Page 214 - My FlipBook

198 THE TREATMENT OF TEETH
extent, and to even excuse one for unduly straining
them.
Infinite care and the closest attention to detail
are demanded of the inlay worker if he desires to
accomplish good results. No one who has not the
capacity for " taking pains " can hope for success in
this work.
Harvard cement is generally preferred for setting
inlays. This cement can be mixed somewhat
thicker than many other cements without inter-
fering with the accurate placing of the inlay in the
cavity. The consistency to which the cement should
be mixed can only be determined by experience. If
too thin it will be too weak ; if too thick the inlay
cannot be pressed into exact position. In many
cases the inlay will be found to " spring back " after
it is pressed to place. This must be looked for,
and, if necessary—as it usually is — gentle pressure
must be applied by means of a suitably trimmed
stick of orange wood or hickory, until the cement
has lost its elasticity. From three to five minutes
is usually sufficient for this. A piece of linen tape
is very useful for accurately pressing an inlay to
place, and at the same time wiping the surplus
cement from the margins. In some cases the inlay
may be securely tied in place by wrapping floss
silk several times round the tooth. In many