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THE LOWER TEETH. 609

THE THIRD MOLAR.
In these teeth the roots may vary so much in number and shape
that there can hardly be said to be a typical third molar. Fig. 514
shows what might be called a normal third molar, but these are only
found in well-developed jaws, M'here the teeth are not so large as to
cause crowding. They vary in character from the one shown in Fig.
Fig. 548.

Showing position for extracting lower teetli of the right side.

514 to the two shown in the right and left jaws represented in Figs.
5-30 and 531. Figs. 526, 527, 528 and 529 show other forms and posi-
tions of the third molar. There are also third molars having three,
four, or five roots, o. Fig. 534, shows another form of the third molar;
b, c, d, e, and / show where the third molar has united with the second
molar; g and h illustrate three molars united; j, k, I, m, n, o, and jj show
variations of roots. The positions these teeth occupy may vary in all
degrees from that shown in Fig. 514 to those shown in Figs. 525-531.
Where the third molar is in the position shown in Fig. 514 and there
are no other complications, its extraction is easy. The tooth is removed
by placing either the special lower molar forceps shown in Fig. 498 or
the forceps shown in Figs. 488 and 489 in position, and using the out-
and-in motion with a slight raising of handles. If 488 be used the
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