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

In vivo three-dimensional mandibular kinematics and functional point trajectories during temporomandibular activities using 3d fluoroscopy.
CONCLUSIONS: Similar condylar downward rotation paths but with bilaterally asymmetrical ranges were used to perform basic mandibular movements of different targeted TI trajectories in three dimensions, that is, open-close, lateral-gliding and protrusion-retraction. Mandibular rotations contributed to the majority of the principal displacement components of the incisor, that is, vertical during open-close and towards the working-side-during lateral-gliding, while mandibular translation contributed mainly to the forward movement of the incisor during protrusion-retraction. Owing to the anatomical constraints, the freedom of ...
Source: Dentomaxillofacial Radiology - August 14, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Accuracy of three-dimensional photogrammetry and cone beam computed tomography based on linear measurements in patients with facial deformities.
CONCLUSION: 3D photogrammetry showed a higher linear accuracy than CBCT in patients with facial deformities due to protuberances. Facial reconstruction by both test modalities was significantly influenced in different facial partitions, but facial deformities extensively affected the results from 3D photogrammetry. PMID: 32791014 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - August 14, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

The association between carotid calcium on dental panoramic radiographs and coronary calcium score on chest computerized tomography.
CONCLUSION: Carotid calcium identified in panoramic radiographs was associated with high coronary artery calcium. Awareness of carotid calcium recognized by dental practitioners in low-cost, low radiation and commonly done panoramic radiographs may be useful to identify patients at risk of coronary disease with potential future cardiovascular events. PMID: 32755409 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - August 13, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

The application of a gamma distribution model to diffusion-weighted images of the orofacial region.
CONCLUSIONS: Given the correlation among the diffusion-derived parameters, the GD model might be a good alternative to the IVIM model. Furthermore, the GD model's parameters were useful for characterising the pathological structure. PMID: 32706975 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - July 28, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Objective assessment of the combined effect of exomass-related- and motion artefacts in cone beam CT.
CONCLUSIONS: CBCT voxel-value parameters are altered by exomass-related artefacts, and this finding is aggravated in the presence of motion artefacts. Motion-artefact correction effectively eliminated the deleterious impact of movement. PMID: 32706986 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - July 28, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Comparison of dental and skeletal indices between patients under hemodialysis and peritoneal dialysis with healthy individualsin digital panoramic radiography.
Authors: Abdinian M, Salehi MM, Mortazavi M, Salehi H, Kazemi Naeini M Abstract OBJECTIVE: The aim was to compare dental and skeletal indices in panoramic radiography between patients undergoing hemodialysis, peritoneal dialysis, and age- and sex-matched control group. METHODS: In this comparative cross-sectional study, quantitative Indices including Antegonial Index (AI), Mental Index (MI), Panoramic Mandibular Index (PMI) and qualitative indices including Mandibular Cortical Index (MCI) and Trabecular Pattern (TP) were evaluated in panoramic imagesof 32 hemodialysis patients, 14 patients under peritoneal dial...
Source: Dentomaxillofacial Radiology - July 28, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Positioning accuracy assessment of minimally invasive percutaneous injection techniques for the treatment of temporomandibular disorders.
CONCLUSION: The guide seems to be a reliable tool for accurate percutaneous injection of drugs into the inferior compartment of the TMJ and the LPM. Further studies are necessary to test the efficacy and validate the method in an in vivo study. PMID: 32706994 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - July 28, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Applying synthetic radiography to intraoral tomosynthesis: a step towards achieving 3D imaging in the dental clinic.
CONCLUSIONS: This preliminary experience combining synthetic radiography and sIOT in extracted tooth models is encouraging and supports the ongoing study of this promising approach to 3D intraoral imaging with many potential applications. PMID: 32666823 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - July 17, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Performance of deep learning object detection technology in the detection and diagnosis of maxillary sinus lesions on panoramic radiographs.
CONCLUSION: Deep learning could reliably detect the maxillary sinuses and identify maxillary sinusitis and cysts of the maxillary sinus regions. ADVANCES IN KNOWLEDGE: This study using a deep leaning object detection technique indicated that the detection sensitivities of maxillary sinuses were high and the performance of maxillary sinus lesion identification was ≧80%.In particular, performance of sinusitis identification was ≧90%. PMID: 32618480 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - July 4, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Magnetic resonance imaging artifacts produced by dental implants with different geometries.
Authors: Bohner L, Meier N, Gremse F, Tortamano P, Kleinheinz J, Hanisch M Abstract OBJECTIVES: The purpose of this study was to evaluate the MRI-artifact pattern produced by titanium and zirconia dental implants with different geometries (diameter and height). METHODS: Three titanium (Titan SLA, Straumann) and three zirconia (Pure Ceramic Implant, Straumann) dental implants differing on their design (diameter x height) were installed in porcine bone samples. Samples were scanned with a MRI (3T, T1W turbo spin echo sequence, TR/TE 25/3.5ms, voxel size 0.22×0.22×0.50 mm, scan time 11:18). Micro-CT wa...
Source: Dentomaxillofacial Radiology - June 27, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Automatic diagnosis for cysts and tumors of both jaws on panoramic radiographs using a deep convolution neural network.
CONCLUSION: The CNN method we developed for automatically diagnosing odontogenic cysts and tumors of both jaws on panoramic radiographs using data augmentation showed high sensitivity, specificity, accuracy, and AUC despite the limited number of panoramic images involved. PMID: 32574113 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - June 24, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of windowing and metal artefact reduction algorithms on the volumetric dimensions of five different high-density materials: a cone-beam CT study.
Authors: Coelho-Silva F, Martins LAC, Braga DA, Zandonade E, Haiter-Neto F, de-Azevedo-Vaz SL Abstract OBJECTIVE: To assess the influence of windowing and metal artefact reduction (MAR) algorithms on the volumetric dimensions of high-density materials using two CBCT systems. METHODS: Four cylinders of amalgam, cobalt-chromium, gutta-percha, titanium and zirconia were manufactured and their physical volumes (PV) were measured. A polymethylmethacrylate phantom containing the cylinders was submitted to CBCT acquisitions with Picasso Trio and OP300 units with their MAR enabled and disabled. The tomographic volume (...
Source: Dentomaxillofacial Radiology - June 17, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

