PMC10329765_01
A) Preoperative intraoral radiograph; Preoperative CBCT view; B) Frontal view; C) Coronal third axial view; D) Middle third axial view; E) Apical third axial view; F) Working length confirmation radiograph; G) Master cone confirmation radiograph; H) Postoperative intraoral radiograph; I) Six months follow-up radiograph
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F1
Periapical radiograph displayed bifurcated roots in the mesiodistal direction with slight apical radiolucency and periodontal ligament (PDL) widening (Figure 1A). Cone-beam computed tomography (CBCT) using Planmeca ProMax 3D (Planmeca, Helsinki, Finland) was performed to improve assessment and revealed a two-rooted tooth with one orifice and two foramina (Figure 1B-1E). Changzhou, China) and then confirmed with radiography (Figure 1F). Chemo-mechanical cleaning and shaping was performed by crown-down technique with M3 Pro Gold rotary files (United Dental, Sichuan, China), up to size 25/04 for both canals under copious irrigation with 5.25% sodium hypochlorite and normal saline alternately. Canals were dried with paper points (META, Chugbuk, South Korea), and master cone 30/04 (META, Chugbuk, South Korea) fit was checked with a periapical X-ray (Figure 1G). AH-26 sealer (Dentsply, Ballaigues, Switzerland). After the operation, the quality of the filling was evaluated on a periapical radiograph (Figure 1H). At the 6-month follow-up, the tooth was clinically and radiographically asymptomatic (Figure 1I).