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914 DISEASES OF THE DENTAL PULP, AND TREATMENT.
tation is rarely realized, as here the irritation is excessive and becomes
a destructive force. In absolute inflammation of the pulp new fornia-

FiG. 481.

o, caries; h, adhering dentine forma- Longitudinal Section through Ca-
tion; c, a free nodule with the con- nine. Secondary dentine the
nection dissolved. result of a clasp (Schlenker).
tion is impossible. Schlenker says of inflammation of the periosteum
followed by abscess that " if in such teeth secondary dentine is found it
must not be accepted as positive that this is the result of inflammation
of the pulp. If the pulp is inflamed, all new for-
Fig. 483.
mations cease in hard tooth-structures."
The same author divides the new formations into
six distinctive sections : 1. Enameloid ; 2. Enamel-
dentoid ; 3. Dentoid ; 4. Dentine-osteoid ; 5. Oste-
oid ; 6. Calcoid. In regard to the former, the
enamel nodule, he says : " At the yearly meeting
of the Central Society of German Dentists held at
Freiburg, 1875, I exhibited two free enamel nod-
ules found in the pulp-tissue, since which time I
have added three others free and two specimens
of adhering enamel formations."
From the enamel-dentoid, or combination of
enamel and dentine, he has two examples. In the
dentine-osteoid the combination of cement and den-
tine takes place. The osteoid, as its name implies,
consists wholly of cement, and the calcoid the cal-
cification, in the connective tissue of the pulp, and
Section ilii..ii;;ii I aiiine,
with the I'ulp: n. entire felt as grains of sand.
pulp; b, partial calcifica-
tion; c, part of the pulp The calcification of the tissue of the pulp into
without nodules (Schlen- nodules is finely represented by an illustration from
ker).
the same author. The symptoms of calcification
are not sufficiently marked to render the diagnosis an easy one ; indeed,
the de(Msion must rest largely on the character of the teeth and the
exclusion of other sources for the neuralgic pains present. The usual