Figure 4 | International Journal of Oral Science

Figure 4

From: Incidence of C-shaped root canal systems in mandibular second molars in the native Chinese population by analysis of clinical methods

Figure 4

The X-rays of preoperation and postoperation. Type I: (a–d) the X-rays of preoperation; (e–h) the X-rays of postoperation, they belonged to C1, C2, C3a and C3b. Type II: (i–l) the X-rays of preoperation; (m–p) the X-rays of postoperation, they belonged to C1, C2, C3a and C3b. Type III: (q–t) the X-rays of preoperation; (u–x) the X-rays of postoperation, they belonged to C1, C2, C3a and C3b.

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