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Class 2 cases.
Eliminating all attempts to a technical description, may be
considered as those cases where the teeth in the lower arch are
distal to normal, hence the condition so frequently found, and
termed "inferior retrusion or post normal."
Class 3 cases are the opposite to the above, where the teeth in
the lower arch instead of keeping in lingual touch with the upper,
the lower teeth occlude in front of the upper; and are commonly
called "under" hung cases, or " Pre-normal."
Unclassified.—These are cases that refuse to allow themselves
to fall into any of the above classifications, and stand alone; one
such, in the Consultant's decision, is under the Clinic treatment
now.
Dento-Facial Angle.—Too much stress is not laid on this.
The avowed object of the Clinic is to obtain in the shortest possible
space of time, a healthy mouth, free from irregularities, and
serviceable for the vears ahead.
The following defects were found in the 143 cases:—
Narrow Arches 16
Labioversions 20
Linguoversions 20
General Crowding 32
Interlocked Bites 2
Suckers—.Lip 3
Finge 2
Thumb
Tongue 1
Open Bite 2
Close Bite 12
Perversions 4
Torsoversions 14
Supra versions 2
Inferior Retrusions 21
Superior Protrusions 1
Impacted teeth 2
Three cases required and obtained Hospital treatment. In m
cases Skiagrams were made.
The cases classified were as follows : —
Class 1 30. Class 2 3. Class 3 10