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54 HUNTER ON THE TEETH.
thence gradually smaller to the extremity of the fang ; simple,
where the Tooth has but one root ; and in the same manner
compounded, when the Tooth has two or more fangs.
This Cavity is not cellular, but smooth in its surface it con-
:
tains no marrow, but appears to be filled with blood-vessels, and,
I suppose, nerves, united by a pulpy or cellular substance, (v)
The vessels are branches of the superior and inferior Mamillaries
and the nerves must come from the second and third branches
of the fifth pair.
By injections .we can trace the blood-vessels distinctly through
the whole Cavity of the Tooth ; (w) but I could never trace the
Nerves distinctly even to the beginning of the Cavity, (x)
(v) [The dentinal pulp is that portion of the fetal tooth-papilla which
remains after the development of the dentine. It is connected below with
the periosteum lining the alveolus, passes up the aperture in the fang, and
accurately fills the central cavity of the tooth, being everywhere in
close contact with and adherent to the inner surface of the dentine. It
is a soft red substance, highly vascular, with the exception of a layer on
its surface, and well supplied with nerves. In structure that portion
which contains vessels consists, according to Kolliker, of " an indistinctly
fibrous connective tissue, with very numerous round or elongated nuclei
interspersed." The same authority describes the pulp as being covered
by a delicate structureless membrane, under which is seated "a layer
(ii)2'", 0-03'", to 0-04'" thick, consisting of several rows of cylimlrical or
conical nucleated cells, 0-012"' long, 0-002'" to 0-003'" broad, disposed
perpendicularly upon the surface of the pvdp like a columnar epithelium.
Further inwards, these cells are arranged less regularly, and ai
pass into the vascular tissue of the pulp without well-defined limits by
the medium of shorter and more roundish cells." (1). These cells corre-
spond with those termed by the same author "the formative cells of th<
dentine," and he believes that they furnish materials for any deposition
of dentine on the walls of the cavity which may occur in the adult.]
From three to ten small arteries may be observed entering tin-
pulp of each tooth. By ramifying in the pulp substance, they produce
a loose net-work of capillaries, from which the veins arise. No
lymphatics have been observed in the dentinal pulp. (2)]
(x) According to Kolliker, the nerve supply to each tooth consists of
a principal trunk, 0-03'" to 0"04'" in size, and of six or even more fine
(1) K. 'Hiker's Manual of Human Microscopical Anat.j pp. 299, 300.
(2) Op. cit., p. 300.
54 HUNTER ON THE TEETH.
thence gradually smaller to the extremity of the fang ; simple,
where the Tooth has but one root ; and in the same manner
compounded, when the Tooth has two or more fangs.
This Cavity is not cellular, but smooth in its surface it con-
:
tains no marrow, but appears to be filled with blood-vessels, and,
I suppose, nerves, united by a pulpy or cellular substance, (v)
The vessels are branches of the superior and inferior Mamillaries
and the nerves must come from the second and third branches
of the fifth pair.
By injections .we can trace the blood-vessels distinctly through
the whole Cavity of the Tooth ; (w) but I could never trace the
Nerves distinctly even to the beginning of the Cavity, (x)
(v) [The dentinal pulp is that portion of the fetal tooth-papilla which
remains after the development of the dentine. It is connected below with
the periosteum lining the alveolus, passes up the aperture in the fang, and
accurately fills the central cavity of the tooth, being everywhere in
close contact with and adherent to the inner surface of the dentine. It
is a soft red substance, highly vascular, with the exception of a layer on
its surface, and well supplied with nerves. In structure that portion
which contains vessels consists, according to Kolliker, of " an indistinctly
fibrous connective tissue, with very numerous round or elongated nuclei
interspersed." The same authority describes the pulp as being covered
by a delicate structureless membrane, under which is seated "a layer
(ii)2'", 0-03'", to 0-04'" thick, consisting of several rows of cylimlrical or
conical nucleated cells, 0-012"' long, 0-002'" to 0-003'" broad, disposed
perpendicularly upon the surface of the pvdp like a columnar epithelium.
Further inwards, these cells are arranged less regularly, and ai
pass into the vascular tissue of the pulp without well-defined limits by
the medium of shorter and more roundish cells." (1). These cells corre-
spond with those termed by the same author "the formative cells of th<
dentine," and he believes that they furnish materials for any deposition
of dentine on the walls of the cavity which may occur in the adult.]
From three to ten small arteries may be observed entering tin-
pulp of each tooth. By ramifying in the pulp substance, they produce
a loose net-work of capillaries, from which the veins arise. No
lymphatics have been observed in the dentinal pulp. (2)]
(x) According to Kolliker, the nerve supply to each tooth consists of
a principal trunk, 0-03'" to 0"04'" in size, and of six or even more fine
(1) K. 'Hiker's Manual of Human Microscopical Anat.j pp. 299, 300.
(2) Op. cit., p. 300.
