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Fig. 3 | BMC Oral Health

Fig. 3

From: Prevalence of complex root canal morphology in the mandibular first and second premolars in Thai population: CBCT analysis

Fig. 3

AC CBCT images of a mandibular first premolar with three root canals. A Sagittal view of a 2-rooted mandibular first premolar with mesial and distal roots. B Coronal views of a mesial root with 1 root canal and distal root with 1 root canal extending from the pulp chamber and dividing into 2 root canals at the middle 1/3 level. M indicates mesial root and D indicates distal root. C Axial view of mesial, distobuccal, and distolingual root canals. DF CBCT images of a mandibular first premolar with two root canals. D Sagittal view of a single-rooted mandibular first premolar whose root canal initiates at the CEJ and disappears in the apical third level (fast break). E Coronal view of 1 root canal extending from the pulp chamber and dividing into 2 root canals at the middle 1/3 level. F Axial view of 2 root canals at the middle 1/3 level. Arrows indicate mandibular first premolars

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