Size of Follicular Sac
The size of the follicle around the impacted tooth can help determine the difficulty of the extraction. If the follicular sac is wide (almost cystic in size), much less bone must be removed, which makes the tooth easier to extract
(Fig. 9-34). (Yo ung patients are more likely to have. large follicles, which is another factor that makes extractions easier in younger patients.) However, if the follicular space around the crown of the tooth is narrow or nonexistent,
the surgeon m ust create space around the entire crown, which increases both the difficulty of the procedure and the time required to remove the tooth. The surgeon must carefully examine the follicle size when determining the difficulty of an extraction.