case_images: PMC10883750_01
case_images: Periapical radiographs and microscopic photographs were taken during the retreatment procedures of the mandibular second molar, which has a C-shaped root canal configuration.. (A) A preoperative periapical radiograph reveals substandard quality in the previous root canal treatment of tooth #37, along with a radiolucent area surrounding its apex (red arrow). The single conical root (yellow arrow) suggests a C-shaped root canal configuration in tooth #37. (B) A microscopic image displays the partial chipping of the porcelain crown on tooth #37, revealing its metal base. (C) Another microscopic image illustrates the exposed pulp chamber floor of tooth #37, with remnants of gutta-percha present in the chamber. (D) The gutta-percha residues are meticulously removed using a #20/.02 Micro-Debrider (Dentsply Maillefer, Ballaigues, Switzerland). (E) A microscopic view highlights the mesial (M) and distal (D) canal orifices of tooth #37, connected by an isthmus (indicated by a red arrow). (F) A subsequent microscopic image shows the C-shaped root canal of tooth #37, now filled with iRoot SP bioceramic sealer (Innovative Bioceramix, Vancouver, Canada). (G) Master gutta-percha cones are carefully inserted into the mesial and distal canals. (H) A microscopic photograph captures the pulp chamber floor post-completion of the root canal filling. (I) The post-obturation periapical radiograph demonstrates the well-filled C-shaped root canal system in tooth #37, using gutta-percha and bioceramic sealer.
case_images: cureus-0016-00000052812-i01.jpg
case_images: PMC10883750_01_cureus-0016-00000052812-i01.jpg
case_images: FIG1
case_images: A periapical radiograph revealed poor quality in the previous root canal treatment and a radiolucent area around the apex (Figure 1A), suggesting a C-shaped root canal system. The porcelain crown's marginal seal was acceptable, but it had partially chipped, exposing the metal base (Figure 1B). Germany). Gutta-percha remnants were found in the pulp chamber (Figure 1C) and removed with a #20/.02 Micro-Debrider (Dentsply Maillefer, Ballaigues, Switzerland) (Figure 1D). The C-shaped canal configuration was evident (Figure 1E). The iRoot SP bioceramic sealer (Innovative Bioceramix, Vancouver, Canada) was then injected into the upper section of the C-shaped root canal system (Figure 1F). The gutta-percha cones were lightly coated with the sealer before insertion into the canal (Figure 1G). These cones were trimmed at the level of the root canal orifice using a heat carrier tip from the Elements Obturation Unit (SybronEndo, Orange, USA) and compacted with a Buchanan plugger (SybronEndo) (Figure 1H). A periapical radiograph was taken to assess the root canal filling, showing a well-obturated C-shaped canal system (Figure 1I).