Number of basis images effect on detection of root fractures in endodontically treated teeth using a cone beam computed tomography machine: an in vitro study

Bechara, Boulos; McMahan, C. Alex; Nasseh, Ibrahim; Geha, Hassem; Hayek, Elie; Khawam, Georges; Raad, Michel; Noujeim, Marcel

doi:10.1016/j.oooo.2013.01.026

Cited by 46 publications

(48 citation statements)

References 23 publications

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“…21,30 Bechara et al 16 observed that doubling up the number of base images during acquisition promoted a significant decrease in the number of false-positive diagnosis of root fractures, thereby being an option to reduce artefacts caused by high-density objects. On the other hand, Neves et al 15 also increased the number of base images for diagnosing root fractures in the presence of metal posts but observed no improvement and concluded that such an approach does not help with root fracture diagnosis.…”

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: Introductionmentioning

confidence: 99%

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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“…On the contrary, Bechara et al 2012 [7] reported lowered accuracy while using MAR algorithm. This can be explained by their usage of phantoms in their study.…”

Section: Discussionmentioning

confidence: 97%

“…[11] CBCT with high resolution and MAR showed lower sensitivity than CBCT without (MAR) and this is attributed to that AR algorithm is activated based on a threshold. Any structure denser than the threshold will be corrected, all the attenuation information from high-density objects is removed as well, which may decrease the ability to confirm presence of fracture (true positive fracture), [7] however, this AR algorithm showed the highest specificity due to its higher ability to confirm absence of fractures (true negative fracture) due to decreased metal artifacts that may mimic fractures.…”

Section: Discussionmentioning

confidence: 99%

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Diagnostic accuracy of cone beam computed tomography with and without metal artifact reduction algorithm in detection of vertical root fractures of teeth with metallic posts

Shaker¹,

Mohamed²,

Abdelsamad³

2017

JMRPS

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Background:In cone beam computed tomography (CBCT), metallic structures can cause artifacts in the images, since most teeth suspected to have vertical root fractures (VRF) are endodontically treated and have a metallic post in the root canal, fracture detection may pose a challenge. Aim: This study aimed to determine the diagnostic accuracy of CBCT using metal artifact reduction (MAR) algorithm in detection of VRF of teeth with metallic posts. Materials and Methods: A total of 120 single-rooted extracted human teeth were obtained and endodontically treated then placed in an acrylic block, and metallic posts were inserted. After post insertion, the teeth roots were divided into two groups one with induced VRF and the other having intact roots with the posts inserted. Then, each tooth was coded and imaged by CBCT with and without using MAR algorithm. Results: Using the MAR algorithm improved the diagnostic accuracy but with no statistically significant difference. Conclusion:In case of presence of metallic posts, CBCT with MAR algorithm can be used to detect VRF.

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Principles of Cone Beam Computed Tomography

Scarfe¹

2023

3D Imaging in Endodontics

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Number of basis images effect on detection of root fractures in endodontically treated teeth using a cone beam computed tomography machine: an in vitro study

Cited by 46 publications

References 23 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

Diagnostic accuracy of cone beam computed tomography with and without metal artifact reduction algorithm in detection of vertical root fractures of teeth with metallic posts

Principles of Cone Beam Computed Tomography

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