Shear wave elastography in differentiating between benign and malignant cervical lymph nodes in patients with oral carcinoma.
CONCLUSIONS:: The shear wave elastography is an effective technique for the objectively and quantitatively diagnosis of cervical lymph node metastases of the oral carcinoma. PMID: 30894023 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - March 23, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Relationship between symptomatic lower limb peripheral artery disease and calcified carotid artery plaque detected on panoramic images of neurologically asymptomatic males.
CONCLUSION:: We demonstrated that CCAP, a "risk factor" for future stroke and "risk indicator" of future myocardial infarction is seen significantly more often detected on the PIs of older male patients with PAD than among those without. Dentists treating patients with PAD must be uniquely vigilant for the presence of CCAPs on their patients' PI. PMID: 30875245 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - March 17, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of cone beam CT volume orientation on alveolar bone measurements in patients with different facial profiles.
CONCLUSIONS:: CBCT-based alveolar bone width is increased when the image volume is oriented with the mandibular base parallel to the horizontal plane and dolichofacial individuals present greater alveolar bone height. PMID: 30864821 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - March 15, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Image quality optimization of a narrow detector dental computed tomography for pediatric patients.
Authors: Brasil DM, Pauwels R, Coucke W, Haiter-Neto F, Jacobs R Abstract OBJECTIVE:: Dental Cone-beam computed tomography (CBCT) exposure parameters should be optimized according to patient-specific indications, mainly for children that are most vulnerable to harmful effects of ionizing radiation. The aim of this study was to determine optimized kV settings for pediatric acquisitions for a dental CBCT device. METHODS:: Clinical and quantitative evaluations of image quality were performed using 5 and 10 years old (y/o) anthropomorphic phantoms. Technical evaluation was performed with the SEDENTEXCT-IQ phantom. ...
Source: Dentomaxillofacial Radiology - March 15, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Tooth detection and numbering in panoramic radiographs using convolutional neural networks.
CONCLUSIONS:: The performance of the proposed computer-aided diagnosis solution is comparable to the level of experts. Based on these findings, the method has the potential for practical application and further evaluation for automated dental radiograph analysis. Computer-aided teeth detection and numbering simplifies the process of filling out digital dental charts. Automation could help to save time and improve the completeness of electronic dental records. PMID: 30835551 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - March 7, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Grey value contrast sensitivity of dental practitioners in function of luminance and age.
CONCLUSION:: Age and grey value played a significant role in grey value perception by dental practitioners. PMID: 30807210 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 27, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Correlation analysis between the SUVmax of FDG-PET/CT and clinicopathological characteristics in oral squamous cell carcinoma.
Authors: Zheng D, Niu L, Liu W, Zheng C, Yan R, Gong L, Dong Z, Li K, Fei J Abstract OBJECTIVES:: To investigate the relationship between maximum standardized uptake value (SUVmax) of 18F-FDG PET/CT and clinicopathological features of oral squamous cell carcinoma (OSCC), in order to formulate a better clinical guideline. METHODS:: In 104 patients with OSCC confirmed by pathology, there were 67 males and 37 females (age, 33 - 76 years; mean age, 56 years).18F-FDG PET/CT manifestations and the clinicopathological features of the 104 patients were retrospectively analyzed. Single-factor analysis and multiple regre...
Source: Dentomaxillofacial Radiology - February 24, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Measurability and reliability of assessments of root length and marginal bone level in cone beam CT and intraoral radiography: a study of adolescents.
CONCLUSIONS:: As measurability and reliability were high for root length measurements in CBCT, this may be the method of choice for scientific analyses in orthodontics. For clinical praxis, we recommend PA following the "as low as diagnostically acceptable" principle, as clinical decisions seem to be influenced only when severe root resorption occurs. PMID: 30794436 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 24, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Spontaneously infarcted parotid tumours: MRI findings.
CONCLUSIONS:: Spontaneously infarcted parotid tumours were mostly located in the parotid tail and showed mixed signal intensities with predominant hyperintensity on T 1-weighted images. Half of the tumours had ill-defined margins, and the internal architectures varied. PMID: 30706736 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 3, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Comparison of segmented thermal images versus a CT scanning for detection of maxillofacial pathology.
