Quote:
> On 14 Jun 2003 18:51:55 GMT, Brian Sandle
>>But Dentist B.D.Ritchie says in "A Child's Natural Dental Health" that he
>>does not believe in brushing or flossing for children under age 7 or
>>thereabouts.
> A very bad idea.
Hi there, I see you posted the article in the 3 groups separately, is that
to get past spam blocking?
I may be offending Eric and Tedd, but there may be some sci.archaeology
readers out there who are interested in learning from the past which
archaeology searches to find out how things have developed to the
later practices whether that be _to_ 20000, 2000, 200 or 20 years ago or
whatever, _from_ the earlier time of however much before.
Thanks for starting to help me along on this.
You take me back to `tooth worms' 5000 years back. I remember Joel writing
of the wriggling which a tooth root does when it is extracted and placed
on a dish. Now perhaps your translation confuses the worms as a `cause' of
decay, to being the organs `susceptible' to the infection and the cause of
pain when infected.
Even today my dentist regards as tooth erosion as rather normal. I am just
wondering how to persuade him to do something before infection gets
through the exposed dentine to the root.
Now let's go back again to:
***********
Newsgroups: sci.archaeology
Subject: Re: arthritis & tooth decay in fossil record
Date: Mon, 18 Dec 2000 11:41:45 +0000
Quote:
>I heard that the human fossil record does not show tooth decay or
>arthritis before ~10k ago. Is this true?
Nope, false. You can use these sorts of flaw to assess the age of the
fossil at death. Of course, when people had a life expectancy of maybe
early twenties then there is not much of an opportunity to get tooth
decay, and without sugar and so on teeth can last quite well.
The tooth decay in early agricultural communities comes about when the
corn is ground on a granite stone. Bits of granite enter the bread and
abrade the teeth. Some of these communities are older than 10k years
ago, but it is around then that these types of lifestyle become
viable, along with a longer life expectancy, so in a sense there is a
clear change in the record. Not quite as absolute as "none prior",
though.
*************
Now though, WubbaBubba, you write of:
Quote:
> Pyramid at Saqarra (2600 B.C). From the skulls of early Egyptians, it
> is apparent that dentists like Hesi-Re primarily removed problem teeth
> or drilled holes in the jawbones as a means of releasing pressure
> caused by abscessed teeth.
there will also be the holes left in bones as abscesses erode the bone and
release the pressure themselves. I suppose the holes look different.
So now we have several factors to tabulate:
presence and extent of wear of teeth and any relation to naturally
occurring or operative bone holes.
Martyn refers to the increase in lifespan as a confusing factor, and there
is a further one. The archaeological records also show the first presence
of A {*filter*} group around that time. D'Adamo has said that. I hypothesize
that the reduced stomach acid production of the A {*filter*} group people
allows a longer time for the salivary enzymes to work on the starch in
grains. Stomach acid strength drops when cooking.net">food is swallowed. After a
duration of hours it rises back to normal. More slowly for the A group
people, and faster for the O group ones. Stomach acid neutralises the
salivary enzymes. But D'Adamo has other reasons why group A {*filter*} appeared
and group A people survived better in the fast growing populations
necessitating agriculture. The group A antigens attacked some community
disease - flu I think, included.
So we need to examine Martyn's claim for whether the extended life were
due to {*filter*} group A appearing. Well we should correlate jaw and
maxillary bone with age of subject, {*filter*} group as well as historical age.
Partial correlation would tend to show a factor is not causative if when
it is partialled out the other correlation of the relationship does not
change.
So then we would better ascertain relation between tooth abrasion and
decay.
Some of the abrasion will continue to wear away dentine will it not, so
infection won't go in, but some won't.
Going back to Martyn again, another point is that it may not have only
been bits of stone in the grain flour from the grinding, it may also have
been using the teeth to grind the grain which was causing wear.
Now the question is that if corrosive fruit acids were being consumed
before grain consumption started why was there not evidence of tooth decay
from it?
Quote:
>>He believes the tooth has a several-layer integument which protects the
>>tooth from sugar acids.
> He believes incorrectly.
>>Abrasive toothpaste removes the lower layers
>>of the integument.
> You cannot remove what is not there.
>>So then salivary minerals, including magnesium and
>>fluoride, are no longer synthesised to enamel repair compounds.
> What cells carry out this clever figment.
> WoW humans can synthesize
> Flourine and Magnesium, alert the media !
Enamel repair compounds are synthesised from fluorine and magnesium and
calcium phosphate in a complicated process in the layers of _mature_
plaque which harbour Veillonella and other bacteria, and in which the acid
producing Strep mutans is kept to about 1%.
Quote:
> The basic building block of tooth structure is hydroxyapatite
> Fluorapatite is formed when fluoride is present.
> Here are a couple of0 basic primers for you:
> http://www.***.com/ ,,239997_106905,00.html
> http://www.***.com/
Claiming that enamel cannot be repaired. Therefore why does tooth paste
with monofluorophosphate and calcium phosphate calm my teeth to the pain
of apple chewing in a way which lasts quite well?
Quote:
>>It is the
>>lower layers of the integumetn which do that. If the integument is abraded
>>off a new one forms which holds acids near the enamel surface.
> This structure does not exist except in Ritchie's mind.
It does not exist for the first few weeks after abrasive brushing.
Quote:
>>And brushing and flossing can also damage the gums, allowing infection in.
> Not if done correctly and with a soft brush. In fact lack of brushing
> leads to periodontal (gum) disease.
Lack of removing
cooking.net">food from gums. Chewing celery could help, or carrot,
maybe even the acid apple if the protective plaque is present.
Quote:
>>So we might understand how humans kept their teeth in ages past. What
>>archaeological evidence is there of tooth cleaning?
> Plenty.
> How about the Ancient Egyptians?
> You know, Pharohs and Pyramids?
> Denal instruments and evidence of crude dental treatment
> an prostheses, and personal hygiene items have been found.
What ones?
I learnt at primary school that the Chinese used wooden sticks rarther
than abrasion.
Quote:
> We even know the name of one ancient egyptian 'Dentist to the Pharohs'
> Dentistry goes back much further than the Middle Ages. The
> first known dentist was Hesi-Re, an Egyptian who lived during the
> reign of Zoser, the pharaoh who ordered the building of the great Step
> Pyramid at Saqarra (2600 B.C). From the skulls of early Egyptians, it
> is apparent that dentists like Hesi-Re primarily removed problem teeth
> or drilled holes in the jawbones as a means of releasing pressure
> caused by abscessed teeth.
> From:
> http://www.***.com/ :xMIFmSihMSoJ:www.smilecalifornia...
> Also Ancient Greek, Roman, and Chinese evidence has been found.
> http://www.***.com/
> The earliest recorded reference to {*filter*}disease is from a Sumerian
> text (circa 5,000 B.C.) that describes "tooth worms" as a cause of
> dental decay.
> Old enough archaeological evidence for you ?
The age in itself does not worry me, but relation of tooth abrasion to
disease and any understanding it brings for today.