18 August 2020 : Clinical Research
Root Anatomy and Root Canal Morphology of Maxillary Second Permanent Molars in a Chongqing Population: A Cone-Beam Computed Tomography Study
Yu Xia123CDEF, Xin Qiao123BC, Ya-jing Huang123CD, Yue-heng Li123AE*, Zhi Zhou123AGDOI: 10.12659/MSM.922794
Med Sci Monit 2020; 26:e922794
Figure 2 Types of canal configuration in mesiobuccal roots of permanent second molars of the upper jaw and horizontal distances from the buccal root apices to the surface of buccal cortical bone plate. (A) Type I. (B) Type II (B1, coronal 1/3; B2, middle 1/3; B3, apical 1/3). (C) Type III (C1, coronal 1/3; C2, middle 1/3; C3, apical 1/3). (D) Type IV (D1, coronal 1/3; D2, middle 1/3; D3, apical 1/3). (E) Horizontal distances from single buccal root (E1), mesiobuccal root (E2), and distobuccal root (E3) apices to the surface of the buccal cortical bone plate.