Authors: Macianskyte D, Monastyreckiene E, Basevicius A, Adaskevicius R Abstract OBJECTIVES:: To evaluate thermal images (TIs) by using an algorithm for optimized Region of Interest (ROI) and image segmentation, in order to find zones of the facial skin surface with asymmetrical temperature, and to test consistency with computed tomography (CT) findings, to detect maxillofacial pathologies (i.e. tumours). METHODS:: The following steps for the TI evaluation were applied: data acquisition/pre-processing of frontal face and mouth projection, detection of face and mouth external contour, finding face and mouth symm...
Source: Dentomaxillofacial Radiology - February 3, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

An audit and service evaluation of the use of cone beam computed tomography (CBCT) in a paediatric dentistry department.
CONCLUSIONS:: There are few studies investigating the use of CBCT in paediatric dentistry and the impact of this investigation. This service evaluation shows that CBCT can play an important role in optimising paediatric patient outcomes. The need for robust staff training in CBCT referrals to prevent over prescription is demonstrated in the audit cycles. PMID: 30707638 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 3, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Simple computation of the approximated Modulation-Transfer-Function (MTF) using spreadsheet-software: method and evaluation in five maxillofacial CBCT-devices.
CONCLUSIONS:: The method introduced can be used to manually and reliably estimate a CBCTs' MTF as one central parameter for the imaging systems' performance. PMID: 30707644 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - February 3, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of stray radiation to the operator for five Hand-held dental X-ray devices.
CONCLUSIONS: : From measured air kerma values of stray radiation in the SZO, estimated annual exposures to the operator for HIDXDs are expected to be greater than from conventional wall-mounted or portable devices activated from a protected area (at a distance or behind shielding). HIDXDs should therefore only be used when patient accessibility makes their use necessary and the use of a portable device on a stand or a wall-mounted device is not reasonably feasible. This approach would keep occupational radiation exposures of dental workers as low as reasonably achievable. PMID: 30694078 [PubMed - as supplied by publish...
Source: Dentomaxillofacial Radiology - January 31, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Investigating the effect of dental implant materials with different densities on radiotherapy dose distribution using monte carlo simulation and pencil beam convolution algorithm.
CONCLUSIONS:: Dose increase for Zirconia was noted to be maximum while PEEK implant dose increase was minimum among the whole dental implant materials studied. This study revealed that the Eclipse TPS PBC algorithm could not accurately estimate the backscatter radiation from dental implant materials. PMID: 30663343 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 22, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Marginal bone loss and resorption of second molars related to maxillary third molars in panoramic images compared with CBCT.
Authors: Hermann L, Wenzel A, Schropp L, Matzen LH Abstract OBJECTIVES:: Compare findings among observers in panoramic images (PAN) and CBCT; and assess findings in PAN as indicators for marginal bone loss and resorption observed in CBCT. METHODS:: 120 impacted maxillary third molars with PAN and CBCT were included. Four observers assessed morphological features: 1)Tooth angulation; 2)Number of roots; 3)Bony impaction (yes/no) and pathology: 4)Marginal bone level at the second molar (normal/> 3 mm = bone loss); 5)Resorption in the second molar (no/superficial/ 4 mm(cyst)). Percentage accordance and κ s...
Source: Dentomaxillofacial Radiology - January 18, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

CBCT characteristics and interpretation challenges of temporomandibular joint osteoarthritis in a hand osteoarthritis cohort.
CONCLUSIONS:: TMJ changes were common in elderly with hand OA and characterized by bone productive changes. The radiologic features indicated a late stage TMJ OA. Interpretation challenges related to subtle changes were identified and are reflected by the rather low observer agreement. The diagnosis of TMJ OA should be based on evident and clear abnormalities only. PMID: 30633546 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 13, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Diagnostic abilities of 3T MRI for assessing mandibular invasion of squamous cell carcinoma in the oral cavity: comparison with 64-row multidetector CT.
