The influence of metallic posts in the detection of vertical root fractures using different imaging examinations

Jakobson, S.; Westphalen, Vânia Portela Ditzel; Neto, Ulisses Xavier da Silva; Fariniuk, Luiz Fernando; Schroeder, A; Carneiro, Everdan

doi:10.1259/dmfr.20130287

Cited by 36 publications

(40 citation statements)

References 33 publications

(70 reference statements)

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“…24,27 Four studies compared CBCT detectors, and three of them showed that the diagnostic accuracy of image intensifier tube charged coupled devices (IIT/CCDs) was lower than that of flat-panel detectors (FPDs). 12,28,30 The remaining study showed no difference in diagnostic accuracy between FPDs and complementary metaleoxideesemiconductors (CMOSs). 26 Five studies compared the different voxel sizes (400 mm, 300 mm, 250 mm, 200 mm, and 125 mm) in the detection of VRFs, and the results showed that the smaller voxel sizes had a higher diagnostic accuracy.…”

Section: Resultsmentioning

confidence: 94%

“…One in vitro study showed a diagnostic accuracy of as high as 100%. 28 However, the highest reported diagnostic accuracy in the human studies was only 93% from a sample size of 14 patients. 8 Therefore, the results of the in vitro studies might not reflect the real clinical efficacy in detecting VRFs.…”

Section: Discussionmentioning

confidence: 97%

“…10,12,26,28,30 Other studies further demonstrated that IIT/CCD detectors generate more noise and artifacts than FPD detectors and consequently result in lower diagnostic accuracy. 12,28,30 Comparison of CMOS and FPD detectors using approximate irradiation conditions (85 kVp, 8 mA, 6 cm Â 6 cm FOV, voxel size 0.133 mm, image reconstruction time w4 minutes vs. 120 kVp, 36.12 mA, 6 cm Â 8 cm FOV, voxel size 0.125 mm, image reconstruction time w9 minutes) were shown to give similar diagnostic accuracy. 26 The third factor affecting image quality is image reconstruction.…”

Section: Discussionmentioning

confidence: 99%

“…32 However, one study demonstrated results whereby the metal post did not affect image quality. 28 The major reason may be the fracture width created in extracted teeth; however, this factor has not been discussed in the literature.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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

Huang

Lee

2015

Journal of Dental Sciences

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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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Dental undergraduate students' ability in the diagnosis of root fractures: Comparative analysis of different imaging methods

Paz

Borges

Rodrigues

et al. 2021

Journal of Dental Education

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The aim of this study was to evaluate the diagnostic ability of dental undergraduate students to detect horizontal and oblique root fractures (ORFs) using different imaging techniques. Materials and methods: Nine teeth were selected and randomly divided in three groups in order to create a fracture line without fragments separation: control (without fracture), horizontal root fracture (HRF), and ORF. The root fracture was created using perpendicular force and was confirmed by transillumination. A model with two adjacent teeth was created, and different imaging techniques were performed: conventional periapical radiograph; mesially and distally shifted periapical radiographs; cone-beam computer tomography (CBCT). Twenty students that had participation on dental trauma clinic at the year of 2019 were invited to identify root fractures by a five-point scale: (i) fracture definitely not present, (ii) fracture probably not present, (iii) uncertain whether fracture is present or not, (iv) fracture probably present, and (v) fracture definitely present. Data were analyzed by Kappa test for agreement evaluation. Results:Comparing each student to the gold standard, there was a variation in reproducibility and performance from poor to substantial (0.042-0.667). Reproducibility values ranged from poor to good for all periapical radiographs both in the diagnosis of ORF (−0.33-0.667) and in HRF (0-1). Conclusions: In CBCT images, the students' ability was lower in HRF detection in comparison with the oblique ones. The students showed limited capacity to diagnose root fractures; however when CBCT was used, the performance was more satisfactory than when periapical radiographs were used.

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The influence of metallic posts in the detection of vertical root fractures using different imaging examinations

Cited by 36 publications

References 33 publications

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

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

Dental undergraduate students' ability in the diagnosis of root fractures: Comparative analysis of different imaging methods

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