Calcifying odontogenic cysts: A 20-year retrospective clinical and radiological review.
CONCLUSION: Given the fact that COCs can present with a spectrum of clinical behaviours and radiological presentations, the academic debate regarding the cystic versus neoplastic nature of the entity is justifiable. The cases in the current sample presented with diverse clinical behaviours and radiological presentations, ranging from indolent to lesions with significant growth and aggression. PMID: 33591801 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 18, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Mandibular cortical index in the screening of postmenopausal at low mineral density risk: a systematic review.
CONCLUSIONS: Based on the literature included in this systematic review, we conclude that the MCI is useful as an auxiliary tool for identifying postmenopausal females at risk of low bone mineral density (BMD), as it correlates with skeletal BMD measured by dual X-ray absorptiometry. Nevertheless, other radiomorphometric indexes obtained from panoramic radiographs, such as panoramic mandibular index, mental index, and mandibular cortical width, are also valuable as auxiliary tools in the identification of postmenopausal females at risk, as they also correlate with BMD. Thus, it is not possible to affirm which index is the ...
Source: Dentomaxillofacial Radiology - February 18, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Prevalence of calcified epiglottis in postmortem computed tomography. Is there a correlation to failed endotracheal intubation?
CONCLUSIONS: To verify the result of our study, that is, the calcification of the epiglottis is not linked to a higher incidence of failed endotracheal intubation, it might be reasonable to repeat this study with a more representative study population. The high interindividual variations of calcified epiglottis could be used for identification. PMID: 33591846 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 18, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Investigation of the accessory maxillary ostium: A congenital variation or acquired defect?
Authors: Orhan Soylemez UP, Atalay B Abstract OBJECTIVE: We sought to determine whether an accessory maxillary ostium (AMO) is a congenital or acquired condition and we investigated concomitant sinus pathologies associated with this structure. METHODS: Paranasal sinus computed tomography examinations of individuals aged ≥ 13 years and
Source: Dentomaxillofacial Radiology - February 18, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of size of field of view (FOV), position within the FOV, and scanning mode on the detection of root fracture and observer's perception of artifacts in CBCT images.
Authors: de Oliveira Pinto MG, Melo SLS, Suassuna FCM, Marinho LE, Leite JBDS, Batista AUD, Bento PM, Melo DP Abstract OBJECTIVE: To assess the influence of field of view (FOV) size, scanning position within the FOV and scanning mode on the detection of root fracture and artifact perception. METHODS: Forty single-rooted premolars restored with NiCr and AgPd posts were divided into two groups: fractured and sound. All teeth were scanned using four CBCT scanning protocols varying FOV sizes (80 × 80 mm and 50 × 55 mm) and scanning modes (Standard and High Definition). The sample was positioned within t...
Source: Dentomaxillofacial Radiology - February 12, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Two decades of research on CBCT imaging in DMFR - an appraisal of scientific evidence.
CONCLUSION: Over the course of twenty years, SRs related to CBCT applications for a broad range of dental specialties have been published, with the vast majority of studies at levels 1 and 2 of diagnostic efficacy. Not all models available on the market have been scientifically validated. At all times, one should remain cautious as such not to simply extrapolate in vitro results to the clinical setting. Also, considering the wide variety of CBCT devices and protocols, reported results should not be overstated or generalized, as outcomes often refer to specific CBCT devices and protocols. PMID: 33555198 [PubMed - as sup...
Source: Dentomaxillofacial Radiology - February 9, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Synthetic magnetic resonance imaging for quantitative parameter evaluation of temporomandibular joint disorders.
CONCLUSION: The PD and T1 values of condylar bone marrow obtained from synthetic MRI can be used as sensitive indicators of TMJ disorder progression. The PD value of the bone marrow showed potential as a useful biomarker for recognizing the initial stages of TMJ disorders. Synthetic MRI is useful for the simultaneous acquisition of effective MRI parameters for evaluating TMJ disorders. PMID: 33544630 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 6, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Proton pump inhibitors and mandibular bone quality: A preliminary study.
