The Lancaster gazette. [volume] (Lancaster, Ohio) 1863-1886, 1863-06-18
Anatomy and Physiology of the Teeth.

their base, animal matter, and two acids,
the corbonic and the phosphoric. The
outer shell or covering Of the crown Of
the tooth, is called enamel. ltisah hard,
vtreous substance, analogous to flint,
and possesses feeble grade Of vitality |
The body Of the tooth and its fang is |
the bony substance, or dentinc. 1t
possesses more vitality than cnamal,
and is the seat of carries OF decay. The
enamel does no: decay, but simply crum-
blcs away as the bone decays Or leaves
! it.
Bones do not contain red blood, or
posses scnsibility in a healthy state. In
an nAamed condition they have both,
Every tooth has an artery, a vein and a
nerve passing like hairs through the
point Of the fang, which supplies them
with Il circulation and vitality 32teeth
is the adult set; and 90 thcmilk or child's
set. The first 20 arc all shed but the
large molars, or jaw teeth Of the adult,
which commence to appear about the
eighth year of life, arc never shed. The
front teeth have but single fang. The
t upper iaw-tceth have three fangs; the
lower ones but two, as general rule.
The wisdom teeth, 2 in each jaw, make
their appearance from the eighteenth
! to the twenty fifth year oflitc. The
sockets or alveolar processes surround
; ing the teeth are only appendages Of
. the Jaws, and are entirely removed by
. absorption after the teeth have been
extracted
Extracting tooth with the instrumc-
y y nts that modern improvements have
d introduced, when in the hands of an
n educated Dentist, is attended with no
:. risk Of accident, and is usually accom-.
}. plshcd with little pain, compared with
# # former methods The difficulties to be
overcome, or the reason why some
r. teeth are harder to extract that others
I, should be understood, The length and
$ curvature, or straightncss Of the fangs
\. together with the firmncs or sot(ness O
ID the bones makes all the difference
I'd The breaking of Il tooth in attempting
e to extract it, is II causualty that may
). happen in the hands of the most eXper
X fenced and careful operator. WhS'
r. the fangs are deeply and firmly tiXct
Z in the laws, while the crown, or tha
IF IF part Of the tooth that stands outside o
Of the socket is brittle from decay, grea
nd caution and tirmness are required t
i, IT, prevent this occurrence. Yet ever,
nd qualified Dentists is provided with tn
hc IhM methods of success.
to to The teeth are supplied with nerve
y" ~. which are given off from parent trunk
m n, ofnervcs going from the brain to othe
eat parts oftho body. These branches ar
"Ia ID given Oft Just below the ear This int
ol- mate connection of the teeth with tn
ND nervous system brings them in dirc'
"a" "a" sympathy with the whole body, and O.
the plains how morbid condition Of thcS
,ms organs may disturb other and remo
op. parts of the system; and how the
op. health may contribute to the gener
IT. health,
,dy Tho use of choroform and ether, f'
M tho purpose of procuring state OF Il
ion scnsibility while the teeth are beir
extracted, is to be entered upon Wi
and great caution, and should always
We done, when done at ALL under the 9
%S s"S rcction of the family physician. III
The The frequent fatal causalties that have 0
Wis, Cured from itsuse renders this cauh'
necessary; and the responsibility
lcct those who use it is very great The
,Hr, riIl, are some constitutions that can bear
res. oA,oots sofoly and others that cannot
lect V''o''o 0"'N'S ~" sr,Dmr a cnInI,D
- 4.. ... SCOl L ChlIiTIh.