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CALCIFICATIONS OF THE DENTAL PULF. 879
the cylinders are attached to them by their ends. In picking these apart
in the field of the microscope this is still more observable, and then it
is found that each cylinder is firmly attached at either end to a little
bundle of fibrous material
Fig. 475.
and it is hard to escape the
conviction that these fibres
are being infiltrated with
lime salts. A pulp containing
these calcifications will be dis-
tinctly stiffened, and may be
bent about and will retain the
curve given it like lead wire.
Indeed, this is uniformly the
condition of those pulps that
seem stiff wdien removed by
the broach.
Fig. 476 represents an
extreme degree of this form
of calcification. Here is a
more curious phenomenon
still. The cylinders have
Cylindrical Calcification of the Pulp. This has hefn
grown and run together, but spread with needles, ami the filires that lay across tlie
general trend show how the calcifications are attached
instead of coalescing end to
at the end to the fibres. It will also be noticed that the
end, forming rods, as might tissue has lost its normal forms and degenerated into
an irregular fibrous mass (.X lOU).
have been expected, they are
irregularly jointed, and in the effort to pick these apart with needles it is
found that these joints are held together quite firmly by fibres passing
from the one to the other. In this condition the root portion of the pulp
becomes very stiff; yet it may still be bent, and will retain its bent posi-
tion like annealed wire. I do not think that this form of calcification
ever runs together into a solid mass. It is evidently a distinct form, and
dependent on a peculiar condition of the tissue of the pulp. I have seen
Fig. 476.
Cylindrical Calcification, more advanced than in Figs. 47-1 and 475. Instead of running together and
forming a solid mass, they are irregularly jointed (X 100).
nothing in other parts of the body with which to compare it. AYe indeed
find long, flattened calcifications in the arteries, but I have seen none with
the distinctly jointed appearance shown in Fig. 476. What forces are in
operation to produce these peculiar forms I am unable to say. I am
CALCIFICATIONS OF THE DENTAL PULF. 879
the cylinders are attached to them by their ends. In picking these apart
in the field of the microscope this is still more observable, and then it
is found that each cylinder is firmly attached at either end to a little
bundle of fibrous material
Fig. 475.
and it is hard to escape the
conviction that these fibres
are being infiltrated with
lime salts. A pulp containing
these calcifications will be dis-
tinctly stiffened, and may be
bent about and will retain the
curve given it like lead wire.
Indeed, this is uniformly the
condition of those pulps that
seem stiff wdien removed by
the broach.
Fig. 476 represents an
extreme degree of this form
of calcification. Here is a
more curious phenomenon
still. The cylinders have
Cylindrical Calcification of the Pulp. This has hefn
grown and run together, but spread with needles, ami the filires that lay across tlie
general trend show how the calcifications are attached
instead of coalescing end to
at the end to the fibres. It will also be noticed that the
end, forming rods, as might tissue has lost its normal forms and degenerated into
an irregular fibrous mass (.X lOU).
have been expected, they are
irregularly jointed, and in the effort to pick these apart with needles it is
found that these joints are held together quite firmly by fibres passing
from the one to the other. In this condition the root portion of the pulp
becomes very stiff; yet it may still be bent, and will retain its bent posi-
tion like annealed wire. I do not think that this form of calcification
ever runs together into a solid mass. It is evidently a distinct form, and
dependent on a peculiar condition of the tissue of the pulp. I have seen
Fig. 476.
Cylindrical Calcification, more advanced than in Figs. 47-1 and 475. Instead of running together and
forming a solid mass, they are irregularly jointed (X 100).
nothing in other parts of the body with which to compare it. AYe indeed
find long, flattened calcifications in the arteries, but I have seen none with
the distinctly jointed appearance shown in Fig. 476. What forces are in
operation to produce these peculiar forms I am unable to say. I am