Authors: Suzuki N, Kuribayashi A, Sakamoto K, Sakamoto J, Nakamura S, Watanabe H, Harada H, Kurabayashi T Abstract OBJECTIVES:: To evaluate the diagnostic accuracies of 3T MRI in evaluating mandibular invasion of squamous cell carcinoma (SCC) in the oral cavity and to compare those with that of multidetector CT (MDCT). METHODS:: 41 cases with oral SCC examined by both 3T MRI and MDCT prior to surgery were included in this study. Intravenous contrast medium was administered in all examinations. Images were evaluated for the presence or absence of mandibular invasion and mandibular canal involvement by the tumour...
Source: Dentomaxillofacial Radiology - January 13, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

A reject analysis of cone-beam computed tomographies in under-aged patients.
Authors: Jakob JWGVA, Jaqcuet W, Dierens M, Martens L Abstract OBJECTIVES:: The main objective of this study was to perform a retrospective reject analysis (or audit) of 79 CBCTs taken in under-aged patients at the Ghent University hospital over a 2 year timespan. METHODS: : Observer agreement between 2 oral radiologists and 2 senior year Master students in Paediatric Dentistry was performed for quality, diagnostic and therapeutic value. The senior year Master Students followed appropriate modules of an online course. Descriptive and comparative statistics were performed. RESULTS: : For the oral radiologist...
Source: Dentomaxillofacial Radiology - January 5, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Image quality optimization using a narrow vertical detector dental cone-beam CT.
Authors: Brasil DM, Pauwels R, Coucke W, Haiter-Neto F, Jacobs R Abstract METHODS: Clinical (CL) and quantitative (QUANT) evaluations of image quality were performed using an anthropomorphic phantom. Technical (TECH) evaluation was performed with a polymethyl methacrylate phantom. Images were obtained using a PaX-i3D Green CBCT (Vatech, Hwaseong, Korea) device, with a large 21 × 19  and a medium 12 × 9  cm field of view (FOV), and high-dose (HD-ranging from 85 to 110 kV) and low-dose (LD-ranging from 75 to 95 kV) protocols, totalling four groups (21 × 19  cm HD, 21 × 19 ...
Source: Dentomaxillofacial Radiology - January 5, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Differentiation between solitary fibrous tumors and schwannomas of the head and neck: an apparent diffusion coefficient histogram analysis.
CONCLUSIONS:: Our study suggests that skewness on ADC histograms may be the most useful diagnostic factor, followed by kurtosis and the 90th percentile ADC values, for differentiation between SFTs and schwannomas. PMID: 30604638 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 5, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

The development of new image receptor-holding instruments with appropriate horizontal X-ray beam angulation for periapical radiographs.
CONCLUSIONS:: The mean angles of the interproximal surfaces were determined from CT data. The image receptor holding-instruments were modified according to these angles to allow appropriate X-ray angulation, which facilitated improved observation of the proximal surfaces of teeth in the posterior region in this pilot in vitro study. PMID: 30604650 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - January 5, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Undetectability of oral tongue cancer on magnetic resonance imaging; clinical significance as a predictor to avoid unnecessary elective neck dissection in node negative patients.
Authors: Baba A, Okuyama Y, Ikeda K, Kozakai A, Suzuki T, Saito H, Ogane S, Yamazoe S, Yamauchi H, Ogino N, Seto Y, Kobashi Y, Mogami T, Ojiri H Abstract METHODS:: We retrospectively reviewed early stage oral tongue cancer patients treated with radical surgery with clinically N0, between May 2009 and February 2016. Collected data include age, sex, pathological DOI, DOI on MRI, locoregional control rate, disease-free survival rate, and overall survival rate. These data were statistically compared between the detectable lesion (DL) group and undetectable lesion (UL) group on MRI. Interobserver agreement in evaluation...
Source: Dentomaxillofacial Radiology - January 5, 2019 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of scan mode (partial/full rotations) and FOV size in the formation of artefacts in cone beam computed tomography.
