Page 451 - My FlipBook

FOBMS OF PULP CHAMBERS AND CANALS. 449

distribution of pulp canals. Fig. 419 illustrates a case in which there
was a trifurcation of the palatal root. Other abnormalities of the canals
of upper molars are shown in Figs. 420-425 (Ottolengui ^).

Fig. 420. Fig. 421. Fig. 422.

Fig. 423. Fig. 424. Fig. 425.

Upper molars (Ottolengui).
Zipper Third MoJar.—The three roots of the upper third molar are
frequently compressed together, giving the external appearance of a
Fig. 426.

Q

Upper third molars.

single round conical root. In many instances there will be found but
a single large canal, as in Fig. 426, a. The rule is three canals, as

Fig. 428. Fig. 429.

Lower incisors and canine.
shown in Fig. 426, b, which shows also a section through the buccal
roots. The root is generally curved backward more or less.
1 Methods of Filling Teeth.
29