Abstract
Introduction
This study assessed the influence of voxel size and filter application in detecting
second mesiobuccal (MB2) canals in cone-beam computed tomographic (CBCT) images.
Methods
Using the OP300 CBCT system (Instrumentarium, Tuusula, Finland) and 3 voxel size protocols
(80 μm, 125 μm, and 200 μm), we scanned 40 first molars: 20 with an MB2 canal and
20 without. All molars received silver palladium pins on the palatal root, whereas
the non-MB2 molars were also filled with gutta-percha. Five oral radiologists assessed
the presence of an MB2 canal under 3 filter application conditions: without filter,
with sharpen 1 × filter, and with sharpen 2 × filter. Intra- and interobserver reproducibility
was evaluated using the weighted kappa index. We compared the area under the receiver
operating characteristic curves with SPSS Statistics v.20.0 (IBM Corp, Armonk, NY)
using 2-way analysis of variance and the Tukey post hoc test with 5% significance
level.
Results
Our analysis found median intra- and interobserver agreement values of 0.70 and 0.56,
respectively. The 80-μm voxel with sharpen 1 × filter image group had the highest
sensitivity, accuracy, and negative predictive values. As for specificity and positive
predictive, the 80-μm voxel group without filter application presented the highest
values. The areas under the receiver operating characteristic curve were higher in
the 80-μm groups than in the 125-μm and 200-μm voxel size groups (P < .05). We found no differences among the filters used (P = .22) or for the filter–voxel size interactions (P = .88).
Conclusions
A smaller voxel size increased the accuracy in detecting MB2 canals, whereas the enhancement
filters did not.
Key Words
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Journal of EndodonticsAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
References
- Aetiology, classification and pathogenesis of pulp and periapical disease.Med Oral Patol Oral Cir Bucal. 2004; 9 (52–57): 58-62
- An overview of the dental pulp: Its functions and responses to injury.Aust Dent J. 2007; 52: S4-S6
- Assessment of the second mesiobuccal root canal in maxillary first molars: a cone-beam computed tomographic study.J Endod. 2017; 43: 1990-1996
- Analysis of cause of endodontic failure of C-shaped root canals.Scanning. 2018; 2018: 2516832
- Missed canal systems are the most likely basis for endodontic retreatment of molars.Tex Dent J. 2013; 130: 127-139
- The incidence of second mesiobuccal canals located in maxillary molars with the aid of cone-beam computed tomography.J Endod. 2018; 44: 565-570
- Missed canals in endodontically treated maxillary molars of a Brazilian subpopulation: prevalence and association with periapical lesion using cone-beam computed tomography.Clin Oral Investig. 2021; 25: 2317-2323
- Second mesiobuccal root canal in maxillary molars—a systematic review and meta-analysis of prevalence studies using cone beam computed tomography.Arch Oral Biol. 2020; 113: 104589
- Influence of CBCT enhancement filters on diagnosis of vertical root fractures: a simulation study in endodontically treated teeth with and without intracanal posts.Dentomaxillofac Radiol. 2015; 44: 2-7
- Diagnosis of mesiodistal vertical root fractures in teeth with metal posts: influence of applying filters in cone-beam computed tomography images at different resolutions.J Endod. 2018; 44: 470-474
- Influence of voxel size on cone-beam computed tomography-based detection of vertical root fractures in the presence of intracanal metallic posts.Imaging Sci Dent. 2018; 48: 177-184
- Influence of adjacent teeth restored with metal posts in the detection of simulated internal root resorption using CBCT.Int Endod J. 2020; 53: 1299-1306
- AAE and AAOMR joint position statement: use of cone beam computed tomography in endodontics 2015 update.J Endod. 2015; 120: 508-512
- European Society of Endodontology position statement: use of cone beam computed tomography in endodontics: European Society of Endodontology (ESE) developed by.Int Endod J. 2019; 52: 1675-1678
- Technical aspects of dental CBCT: state of the art.Dentomaxillofac Radiol. 2015; 44: 20140224
- Ex vivo detection of mesiobuccal canals in maxillary molars using CBCT at four different isotropic voxel dimensions.Int Endod J. 2011; 44: 752-758
- CBCT for the assessment of second mesiobuccal (MB2) canals in maxillary molar teeth: effect of voxel size and presence of root filling.Int Endod J. 2013; 46: 870-876
- Variable-resolution cone-beam computerized tomography with enhancement filtration compared with intraoral photostimulable phosphor radiography in detection of transverse root fractures in an in vitro model.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009; 108: 939-945
- Influence of enhancement filters in apical bone loss measurement: a cone-beam computed tomography study.J Clin Exp Dent. 2017; 9: e516-e519
- Cone-beam CT in paediatric dentistry: DIMITRA project position statement.Pediatr Radiol. 2018; 48: 308-316
- Influence of the intracanal material and metal artifact reduction tool in the detection of the second mesiobuccal canal in cone-beam computed tomographic examinations.J Endod. 2020; 46: 1067-1073
- Caries prediction - state of the art.Community Dent Oral Epidemiol. 1997; 25: 87-96
- What is an ROC curve?.Emerg Med J. 2017; 34: 357-359
- Artefacts in CBCT: a review.Dentomaxillofac Radiol. 2011; 40: 265-273
- Accuracy of detecting vertical root fractures in non-root filled teeth using cone beam computed tomography: effect of voxel size and fracture width.Int Endod J. 2019; 52: 887-898
- The influence of voxel size and artifact reduction on the detection of vertical root fracture in endodontically treated teeth.Acta Odontol Scand. 2020; 0: 1-5
- Cone-beam computed tomography to detect erosions of the temporomandibular joint: effect of field of view and voxel size on diagnostic efficacy and effective dose.Am J Orthod Dentofacial Orthop. 2011; 140: e25-e30
- Comparison of CBCT with different voxel sizes and intraoral scanner for detection of periodontal defects: an in vitro study.Dentomaxillofac Radiol. 2020; 49: 1-7
- Effect of voxel size on detection of external root resorption defects using cone beam computed tomography.Iran J Radiol. 2016; 13: e34985
- Influence of voxel size on the accuracy of linear measurements of the condyle in images of cone beam computed tomography: a pilot study.J Clin Exp Dent. 2018; 10: e876-e882
- Accuracy of CBCT images in the volumetric assessment of residual root canal filling material: effect of voxel size.Niger J Clin Pract. 2019; 22: 1091-1098
- Radiographic digital image enhancement. Part II: transform domain techniques.Dentomaxillofac Radiol. 2001; 30: 65-77
- Comparison of two - and three-dimensional filtering methods to improve image quality in multiplanar reconstruction of cone-beam computed tomography.Oral Radiol. 2009; 25: 154-158
- Influence of cone beam CT enhancement filters on diagnosis ability of longitudinal root fractures.Dentomaxillofac Radiol. 2014; 43: 3-7
- Influence of cone-beam computed tomography enhancement filters on diagnosis of simulated external root resorption.J Endod. 2012; 38: 305-308
- Influence of cone-beam computed tomography filters on diagnosis of simulated endodontic complications.Int Endod J. 2017; 50: 1089-1096
- Receiver operating characteristic curve in diagnostic test assessment.J Thorac Oncol. 2010; 5: 1315-1316
Article info
Publication history
Published online: June 20, 2021
Identification
Copyright
© 2021 American Association of Endodontists.
