TY - JOUR
T1 - Use of preoperative cone-beam computed tomography to aid in establishment of endodontic working length
T2 - A systematic review and meta-analysis
AU - Paterson, Andrew
AU - Franco, Vittorio
AU - Patel, Shanon
AU - Foschi, Federico
PY - 2020/9
Y1 - 2020/9
N2 - Purpose: This study was performed to assess the accuracy of preoperative cone-beam computed tomography (CBCT), when justified for other reasons, in locating the apical foramen and establishing the working length. Materials and Methods: Six electronic databases were searched for studies on this subject. All studies, of any type, were included if they compared measurements of working length with preoperative CBCT to measurements using an electronic apex locator (EAL) or histological reference standard. Due to the high levels of heterogeneity, an inverse-variance random-effects model was chosen, and weighted mean differences were obtained with 95% confidence intervals and P values. Results: Nine studies were included. Compared to a histological reference standard, CBCT indicated that the apical foramen was on average 0.40 mm coronal of its histological position, with a mean absolute difference of 0.48 mm. Comparisons were also performed to an EAL reference standard, but the conclusions could not be considered robust due to high levels of heterogeneity in the results. Conclusion: A low level of evidence is produced suggesting that preoperative CBCT shows the apical foramen to be on average 0.40 mm coronal to its histological position, with a mean absolute difference of 0.48 mm. (Imaging Sci Dent 2020; 50: 183-92).
AB - Purpose: This study was performed to assess the accuracy of preoperative cone-beam computed tomography (CBCT), when justified for other reasons, in locating the apical foramen and establishing the working length. Materials and Methods: Six electronic databases were searched for studies on this subject. All studies, of any type, were included if they compared measurements of working length with preoperative CBCT to measurements using an electronic apex locator (EAL) or histological reference standard. Due to the high levels of heterogeneity, an inverse-variance random-effects model was chosen, and weighted mean differences were obtained with 95% confidence intervals and P values. Results: Nine studies were included. Compared to a histological reference standard, CBCT indicated that the apical foramen was on average 0.40 mm coronal of its histological position, with a mean absolute difference of 0.48 mm. Comparisons were also performed to an EAL reference standard, but the conclusions could not be considered robust due to high levels of heterogeneity in the results. Conclusion: A low level of evidence is produced suggesting that preoperative CBCT shows the apical foramen to be on average 0.40 mm coronal to its histological position, with a mean absolute difference of 0.48 mm. (Imaging Sci Dent 2020; 50: 183-92).
KW - Cone-beam computed tomography
KW - Dental pulp cavity
KW - Meta-analysis
KW - Tooth apex
UR - http://www.scopus.com/inward/record.url?scp=85092084196&partnerID=8YFLogxK
U2 - 10.5624/ISD.2020.50.3.183
DO - 10.5624/ISD.2020.50.3.183
M3 - Article
AN - SCOPUS:85092084196
SN - 2233-7822
VL - 50
SP - 183
EP - 192
JO - Imaging Science in Dentistry
JF - Imaging Science in Dentistry
IS - 3
ER -