Manchester Democrat. [volume] (Manchester, Iowa) 1875-1930, 1909-11-10
until, with unlimited food and time
and room to grow in. 1t comes out at
last perfect mother bee"
MODERN pENTIsTRY,.
How Gold lnlays Are Made and Pu


How Gold lnlays Are Made and Put
Into the Teeth.
The modern dentist now makes gold
inlays as well as inlays Of porcelain.
In making an ordinary gold filing
the cavity in the tooth is made
larger within than at its opening, the
walls thus contracting helping to hold
the filling In. The cavity for a gold
inlay srnust of course be at least as
large at the opening as at any in.
terror point, for tho inlay is in a
solid block.
There may be various reasons for
putting into a tooth gold inlay in
stead of a filling malleted in. For
one reason 1t may be that the walls
OF the tooth are too frail to stand
the malleting without danger Of
breaking, or it may be that the gold
inlay is to go into back, grinding
tooth, where malleted filling would
not serve the purpose An ordinary
gold filling such as is malleted in lie
made of pure gold; If 1t were 9th.
erwlse 1t could not he worked; gold
inlay can be alleged to make it of
degree of hardness SUFFICIENT to
Withstand use.
Porcelain inlays are commonly set
in front teeth, where they do not
show as a gold filling would. The
porcelain powders Of which such In.
Lays are made are produced in a
practically endless variety OF shades,
which can be further varied by com.
bination.
It is possible to make porcelain
| inlay that will match the surrounding
tooth 30 perfectly that except upon
the closest inspection 1t is impossi.
bic to tell whore the tooth leaves on
and inlay begins. Porcelain inlays.
which are moulded into shape from
the plastic material and then baked,
may bbe set in grinding teeth, but
this is not commonly done. A porce.
lain inlay that might not break II
stepped on might break in GRIND.
ing tooth in use.
A perfect amalgam filling will wear
as well and as long as the tooth In
which 1t Is set. but amalgam discol.
ors in time, and there are persons
who will not have an amalgam fill.
ing even in back tooth, out Of
sight. For these people for grind.
ing tooth gold inlays are made.
In whatever sort OF tooth the gold
inlay is to be placed the cavity
when drilled out is furrowed down
Its sides within with little grooves,
into which corresponding mouldings
on the inlay will fit, this to hold the
inlay more securely In place and the
better to enable it to withstand pres.
sure applied to 1t from various direc.
tons. and with the cavity finished a
form or pattern is taken of it in wax.
into one end of this little form or
pattern In wax is thrust a delicate
wire, by which 1t con be handled
without handling the form itself, and
then this pattern is set in a tiny
flask. and around 1t, as In foundry
the moulders pack sand around pat.
terms In making moulds in bigger
TASKS, plaster is packed.
When this tiny mould containing
the wax pattern for the inlay has
hardened the wire is drawn out OF
the pattern and the wax is melted
out OF the mould, and then there is
the mould ready for the casting,
which is done by the aid of various
special appliances made for the pur.
pose. Then you break the little
plaster mould and there. released,
you have the gold inlay. Z.
1t Is set into place with cement,
which after an hour or two in which
to harden holds the inlay firmly and
securely anchored. In due time later
the dentist will grind 1t down around
to make it perfectly flush with the
surrounding tooth surface and polish
it.-New York Sun.