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https://www.readbyqxmd.com/read/28938334/the-morphological-grading-and-comparison-of-sutural-patency-among-cranial-sutures-in-dry-human-skulls
#1
Sibel Cirpan, Abdurrahman Orhan Magden, Nuket Gocmen Mas, Mete Edizer, Funda Aksu, Goksin Nilufer Yonguc
OBJECTIVE: To investigate the degree of fusion (patency) among cranial sutures in human dry skulls in the Anatolia. METHODS: One-hundred fifty-eight human dry skulls that were accepted as adults according to the teeth eruption were macroscopically examined and photographed with Canon 400B (55 mm objective). The grades of fusion of coronal, sagittal, and lambdoid were quantitatively analyzed by using the modified grading scale. According to the extent of patency, the sutures were graded as grade-0 (open), grade-1 (fused but not obliterated), grade-2 (50%< obliterated), grade-3 (50% > obliterated), and grade-4 (100% obliterated)...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28937901/pulp-calcification-in-traumatized-primary-teeth-classification-clinical-and-radiographic-aspects
#2
Anna Carolina Volpi Mello-Moura, Ana Maria Antunes Santos, Gabriela Azevedo Vasconcelos Cunha Bonini, Cristina Giovannetti Del Conte Zardetto, Cacio Moura-Netto, Marcia Turolla Wanderley
OBJECTIVE: The aim of this study was to standardize the nomenclature of pulp alteration to pulp calcification (PC) and to classify it according to type, quantity and location, as well as relate it to clinical and radiographic features. STUDY DESIGN: The dental records of 946 patients from the Research and Clinical Center for Dental Trauma in Primary Teeth were studied. Two hundred and fifty PC-traumatized upper deciduous incisors were detected. RESULTS: According to radiographic analysis of the records, 62...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28937532/prevalence-risk-factors-and-characteristics-of-the-adding-on-phenomenon-in-idiopathic-scoliosis-after-correction-surgery-a-systematic-review-and-meta-analysis
#3
Mingyuan Yang, Yuechao Zhao, Xin Yin, Ziqiang Chen, Changwei Yang, Li Li, Ming Li
STUDY DESIGN: A systematic review and meta-analysis OBJECTIVE.: To discuss the prevalence, risk factors and characteristics of the 'adding-on' phenomenon in idiopathic scoliosis (IS). SUMMARY OF BACKGROUND DATA: There are controversies on the prevalence and risk factors of the 'adding-on' phenomenon. In addition, there is no comprehensive study to describe the characteristics of 'adding-on' in IS patients. METHODS: We performed a systematic online search using PubMed, EMBASE, Web of Science, the Cochrane Library and China WeiPu Library to identify eligible studies...
September 20, 2017: Spine
https://www.readbyqxmd.com/read/28936288/a-comparative-evaluation-of-smear-layer-removal-using-apical-negative-pressure-endovac-sonic-irrigation-endoactivator-and-er-yag-laser-an-in-vitro-sem-study
#4
Sanghamitra Suman, Promila Verma, Aseem Prakash-Tikku, Rhythm Bains, Vijay Kumar-Shakya
BACKGROUND: This study aimed to compare the smear layer removing efficacy of the EndoActivator, EndoVac and Er:YAG laser in extracted mandibular premolars, at the apical, middle and coronal third of root canal, through scanning electron microscopy. MATERIAL AND METHODS: 40 extracted mandibular premolars were decoronated to a standardized length of 12 mm. Specimens were shaped to ProTaper F4 size and irrigated with 5.25% sodium hypochlorite at 370C between instrumentation...
August 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28935625/topographic-diagnosis-of-craniopharyngiomas-the-accuracy-of-mri-findings-observed-on-conventional-t1-and-t2-images
#5
R Prieto, J M Pascual, L Barrios
BACKGROUND AND PURPOSE: The topography of craniopharyngiomas has proved fundamental in predicting the involvement of vital brain structures and the possibility of achieving a safe radical resection. Beyond the imprecise term "suprasellar," indiscriminately used for craniopharyngiomas, an accurate definition of craniopharyngioma topography should be assessed by preoperative MR imaging. The objective of this study was to investigate the MRI findings that help define craniopharyngioma topography...