CONCLUSIONS: Osteoporotic changes were detected in the trabecular and cortical bone in the mental foramen region in PPI users with fractal analysis and morphometric indices, while there were no differences for mandibular ramus and angulus regions according to fractal analysis. PMID: 33544631 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 6, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Current trends in the adoption and education of cone beam computed tomography and panoramic radiography machines across Australia.
CONCLUSIONS: CBCT machine numbers increased by nearly three-fold while PR machines only increased by 1.6 times over a six-year period relative to population size and number of dentists. Only very few Australian dental schools provide CBCT education to predoctoral students, raising concern as to whether graduates are adequately trained upon program completion. PMID: 33449832 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 17, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Refined tooth and pulp segmentation using U-Net in CBCT image.
CONCLUSIONS: This study proposed a two-phase deep learning solution for fast and accurately extracting any single tooth from a CBCT scan and performing accurate tooth and pulp cavity segmentation. The 3D reconstruction results can completely show the morphology of teeth and pulps, it also provides valuable data for further research and clinical practice. PMID: 33444070 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 16, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Diagnostic image quality of hand-held and wall-mounted X-ray devices in bitewing radiography: a non-inferiority clinical trial.
CONCLUSIONS: Subjectively assessed diagnostic image quality in bitewing radiographs acquired by HH and WM devices did not differ significantly. The hand-held device is thus non-inferior to the WM in this regard. Our data set of paired bitewing radiographs may subsequently aid in future research. PMID: 33417507 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 10, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Do various imaging modalities provide potential early detection and diagnosis of medication-related osteonecrosis of the jaw?: a review.
CONCLUSION: Currently, MRONJ-specific imaging features cannot be firmly established. However, the current data is valuable as it may lead to a more efficient diagnostic procedure along with a more suitable selection of imaging modalities. PMID: 33411572 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 9, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Benefits of using a photostimulable phosphor plate protective device.
Authors: de Moura G, Vizzotto MB, Tiecher PFDS, Arús NA, Silveira HLDD Abstract OBJECTIVES: To develop and test a protective device (PD) to increase the resistance of photostimulable storage phosphor (PSP) plate to compressive load, and assess the resulting image quality. METHODS: Two prototypes, polyvinylchloride sheets of 0.3 mm and 0.7 mm each, were developed for PSP plate size 2. The resistance to compressive load was tested using eight new PSPs divided into four test groups: (1) PSP, (2) PSP and paperboard protector, (3) PSP and 0.3 mm PD, and (4) PSP and 0.7 mm PD. The r...
Source: Dentomaxillofacial Radiology - January 9, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of CBCT-based volumetric distortion and beam hardening artefacts on the assessment of root canal filling quality in isthmus-containing molars.
Authors: Rodrigues CT, Jacobs R, Vasconcelos KF, Lambrechts P, Rubira-Bullen IRF, Gaêta-Araujo H, Oliveira-Santos C, Duarte MAH Abstract OBJECTIVES: To evaluate the influence of artefacts in cone beam CT (CBCT) images of filled root canals in isthmus-containing molars. METHODS: 10 teeth presenting canals with an isthmus were instrumented and filled with a thermoplasticised obturation technique. The teeth were scanned using a micro-CT device and two CBCT devices: 3D Accuitomo 170 (ACC) and NewTom VGi evo (NT), with different acquisition protocols: larger and smaller voxel size. Three examiners assessed the...
Source: Dentomaxillofacial Radiology - January 7, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Deep-learning for predicting C-shaped canals in mandibular second molars on panoramic radiographs.
CONCLUSIONS: The deep-learning system had significant accuracy in predicting C-shaped canals of mandibular second molars on panoramic radiographs. PMID: 33405976 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 7, 2021 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Attitude of brazilian dentists and dental students regarding the future role of artificial intelligence in oral radiology: a multi-center survey.
CONCLUSIONS: A generally positive attitude towards AI was found; an introductory lecture was beneficial towards this attitude and alleviated concerns regarding the effect of AI on the oral radiology profession. Given the unprecedented, on-going revolution of AI-augmented radiology, it is pivotal to incorporate AI topics in dental training curricula. PMID: 33353376 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 30, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Development and validation of two new image receptor-holding devices for overlapping reduction of proximal surfaces in bitewing radiography: a preclinical study.
