Page 60 - My FlipBook
P. 60
METHODS OF FILLING TEETH.
46
which I am now about to use is simply unanswerable. The tooth
being filled, and the matrix removed, it is certainly true that any pol-
done with or must remove a
ishing sand-paper file portion of the tooth,
however little, and thus produce a permanent space. I have refilled
teeth because this had been done. But it may be contended that it
between the teeth when a matrix has been
is not necessary to polish
used, since the gold packed against the matrix must be already
smooth. Let us consider this. I have contended that all fillings,
and those in
especially approximal surfaces, should be made as smooth
as a mirror. To produce such a surface by simply packing gold, it
follows that the surface which the is should be as
against gold packed
smooth as glass. This is not true of any matrix, but can this be
done? I presume that few men would claim more skill than that
which was possessed by Dr. Marshall H. Webb. Several years ago
I had the honor of taking part in a friendly contest with him and
several others, to test various methods of inserting gold. We used
FIG. 61. FIG. 62.
different kinds of mallets, and filled glass tubes set in wood, these being
held in place with cement. Here we had practically, glass matrices.
After the fillings were made they were tested in various ways. To
determine the adaptation to the walls (glass) they were placed in an
aniline dye. All of them leaked badly. They were then removed from
the tubes and examined with a All of them were
magnifying glass.
badly pitted, the pits showing plainly even to the naked eye. Thus it
follows that several Dr. Webb the number, failed
gentlemen, among
to make gold adapt itself to a smooth surface. Therefore they could
not pack gold against the smooth surface of a matrix, so that upon
the removal of the matrix the gold would be polished. Who will
claim to do in such a case what Dr. Webb could not ? It may be
asked, If these fillings leaked, why do not fillings in teeth leak ? The
answer is that in the tooth the gold is packed against a rough surface,
which by offering resistance makes it possible to obtain a sufficiently
accurate adaptation.
It will be claimed that a matrix may be made of a material which
will yield, so that under the force of the mallet the gold will bulge be-
yond the proper contour, and may then be polished. This is true of
the upper two-thirds, but is not true of the gingival margin. There
is but one way to produce a perfect approximal filling ; that is, to ob-
46
which I am now about to use is simply unanswerable. The tooth
being filled, and the matrix removed, it is certainly true that any pol-
done with or must remove a
ishing sand-paper file portion of the tooth,
however little, and thus produce a permanent space. I have refilled
teeth because this had been done. But it may be contended that it
between the teeth when a matrix has been
is not necessary to polish
used, since the gold packed against the matrix must be already
smooth. Let us consider this. I have contended that all fillings,
and those in
especially approximal surfaces, should be made as smooth
as a mirror. To produce such a surface by simply packing gold, it
follows that the surface which the is should be as
against gold packed
smooth as glass. This is not true of any matrix, but can this be
done? I presume that few men would claim more skill than that
which was possessed by Dr. Marshall H. Webb. Several years ago
I had the honor of taking part in a friendly contest with him and
several others, to test various methods of inserting gold. We used
FIG. 61. FIG. 62.
different kinds of mallets, and filled glass tubes set in wood, these being
held in place with cement. Here we had practically, glass matrices.
After the fillings were made they were tested in various ways. To
determine the adaptation to the walls (glass) they were placed in an
aniline dye. All of them leaked badly. They were then removed from
the tubes and examined with a All of them were
magnifying glass.
badly pitted, the pits showing plainly even to the naked eye. Thus it
follows that several Dr. Webb the number, failed
gentlemen, among
to make gold adapt itself to a smooth surface. Therefore they could
not pack gold against the smooth surface of a matrix, so that upon
the removal of the matrix the gold would be polished. Who will
claim to do in such a case what Dr. Webb could not ? It may be
asked, If these fillings leaked, why do not fillings in teeth leak ? The
answer is that in the tooth the gold is packed against a rough surface,
which by offering resistance makes it possible to obtain a sufficiently
accurate adaptation.
It will be claimed that a matrix may be made of a material which
will yield, so that under the force of the mallet the gold will bulge be-
yond the proper contour, and may then be polished. This is true of
the upper two-thirds, but is not true of the gingival margin. There
is but one way to produce a perfect approximal filling ; that is, to ob-
