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https://www.readbyqxmd.com/read/28097666/understanding-external-cervical-resorption-patterns-in-endodontically-treated-teeth
#1
M Mavridou, E Hauben, M Wevers, E Schepers, L Bergmans, P Lambrechts
AIM: To understand the pattern of external cervical resorption (ECR) in endodontically treated teeth. To compare characteristics and mechanisms of ECR in root filled teeth with those established in teeth with vital pulps. METHODOLOGY: Seven cases of endodontically treated permanent teeth displaying ECR were investigated. ECR diagnosis was based on clinical findings and radiographic examination with cone-beam computed tomography (CBCT). The extracted teeth were further analysed by a nano-focus computed tomographic (nano-CT) system, hard tissue histology and scanning electron microscopy (SEM)...
January 18, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28091721/influence-of-tooth-dimension-on-the-initial-mobility-based-on-plaster-casts-and-x-ray-images-a-numerical-study
#2
Martin Hartmann, Cornelius Dirk, Susanne Reimann, Ludger Keilig, Anna Konermann, Andreas Jäger, Christoph Bourauel
AIMS: The goal was to determine the influence of different geometric parameters of the tooth on the initial tooth mobility and the position of the center of resistance employing numerical models based on scaled X-ray images and plaster casts. METHODS: The dimensions of tooth 21 were measured in 21 patients, using radiographs and dental casts. Length and mesiodistal width of the tooth were obtained from the X-ray image and the orovestibular diameter from the plaster cast...
January 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28090032/the-influence-of-elastic-moduli-of-core-materials-on-shear-stress-distributions-at-the-adhesive-interface-in-resin-built-up-teeth
#3
Ayaka Chiba, Takashi Hatayama, Kimisuke Kainose, Masatoshi Nakajima, David H Pashley, Noriyuki Wakabayashi, Junji Tagami
This study aimed to investigate shear stress distributions in resin built-up teeth using resin composites of varying elastic moduli (E), with or without fiber posts. Three-dimensional mathematical models of a root-filled mandibular premolar tooth were constructed. Resin post and cores were built-up with resin composites of three different E: 12,000, 18,000 and 24,000 MPa, with or without fiber posts. Finite element linear analysis was performed to calculate shear stress distributions at bonding interface between resin core and dentin...
January 13, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28073391/magnetic-resonance-myelography-in-congenital-absence-of-the-cervical-pedicle
#4
Rami Alhazmi, Jean-Pierre Farmer, Christine Saint-Martin
Absence of the cervical pedicle is a very rare congenital anomaly, easily misrecognized as a unilateral facet dislocation in a setting of acute trauma or a neoplastic process like a nerve sheath tumor. Although correct diagnosis can be achieved on the cervical radiograph and confirmed by the CT, MRI Myelography is clearly of additional value because shows the specific relationship and orientation of the nerve roots. To the best to our knowledge, this is the first description of MR Myelography findings.
January 11, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28068293/a-hybrid-bmi-based-exoskeleton-for-paresis-emg-control-for-assisting-arm-movements
#5
Toshihiro Kawase, Takeshi Sakurada, Yasuharu Koike, Kenji Kansaku
OBJECTIVE: Brain-machine interface (BMI) technologies have succeeded in controlling robotic exoskeletons, enabling some paralyzed people to control their own arms and hands. We have developed an exoskeleton asynchronously controlled by EEG signals. In this study, to enable real-time control of the exoskeleton for paresis, we developed a hybrid system with EEG and EMG signals, and the EMG signals were used to estimate its joint angles. APPROACH: Eleven able-bodied subjects and two patients with upper cervical spinal cord injuries (SCIs) performed hand and arm movements, and the angles of the metacarpophalangeal (MP) joint of the index finger, wrist, and elbow were estimated from EMG signals using a formula that we derived to calculate joint angles from EMG signals, based on a musculoskeletal model...