Authors: Cascante-Sequeira D, Gaêta-Araujo H, Peroni LV, Oliveira-Santos C, Haiter-Neto F Abstract OBJECTIVE: To create and validate two new Image Receptor-Holding devices (IRHDs) to reduce proximal surfaces overlapping in bitewing radiography in comparison to a regular well-established and commercially available IRHD. METHODS: Two IRHDs for bitewing radiographs with a wedge on the biting surface were designed and 3D-printed. These IRHDs, with a large wedge (Pr-Lw) and small wedge (Pr-Sw), were compared with a regular commercially available IRHD (Rinn XCP®) during image acquisition of bitewing radiogr...
Source: Dentomaxillofacial Radiology - December 30, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Comparison of the image quality and radiation dose of different scanning modes in head-neck CT angiography.
CONCLUSION: In the head-neck CTA, the kV-Assist scan mode is recommended for patients with BMI between 18.5 and 34.9 kg m-2; GSI scanning mode is recommended for patients with BMI ≥34.9 kg m-2. PMID: 33353399 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 30, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Estimation of the radiation dose for dental spectral cone-beam CT.
CONCLUSION: SCBCT showed comparable doses with other CBCT devices, but DAP values were generally above currently published DRLs. Spectral imaging might allow for artefact reduction at comparable dose levels, which should be assessed in further image quality studies at both a technical and diagnostic level. PMID: 33353401 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 30, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

2021 - 50 years of DMFR and hopefully the beginning of the end of the COVID-19 crisis.
Authors: Bornstein MM PMID: 33305980 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 13, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Memories of the first 50 years of the journal Dentomaxillofacial Radiology.
Authors: White SC, Hirschmann P, Benn D, Brooks S, Schulze R Abstract As Dentomaxillofacial Radiology celebrates 50 years of publication, some former editors who have helped the journal reach this milestone reminisce on their time at the helm of the journal. PMID: 33305981 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 13, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Accuracy of three cone-beam CT devices and two software systems in the detection of vertical root fractures.
CONCLUSIONS: The PreXion 3D device is the most accurate when detecting VRF, with a performance similar to the OP300 in endodontic filled teeth. Kodak 9000 3D is indicated for teeth without fillings, with better accuracy using e-Vol DX software. PMID: 33259236 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 3, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of the exomass on the detection of simulated root fracture in cone-beam ct - an ex-vivo study.
CONCLUSIONS: Exomass-related metal artefacts did not influence the diagnosis of simulated VRF in CBCT. PMID: 33237809 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 27, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Parotid gland tumors: comparison of conventional and diffusion weighted MRI findings with histopathological results.
CONCLUSIONS: Warthin's tumor may occasionally be misdiagnosed as pleomorphic adenoma and malignant tumor because of variable morphologic features. In addition to benign-malignant differentiation, the added ADC measurement may also be useful for differentiating Warthin's tumors from pleomorphic adenomas. PMID: 33237812 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 27, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Diagnosis of cracked teeth using cone-beam computed tomography: Literature review and clinical experience.
Authors: Gao A, Cao D, Lin Z Abstract Cone-beam computed tomography (CBCT) has been widely used in diagnosis of vertical root fractures (VRFs) in recent years. According to the American Association of Endodontists (AAE) classification, there are five types of cracked teeth and VRF is one of them. Due to the variability and overlapping of the cracks and fractures, some narrow fractures on the roots of VRFs could not be detected by CBCT, and some wide cracks on the crown of cracked teeth could be detected by CBCT. In this review, we firstly discussed the value of CBCT in the diagnosis of the AAE five types of cracked...
Source: Dentomaxillofacial Radiology - November 27, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of a low-dose protocol for cone beam computed tomography of the temporomandibular joint - ethical and methodological considerations.
Authors: de Oliveira Reis L, Rosado LPL, Gaêta-Araujo H, Freitas DQ PMID: 33216661 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 21, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Artificial intelligence in oral and maxillofacial radiology: what is currently possible?
