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Dento Maxillo Facial Radiology

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https://www.readbyqxmd.com/read/30222021/a-comparison-of-diagnosis-of-early-stage-interproximal-caries-with-bitewing-radiographs-and-periapical-images-using-consensus-reference
#1
Noriaki Takahashi, Cliff Lee, John Daren Da Silva, Hiroe Ohyama, Motoi Roppongi, Hidemichi Kihara, Wataru Hatakeyama, Shigemi Ishikawa-Nagai, Mitsuru Izumisawa
OBJECTIVES: 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 three oral and maxillofacial radiologists, two operative faculty, and two prosthodontists evaluated the images...
September 21, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30216090/image-segmentation-based-volume-approximation-volume-as-a-factor-in-the-clinical-management-of-osteolytic-jaw-lesions
#2
Martin Kauke, Ali-Farid Safi, Andrea Grandoch, Hans-Joachim Nickenig, Joachim Zöller, Matthias Kreppel
OBJECTIVE: Size characterization of osteolytic jaw lesions (OJL), in particular of neoplastic nature, is heterogeneously performed and lacks standardization in the medical literature and clinical practice. An OJL's volume holds promise as a surrogate for treatment response and prognosis. We comparatively evaluate various methods for size characterization of odontogenic OJLs. METHODS: We retrospectively performed semiautomatic image segmentation of CBCT data sets for volume approximation of neoplastic (51) and non-neoplastic odontogenic OJLs (100)...
September 21, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30216087/evaluation-of-mallear-ligaments-in-different-voxel-resolutions-using-cone-beam-computed-tomography
#3
Cansu Gorurgoz, Kaan Orhan, Enver Alper Sinanoglu, Ismail Hakan Avsever
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 CT images of 275 patients were evaluated retrospectively. The visibility of discomallear and anterior mallear ligaments were evaluated by two observers...
September 21, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30160533/three-dimensional-imaging-methods-to-quantify-soft-and-hard-tissues-change-after-cleft-related-treatment-during-growth-in-patients-with-cleft-lip-and-or-cleft-palate-a-systematic-review
#4
Bennaree Awarun, Jorden Blok, Ruben Pauwels, Constantinus Politis, Reinhilde Jacobs
OBJECTIVES: To assess the use of three-dimensional (3D) imaging methods to quantify the changes in soft- and hard-tissues in cleft patients after cleft-related treatment during growth. METHODS: PubMed, EMBASE, Web of Science and the Cochrane Library were searched up to 1 June 2018. Included publications were those using 3D imaging to quantify soft- and hard-tissue changes after cleft-related treatments in patients with any type of cleft, during growth. Data extraction and qualitative analysis were performed by two reviewers...
September 21, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30216093/cbct-image-based-segmentation-method-for-tooth-pulp-cavity-region-extraction
#5
Lei Wang, Ju-Peng Li, Zhi-Pu Ge, Gang Li
OBJECTIVE: A method was proposed to segment the tooth pulp cavity region in cone-beam computed tomography (CBCT) images, which aimed to make the extraction process more efficient and generate more reliable results for further research. METHODS: CBCT images of fifty teeth from ten patients were randomly collected with the help of Peking University Hospital of Stomatology. All slice images have a ground truth tooth pulp cavity region delineated by two doctors manually...
September 14, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30182744/comparison-of-manual-and-dose-reduction-modes-of-a-morita-r100-cbct
#6
Dennis Rottke, Julia Dreger, Kunihiko Sawada, Kazuya Honda, Dirk Schulze
OBJECTIVES: To compare effective dose differences when acquiring (1) dose reduction mode and (2) manual mode in a MORITA R100 CBCT. METHODS: Twenty-four exposure protocols with different technique factors were performed in both the dose reduction mode and the manual mode in a Veraviewepocs 3D R100 CBCT device. Forty-eight TLD were placed in a RANDO head phantom at 24 different sites. Effective doses were calculated according to the formalism published in the 103rd ICRP report...
September 5, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30182743/ambient-dose-during-intra-oral-radiography-with-current-techniques-part-2-quantifying-the-remnant-beam-an-in-vivo-study
#7
Reinier C Hoogeveen, Christine Ch Pfältzer, Wer Berkhout
OBJECTIVES: (1) To find a safe reference transmission factor for the remnant beam to be used when assessing the remnant beam during intra-oral radiography. (2) To identify factors such as exposure type, side (left or right), gender and age that might significantly affect transmission. METHODS: Measurements were performed in the remnant beam during 323 intra-oral exposures of 43 patients. The exposure parameters were 60 kV and 7 mA. These measurements were compared with values in the same setting, but without a patient present to arrive at a transmission value...
