Detection of Horizontal Root Fracture with Small-volume Cone-Beam Computed Tomography in the Presence and Absence of Intracanal Metallic Post

Costa, Felipe Ferreira; Gaia, Bruno Felipe; Umetsubo, Otavio Shoiti; Cavalcanti, Marcelo Gusmão Paraíso

doi:10.1016/j.joen.2011.05.040

Cited by 79 publications

(117 citation statements)

References 25 publications

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“…Several studies have confirmed the superiority of CBCT over periapical radiographs for detection of root and endodontic conditions, 6,7,14,15,22 but other studies demonstrated that gutta-percha and metal posts produce artefacts that make visualization of fracture lines in endodontically treated and restored teeth a challenging task. 4,6,7,9,14,16 The beamhardening effect, for instance, causes the edges of metallic objects to appear brighter than their centres and produces hyperdense streak-like artefacts that can impair diagnostic performance. 6,7,9,15,16 We tested whether CBCT filters could be an option to decrease the influence of the artefacts on the diagnosis of VRF.…”

Section: Discussionmentioning

confidence: 99%

“…4,6,7,9,14,16 The beamhardening effect, for instance, causes the edges of metallic objects to appear brighter than their centres and produces hyperdense streak-like artefacts that can impair diagnostic performance. 6,7,9,15,16 We tested whether CBCT filters could be an option to decrease the influence of the artefacts on the diagnosis of VRF. It appears that the application of enhancement filters in digital radiography makes diagnosis of 23,25 As one may conclude, the influence of filters on aiding dental diagnosis is still controversial; furthermore, most studies about the diagnostic advantages of filters used periapical radiographs, and the few studies that evaluated the application of CBCT filters for diagnosis of root fractures did not include teeth with intracanal materials.…”

Section: Discussionmentioning

confidence: 99%

“…Beam hardening and streak artefacts can be superimposed on the root, creating difficulties for image assessment and may even mimic root fractures. 4,6,7,9,12,[15][16][17] Some specific tools can be used to analyse CBCT images, including filters that use mathematical algorithms to minimize image noise and improve image quality. 18,19 Some studies have shown that CBCT filters improve the diagnosis of root fractures in nonendodontically treated teeth, 5,19 but studies evaluating the influence of filters on the diagnosis of fractures in endodontically treated roots are still missing.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of CBCT enhancement filters on diagnosis of vertical root fractures: a simulation study in endodontically treated teeth with and without intracanal posts

Ferreira

Visconti²,

Nascimento³

et al. 2015

Dentomaxillofacial Radiology

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Objectives: To evaluate the influence of CBCT enhancement filters on the diagnosis of vertical root fractures (VRFs) in teeth with and without metal posts. Methods: The crowns of 40 uniradicular human teeth were removed and all roots were prepared. 20 teeth were randomly selected, and VRFs were induced using a universal testing machine. The i-CAT (Imaging Sciences International, Hatfield, PA) CBCT was used to scan teeth with and without intracanal metal posts using the following parameters: 0.2 voxel size, 8 3 8-cm scan size and acquisition time of 26.9 s. Images were evaluated by three observers with and without the use of the following filters: S9, smooth, smooth 3 3 3, sharpen, sharpenmild and sharpen 3 3 3. Results: Intra-and interobserver agreement ranged from poor to moderate. Images with and without CBCT filters did not show significant differences regarding the area under the receiver operating characteristic curve, as well as sensitivity (p . 0.05). As for accuracy, the sharpen-mild filter was superior to the sharpen (p 5 0.03), but these filters did not differ from all others. For specificity, S9, smooth and original images were superior to sharpen (p , 0.01). Results for teeth without posts differed from those for teeth with metal posts in all cases (p , 0.05). Conclusions: The use of enhancement filters in CBCT images has no influence on the diagnosis of VRFs in teeth with metal posts, and their use is not justified.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of CBCT enhancement filters on diagnosis of vertical root fractures: a simulation study in endodontically treated teeth with and without intracanal posts

Ferreira

Visconti²,

Nascimento³

et al. 2015

Dentomaxillofacial Radiology

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show abstract

“…According to Yamauchi et al 15 and Costa et al 20 and also Cavalcanti,21 OsiriX is easy-to-use open source software, offering advanced and useful postprocessing imaging protocols, thus making it a versatile DICOM viewer offering regular updates. In our opinion the post-processing method used in this software is a new and important tool for the den- 21 our study demonstrated the assessment of MF and AMF for implant planning.…”

Section: Discussionmentioning

confidence: 99%

Assessment of open source software for CBCT in detecting additional mental foramina

et al. 2013

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The purpose of this study was to evaluate which post-processing imaging protocol would be better to analyze the additional mental foramen (AMF) in preoperative planning with cone-beam computed tomography (CBCT) exams, and to test reproducibility of measurements, using open source software (OsiriX). The software was used to detect the cases of AMF from among 58 exams for dental implant planning in edentulous mandible areas-three cases were found. The case images were submitted to qualitative analysis using 2D orthogonal MPR, 3D-MPR and 3D volume rendering protocols by two oral and maxillofacial radiologists. Quantitative analysis used the 3D-MPR protocol; the closed polygon tool measured the mental foramen (MF) and the AMF areas; the length tool measured the distance between foramina. The measurements were performed independently by the examiners, at two different times. Intra-and interexaminer agreement was assessed using the intraclass correlation coefficient. The panoramic view did not show the MF and the AMF clearly. The AMF could be detected in the parasagittal view. 2D Orthogonal MPR was effective to observe the AMF in some cases. The 3D-MPR and 3D view protocols were the most effective to locate and analyze the AMF. In conclusion, a 3D view improves visualization when anatomical points are not clearly visible. 3D-MPR was considered a more effective post-processing imaging protocol to observe foramina relationships. The high reproducibility of measurements for anatomical MF variations was established using specific tools featured in open source software for CBCT. OsiriX is realistic and recommended for preoperative planning.

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“…24 Parirokh ve arkadaşları 25 tarafından bildirilen olgu sunumunda; KIBT görüntülerinde kök etrafında radyolüsent lezyon saptanan metal kanal postlu dişin, konvansiyonel radyografik inceleme ve dental operatif mikroskop ile incelemesi sonucu herhangi bir patolojiye sahip olmadığı belirtilmiştir. KIBT'da saptanan bu radyolüsent görüntünün, metal kanal postundan kaynaklanan artefakt olduğu ve yanlış teşhise yol açtığı bildirilmiştir.…”

Section: Edi̇nme (Acquisition) Artefaktlariunclassified

Konik Işinli Bilgisayarli Tomografide Artefakt Çeşitleri Ve Nedenleri

Kalabalık¹,

Ertaş²

2015

Atatürk Üniversitesi Diş Hekimliği Fakültesi Dergisi

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Detection of Horizontal Root Fracture with Small-volume Cone-Beam Computed Tomography in the Presence and Absence of Intracanal Metallic Post

Cited by 79 publications

References 25 publications

Influence of CBCT enhancement filters on diagnosis of vertical root fractures: a simulation study in endodontically treated teeth with and without intracanal posts

Influence of CBCT enhancement filters on diagnosis of vertical root fractures: a simulation study in endodontically treated teeth with and without intracanal posts

Assessment of open source software for CBCT in detecting additional mental foramina

Konik Işinli Bilgisayarli Tomografide Artefakt Çeşitleri Ve Nedenleri

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