Authors: Heo MS, Kim JE, Hwang JJ, Han SS, Kim JS, Yi WJ, Park IW Abstract Artificial intelligence, which has been actively applied in a broad range of industries in recent years, is an active area of interest for many researchers. Dentistry is no exception to this trend, and the applications of artificial intelligence are particularly promising in the field of oral and maxillofacial (OMF) radiology. Recent researches on artificial intelligence in OMF radiology have mainly used convolutional neural networks, which can perform image classification, detection, segmentation, registration, generation, and refinement. A...
Source: Dentomaxillofacial Radiology - November 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Can diagnostic changes caused by cone beam computed tomography alter the clinical decision in impacted lower third molar treatment plan?
This study observed whether changes in diagnosis caused by analysis of three-dimensional images can lead to alterations in the treatment plans of impacted lower third molars (ILTM). METHODS: Sets of panoramic (PAN) - cone beam computed tomography (CBCT) of 218 patients were assessed for ILTM classification, contact with mandibular canal, contact and resorption of the lower second molar (LSM), intraoperative planning and postoperative expectations. RESULTS: Percentage agreement and McNemar test compared PAN vs CBCT assessments. Logistic regression analyzed the dependency of change in surgical planning considering th...
Source: Dentomaxillofacial Radiology - November 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Accuracy of high resolution ultrasound (US) for gingival soft tissue thickness mesurement in edentulous patients prior to implant placement.
Authors: Sonmez G, Kamburo─člu K, Gulsahi A Abstract OBJECTIVES: To evaluate and compare the accuracy of high resolution Ultrasound (US) with two different Cone Beam CT (CBCT) units and clinical assessment for measuring gingival soft tissue thickness in edentulous patients prior to implant placement. METHODS AND MATERIALS: The study consisted of 40 maxillary implant sites of 40 healthy patients (20 females, 20 males; mean age, 47.88 years). We prospectively evaluated labial/buccal gingival thickness in 40 implant regions (16 anterior and 24 posterior) by using limited field of view (FOV) CBCT images and US imag...
Source: Dentomaxillofacial Radiology - November 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Real time assessment of temporomandibular joint using HASTE sequences: feasibility and comparison with standard static sequences.
Authors: Ravanelli M, Bottoni L, Buffa I, Tononcelli E, Maroldi R, Farina D Abstract OBJECTIVE: to test real-time MRI (rtMRI) using HASTE sequences in patients with suspected internal disk derangement (IDD) of temporomandibular joint (TMJ) and to compare these sequences with standard static sequences. METHODS AND MATERIALS: 99 TMJ were studied with both standard sequences (fat-saturated proton density) and HASTE sequences with high temporal resolution. Image quality was assessed using a 4-point Likert scale. Two radiologists analysed both standard and rtMRI sequences separately, randomly and blinded (by a third...
Source: Dentomaxillofacial Radiology - November 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

MRI for the display of autologous onlay bone grafts during early healing-an experimental study.
CONCLUSIONS: MRI is eligible for the display and longitudinal observation of autologous onlay bone grafts. Image artifacts caused measurements deviations in some cases and minimized the precise assessment of graft volume. To the knowledge of the authors, this is the first study that used MRI for the longitudinal observation of autologous onlay bone grafts. PMID: 33201739 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Ambient dose during intraoral radiography with current techniques: part 3: effect of tube voltage.
CONCLUSION: Higher tube voltage results in higher remnant-beam transmission and more scattered radiation per workload. The relation is linear in the range between 60kV and 70 kV. Remnant-beam transmission at 70 kV is safely assessed at 7.5%. A conversion factor at 60 kV of 0.035 µSv/mAs at one meter for the scattered radiation dose can be proposed. Total ambient dose per exposure was higher at 60kV than at 70 kV. PMID: 33180551 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 14, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

MR Lymphography with superparamagnetic iron oxide for sentinel lymph node mapping of N0 early oral cancer: A pilot study.
CONCLUSION: MRL with SPIO is safe and useful imaging for the detection of SLNs in clinically N0 early oral cancer, and the optimal imaging timing is 10 min after SPIO injection. PMID: 33180632 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 14, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of different teaching methods in the radiographic diagnosis of proximal carious lesions.