CONCLUSION:: As there were no significant differences in the amount of artefacts in rotation protocols for large FOVs, the partial rotation can be indicated due to its lower exposure to radiation. For acquiring images with restricted FOVs, the full rotation is recommended. PMID: 30563362 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 21, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Can a high-density dental material affect the automatic exposure compensation of digital radiographic images?
CONCLUSIONS:: In general, the presence of a high-density dental material in digital radiographic systems influences the AEC by adjusting dental tissue-equivalent grey values. PMID: 30540916 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 14, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Are metal artefact reduction algorithms effective to correct cone beam CT artefacts arising from the exomass?
In conclusion, MAR was not effective to correct CBCT artefacts arising from metallic objects in the exomass in the two CBCT units used. PMID: 30540919 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 14, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Re-exposure in cone beam computed tomography of the dentomaxillofacial region: a retrospective study.
CONCLUSION:: Gender and age did not have an impact on the occurrence of re-exposures. Patients who received a scan with the small field-of-view CBCT were significantly more often rescanned than those with the large-field-of-view CBCT. PMID: 30540920 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 14, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Application of fused image in detecting abnormalities of temporomandibular joint.
CONCLUSIONS:: The CT/CBCT and MR images could be fused to aid detection of TMJ anatomical structures and related lesions. PMID: 30495970 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - December 1, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Ultrasonography is sufficient for evaluation of mental foramen?
Authors: Caglayan F, Sumbullu MA, Akgul HM Abstract METHODS: The measurements were established on 60 MFs of 30 patients (16 males, 14 females) with a mean age of 30.70± 9,23 years. The vertical and the horizontal diameters, distance to the alveolar crest of the MF was measured by both CBCT and USG. Results obtained with CBCT and USG were statistically compared. And also the blood flow of the MF determined by Doppler USG. RESULTS: All of the MFs could be detected by CBCT and USG. The vertical and the horizontal diameter measurements were compatible with each other by CBCT and USG. However, the distance to...
Source: Dentomaxillofacial Radiology - November 15, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Assessment of image quality and exposure parameters of an intraoral portable X rays device.
CONCLUSION:: The DIOX intraoral portable radiography device demonstrated reliability in relation to the quality control and radioprotection criteria, according to international standards. Results obtained demonstrated the safe use of the DIOX intraoral portable radiography device and indicated the need for debate and change in international sanitary oversight standards regarding the use of portable XR devices in dentistry. PMID: 30426762 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 15, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Differential diagnostic value of diffusion-weighted and dynamic contrast-enhanced MR imaging in non-cystic lesions in floor of the mouth.
Authors: Yuan Y, Jiang M, Wu L, Tao X Abstract OBJECTIVES:: To evaluate the potential use of diffusion-weighted imaging (DWI) and dynamic contrast-enhanced MRI (DCE-MRI) in the differential diagnosis of non-cystic lesions in the floor of the mouth (FOM). METHODS:: A total of 82 patients were included in this study. The apparent diffusion coefficient (ADC) values and time-signal intensity curves (TICs) were measured. Clinical characteristics, ADC value, and TIC pattern were compared between benign and malignant FOM lesions. Receiver operating characteristic (ROC) curve and logistic regression analyses were perfo...
Source: Dentomaxillofacial Radiology - November 15, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Dimensional accuracy of cone beam CT with varying angulation of the jaw to the X-ray beam.
This study aimed to investigate the influence of the position/angulation of the mandible relative to the X-ray beam of a CBCT machine. METHODS: Five sequential CBCT scans were captured of a human mandible at each angulation of 10°, 20°, 30°, and 40° using a coronal and sagittal positioning. Inspection software utilized a best-fit alignment to automatically calculate the three-dimensional variation at 15 standardized points of interest. RESULTS: Statistically significant differences were found between the dimensional accuracy of CBCT scans taken at 10° (26.3 µm) of coronal angulation, as we...
Source: Dentomaxillofacial Radiology - November 9, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

An ex-vivo comparative study of occlusal and proximal caries using terahertz and X-ray imaging.
