Comparative diagnostic yield of cone beam CT reconstruction using various software programs on the detection of vertical root fractures

Melo, Saulo Leonardo Sousa; Haiter-Neto, Francisco; Corrêa, Luis Felipe Dutra; Scarfe, W C; Farman, Allan G.

doi:10.1259/dmfr.20120459

Cited by 37 publications

(44 citation statements)

References 28 publications

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“…13,17,18 The influence of AR has been studied; nevertheless, our literature review showed that only one study evaluated its influence on the diagnosis of root fractures. 4 That study, however, used root canals filled with gutta-percha, a material known to produce fewer artefacts than do metal posts.…”

Section: Discussionmentioning

confidence: 99%

“…Difficulties in the diagnosis of root fractures in roots filled with high-density materials owing to artefact formation is one well-established problem in the literature. 7,8,12,14,15,17,18 The AR has emerged as an alternative to control artefact formation and thus increase diagnostic certainty. However, we could not confirm this hypothesis, as some have already reported.…”

Section: Discussionmentioning

confidence: 99%

“…Artefacts affect image quality and may increase difficulty of root fracture diagnosis substantially. 4,12,[15][16][17][18] In teeth with intracanal fillings, artefacts occur owing to differences in the attenuation and absorption of X-ray beams by high-density material physics that cause beam-hardening phenomenon. The resulting image is altered by hypodense bands (dark bands), hyperdense striations (white streaks) and distortion of metal objects (cupping artefacts), which can all interfere with fracture detection and may lead to falsepositive results.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the artefact reduction algorithm of Picasso Trio CBCT system on the diagnosis of vertical root fractures in teeth with metal posts

Bezerra¹,

Neves²,

Vasconcelos³

et al. 2015

Dentomaxillofacial Radiology

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Objectives: To assess the influence of the artefact reduction algorithm (AR) available on the Picasso Trio 3D ® imaging system (Vatech, Hwaseong, Republic of Korea) on image quality [greyscale values, contrast-to-noise ratio (CNR) and artefact formation] and diagnosis of vertical root fractures (VRFs) in the teeth with intracanal metal posts. Methods: 30 uniradicular teeth had their crowns removed and their roots endodontically treated to receive intracanal metal posts. In 20 teeth, both complete (n 5 10) and incomplete (n 5 10) VRFs were created. Each tooth was scanned twice, with and without AR activation. The mean and variation of greyscale values, as well as CNR, were calculated for all images. Subsequently, an evaluator compared the amount of artefact (cupping, white streaks and dark bands) in all images. Five evaluators rated for VRF presence using a five-point scale.Results: Mean greyscale values and CNR were significantly decreased in images acquired with the AR. The usage of the algorithm promoted an overall reduction of image artefacts. Regarding the diagnosis of complete and incomplete VRFs, the use of the AR had an overall negative impact on specificity and accuracy. Conclusions: While indeed reducing artefact formation, the use of the AR, instead of improving the impact on the diagnosis of VRFs in teeth with intracanal metal posts, had a negative impact on the diagnosis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of the artefact reduction algorithm of Picasso Trio CBCT system on the diagnosis of vertical root fractures in teeth with metal posts

Bezerra¹,

Neves²,

Vasconcelos³

et al. 2015

Dentomaxillofacial Radiology

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“…The teeth were then scanned, and the images were reconstructed using various software tools. 33 The results for VRF diagnostic accuracy were similar irrespective of the software used.…”

Section: Discussionmentioning

confidence: 73%

Diagnosis of vertical root fracture in endodontically treated teeth using computed tomography

Huang

Lee

2015

Journal of Dental Sciences

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Available online ---KEYWORDS cone beam computed tomography; field of view; periapical radiograph; vertical root fracture; voxel Abstract Vertical root fracture (VRF) is defined as a root fracture in the longitudinal direction, extending from the root to the crown on facial or lingual surfaces. Most VRFs occur in endodontically treated teeth, and the symptoms are similar to those of chronic apical periodontitis or chronic periodontitis. Diagnosing VRF with periapical radiography is difficult. Conversely, cone beam computed tomography (CBCT) provides three-dimensional images and is better at diagnosing VRF than periapical radiography. Therefore, dentists should know how to operate CBCT to obtain clear images and reduce image artifact interferences, thus achieving higher diagnostic accuracy. CBCT imaging includes acquisition configuration, image detection, image reconstruction, and image display. We retrospectively examined four human studies and 19 in vitro studies and focused on certain imaging parameters: field of view selection, voxel size, proper detectors, different image processing methods, and the influence of posts on clear image acquisition. Finally, we discuss the experimental design faults in the reviewed in vitro studies and suggest improvements for future CBCT techniques to achieve higher VRF diagnostic accuracy.

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“…5,8 The presence of image artefacts resulting from radio-opaque materials, such as metals, gutta-percha and root canal sealers, decrease the accuracy of VRF detection using CBCT. [14][15][16][17] A previous study evaluated the shapes of radiolucent areas on periapical radiographs of teeth with VRF and apical periodontitis. 7 The shapes of the radiolucent areas on periapical radiographs of VRF teeth were found to be more complicated than those of non-VRF teeth in endodontically treated maxillary incisors and pre-molars.…”

Section: Introductionmentioning

confidence: 99%

Differential diagnosis of vertical root fractures using reconstructed three-dimensional models of bone defects

Komatsu

Abe²,

Yoshioka³

et al. 2014

Dentomaxillofacial Radiology

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Objectives: The purpose of this study was to evaluate the accuracy of diagnosing vertical root fractures (VRFs) by comparing the volume of bone defects in VRFs with those in nonVRFs on reconstructed three-dimensional (3D) models (TDMs) using CBCT. Methods: 32 maxillary pre-molars and anterior teeth with radiolucent areas were evaluated on pre-operative CBCT images. Of the 32 teeth, 16 had a fractured root (VRF group) and 16 had a non-fractured root (non-VRF group). The radiolucent area of each tooth was traced in each dimension [mesiodistal, buccolingual and horizontal (the apicoincisal aspect)] by two observers, and 3D images were reconstructed with the Amira ® software (Visage Imaging Inc., Richmond, Australia). The volume, V, of the TDM was divided into the coronal side and the periapical side at the horizontal slice through the apical foramen, and v was defined as the volume of the coronal side. The values of v/V were calculated for all cases. The Mann-Whitney U test was used to compare values between the VRF group and the non-VRF group (p , 0.05). A receiver operating characteristic (ROC) curve was constructed to select the optimal cut-point. Results: There was a statistically significant difference in the value of v/V between the two groups (p , 0.05). With a cut-point derived from the ROC curve, and the sensitivity, specificity and accuracy of predicting the VRFs were 1.00, 0.75 and 0.88, respectively. Conclusions: Lesions resulting from VRFs can be distinguished from those of non-VRFs on 3D CBCT images with a high degree of accuracy, based on their different 3D shapes.

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Comparative diagnostic yield of cone beam CT reconstruction using various software programs on the detection of vertical root fractures

Cited by 37 publications

References 28 publications

Influence of the artefact reduction algorithm of Picasso Trio CBCT system on the diagnosis of vertical root fractures in teeth with metal posts

Influence of the artefact reduction algorithm of Picasso Trio CBCT system on the diagnosis of vertical root fractures in teeth with metal posts

Diagnosis of vertical root fracture in endodontically treated teeth using computed tomography

Differential diagnosis of vertical root fractures using reconstructed three-dimensional models of bone defects

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