Accuracy of working length measurement: electronic apex locator versus cone-beam computed tomography

2013 ◽  
Vol 47 (3) ◽  
pp. 246-256 ◽  
Author(s):  
C. Lucena ◽  
J. M. López ◽  
J. A. Martín ◽  
V. Robles ◽  
M. P. González-Rodríguez
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Length Measurement ◽  
Cone Beam ◽  
Working Length ◽  
Electronic Apex Locator

scholarly journals Endodontic length measurements using 3D Endo, cone-beam computed tomography, and electronic apex locator

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Khoa Van Pham
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
Actual Length ◽  
Exact Test ◽  
Working Length ◽  
Length Determination ◽  
Mean Differences ◽  
Electronic Apex Locator

Abstract Background The objective of this study is to investigate the accuracy of the 3D Endo software, cone-beam computed tomography (CBCT) software, and the electronic apex locator (EAL) in endodontic length determination. Methods 302 root canals in 111 human extracted molars were chosen. Access cavity was performed, and root canal lengths were measured with a digital caliper for actual length (AL) and EAL for electronic length. Teeth were then scanned using CBCT device at voxel size of 0.10 mm. It measured root canal lengths using the CBCT (Romexis Viewer), 3D Endo for proposed length (3D-PL) and correct length (3D-CL). Mean differences between the four methods with the AL were calculated and compared. Fisher’s exact test, paired t-test, Bland-Altman plot were used to test the differences among the experimental modalities in working length determination at the significance of 0.05. Results The accuracy in the range of ± 0.5 mm of the EAL ProPex II was highest among the experimental modalities, however this method disagreed with the actual length. Conclusions The correct working length after adjustment from the semi-automatically length by the 3D Endo software and Romexis Viewer measurements agreed with the AL.

Effects of voxel size and resolution on the accuracy of endodontic length measurement using cone beam computed tomography

2016 ◽  
Vol 208 ◽  
pp. 96-102 ◽  
Author(s):  
Ali Murat Aktan ◽  
Cihan Yildirim ◽  
Emrah Karataşlıoğlu ◽  
Mehmet Ertuğrul Çiftçi ◽  
Fatih Aksoy
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Length Measurement ◽  
Cone Beam ◽  
Voxel Size

scholarly journals A Comparison of Cone Beam Computed Tomography and Periapical Digital Radiography for Evaluation of Root Canal Preparation

2021 ◽  
Vol 11 (14) ◽  
pp. 6599
Author(s):  
Khoa Van Pham
Keyword(s):  
Computed Tomography ◽  
Digital Radiography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Cone Beam ◽  
Root Canal Preparation ◽  
Radiographic Images ◽  
Digital Radiograph ◽  
Working Length ◽  
Before And After

The aim of the present study is to compare cone beam computed tomography and periapical digital radiography for the evaluation of root canal preparation. Nine extracted human molars were used in this study. Following access cavity preparation, mesio-buccal roots of maxillary and mesial roots of mandibular molars were prepared and the remaining roots were cut off. Three amalgam cavities were prepared on the coronal part of the teeth and were filled with amalgam to be used as landmarks. Specimens were scanned using cone-beam computed tomography and periapical digital radiograph images were obtained before and after root canal preparation. WaveOne Gold Primary was used for root canal preparation to full working length. Specimens were then scanned using CBCT and a periapical radiograph for the after-instrumentation images. The transportation and centering ratio were measured and calculated on the CBCT and periapical radiographic images. The Bland–Altman method was used for detecting the bias in the evaluation of agreement between the two methods’ measurements. There was agreement between the two methods’ measurements using CBCT scans and periapical digital radiographic images in the evaluation of transportation and centering ratio parameters. The two methods could be used interchangeably in measurements of transportation and calculating the centering ratio.

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