January 9, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28065860/influence-of-ultrasonic-activation-over-final-irrigants-in-the-removal-of-photosensitizer-from-root-canal-walls-after-photodynamic-therapy
#6
Matheus Albino Souza, Bianca Pazinatto, Karolina Frick Bischoff, Huriel Scartazzini Palhano, Doglas Cecchin, José Antônio Poli de Figueiredo
INTRODUCTION: The aim of the present study was to evaluate the influence of ultrasonic activation (US) of the final irrigant in the removal of the photosensitizer from root canal walls after photodynamic therapy. METHODS: The root canals of 60 single-rooted bovine extracted teeth were filled with 0.01% methylene blue and submitted to photodynamic therapy for 90seconds. After that, the roots were divided into six groups (n=10) according to the final irrigation protocol: distilled water (DW), DW+US, 17% EDTA, QMix, EDTA+US, and QMix+US...
January 5, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28060526/effects-of-dual-monitor-computer-work-versus-laptop-work-on-cervical-muscular-and-proprioceptive-characteristics-of-males-and-females
#7
Amanda M Farias Zuniga, Julie N Côté
OBJECTIVE: The effects of performing a 90-minute computer task with a laptop versus a dual monitor desktop workstation were investigated in healthy young male and female adults. BACKGROUND: Work-related musculoskeletal disorders are common among computer (especially female) users. Laptops have surpassed desktop computer sales, and working with multiple monitors has also become popular. However, few studies have provided objective evidence on how they affect the musculoskeletal system in both genders...
December 1, 2016: Human Factors
https://www.readbyqxmd.com/read/28057652/study-protocol-for-a-randomised-controlled-multicentre-study-the-foraminotomy-acdf-cost-effectiveness-trial-facet-in-patients-with-cervical-radiculopathy
#8
A E H Broekema, J M A Kuijlen, G A T Lesman-Leegte, R H M A Bartels, A D I van Asselt, P C A J Vroomen, J M C van Dijk, M F Reneman, R Soer, R J M Groen
INTRODUCTION: Cervical radiculopathy due to discogenic or spondylotic stenosis of the neuroforamen can be surgically treated by an anterior discectomy with fusion (ACDF) or a posterior foraminotomy (FOR). Most surgeons prefer ACDF, although there are indications that FOR is as effective as ACDF, has a lower complication rate and is less expensive. A head-to-head comparison of the 2 surgical techniques in a randomised controlled trial has not yet been performed. The study objectives of the Foraminotomy ACDF Cost-Effectiveness Trial (FACET) study are to compare clinical outcomes, complication rates and cost-effectiveness of FOR to ACDF...
January 5, 2017: BMJ Open
https://www.readbyqxmd.com/read/28052417/c8-cross-transfer-for-the-treatment-of-caudal-brachial-plexus-avulsion-in-three-dogs
#9
Pierre Moissonnier, Claude Carozzo, Jean-Laurent Thibaut, Catherine Escriou, Antoine Hidalgo, Stéphane Blot
OBJECTIVE: To evaluate the cervical nerve 8 cross-transfer technique (C8CT) as a part of surgical treatment of caudal brachial plexus avulsion (BPA) in the dog. STUDY DESIGN: Case series. ANIMALS: Client-owned dogs suspected to have caudal BPA based on neurological examination and electrophysiological testing (n = 3). METHODS: The distal stump of the surgically transected contralateral C8 ventral branch (donor) was bridged to the proximal stump of the avulsed C8 ventral branch (recipient) and secured with 9-0 polypropylene suture under an operating microscope...
January 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28050690/ultrasonography-has-a-diagnostic-value-in-the-assessment-of-cervical-radiculopathy-a-prospective-pilot-study
#10
Mikinobu Takeuchi, Norimitsu Wakao, Atsuhiko Hirasawa, Kenta Murotani, Mitsuhiro Kamiya, Koji Osuka, Masakazu Takayasu
OBJECTIVE: This study investigated the diagnostic accuracy of the difference in the cross-sectional areas (CSAs) of affected cervical nerve roots (NRs) for diagnosing cervical radiculopathy (CR). METHODS: In total, 102 CR patients and 219 healthy volunteers were examined with ultrasound. The CSA of the cervical NR at each level was measured on the affected side and the contralateral side in CR patients by blinded ultrasonographic technicians. The difference between the CSAs of CR patients and normal volunteers and the difference in the laterality of CSA at the same affected level (ΔCSA) were calculated for each cervical level...