September 21, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28935534/neurosurgical-microscopic-solid-laser-based-light-inhibits-photobleaching-during-fluorescence-guided-brain-tumor-removal-with-5-aminolevulinic-acid
#6
Fumitaka Matsuda, Naokado Ikeda, Yoshinaga Kajimoto, Naosuke Nonoguchi, Koji Takeuchi, Masao Fukumura, Shinji Kawabata, Motomasa Furuse, Tetsuo Sugano, Taku Sato, Kiyoshi Saito, Toshihiko Kuroiwa
BACKGROUND: Fluorescence image guided surgery (FIGS) with 5-aminolevulinic acid for malignant gliomas improves surgical outcome. One of the problems during FIGS is photobleaching under surgical microscopic white light. A solid laser-based white light source for neurosurgery that we developed does not include light with a wavelength of around 405nm, which is strongly absorbed by protoporphyrin IX. In the present study, we examined the efficacy of this light source to prevent the photobleaching of protoporphyrin IX-induced fluorescence...
September 18, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28935238/biphasic-aspect-of-sexually-dimorphic-ontogenetic-trajectory-of-gyrification-in-the-ferret-cerebral-cortex
#7
K Sawada, I Aoki
The present study characterized quantitatively sexual dimorphic development of gyrification by MRI-based morphometry. High spatial-resolution 3D MR images (using RARE sequence with short TR and minimum TE setting) were acquired from fixed brain of male and female ferrets at postnatal days (PDs) 4 to 90 using 7-tesla preclinical MRI system. The gyrification index was evaluated either throughout the cerebral cortex (global GI) or in representative primary sulci (sulcal GI). The global GI increased linearly from PD 4, and reached a peak at PD 42, marking 1...
September 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28933560/unintentional-nontraffic-injury-and-fatal-events-threats-to-children-in-and-around-vehicles
#8
Mark R Zonfrillo, Mackenzie L Ramsay, Janette E Fennell, Amber Rollins
Objective There have been substantial reductions in motor vehicle crash-related child fatalities due to advances in legislation, public safety campaigns, and engineering. Less is known about nontraffic injuries and fatalities to children in and around motor vehicles. The objective of this study was to describe the frequency of various nontraffic incidents, injuries, and fatalities to children using a unique surveillance system and database. Methods Instances of nontraffic injuries and fatalities in the United States to children 0-14 years were tracked from January 1990 - December 2014 using a compilation of sources including media reports, individual accounts from families of affected children, medical examiner reports, police reports, child death review teams, coroner reports, medical professionals, legal professionals, and other various modes of publication...
September 21, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28932703/imaging-in-traumatic-mandibular-fractures
#9
REVIEW
Adil Naeem, Hugo Gemal, Duncan Reed
A fracture of the mandible is a common trauma presentation amongst young males and represents one of the most frequently encountered fractured bones within the viscerocranium. Historically, assault was the dominant contributing factor but now due to the increased number of vehicles used per capita, motor vehicle accidents are the primary cause. Mandibular fractures can be classified anatomically, by dentition, by muscle group and by severity. The fracture may also be closed, open, comminuted, displaced or pathological...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28932151/influence-of-irrigating-agents-on-fiber-postpush-out-bond-strength-to-radicular-dentin-sections-with-the-different-adhesive-system
#10
Satheesh B Haralur, Asim Nasser A Alasabi, Sultan A Abohathrah Al Qahtani, Saeed Musleh S Alqahtani
OBJECTIVE: The objective of this study is to evaluate the effect of irrigating agents on push-out bond strength of resin postcemented with various adhesive systems at different radicular dentin sections. MATERIALS AND METHODS: Sixty single-rooted premolar teeth were root canal treated, subsequently decorated at cementoenamel junction. The endodontic postspace was irrigated with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) for Group A (n = 30) and Group B (n = 30), respectively...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28928676/effects-of-immune-activation-during-early-or-late-gestation-on-n-methyl-d-aspartate-receptor-measures-in-adult-rat-offspring