The way we were (and how we got here): fifty years of technology changes in dental and maxillofacial radiology.
Authors: Molteni R Abstract The history of the last 50 years (1970-2020) of technological changes and progresses for equipment and procedures in dental and maxillofacial radiology is related from the insider perspective of an industrial physicist and technologist who has been instrumental at innovating and developing medical equipment in different parts of the world. The onset and improvement of all major categories of dental and maxillofacial radiographic equipment is presented, from the standpoint of their practical acceptance and impact among common dentists and maxillofacial radiologists: X-ray sources and dete...
Source: Dentomaxillofacial Radiology - June 13, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Cone-beam computed tomography in dentomaxillofacial radiology: a two-decade overview.
CONCLUSIONS: CBCT in dentomaxillofacial radiology is a generic term applicable to a broad range of CBCT machines and features. Experimental outcomes and literature statements regarding radiation doses, imaging performance and diagnostic applicability of dental CBCT cannot be simply transferred from one CBCT model to another considering a wide variation in technical characteristics and clinical diagnostic performance. The information tabulated in the present study will be later provided in the International Association of DentoMaxilloFacial Radiology (IADMFR) website (www.iadmfr.one). PMID: 32501720 [PubMed - as supplie...
Source: Dentomaxillofacial Radiology - June 7, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Assessment of inflammatory jaw pathologies using bone SPECT-CT maximum standardized uptake value.
CONCLUSIONS: Bone SPECT-CT SUVmax in the uptake of 99mTc hydroxymethylene diphosphonate reflecting bone physiological changes for chronic osteomyelitiswere significantly higher than those of osteonecrosis, such as osteoradionecrosisand MRONJ.Bone SPECT-CT SUVmaxshould be useful for the assessment of inflammatory jaw pathologies, such as chronic osteomyelitis, osteoradionecrosis and MRONJ. PMID: 32491931 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - June 4, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Effect of computer-assisted-learning and simulation clinics on dental students' cognitive and performance skills: panoramic image errors related to patient's head position.
Authors: Wenzel A, Matzen LH, Spin-Neto R, Schropp L Abstract OBJECTIVE: To assess dental students' ability to recognize head positioning errors in panoramic (PAN) images after individual learning via computer-assisted-learning (CAL) and in a simulation clinic (SIM). Both cognitive skills and performance in patient examination were assessed. METHODS AND MATERIALS: Sixty students (mean age 23.25 years) participated in lectures on the relation between PAN-image errors and patient's head position.Immediately after they took a test, based on which they were randomized to three groups: control (CON)group, CAL group,...
Source: Dentomaxillofacial Radiology - June 4, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Prevalence of chondrocalcinosis in the temporomandibular joint in patients with chondrocalcinosis of the knee or wrist.
CONCLUSION: In patients with peripheral calcific disease, the TMJ is more commonly involved than previously reported and this is more common in females compared to males. PMID: 32479114 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - June 3, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Assessment of dental age estimation methods applied to brazilian children - a systematic review and meta-analysis.
CONCLUSION: Although originally trained in populations worldwide, most of the international methods for radiographic dental age estimation had optimal performance in Brazilian children. PMID: 32479117 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - June 3, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Does anthropomorphic model design in ex vivo studies affect diagnostic accuracy for dental root fracture using CBCT?
CONCLUSIONS: Despite the differences in X-ray attenuation between the five model designs, the results suggest that the anthropomorphic model does not affect the results of diagnostic accuracy studies on root fractureusing this CBCT machine at standard clinical exposures. This provides some confidence in the previously published evidence. The inter observer diagnosis differences indicate that research using only two observers could provide misleading results. PMID: 32479121 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - June 3, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

