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This clinical study was designed to compare cold pulp testing (CPT), heat pulp testing (HPT) and electric pulp test (EPT) with pulse oximetry (PO), flowmetry (FM) and thermometry (TM) in terms of sensitivity and specificity. Twenty premolar teeth in need of root canal treatment were included in the study. Pulp sensibility tests (CPT, HPT and EPT) along with vitality tests (PO, FM and TM) were performed. As the gold standard, the teeth were endodontically treated and pulp vitality was determined by direct visual observation. Sensitivity, specificity and accuracy values for each test were as follows: HPT 1,

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Information regarding the canal anatomy especially in complex cases such as C‐shaped canals is essential for a successful treatment. In this study, five different methods for identification of C‐shaped canal configuration were compared. 108 extracted mandibular molars with fused roots were studied. Radiographic evaluation was carried out using periapical radiography and CBCT. After access cavity preparation, all specimens were evaluated by direct visual examination and then under dental operating microscope. Finally, the actual anatomy of each sample was determined by preparing horizontal cross sections of the roots (1 mm thick) and examining them under stereomicroscope as the gold standard. Among the techniques used, high‐resolution CBCT manifested the highest accuracy, whereas periapical radiography had the lowest. All approaches can be useful in reaching a correct diagnosis. CBCT, especially the low‐resolution modality, is an effective technique in the diagnosis of C‐shaped anatomy.