CONCLUSIONS: All the tested methodologies had a similar performance; however, the traditional methodology showed less acceptance by the students when analyzed subjectively and comparatively. The results of the present study increase comprehension about teaching methodologies for radiographic diagnosis of proximal carious lesions, and there is a potential to build on the knowledge base and provide practical support for students and educators. PMID: 33141626 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 4, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Head motion and perception of discomfort by young children during simulated CBCT examinations.
Authors: Spin-Neto R, Hauge Matzen L, Hermann L, Fuglsig JMCES, Wenzel A Abstract OBJECTIVES: To assess the frequency and characteristics (number, complexity, and distance) of head movements, and the perception of discomfort during simulated CBCT examinations in children, considering units with different patient positioning method and head immobilization device combinations. METHODS: Forty children (20 boys/20 girls, age range 10-14 years) were video-recorded during simulated CBCT examinations. Children were randomly allocated to a sequence of five CBCT units: Newtom-5G, Orthophos-SL, Cranex-3Dx (patient standi...
Source: Dentomaxillofacial Radiology - November 1, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

From pixel to image analysis.
This article gives an overview of some of the most important developments in dental radiology. These include capturing the images, analysing and interpreting the image information and using the images for 3D reconstruction. PMID: 33119990 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 31, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

The interaction of obesity and craniofacial deformity in obstructive sleep apnea.
Authors: Huang L, Gao X Abstract OBJECTIVE: Both obesity and craniofacial deformity are important etiologies of obstructive sleep apnea (OSA). The present research aimed to explore their interaction and different impacts on OSA severity. METHODS: A total of 207 consecutive OSA patients (169 males, 38 females) were included in the research. Based on the body mass index (BMI) value, patients were divided into 77 normal-weight patients (BMI
Source: Dentomaxillofacial Radiology - October 31, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

A review of dental cone beam CT dose conversion coefficients.
CONCLUSION: The range of reported DCE values and spread with respect to field of view category suggests that DCE values that depend on FOV would provide more accurate effective dose estimates. Tube voltage was found to be a smaller factor in determining DCE. Reasonable values for DCE taking into account FOV size were obtained. There is considerable room for more work to be done to examine the behaviour of DCE with changes to patient age and dental CBCT imaging parameters. PMID: 33112658 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 29, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Is it possible to estimate volume of bone defects formed on dry sheep mandibles more practically by secondarily reconstructing section thickness of cone beam computed tomography images?
CONCLUSIONS: The section thickness values of CBCT images can be increased to a reasonable level to obtain accurate volume estimation results and save time. The SAS method can be used reliably for volume estimations of bone defects. PMID: 33035111 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 11, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Quantitative analysis of metal artifacts of dental implant in CBCT image by correlation analysis to micro-CT: A microstructural study.
CONCLUSIONS: Metal artifacts were successfully quantified using microstructural parameters in terms of the image quality of the CBCT. Changes in alpha angle affected the quality of the CBCT image. PMID: 33002369 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 2, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Ultrasound in the diagnosis of parotid duct obstruction not caused by sialolithiasis: Diagnostic value in reference to direct visualization with sialendoscopy.
Authors: Goncalves M, Mantsopoulos K, Schapher M, Iro H, Koch M Abstract OBJECTIVES: The aim of this study was toevaluate the diagnostic value of ultrasound in the obstructive pathology of the parotic gland not caused by sialolithiasis using sialendoscopy as reference standard. METHODS: Retrospective analysis of all patients who presented with suspected diagnosis of obstructive ductal pathology of the parotid gland other than sialolithiasisbetween January 2011 and December 2017. 538 patients, for a total of 691 parotid glands were included in the study. Ultrasound was performed, followed by sialendoscopy in all...
Source: Dentomaxillofacial Radiology - October 2, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Ultra-high frequency ultrasound as a clinical adjunct for imaging the oral cavity: added value of quantitative analysis.
Authors: DeJohn CR, Seshadri M PMID: 32959693 [PubMed - in process] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 23, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

2020-a year of changes.