CONCLUSION:: Terahertz pulsed imaging was found to be successful for the detection of dental caries ex vivo. PMID: 30379560 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 2, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Marker-based watershed transform method for fully automatic mandibular segmentation from CBCT images.
CONCLUSIONS:: The marker-based watershed transform method produces segmentation accuracy comparable to the well-accepted interactive segmentation approach. PMID: 30379569 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 2, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

A deep-learning artificial intelligence system for assessment of root morphology of the mandibular first molar on panoramic radiography.
CONCLUSIONS:: The deep learning system showed high accuracy in the differential diagnosis of a single or extra root in the distal roots of mandibular first molars. PMID: 30379570 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - November 2, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Kerma area product (KAP) and scatter measurements for intraoral X-ray machines using three different types of round collimation compared with rectangular beam limiter.
CONCLUSION:: Although, US FDA regulations allow a maximum beam size of 38.5 cm2 on the patient skin, this study suggests that the use of rectangular collimators provide clinically relevant dose reduction for patients, even when using smaller round collimation, hence the use of rectangular collimation for all intraoral radiographic procedures is highly recommended. PMID: 30346798 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 23, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Prevalence of radiographic findings on jaws exposed to antiresorptive therapy: a meta-analysis.
CONCLUSIONS:: RF prevalence was high and mainly included mixed lytic-sclerotic areas, osteolysis, osteosclerosis, cortical bone erosion, persisting alveolar socket, PDL-widening, IAC-involvement. Due to the very low level of evidence (GRADE) caution should be exercised when considering these findings. PMID: 30346802 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 23, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Imaging the bifid mandibular canal using high resolution MRI.
CONCLUSIONS:: The incidence rate of BMC per MRI was 6.4% in this study. NCs, including the retromolar canal, had an incidence rate of 58.4-97.6%. Further, BMCs were not verified by PR or CT, indicating that MRI should be used to assess BMCs. PMID: 30346803 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 23, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Digital panoramic radiography and cone-beam computed tomography as ancillary tools to detect low bone mineral density in postmenopausal women.
CONCLUSIONS:: The MCI calculated by DPR and CBCT differed with regard to accuracy. Within the limitations of this study, the PR of CBCT with 25 mm slice thicknesses seems to be the most accurate among the exams evaluated. Should the dentist be attentive, DPR and CBCT may be useful tools for the screening of low BMD in postmenopausal women, facilitating their timely referral for further assessment. PMID: 30306800 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 13, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Effect of laterality, gender, age and body mass index on the fat fraction of salivary glands in healthy volunteers: assessed using iterative decomposition of water and fat with echo asymmetry and least-squares estimation method.
CONCLUSIONS:: FFs of PG and SMG were age- and BMI- dependent, but not laterality- and gender-dependent. The effect of age and BMI need to be considered in further studies using Ideal-IQ technology to evaluate FFs of salivary gland diseases. PMID: 30306806 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 13, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of the dental spectral cone beam CT for metal artifact reduction.
CONCLUSIONS:: Virtual monochromatic imaging by SCBCT reduces the metal artifact and improves the image CNR around dental metallic fillings. This kind of imaging would be recommended for patients with dental metallic fillings. PMID: 30299983 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 10, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Diagnostic ultrasound assessment of temporomandibular joints: a systematic review and meta-analysis.
CONCLUSION:: This systematic review demonstrated the US has acceptable capability to screen for DD and JE in TMD patients. For screening of condylar changes, US needs further studies using CT or CBCT as reference standard to support its use. More advanced imaging such as MRI can thereafter be used to confirm the diagnosis if deemed necessary. PMID: 30285469 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 6, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evidence of genotoxicity and cytotoxicity of X-rays in the oral mucosa epithelium of adults subjected to cone-beam computed tomography.
Authors: Ribeiro D PMID: 30285478 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - October 6, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Influence of vista scan image enhancement filters on diagnosis of simulated periapical lesions on intraoral radiographs.