September 5, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30028183/ambient-dose-during-intraoral-radiography-with-current-techniques-part-1-conversion-factor-for-scattered-radiation-using-a-rectangular-collimator
#8
Reinier C Hoogeveen, Tyrell I de Randamie, Gianni M Soemodihardjo, Wer Berkhout
OBJECTIVES: The aim of this study was to establish a conversion factor for assessing the scattered radiation produced during intraoral radiography with a rectangular collimator in areas where the remnant beam is not present. The dose level in the remnant beam will be addressed in another study. METHODS: A radiological phantom (Rando) in the upright position was exposed to radiation delivered by a Planmeca Intra X-ray unit over 9 exposure geometries (right side of a full mouth series)...
September 5, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30084261/beam-hardening-correction-tool-improves-the-diagnosis-of-incipient-caries-lesions-in-micro-ct-images
#9
Karla Rovaris, Saulo Leonardo Sousa Melo, Polyane Mazucatto Queiroz, Carolina Loch, Donald R Schwass, Francisco Haiter-Neto
OBJECTIVE: To evaluate the effect of Beam Hardening Correction tool (BHC) on Micro-CT images used in the diagnosis of incipient caries lesions. METHODS: Six posterior teeth, with 6 sound proximal surfaces and 6 natural white spot lesions, were scanned using a SkyScan1174 device. Each tooth was imaged 16 times in various acquisition parameters, and reconstructed 3 times applying different levels of BHC (0, 15 and 30%). The 288 datasets were analyzed by three examiners...
September 4, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30084258/intensity-of-artefacts-in-cone-beam-ct-examinations-caused-by-titanium-and-glass-fibre-reinforced-composite-implants
#10
Niina Kuusisto, Sisko Huumonen, Antti Kotiaho, Marianne Haapea, Jami Rekola, Pekka Vallittu
OBJECTIVES: The aim was to compare titanium and glass fibre-reinforced composite (FRC) orbital floor implants using cone beam CT (CBCT). FRC implants are nonmetallic and these implants have not been analysed in CBCT images before. The purpose of this study is to compare the artefact formation of the titanium and the FRC orbital floor implants in CBCT images. METHODS: One commercially pure titanium and one S-glass FRC with bioactive glass particles implant were imaged with CBCT using the same imaging values (80 kV, 1 mA, FOV 60 × 60 mm)...
September 4, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30004255/evaluation-of-jawbone-morphology-and-bone-density-indices-in-panoramic-radiographs-of-selective-serotonin-reuptake-inhibitor-users-a-preliminary-study
#11
Bhumija Gupta, Aneesha Acharya, Shilpa Singh, Stefania Brazzoli, Mohamed Ghorab, Shaima Malik, George Pelekos, Emile Rossouw
OBJECTIVES: To assess the influence of selective serotonin reuptake inhibitor (SSRI) use on jawbone and bone mineral density by retrospective analysis of panoramic radiographs. METHODS: Radiographic and clinical records were sourced from the Division of Orthodontics and TMJD, Eastman Institute for Oral Health, University of Rochester. Randomly selected adults (20-65 years) were categorized into: "Active" (with history of SSRI use of >6 months) and a "Control" group...
September 4, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30168750/low-dose-radiations-derived-from-cone-beam-ct-induce-transient-dna-damage-and-persistent-inflammatory-reactions-in-stem-cells-from-deciduous-teeth
#12
Piroska Virag, Mihaela Hedesiu, Olga Soritau, Maria Perde-Schrepler, Ioana Brie, Emoke Pall, Eva Fischer-Fodor, Loredana Bogdan, Ondine Lucaciu, Niels Belmans, Marjan Moreels, Benjamin Salmon, Reinhilde Jacobs
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 cells (DPSCs) since inaccurately repaired or unrepaired DSBs may lead to malignant transformation...
August 31, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30059235/association-of-calcified-carotid-artery-plaque-in-panoramic-images-and-diagonal-earlobe-crease
#13
Paulo Henrique Couto Souza, Soraya de Azambuja Berti-Couto, Cassiana Nathalie Machado Majewski, Isteicy Cortez da Silva, Liziane Cattelan Donaduzzi, Isabela Maria Vasconcelos Silva, Maria do Carmo Lisboa, Urie K Lee, Ida K Friedlander, Arthur H Friedlander
OBJECTIVES: Brazilians who are free of traditional atherogenic risk factors frequently suffer myocardial infarctions (MI). Calcified carotid artery plaque (CCAP) on panoramic images (PIs) has been shown to be a validated "risk indicator" of future MIs. The diagonal earlobe crease (DELC) is likewise a validated "risk indicator" of future MI. We sought to determine the prevalence of DELC+ among patients having CCAP+ on their PIs. METHODS: In a masked cross-sectional study, three dentists evaluated PIs of patients (N = 481) over age 55 for presence of CCAP+...