#11
Tasnim Rahman, Katerina Zavitsanou, Tertia Purves-Tyson, Lauren R Harms, Crystal Meehan, Ulrich Schall, Juanita Todd, Deborah M Hodgson, Patricia T Michie, Cyndi Shannon Weickert
BACKGROUND: Glutamatergic receptor [N-methyl-d-aspartate receptor (NMDAR)] alterations within cortex, hippocampus, and striatum are linked to schizophrenia pathology. Maternal immune activation (MIA) is an environmental risk factor for the development of schizophrenia in offspring. In rodents, gestational timing of MIA may result in distinct behavioral outcomes in adulthood, but how timing of MIA may impact the nature and extent of NMDAR-related changes in brain is not known. We hypothesize that NMDAR-related molecular changes in rat cortex, striatum, and hippocampus are induced by MIA and are dependent on the timing of gestational inflammation and sex of the offspring...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28928264/role-of-ultrasound-biomicroscopy-in-diagnosis-of-ocular-toxocariasis
#12
Qian Chen, Junxiang Gu, Rui Jiang, Min Zhou, Qing Chang
PURPOSE: To investigate ultrasound biomicroscopy (UBM) characteristics of patients with ocular toxocariasis (OT) and to explore the role of UBM in the diagnosis and differential diagnosis of OT. DESIGN: Cross-sectional study. METHODS: 78 eyes of 77 patients clinically consistent with OT and confirmed by serum and/or intraocular antibodies in a single tertiary centre (Fudan University Eye and ENT Hospital, Shanghai) between July 2009 and July 2016 were included in the study...
September 19, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28927560/patient-variation-limits-use-of-fixed-references-for-femoral-rotation-component-alignment-in-total-knee-arthroplasty
#13
Joshua G Twiggs, David M Dickison, Elizabeth C Kolos, Caitlin E Wilcox, Justin P Roe, Brett A Fritsch, Stephen J McMahon, Brad P Miles, Andrew J Ruys
BACKGROUND: Optimal rotational alignment of the femoral component is a common goal during total knee arthroplasty. The posterior condylar axis (PCA) is thought to be the most reproducible reference in surgery, while the transepicondylar axis (TEA) seems to better approximate the native kinematic flexion axis. This study sought to determine if rules based on patient gender or coronal alignment could allow reliable reproduction of the TEA from the PCA. METHODS: Three-dimensional models based on preoperative computed tomography were made representing a patient's arthritic knee joint...
August 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28926392/flexible-adult-acquired-flatfoot-deformity-comparison-between-weight-bearing-and-non-weight-bearing-measurements-using-cone-beam-computed-tomography
#14
Cesar de Cesar Netto, Lew C Schon, Gaurav K Thawait, Lucas Furtado da Fonseca, Apisan Chinanuvathana, Wojciech B Zbijewski, Jeffrey H Siewerdsen, Shadpour Demehri
BACKGROUND: The 3-dimensional nature of adult acquired flatfoot deformity can be challenging to characterize using radiographs. We tested the hypothesis that measurements on weight-bearing (WB) cone-beam computed tomography (CT) images were more useful for demonstrating the severity of the deformity than non-weight-bearing (NWB) measurements. METHODS: We prospectively enrolled 12 men and 8 women (mean age, 52 years; range, 20 to 88 years) with flexible adult acquired flatfoot deformity...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28924356/reproducibility-of-schatzker-classification-through-smartphone-applications
#15
Mauro Rodrigues Dos Santos, Junichiro Sado, Roberto Medeiros de Sousa, Osman Rodrigues Roriz
OBJECTIVE: To evaluate the intra-observer reproducibility of Schatzker classification for tibial plateau fractures through smartphone applications. METHODS: Radiographs were evaluated in two incidences (anteroposterior and profile) and CT slices (axial, sagittal and coronal) of 37 patients with tibial plateau fracture. Two evaluators, knee surgery experts, classified the cases by viewing the images of the isolated radiographs and then X-rays associated with CT slices in four different stages via smartphones and then presential assessment...