CONCLUSION:: VistaScan enhancement filters do not influence the diagnostic accuracy of simulated periapical lesions. On the other hand, larger lesions were more frequently detected. The filters change the pixel intensities reducing or intensifying the differences between similar regions. PMID: 30260235 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 29, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

A comparison of diagnosis of early stage interproximal caries with bitewing radiographs and periapical images using consensus reference.
Authors: Takahashi N, Lee C, Da Silva JD, Ohyama H, Roppongi M, Kihara H, Hatakeyama W, Ishikawa-Nagai S, Izumisawa M Abstract OBJECTIVE: The purpose of this study was to assess the diagnostic property of intraoral bitewing radiographs (BTW) for early stage interproximal caries, and to compare them with periapical radiographs (PA) at different levels of caries progression. METHODS: A total of 241 interproximal surfaces of BTW and corresponding PAs were used. Seven teaching faculty consisting of 3 oral and maxillofacial radiologists, 2 operative faculty, and 2 prosthodontists evaluated the images. The observers ...
Source: Dentomaxillofacial Radiology - September 19, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Evaluation of mallear ligaments in different voxel resolutions using cone beam computed tomography.
Authors: Gorurgoz C, Orhan K, Sinanoglu EA, Avsever IH Abstract OBJECTIVES: The aim of this study was to assess the visibility of discomallear ligament and anterior mallear ligament together with anatomical morphometric measurements of petrotympanic fissure, and to determine whether the mallear ligaments correlate with the bone compartment changes of temporomandibular joint. METHODS: Cone Beam Computed Tomography images of 275 patients were evaluated retrospectively. The visibility of discomallear and anterior mallear ligaments were evaluated by two observers. The petrotympanic fissure was classified into 4 gro...
Source: Dentomaxillofacial Radiology - September 16, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Image segmentation based volume approximation-volume as a factor in the clinical management of osteolytic jaw lesions.
CONCLUSION: Segmentation based volume approximation holds great promise for patient individualized treatment planning and clinical management. The data suggest that maximum tumor diameter-based size characterization, especially the cuboid-formula and the maximum diameter alone, should not be recommended. PMID: 30216090 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 16, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

CBCT image based segmentation method for tooth pulp cavity region extraction.
CONCLUSION: The proposed method can extract tooth pulp cavity regions from teeth efficiently. The segmentation results of this method are more accurate compared to other popular methods under different circumstances and can be used for subsequent applications. PMID: 30216093 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 16, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Ambient dose during intra-oral radiography with current techniques: Part 2 quantifying the remnant beam - an in vivo study.
CONCLUSIONS: A transmission factor of 5% could be used to assess the remnant beam during intra-oral radiography. Anterior exposures led to significantly lower transmission values than posterior exposures. PMID: 30182743 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 6, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Comparison of manual and dose reduction modes of a MORITA R100 CBCT.
CONCLUSIONS: The estimated effective doses are significantly lower if dose reduction protocols are acquired. PMID: 30182744 [PubMed - as supplied by publisher] (Source: Dentomaxillofacial Radiology)
Source: Dentomaxillofacial Radiology - September 6, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research

Low-dose radiations derived from cone-beam CT induce transient DNA damage and persistent inflammatory reactions in stem cells from deciduous teeth.
Authors: Virag P, Hedesiu M, Soritau O, Perde-Schrepler M, Brie I, Pall E, Fischer-Fodor E, Bogdan L, Lucaciu O, Belmans N, Moreels M, Salmon B, Jacobs R Abstract OBJECTIVES: Cone-beam CT (CBCT), a radiographic tool for diagnosis, treatment, and follow-up in dental practice, was introduced also in pediatric radiology, especially orthodontics. Such patients subjected to repetitive X-rays examinations may receive substantial levels of radiation doses. Ionizing radiation (IR), a recognized carcinogenic factor causing DNA double-strand breaks (DSBs) could be harmful to undifferentiated cells such as dental pulp stem ce...
Source: Dentomaxillofacial Radiology - September 2, 2018 Category: Radiology Tags: Dentomaxillofac Radiol Source Type: research