August 30, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30102563/comparison-of-panoramic-radiography-and-cone-beam-ct-in-the-assessment-of-juxta-apical-radiolucency-an-answer-to-letter-to-editor
#14
Eduarda Helena Leandro Nascimento, Anne Caroline Costa Oenning, Bernardo Barbosa Freire, Hugo Gaêta-Araujo, Francisco Haiter-Neto, Deborah Queiroz Freitas
No abstract text is available yet for this article.
August 13, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30102554/letter-to-editor-on-comparison-of-panoramic-radiography-and-cone-beam-ct-in-the-assessment-of-juxta-apical-radiolucency
#15
Kousar Ramezani, Maryam Foroozandeh
No abstract text is available yet for this article.
August 13, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30028185/an-systematic-review-of-e-learning-outcomes-in-undergraduate-dental-radiology-curricula-levels-of-learning-and-implications-for-researchers-and-curriculum-planners
#16
Michael G Botelho, Kalpana R Agrawal, Michael M Bornstein
OBJECTIVES: To examine the outcomes of e-learning or blended learning interventions in undergraduate dental radiology curricula and analyze the nature of the knowledge levels addressed in learning interventions. METHODS: A systematic literature review was performed using a search strategy based on MeSH key words specific to the focus question and indexed in the MEDLINE database. The search again was supplemented by hand-searching of selected journals. Data were extracted relating to outcomes of knowledge and student perceptions...
August 1, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29791199/localization-of-the-inferior-alveolar-canal-using-ultralow-dose-ct-with-iterative-reconstruction-techniques
#17
Asmaa A Al-Ekrish, Wafa Alfaleh, Romed Hörmann, Ameera Alabdulwahid, Wolfgang Puelacher, Gerlig Widmann
OBJECTIVES: To compare subjective and objective localization of the inferior alveolar canal (IAC) on multidetector CT (MDCT) images obtained by ultralow doses in combination with the reconstruction techniques of filtered backprojection (FBP), adaptive statistical iterative reconstruction (ASIR), or model-based iterative reconstruction (MBIR) as compared to standard dose MDCT and FBP. METHODS: Three cadavers were imaged with a reference standard dose MDCT examination (volume CT dose index: 29...
July 23, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30028195/use-of-tungsten-sheet-as-an-alternative-for-reducing-the-radiation-dose-behind-the-digital-imaging-plate-during-intra-oral-radiography
#18
Takehisa Nagasaka, Masahiro Izumi, Kenichi Gotoh, Tsutomu Kuwada, Yoshitaka Kise, Akitoshi Katsumata, Eiichiro Ariji
OBJECTIVES: To verify the use of tungsten sheet as an alternative to lead foil for reducing the radiation dose behind storage phosphor plates (SPPs). METHODS: At six sites (incisor, canine, and molar sites in both the maxilla and mandible) in a head phantom, radiation doses were initially measured behind conventional film packets containing two films and a lead foil. At the same sites, radiation doses were also measured behind packets containing only SPPs. Thereafter, the same dose measurements were performed with shielding materials (lead foil or tungsten sheet) within the packets...
July 20, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30028190/worth-syndrome-mandibular-osteosclerosis-as-an-incidental-finding-a-report-of-2-cases
#19
Kent S Thompson, Adepitan A Owosho
This report presents two cases of Worth syndrome involving the mandible which were identified as an incidental finding on radiologic evaluation. Both patients were females who presented with enlarged mandibles. Radiologic evaluation revealed multiple bilateral mandibular enostoses, widened and thickened inferior cortical border of the mandible, with no other major clinical finding on examination. One of the patients received orthognathic surgery and healed uneventfully with no post-surgical complications. In this report, we reviewed possible differential diagnoses to this syndrome to facilitate identification among general dentists and oral and maxillofacial radiologists...
July 20, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/30028188/multi-slice-real-time-mri-of-temporomandibular-joint-dynamics
#20
Sebastian Krohn, Arun A Joseph, Dirk Voit, Thomas Michaelis, Klaus-Dietmar Merboldt, Ralf Buergers, Jens Frahm
OBJECTIVES: The purpose of this work was to improve the clinical versatility of high-speed real-time MRI studies of temporomandibular joint (TMJ) dynamics by simultaneous recordings of multiple MRI movies in different sections. METHODS: Real-time MRI at 3 T was realized using highly undersampled radial FLASH acquisitions and image reconstruction by regularized nonlinear inversion (NLINV). Multi-slice real-time MRI of two, three or four slices at 0.75 mm resolution and 6 to 8 mm thickness was accomplished at 50...
July 20, 2018: Dento Maxillo Facial Radiology
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