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Fig. 4 | BMC Oral Health

Fig. 4

From: A micro–computed tomographic analysis of the root canal systems in the permanent mandibular incisors in a Chinese population

Fig. 4

Odontometric measurement results of the root canals in mandibular incisors. A Measurement results of long diameters (D) at different root levels; B measurement results of short diameters (d) at different root levels; C D/d ratio at different root levels; D measurement results of root canal curvatures of double-canaled mandibular incisors at the proximal view. Single means the canal display a single curvature, and as the canal display a “s” -shaped double curvatures, the primary and secondary curvature were measured respectively. Error bar is SEM, *p < 0.05, **p < 0.01

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