Detection of dental root fractures by using cone-beam computed tomography

Wang, P; Yan, XB; Lui, DG; Zhang, WL; Zhang, Y; Ma, Xin

doi:10.1259/dmfr/84907460

Cited by 119 publications

(120 citation statements)

References 25 publications

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“…The sensitivity value in their study was lower than the value in some other studies (6) because the statistical analysis for fracture detection accuracy was different. In the current study and some other similar studies, observing a fracture line in one of the three planes meant that the tooth had a fracture, but in the study by Wang et al (25), the line of fracture had to be observed at least in two planes and this caused a decline in the sensitivity value in their study. In many studies (6,25), the diagnostic accuracy of CBCT has been compared with that of conventional and digital intraoral radiography for detection of VRFs and in all of them CT was found to be superior.…”

Section: Discussioncontrasting

confidence: 55%

Effect of Time Lapse on the Diagnostic Accuracy of Cone Beam Computed Tomography for Detection of Vertical Root Fractures

et al. 2016

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Accurate and early diagnosis of vertical root fractures (VRFs) is imperative to prevent extensive bone loss and unnecessary endodontic and prosthodontic treatments. The aim of this study was to assess the effect of time lapse on the diagnostic accuracy of cone beam computed tomography (CBCT) for VRFs in endodontically treated dog's teeth. Fortyeight incisors and premolars of three adult male dogs underwent root canal therapy. The teeth were assigned to two groups: VRFs were artificially induced in the first group (n=24) while the teeth in the second group remained intact (n=24). The CBCT scans were obtained by NewTom 3G unit immediately after inducing VRFs and after one, two, three, four, eight, 12 and 16 weeks. Three oral and maxillofacial radiologists blinded to the date of radiographs assessed the presence/absence of VRFs on CBCT scans. The sensitivity, specificity and accuracy values were calculated and data were analyzed using SPSS v.16 software and ANOVA. The total accuracy of detection of VRFs immediately after surgery, one, two, three, four, eight, 12 and 16 weeks was 67.3%, 68.7%, 66.6%, 64.6%, 64.5%, 69.4%, 68.7%, 68% respectively. The effect of time lapse on detection of VRFs was not significant (p>0.05). Overall sensitivity, specificity and accuracy of CBCT for detection of VRFs were 74.3%, 62.2%, 67.2% respectively. Cone beam computed tomography is a valuable tool for detection of VRFs. Time lapse (four months) had no effect on detection of VRFs on CBCT scans.

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Section: Discussioncontrasting

confidence: 55%

Effect of Time Lapse on the Diagnostic Accuracy of Cone Beam Computed Tomography for Detection of Vertical Root Fractures

et al. 2016

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“…As conventional radiographs and CBCT images have been already compared for root fracture diagnosis in the literature, [34][35][36][37][38] we decided not to include periapical radiography, since the main objective of the study was to evaluate the influence of the CBCT AR in the detection of complete and incomplete root fractures. The assessment of incomplete root fractures is a difficult diagnostic task; in this sense, even in CBCT examinations of teeth with clinical signs of root fracture, the fracture lines may not be visualized.…”

Section: Discussionmentioning

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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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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“…As a reconstruction technique, cone beam computed tomography could be used as a tool to explore root canal anatomy and detect fractures in it 9,10) . Here we used a similar one CMT for reconstruction of Guttapercha in order to investigate the internal distribution of the nanoparticles and correlate it to the observed mechanical properties.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of X-ray computed microtomography to determine structure-property relationships of Gutta-percha

et al. 2017

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We have shown that Computed Microtomography (CMT) is able to map the internal distribution of the filler particles in ProTaper TM , Lexicon TM , and GuttaCore TM materials, and explain the differences in their tensile and ductility properties, prior to mechanical manipulation. Working of uncrosslinked ProTaper™ and Lexicon TM samples resulted in a five-fold increase in ductility and the tensile elongation at break. CMT mapping of the internal structure showed that large, periodic, striations formed across the interior of the sample corresponding to the formation of regions with low filler particle density. In contrast to metals which harden upon working, this migration of particles away from the high stress regions resulted in stress softening, as predicted by the Mullins effect.The results indicate that CMT is an effective method for 3-D visualization of the internal particle distribution which permits the determination of structure-property relationships and facilitates the design of new materials.

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Detection of dental root fractures by using cone-beam computed tomography

Cited by 119 publications

References 25 publications

Effect of Time Lapse on the Diagnostic Accuracy of Cone Beam Computed Tomography for Detection of Vertical Root Fractures

Effect of Time Lapse on the Diagnostic Accuracy of Cone Beam Computed Tomography for Detection of Vertical Root Fractures

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

Effectiveness of X-ray computed microtomography to determine structure-property relationships of Gutta-percha

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