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CORRECTION OF DENTAL IRKiaiULARITIES. 149
taiiiing wwc uvdy be soldered lu the molar bands, tji" llie
bands may ba\e tubes soldered to tbeir imccal surfaces and
tbe wire, threaded at the extremities, passed through these
and retained l)y means of nuts operating upon them. In
either case the retaining wire should have short gold clips
attached to it in front to engage with the cutting edges of
at least two of the incisor teeth.
\Mien it is desired to avoid having a retaining wire pass
Fig. ICQ.

Day Appliance.
entirely around the front of the arch, a rubber retaining
plate may be made with a gold T passing between the cen-
trals and long enough to rest upon all four of the incisors.
Holding these teeth firmly in place will also keep the cuspids
in line through lateral pressure.
This same treatment with some modifications is show^i in
Fig. no taken from Dr. Angle's practice. The dotted line
shows the relation of the lower teeth. The arch is held in
place by the anchor bands D, upon the first molars as in
the former case. In order to widen the arch in the region
of the cuspids and bicuspids, at the same time the incisors