Dimensional Distortion of Four Types of Intracanal Posts on CBCT Scans with Different Fields of View and Resolutions
Journal of Dental School,
Vol. 39 No. 3 (2021),
1 August 2022
,
Page 106-109
https://doi.org/10.22037/jds.v39i3.35289
Abstract
Objectives This study assessed the dimensional distortion of four types of intracanal posts on cone-beam computed tomography (CBCT) scans with two different fields of view (FOV) in high and standard resolution modes.
Methods This in vitro study evaluated 40 extracted single-rooted maxillary central incisors that underwent root canal treatment. The teeth were randomly assigned to 4 groups (n=10) for placement of non-tapered brass, silver, titanium and stainless steel (SS) intracanal posts. The diameter of the posts was measured at two reference points by a digital caliper (gold standard). The teeth underwent CBCT with 8 x 8 and 8 x 12 cm FOV with high and standard resolution modes. The post diameters were measured on axial CBCT images at the same reference points and compared with the gold standard. Data were analyzed by ANOVA, and paired and independent sample t-test.
Results Significant differences were noted between the radiographic diameter of the posts and their actual size (P<0.05). Titanium posts (40.25%) showed minimum percentage of dimensional distortion followed by brass (54%), silver (62.5%) and SS (70.17%) posts. High-resolution images with 8 x 8 cm FOV yielded minimum dimensional distortion (40.6%) followed by high-resolution images with 8 x 12 cm FOV (45.75%), standard-resolution images with 8 x 8 cm FOV (68.75%), and standard-resolution images with 8 x 12 cm FOV (72.1%).
Conclusion All metal posts showed significant dimensional distortion on CBCT scans, irrespective of the FOV size and resolution mode. SS posts yielded maximum, and titanium posts showed minimum dimensional distortion.
- Artifacts
- Cone-beam computed tomography
- Dimensional measurement accuracy
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References
Mamoun J. Post and core build-ups in crown and bridge abutments: Bio-mechanical advantages and disadvantages. J Adv Prosthodont. 2017;9(3):232-7.
Nance R, Tyndall D, Levin LG, Trope M. Identification of root canals in molars by tuned-aperture computed tomography. Int Endod J. 2000;33(4):392-6.
Cohenca N, Simon JH, Roges R, Morag Y, Malfaz JM. Clinical indications for digital imaging in dento-alveolar trauma. Part 1: traumatic injuries. Dent Traumatol . 2007;23(2):95-104.
Patel S, Brown J, Pimentel T, Kelly RD, Abella F, Durack C. Cone beam computed tomography in Endodontics - a review of the literature. Int Endod J. 2019;52(8):1138-52.
Valizadeh s, khosravi m, azizi z. Diagnostic accuracy of conventional, digital and cone beam ct in vertical root fracture detection. Iran Endod J. 2011;6(1):15-20.
Valizadeh S, Pouraliakbar H, Kiani L, Safi Y, Alibakhshi L. Evaluation of Visibility of Foreign Bodies in the Maxillofacial Region: Comparison of Computed Tomography, Cone Beam Computed Tomography, Ultrasound and Magnetic Resonance Imaging. Iran J Radiol. 2016;13(4):e37265.
Valizadeh S, Alibakhshi L, Ghazizadeh Ahsaie M, Kazemi S, Vasegh Z. Diagnostic Accuracy of Cone Beam Computed Tomography in Identification of Foreign Bodies in the Head and Neck Region. J Dent Sch 2018;36(4):136-9.
Nagarajappa AK, Dwivedi N, Tiwari R. Artifacts: The downturn of CBCT image. J Int Soc Prev Community Dent. 2015;5(6):440-5.
Ferreira RI, Bahrami G, Isidor F, Wenzel A, Haiter-Neto F, Groppo FC. Detection of vertical root fractures by cone-beam computerized tomography in endodontically treated teeth with fiber-resin and titanium posts: an in vitro study. Oral Surg Oral Med Oral Pathol Oral Radiol. 2013;115(1):e49-57.
Neves FS, Freitas DQ, Campos PS, Ekestubbe A, Lofthag-Hansen S. Evaluation of cone-beam computed tomography in the diagnosis of vertical root fractures: the influence of imaging modes and root canal materials. J Endod. 2014;40(10):1530-6.
Lira de Farias Freitas AP, Cavalcanti YW, Costa FCM, Peixoto LR, Maia AMA, Rovaris K, et al. Assessment of artefacts produced by metal posts on CBCT images. Int Endod J. 2019;52(2):223-236.
Diniz de Lima E, Lira de Farias Freitas AP, Mariz Suassuna FC, Sousa Melo SL, Bento PM, Pita de Melo D. Assessment of Cone-beam Computed Tomographic Artifacts from Different Intracanal Materials on Birooted Teeth. J Endod. 2019;45(2):209-213.e2.
Dutra KL, Pachêco-Pereira C, Bortoluzzi EA, Flores-Mir C, Lagravère MO, Corrêa M. Influence of Intracanal Materials in Vertical Root Fracture Pathway Detection with Cone-beam Computed Tomography. J Endod. 2017;43(7):1170-5.
Safi Y, Hosseinpour S, Aziz A, Bamedi M, Malekashtari M, Vasegh Z. Effect of Amperage and Field of View on Detection of Vertical Root Fracture in Teeth with Intracanal Posts. Iran Endod J. 2016;11(3):202-7.
Mohammadpour M, Bakhshalian N, Shahab S, Sadeghi S, Ataee M, Sarikhani S. Effect of titanium and stainless steel posts in detection of vertical root fractures using NewTom VG cone beam computed tomography system. Imaging Sci Dent. 2014;44(2):89-94.
Estrela C, Bueno M, Silva J, Porto O, Leles C, Azevedo B. Effect of intracanal posts on dimensions of cone beam computed tomography images of endodontically treated teeth. Dent Press Endod. 2011;1(1):28-36.
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