An investigation into dose optimisation for imaging root canal anatomy using cone beam CT.
CONCLUSIONS: In this first study to address optimisation of CBCT imaging of root canal anatomy, a similar threshold dose for both scanners was identified for M1Ms with simple-moderate MB2 canal complexity. Increasing dose to enhance visualisation of more complex canal anatomy was ineffective. Selection of standard protocols (while avoiding lower kV/mA protocols) instead of high-resolution scans was a practical means of reducing patient dose. CNR is not a transferable measure of image quality. PMID: 32464075 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 30, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Diagnostic accuracy of panoramic radiography and ultrasonography in detecting periapical lesions using periapical radiography as a gold standard.
CONCLUSIONS: Periapical and panoramic radiographs are commonly used to visualize periapical lesions. Besides, ultrasonography is an alternative method to digital radiographic techniques in the diagnosis of anterior teeth with periapical lesions. PMID: 32453610 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 28, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

A systematic review on diagnostic test accuracy of magnetic resonance neurography versus clinical neurosensory assessment for post-traumatic trigeminal neuropathy in patients reporting neurosensory disturbance.
CONCLUSION: Currently, there is insufficient scientific knowledge to support or refute the use of MRN. Based on limited data, MRN seems promising and reliable in detection and grading of PTTN. Methodological issues underline the importance for prospective blinded studies with standardization of signal intensity calculation and rigorous reporting of MRI acquisition parameters. PMID: 32401614 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 15, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Challenges in oral radiology teaching during COVID-19 pandemic.
Authors: Pontual MLA, do Nascimento EHL, da Cruz Perez DE, Pontual AA, Ramos-Perez FM PMID: 32406750 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 15, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Discovering a new anatomy: exploration of oral mucosa with ultra-high frequency ultrasound.
CONCLUSIONS: In this explorative study, we suggest a potential role for intraoral UHFUS in the study of oral mucosa, giving insights into the possibility to improve the assessment, diagnosis, and management of the conditions involving oral mucosa. UHFUS seems a promising tool, which could potentially support clinical examination in daily oral medicine practice. PMID: 32364758 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 5, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of cervical peri-implant optical density in longitudinal control of immediate implants in the anterior maxilla region.
CONCLUSION: We concluded that there was no statistically significant difference between groups I and II. Using this technique, we were able to quantitatively and qualitatively evaluate the changes in the proximal sites on the digital radiographic images for the analyzed data. Digital subtraction technology to measure peri-implant bone density is an accurate and reproducible technique for quantifying peri-implant bone reactions to different therapeutic modalities. PMID: 32364770 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 5, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Application of panoramic radiography with a multilayer imaging program for detecting proximal caries: a preliminary clinical study.
CONCLUSION: This multilayer imaging program might help the inexperienced dentist to improve the diagnostic accuracy of proximal caries. If further studies would be performed in various clinical application, it could be useful when intraoral radiography taking is difficult for reasons such as mouth-opening limitations and the gag reflex of the patients. PMID: 32348170 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - May 1, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