November 2016: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28921600/injury-patterns-sustained-in-fatal-motor-vehicle-collisions-with-driver-s-third-generation-airbag-deployment
#16
Mariya Kuk, Michael J Shkrum
The Office of the Chief Coroner for Ontario database for 2011-2012 was used to compare fatal injury patterns in drivers whose third-generation airbags deployed compared to first- and second-generation airbag deployments and airbag nondeployments with and without seatbelt use. There were 110 frontal and offset frontal crashes analyzed. The small sample size meant that the odds of craniocerebral, cervical spinal, thoracic, and abdominal injuries were not statistically different for airbag generation, deployment status, and seatbelt use; however, the risk of fatal thoracic injuries in third- and second-generation cases was increased...
September 15, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28920794/intraocular-pressure-and-examination-findings-in-three-species-of-central-and-south-american-tree-frogs-cruziohyla-craspedopus-cruziohyla-calcarifer-and-anotheca-spinosa
#17
Andrew C Lewin, Jennifer C Hausmann, Paul E Miller
The purpose of this prospective study was to describe intraocular pressure (IOP) and examination findings in three tree frog species (Cruziohyla craspedopus [fringe leaf frog], Cruziohyla calcarifer [splendid leaf frog], and Anotheca spinosa [spiny-headed or coronated tree frog]). Thirty-one C. craspedopus, four C. calcarifer, and five A. spinosa were weighed, sexed based on phenotype where possible, and examined using slit-lamp biomicroscopy and indirect ophthalmoscopy. IOP was measured using the TonoVet and TonoLab rebound tonometers while the frogs were held two ways (unrestrained, then restrained)...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920140/frequency-location-and-association-with-dental-pathology-of-mucous-retention-cysts-in-the-maxillary-sinus-a-radiographic-study-using-cone-beam-computed-tomography-cbct
#18
Andy Wai Kan Yeung, Ray Tanaka, Pek-Lan Khong, Thomas von Arx, Michael M Bornstein
OBJECTIVES: The purpose of the present study was to evaluate the frequency, locations, and dimensions of mucous retention cysts of the maxillary sinus and analyze potential associated dental pathology. MATERIALS AND METHODS: A total of 156 cone beam computed tomography (CBCT) scans were included in the analysis, resulting in an evaluation of 310 maxillary sinuses. The presence of mucous retention cysts (MRC) manifesting as dome-shaped radiopacities in the sinus was diagnosed...
September 17, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28919161/magnetic-resonance-elastography-of-the-brain-a-comparison-between-pigs-and-humans
#19
Johannes Weickenmeier, Mehmet Kurt, Efe Ozkaya, Max Wintermark, Kim Butts Pauly, Ellen Kuhl
Magnetic resonance elastography holds promise as a non-invasive, easy-to-use, in vivo biomarker for neurodegenerative diseases. Throughout the past decade, pigs have gained increased popularity as large animal models for human neurodegeneration. However, the volume of a pig brain is an order of magnitude smaller than the human brain, its skull is 40% thicker, and its head is about twice as big. This raises the question to which extent established vibration devices, actuation frequencies, and analysis tools for humans translate to large animal studies in pigs...
August 26, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28918234/a-fatal-review-exploring-how-children-s-deaths-are-reported-in-the-united-states
#20
Brianne M Posey, Melanie-Angela Neuilly
Child death reports are the leading data source used to orchestrate child fatality prevention policy. Therefore, the way in which child death is reported is crucial to how we sustain life. We sought to assess the systematic ways in which death is reported for children. Based on a qualitative analysis of medico-legal investigation reports collected from a medical examiner's office and a coroner's office, we examined several indicators of data completeness, quality, site organizational structure, and consistency...
September 14, 2017: Child Abuse & Neglect
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