Legends for figures
Figure 1: A) & B) Preoperative intraoral periapical radiograph of 27, C) Pulp chamber floor of 27 showing the presence of an additional orifice in close approximation relation to the palatal (P) orifice and subsequent gouging in the distobuccal region adjacent to the Mesiobuccal (MB) orifice.
Figure 2: CBCT images of 27. A), B) & C) Axial images in the cervical, middle, and apical region of the tooth, D) Coronal section showing the apical split of roots and early periapical radiolucency in the palatal root (red arrow), E) Sagittal section showing gouging of the floor, F) Apical 3-dimensional image of roots
Figure 3: A ) Immediate postoperative radiograph, B) Postoperative radiograph after 1 year
Figure 4: A) Illustration of the normal location of the Distobuccal (DB) root canal orifice in relation to the Mesiobuccal (MB) and Palatal (P) root canal orifices.M: Mesial, D: Distal, B: Buccal.
B) Illustration of the unusual location of the Distobuccal (DB) root canal orifice in a close approximation of the Palatal (P) root canal orifice. M: Mesial, D: Distal, B: Buccal.