Table 2 Summary of case reports with C-shaped canals in mandibular first molars
Reference | Age | Gender | No. of canals | Pulp chamber anatomies | Location of the C-shaped canal | Type | Radiological Examination |
|---|---|---|---|---|---|---|---|
Helvacioglu-Yigit (2015) [47] | 20 | Female | 3 | Continuous C-shaped | A mesial lingual canal; Fused mesiobuccal and distal C-shaped canal | C2 | Panoramic radiograph Periapical radiograph |
Wu et al. (2018) [48] Case1 | 28 | Female | 2 | Continuous C-shaped | A mesial lingual canal; Fused mesiobuccal and distal C-shaped canal | C2 | Periapical radiograph CBCT |
Wu et al. (2018) [48] Case2 | 34 | Male | 2 | Three orifices | Buccally deviated II-I C-shaped canal; A separate distolingual canal | Not stated | Periapical radiograph CBCT |
Ravi et al. (2024) [37] | 28 | Male | 4 | Four distinct orifices | Fused mesiolingual, distolingual and distobuccal canals A separate mesiobuccal canal | Not stated | Panoramic radiograph Periapical radiograph CBCT |
Our report | 35 | Male | 4 | Continuous C-shaped | Fused two orifices (cervial) Four separate canals (Middle) Fused Mesiolingual and mesiobuccal canals (apical) | C3 | Periapical radiograph CBCT |
3 | Continuous C-shaped | An oval mesial canal; An elongated, narrow distal canal | C2 | Periapical radiograph CBCT |