| Author  | 
        Year  | 
        Sample  | 
        Study  | 
        Findings    and conclusion | 
      
      
        | JojoKottoor et al. [16] | 
        2010 | 
        Case report | 
        Maxillary First Molar with Seven Root    Canals Diagnosed with Cone-Beam Computed Tomography Scanning | 
        Unusual morphology was confirmed with    the help of cone beam computerized tomography (CBCT) scans | 
      
      
        | Zheng et al. [17] | 
        2011 | 
        608 teeth | 
        Evaluation of the anatomical features    of C-shaped 
          canal systems in Chinese mandibular    second molars by 
          cone-beam computed tomography (CBCT). | 
        CBCT is a clinically useful tool in    the assessment of additional distolingual     root and “C” shaped canals | 
      
      
        | Zhang et al. [18] | 
        2011 | 
        389 teeth | 
        Use of cone beam computed tomography    to evaluate root and canal morphology of mandibular molars in Chinese  individuals | 
        CBCT is    an effective tool for the detection of additional distolingual root and C-shaped root/canals, and it is    a valuable aid for dentists providing root canal treatment.  | 
      
      
        | Mathrene et al. [19] | 
        2008 | 
        72 extracted teeth | 
        Comparison of CBCT and radiography in    identifying the canal anatomy | 
        CBCT identified more canals which were    missed by radiographs | 
      
      
        | Tomoatsu Kaneko [20] | 
        2011 | 
        Case report | 
        Non-surgical endodontic treatment of    dens invaginatus with the aid of (CBCT). | 
        CBCT greatly helped the decision of    avoiding further intervention that could have been difficult to negotiate. | 
      
      
        | Abella et al. [21] | 
        2011 | 
        Case report | 
        Managing severe curvature of radix    entomolaris: three-dimensional analysis with cone beam computed tomography | 
        CBCT provided more accurate    information in terms of RE inclination and root canal curvature before    commencing root canal treatment. | 
      
      
        | Je´roˆme Michetti et al. [22] | 
        2010 | 
        90 teeth | 
        Validation of Cone Beam Computed    Tomography as a Tool to Explore Root Canal Anatomy | 
        Strong to very strong correlation was    found between the data acquired by using CBCT and histology | 
      
      
        | Patel S [23] | 
        2010 | 
        Case report | 
        The use of cone beam computed    tomography in the conservative management of dens invaginatus | 
        The true nature of dens invaginatus    cannot always be estimated from conventional radiographs.  Cone beam computed tomography is a useful    diagnostic tool in the management of dens invaginatus. | 
      
      
        | Kottoor J et al. [24] | 
        2011 | 
        Case report | 
        Four-rooted maxillary first molar    having C-shaped palatal root canal morphology evaluated using cone-beam    computerized tomography | 
        The evaluation of CBCT images can    result in better understanding of root canal anatomy, which enables the    clinician to investigate the root canal system and to clean, shape, and    obturate it more effectively. | 
      
      
        | Kottoor J [25] | 
        2010 | 
        Case report | 
        Endodontic management of a maxillary    first molar with eight root canals evaluated using cone-beam computed    tomography scanning | 
        The use of CBCT imaging in    endodontically challenging cases can facilitate a better understanding of the    complex root canal anatomy, which ultimately enables the clinician to explore    the root canal system and clean, shape, and obturate it more efficiently. | 
      
      
        | Vier-Pelisser FV et al. [26] | 
        2012 | 
        Case report | 
        Use of cone beam computed tomography    in the diagnosis, planning and follow up of a type III dens invaginatus case. | 
        CBCT may aid the diagnosis as well as the    management plan and follow-up of teeth with this developmental anomaly. | 
      
      
        | La SH et al. [27] | 
        2010 | 
        Case report | 
        Identification of independent middle    mesial canal in mandibular first molar using cone-beam computed tomography    imaging. | 
        This case report highlights the    usefulness of CBCT imaging for accurate diagnosis and management of the    unusual canal morphology. | 
      
      
        | Bernardes RA et al. [28] | 
        2012 | 
        34 teeth | 
        Comparative study of cone beam    computed tomography and intraoral periapical radiographs in diagnosis of    lingual-simulated external root resorptions. | 
        Cone beam computed tomography showed    better diagnostic ability compared with intraoral radiography, regardless of    the tooth or the dimensions of the resorption evaluated. | 
      
      
        | Reis AG [29]  | 
        2013 | 
        100 patients, 343 teeth | 
        Correlating second canal in mesiobuccal root of maxillary molars with root third and patient age
            | 
        The    prevalence of MB2 canals was found to decrease as the root canal approaches the apical third and as    age increases. CBCT scanning proved effective in mapping    MB2 canals present in different thirds of the root.  | 
      
      
        | Guerrero ME [30]  | 
        2013 | 
        256 Patients | 
        Comparison of panoramic radiography and CBCT to    predict postoperative outcome after wisdom tooth removal | 
        This study concluded that, CBCT was not better than panoramic radiography in    predicting postoperative complications for moderate-risk cases of impacted    third mandibular molars. Nonetheless, a CBCT buccolingualview    can accurately confirm the number of roots and root morphology of the third molar better than PA  | 
      
      
        | Vizzotto MB[31]  | 
        2013 | 
        89 maxillary molar teeth | 
        CBCT for the assessment of second mesiobuccal (MB2)    canals in maxillary molar teeth: effect of voxel size and presence of root    filling.
            | 
        CBCT was associated with higher mean values of specificity and    sensibility than radiographic examination for the detection of MB2 canals.    When endodontic retreatment is necessary removal of    the root filling prior to the CBCT examination eliminates artifacts.  |