Page 590 - My FlipBook

588 EXTRACTION OF TEETH.

FiiT. 524 is taken fVom several transverse sections of a lower jaw.
The bone is not (juite nornuil, as several teeth were extracted beibre
death, the loss having caused changes in the character of the bone.
Some of the sections show but oue canal while in others there are many,
requiring close observation to tell in which the nerves and vessels have
passed. At point d it will l>e seen that the mot of the second molar
penetrates the true nerve canal.

Fig. 525.

Fig. 525 is taken from the inner side of the right half of a lower
jaw. The second molar has been broken otf, the roots still remaining
Fig. 526.

in position. The points of the roots of the third molar pass out through
the inner wall a considerable distance below the mvlo-hvoid ridge. A