The two root canals, root canal diverge and root canalbranch et al have considerable incidence. Besides, mesial-distal root canal walls of mandibular incisor teeth are thin.
下颌切牙中，双根管、根管分支和根管分歧都有一定的发生率。
2
A blindly ending branch of the alimentary canal or other organ.
消化道或其他器官分支的盲端。
3
This paper calculates the design flow of the sublateral canals of the typical branchcanal, and expounds the design thought of the cross-section of the irrigation canal.