz
http://www.nizkor.org/features/dentist/chapter-14.html
* Xylitol is an "alcohol sugar" that humans can digest but kills plaque bacteria. It comes in chewing gums and as a granulated sugar. Xylitol is a very useful thing to know about. Asking your kid to swish with some special sugar water might be easier then getting him to use Listerine. And Xylitol gum is cheap.
* Emergency filling kits. Stores like walmart sell good quality temporary dental filling materials specifically for emergency repairs. Temparin is a good brand.
I've patched my own fallen out filling that way. And the material is great for reattaching a bridge or a crown. One time my wifes bridge fell out and was broken in two. I repaired the break with some stainless steel, acrylic glue and polyester string, sort of like a fiberglass patch. Then I re-adhered the bridge to her teeth with temporary dental repair material from walmart. (Crowns are easier to fix...) This fix lasted a few months until she could get it repaired. Amusingly, flying to Ukraine and getting it repaired there was cheaper then getting it repaired in the US. And so she had time to make a trip to Ukraine and get a new better bridge...
* Dentists have used resins (like epoxy) or silicone as alternative filling materials such as in WW2. If you had to, you probably could too.
"
I also filled the cavities with silicone or phosphate cement."
The Dentist of Auschwitz
http://www.nizkor.org/features/dentist/chapter-14.html
* Regarding pain killer, they can be gotten in most time periods and places. Though I have had dental work done without pain killers, it's survivable...
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Dentistry today
This is a good article, presently dentists are trying to
fast sell patients on root canals because less people are having them done...
Root Canal, an Economic Indicator?
"But I was never offered same day service on a root canal before. Two people in a row? Talk about fast service and I wasn’t even ordering a hamburger!...
Are people starting to tighten their belts? $900 dollars for a root canal could definitely make one pause for thought..."
Vince Dorgan said...
"When I hear root canal, I say pull it. Experience has taught me that the affected tooth comes out anyway a couple of years later. Usually it shatters into a million pieces at an inconvenient time and place."
http://greatdepression2006.blogspot.com ... cator.html
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Historically...
These links are interesting, historically when depressions hit dentists lose work...
The Great Depression and the New Deal
"...even dentists could not find work."
http://www.orange.k12.oh.us:16080/teach ... wdeal.html
Farm Life During the Great Depression
...could not afford to go to the dentist, leaving their teeth very unhealthy.