(a) Lower molar with divergent roots. (b) The dotted lines show the direction in which the root can be removed if the tooth is divided as suggested in the text.
At times the lower molar teeth are much tilted in such a way that the crown surface stands towards the tongue.—Under such conditions their removal is best carried out with instruments of the pattern shown in [fig. 30], since the handles of forceps of the hawk’s-bill pattern when applied would come in contact with the upper teeth, and thus impede the inward movement which is so necessary for the removal of teeth in this position.
The Temporary Teeth.—For the removal of upper incisors and canines, a small pair of straight forceps of the pattern shown in [fig. 34] should be used. The first upper temporary molars are best removed with a pair of forceps like [fig. 35].
The lower incisors and canines require a small pair of hawk’s-bill forceps similar to the shape shown in [fig. 27]. For the lower temporary molars, a small pair of forceps similar to that illustrated in [fig. 29] should be used.
Fig. 34. Fig. 35.
In removing the temporary teeth, care must be taken not to drive the forceps up too high, for fear of injuring the permanent teeth; this is more especially to be noted in connection with the temporary molars, as the roots of these teeth practically embrace the crowns of the bicuspids. Generally speaking, if a temporary molar fractures in the attempt to remove it, the portion of tooth remaining in the jaw should be left alone unless it can be brought away quite easily.