Authors: Bornstein M, Schulze R PMID: 32959694 [PubMed - in process] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 23, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Quantitative assessment of artefacts and identification of gaps in prosthetic crowns: a comparative in vitro study between periapical radiography and CBCT images.
CONCLUSIONS: Periapical radiography was still the most cost-beneficial method for the diagnosis of maladaptation in dental restorations. CBCT exams did not improve accuracy in detecting gaps in prosthetic crowns. PMID: 32941742 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 19, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Comparison of radiographical characteristics and diagnostic accuracy of intraosseous jaw lesions on panoramic radiographs and CBCT.
Authors: Mao WY, Lei J, Lim LZ, Gao Y, Tyndall DA, Fu K Abstract OBJECTIVE: To investigate the differences in imaging characteristics and the diagnostic accuracy of 225 intraosseous jaw lesions on panoramic radiographs (PAN) versus cone beam computed tomography (CBCT). METHODS: 225 sets of PAN and CBCT images with biopsy-proven histopathological diagnoses were retrospectively compared in terms of radiographic features and diagnostic accuracy. The imaging characteristics of PAN and CBCT were independently evaluated by two oral and maxillofacial radiologists who were required to answer 12 questions and provided u...
Source: Dentomaxillofacial Radiology - September 19, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Development of a model of soft tissue simulation using ballistic gelatin for CBCT acquisitions related to dentomaxillofacial radiology research.
Authors: Nascimento EHL, Fontenele RC, Lopes PA, Santaella GM, Vasconcelos KF, de Freitas DQ, Oenning AC, Groppo FC Abstract OBJECTIVES: To present the ballistic gelatin as a new material capable of simulating the soft tissues in cone-beam CT (CBCT) images. METHODS: CBCT images of three piglet heads were acquired with their soft tissues intact (standard group). Subsequently, the piglet heads were fixed in a container using metallic pins and moulded with acrylic resin; the soft tissues were then removed and replaced by ballistic gelatin, with the same thickness of the original soft tissues. The images were evalu...
Source: Dentomaxillofacial Radiology - September 19, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Intraoperative marking of the tumour resection surface for improved radiation therapy planning in head and neck cancer: preclinical evaluation of a novel liquid fiducial marker.
CONCLUSION: SAIB/x-SAIB, which has recently become available as a Conformité Européenne (CE)-marked fiducial marker, provides an option for fast and reliable production of markers with excellent visibility in imaging modalities used in oral cancer radiation therapy (RT) planning routine. PMID: 32915672 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 12, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

In vitro comparison of two types of digital X-ray sensors for proximal caries detection validated by micro-computed tomography.
CONCLUSION: No significant difference was found for diagnostic performance of proximal caries detection between the different sensors and exposure times. The increased exposure time did not lead to a significant diagnostic benefit. PMID: 32822231 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - August 23, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Effects of healthcare policy and education on reading accuracy of bitewing radiographs for interproximal caries.
This study was approved by the Harvard Medical School Institutional Review Board (IRB). Participants graded interproximal aspects of those images and categorized the following criteria; "intact", "enamel caries 1/2 width" or "caries into dentin". The gold-standard was determined by the consensus of two HSDM full-time faculty. RESULTS: There was significant difference in the sensitivity for all three caries levels between the two groups but there was no significant difference on specificity. The positive-predictive and negative-predictive values of the USA group for the enamel caries (
Source: Dentomaxillofacial Radiology - August 17, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Assessment of Hounsfield unit in the differential diagnosis of odontogenic cysts.
Authors: Uehara K, Hisatomi M, Munhoz L, Kawazu T, Yanagi Y, Okada S, Takeshita Y, Saito EA, Asaumi J Abstract OBJECTIVES: The purpose of this study was to evaluate the usefulness of Hounsfield unit (HU) assessment with multislice-CT in the differentiation of radicular cysts (RCs), dentigerous cysts (DCs) and odontogenic keratocysts (OKCs). METHODS: In total, 307 odontogenic cysts (RCs, DCs and OKCs) were included in this study. Cysts with lesion diameter
Source: Dentomaxillofacial Radiology - August 14, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research