An extensive sclerosing odontogenic carcinoma in mandible: a case report and literature review.
In this report, we present a case of SOC involving a circuitous diagnostic process because of the inadequately detailed biopsy findings and inherent impression based on the imaging manifestations. Through an extensive literature review, the histopathological and immunohistochemical features of the disease were briefly summarized. Radiological findings of SOC have been characterized in detail, and an imaging classification scheme has been proposed to further discuss the diversity of radiographic features. Due to the rarity of the disease, a comprehensive understanding of SOC is needed, and close collaboration between clinic...
Source: Dentomaxillofacial Radiology - April 24, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Familial florid cemento-osseous dysplasia: a report of three cases and review of the literature.
This study highlights three family members with diffuse fibro-osseous jaw lesions with areas of significant expansion. In the pursuit of finding the best clinicopathological categorisation for the reported cases, familial florid cemento-osseous dysplasia and familial gigantiform cementoma were investigated. The final consensus of these three cases was that of familial florid cemento-osseous dysplasia, and one patient presented with a concurrent "ossifying fibromatoid lesion". A literature review on the above entities was performed in an attempt to provide clarification and delineate distinguishing features of the...
Source: Dentomaxillofacial Radiology - April 22, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Improved scan method for dental imaging using multidetector computed tomography: A phantom study.
CONCLUSIONS: We proposed an improved scan method resulting in a 64.2% reduction of radiation dose with one-fourth of irradiation time by combining volumetric scanning and IR technique in MDCT. PMID: 32302213 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Analysis of the deterioration of photostimulable phosphor plates.
CONCLUSION: After many X-ray exposures of the Express® PSP a singular deterioration in the mean greys values could be observed. PMID: 32302219 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Effect of differences in pixel size on image characteristics of digital intraoral radiographic systems: a physical and visual evaluation.
CONCLUSIONS: The MTF and NNPS obtained with different pixel size could be quantified by physical evaluation, and the differences were visually validated with Al step phantom. The SHR mode has the potential to decrease the radiation dose without compromising the image quality. PMID: 32302229 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Early detection treatment response for head and neck carcinomas using intravoxel incoherent motion-magnetic resonance imaging: a meta-analysis.
CONCLUSIONS: The diffusion-related coefficients pre-treatment D and △D demonstrated good accuracy in predicting early treatment response in HNSCC patients. However, because of the variability in reference test and other limitations of included literature, further investigation is needed before implementing any IVIM strategy into clinical practice. PMID: 32286860 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 15, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Establishment of national diagnostic reference levels in dental cone beam computed tomography in Switzerland.
CONCLUSIONS: Large ranges of FOV and PKA were found for a given indication, demonstrating the importance of establishing DRLs as well as FOV recommendations in view of optimizing the present practice. For now, only DRLs for dental and maxillofacial could be defined; because of a lack of ENT data, no DRL values for ENT practices could be derived from this survey. PMID: 32267774 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 10, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of a low-dose protocol for Cone-Beam computed tomography of the temporomandibular joint.
CONCLUSION: For the CBCT unit used in this study, the low-dose CBCT protocol for TMJ examination was diagnostically comparable to the manufacturer-recommended protocol, but delivered a five times lower radiation dose. There is an urgent need to evaluate protocols for CBCT examinations of TMJ in order to optimize them for a radiation dose as low as diagnostically acceptable (the ALADA principle recommended by NCRP). PMID: 32250642 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 8, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

A comparative study on image quality of two digital intraoral sensors-methodological, ethical and statistical issues.
Authors: Coelho-Silva F, Fontenele RC, de-Azevedo-Vaz SL, Freitas DQ PMID: 32250660 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - April 8, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Changing trabecular patterns in panoramic radiographs of swedish women during 25 years of follow-up.
CONCLUSION: Most changes were consistent with the notion that the bone aged less severely in the non-fracture group. In the fracture group, the findings indicate that bone loss leads to redistribution of the remaining bone tissue in such a way that the trabeculae are accentuated perpendicular to the principal loading. PMID: 32207990 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - March 26, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Application of integrated positron emission tomography/magnetic resonance imaging in evaluating the prognostic factors of head and neck squamous cell carcinoma with positron emission tomography, diffusion-weighted imaging, dynamic contrast enhancement and combined model.
This study was designed to investigate the distribution of the independent parameters of positron emission tomography (PET) and magnetic resonance (MR) in tumour differentiation and staging and to evaluate the diagnostic efficiency of the independent parameters and combined model of PET/MR in the tumour differentiation of head and neck squamous cell carcinoma (HNSCC). METHODS: The patients with the preliminary diagnosis of HNSCC were included and underwent the integrated PET/MR The parameters included the diffusion-weighted imaging (DWI), dynamic contrast enhancement (DCE) and PET. The correlations between different pa...
Source: Dentomaxillofacial Radiology - March 25, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

The role of stationary intraoral tomosynthesis in reducing proximal overlap in bitewing radiography.
CONCLUSIONS: The use of s-IOT reduced proximal contact overlap compared to standard bitewing radiography for an experienced radiographer. Stationary intraoral tomosynthesis may be a potential alternative to SBW radiography, reducing the number of retakes due to closed contacts. PMID: 32202939 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - March 25, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Peripheral nerve blocks in the cervical region: from anatomy to ultrasound-guided techniques.
Authors: Saranteas T, Kostroglou A, Efstathiou G, Giannoulis D, Moschovaki N, Mavrogenis AF, Perisanidis C Abstract Cervical plexus nerve blocks have been employed in various head and neck operations. Both adequate anaesthesia and analgesia are attained in clinical practice. Nowadays, ultrasound imaging in regional anaesthesia is driven towards a certain objective that dictates high accuracy and safety during the implementation of peripheral nerve blocks. In the cervical region, ultrasound-guided nerve blocks have routinely been conducted only for the past few years and thus only a small number of publications perv...
Source: Dentomaxillofacial Radiology - March 18, 2020 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research