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288 THIRD PERIOD—MODERN TIMES

two days a little more, continuing thus until it is properly compressed
and fitted in, always provided, of course, that the pain does not increase.
The sensitive parts of the tooth become thus more easily used to the press-
ure of the lead, and the pain is in this manner avoided or moderated."^

Fig. 82

Three instruments for plugging teeth. The two small figures represent silver plates
for straightening teeth (Fauchard).
The author also makes the remark' that sometimes, in scraping a carious
cavity, "it is not possible to avoid uncovering and touching the nerve
with the instruments; one becomes aware of this by the pain caused, and
better still by a little blood issuing from the dental vessels." In such

Vol p. 78. ^ Ibid.