January 3, 2017: European Radiology
https://www.readbyqxmd.com/read/28046293/su-f-t-631-linear-accelerator-based-frameless-extracranial-radiosurgery-for-treatment-of-occipital-neuralgia-for-non-surgical-candidates
#11
T Denton, J Howe, A Spalding
PURPOSE: Occipital neuralgia is a condition wherein pain is transmitted by the occipital nerves. Non-invasive therapies generally alleviate symptoms; however, persistent or recurring pain may require invasive procedures. Repeated invasive procedures upon failure are considered higher risk and are often contraindicated due to compounding inherent risk. SRS has not been explored as a treatment option largely due to the extracranial nature of the target (as opposed to the similar, more established trigeminal neuralgia), but advances in linear-accelerator frameless-based SRS now present an opportunity to evaluate the novel potential of this modality for this application...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28042720/resection-of-uncovertebral-joints-and-posterior-longitudinal-ligament-for-cervical-disc-arthroplasty
#12
Tsung-Hsi Tu, Chih-Chang Chang, Jau-Ching Wu, Li-Yu Fay, Wen-Cheng Huang, Henrich Cheng
The most commonly accepted indications for cervical disc arthroplasty (CDA) are 1- and 2-level cervical disc herniation or spondylosis causing radiculopathy or myelopathy that is refractory to medical management. Unlike anterior cervical discectomy and fusion (ACDF), which eliminates motion, CDA aims to restore the physiological range of motion of the indexed joint. Thus, the effect of indirect decompression gained by the insertion of a sufficiently large interbody graft and incorporation into arthrodesis after ACDF cannot be duplicated for CDA...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042263/efficacy-of-la-axxess-burs-gates-glidden-drills-and-protaper-sx-in-obtaining-straight-line-access-in-mesiobuccal-roots-of-mandibular-first-molars-a-cone-beam-computed-tomography-assessment
#13
Promila Verma, Rhythm Bains, A P Tikku, Anil Chandra, Shibha Mehta
OBJECTIVE: This study aims at cone-beam computed tomography (CBCT) evaluation of the ability of Gates Glidden (GG) drills, Protaper Sx, and LA Axxess burs to produce a straight line access (SLA) in mesiobuccal canals of mandibular first molars. METHODOLOGY: Forty-five freshly extracted mandibular teeth with a canal curvature of 10-20° were taken for the study and divided into three groups according to the instruments used for cervical preflaring: Group I (LA Axxess burs), Group II (GG drills), and Group III (Protaper Sx)...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28035998/tgf-%C3%AE-and-physiological-root-resorption-of-deciduous-teeth
#14
Emi Shimazaki, Takeo Karakida, Ryuji Yamamoto, Saeko Kobayashi, Makoto Fukae, Yasuo Yamakoshi, Yoshinobu Asada
The present study was performed to examine how transforming growth factor β (TGF-β) in root-surrounding tissues on deciduous teeth regulates the differentiation induction into odontoclasts during physiological root resorption. We prepared root-surrounding tissues with (R) or without (N) physiological root resorption scraped off at three regions (R1-R3 or N1-N3) from the cervical area to the apical area of the tooth and measured both TGF-β and the tartrate-resistant acid phosphatase (TRAP) activities. The TGF-β activity level was increased in N1-N3, whereas the TRAP activity was increased in R2 and R3...
December 27, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28031235/htp-nutraceutical-screening-for-histone-deacetylase-inhibitors-and-effects-of-hdacis-on-tumor-suppressing-mirnas-by-trichostatin-a-and-grapeseed-vitis-vinifera-in-hela-cells
#15
Elizabeth A Mazzio, Karam F A Soliman
BACKGROUND/AIM: Aggressive tumor malignancies are a consequence of delayed diagnosis, epigenetic/phenotype changes and chemo-radiation resistance. Histone deacetylases (HDACs) are a major epigenetic regulator of transcriptional repression, which are highly overexpressed in advanced malignancy. While original chemotherapy drugs were modeled after phytochemicals elucidated by botanical screenings, HDAC inhibitors (HDACi) such as apicidin, trichostatin A (TSA) and butyrate were discovered as products of fungus and microbes, in particular, gut microbiota...
January 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28028952/mastalgia-due-to-degenerative-changes-of-the-spine
#16
Okay Pirti, Aziz M Barlas, Serdar Kuru, Selim Temel, Mustafa K Urhan, Kemal Kismet, Adnan Hasanoglu, Osman Guler
BACKGROUND: Mastalgia is a common and enigmatic condition; the cause and optimal treatment are still inadequately defined. Cervical radiculopathy, which is the result of cervical nerve root pathology often caused by spaceoccupying lesions such as cervical disc herniation, spondylosis, or osteophytosis, is frequently encountered in physical therapy. OBJECTIVES: The aim of the study was to evaluate the incidence of vertebral pathologies in patients with non-cyclic mastalgia and the efficacy of conservative treatment of these pathologies on relieving breast pain...
September 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28024679/gender-norms-as-health-harms-reclaiming-a-life-course-perspective-on-sexual-and-reproductive-health-and-rights
#17
Cailin Crockett, Bergen Cooper
Despite their demographic significance and the lifetime impact of gender disparities on their health and rights, women considered older than reproductive age are excluded from most investments in global public health. While development policies linking human rights with access to sexual and reproductive healthcare have yielded progress towards improving the status of women and girls, older women have not benefited from these initiatives. Yet as women grow older, they experience a range of health conditions rooted in their reproductive biology - from ageing with fistula, to cervical and breast cancers...
November 2016: Reproductive Health Matters
https://www.readbyqxmd.com/read/28018768/rare-intradural-cervical-nerve-root-metastasis-of-follicular-thyroid-carcinoma
#18
Joseph Keen, Elena Milosavljevic, George Hanna, Vadim Gospodarev, Ravi Raghavan, Samer Ghostine
Intradural extramedullary nerve root metastasis is extremely unusual with only a handful of cases reported, and it presents most commonly in the thoracic and lumbosacral regions. We report the first case of metastasis to a ventral cervical nerve root in a patient with low-grade follicular thyroid carcinoma thought to be in remission for several years. Histopathology demonstrated malignant transformation and invasion of the nerve root. This case underscores that any history of malignancy regardless of staging, grading, or remission status should raise the suspicion of metastasis as it can mimic other spine and nerve sheath tumors and represent malignant transformation...
November 24, 2016: Curēus
https://www.readbyqxmd.com/read/28018284/developmental-changes-in-pain-and-spinal-immune-gene-expression-after-radicular-trauma-in-the-rat
#19
Gordon A Barr, Shaoning Wang, Christine L Weisshaar, Beth A Winkelstein
Neuropathic pain is chronic pain that develops after nerve injury and is less frequent in infants and children than in adults. Likewise, in animal models of neuropathic pain, allodynia and hyperalgesia are non-existent or attenuated in the infant, with a "switch" during development by which acute nerve injury transitions to chronic pain. Concomitant with the delay in neuropathic pain, there is a parallel delay in the ability of nerve injury to activate the immune system. Models of neuropathic pain in the infant have used various ligation methods and find that neuropathic pain does not occur under after postnatal days 21-28 (PN21-PN28), linked to activation of immune processes and developmental regulation of anti-inflammatory cytokines...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/28012081/the-norwegian-cervical-arthroplasty-trial-norcat-2-year-clinical-outcome-after-single-level-cervical-arthroplasty-versus-fusion-a-prospective-single-blinded-randomized-controlled-multicenter-study
#20
Jarle Sundseth, Oddrun Anita Fredriksli, Frode Kolstad, Lars Gunnar Johnsen, Are Hugo Pripp, Hege Andresen, Erling Myrseth, Kay Müller, Øystein P Nygaard, John-Anker Zwart
PURPOSE: Standard surgical treatment for symptomatic cervical disc disease has been discectomy and fusion, but the use of arthroplasty, designed to preserve motion, has increased, and most studies report clinical outcome in its favor. Few of these trials, however, blinded the patients. We, therefore, conducted the Norwegian Cervical Arthroplasty Trial, and present 2-year clinical outcome after arthroplasty or fusion. METHODS: This multicenter trial included 136 patients with single-level cervical disc disease...
December 23, 2016: European Spine Journal
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