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https://www.readbyqxmd.com/read/28735795/accuracy-of-2-endodontic-rotary-motors-with-integrated-apex-locator
#1
Alessandra Timponi Goes Cruz, Caroline Wichnieski, Everdan Carneiro, Ulisses Xavier da Silva Neto, Gianluca Gambarini, Lucila Piasecki
INTRODUCTION: The purpose of this study was to evaluate in vitro the efficacy of both the electronic apex locator (EAL) and auto apical reverse (AAR) functions of the endodontic motor MM Control (Micro-Mega, Besançon Cedex, France) compared with Root ZX II (J Morita, Tokyo, Japan). METHODS: After cervical preflaring, the actual lengths (ALs) of 36 single-rooted teeth were obtained up to the apical foramen. The EAL measurements at the marks "APEX" and "0.5" of both devices were obtained using an alginate model...
July 20, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28734648/minimally-invasive-treatment-of-class-4-invasive-cervical-resorption-with-internal-approach-a%C3%A2-case-series
#2
Avi Shemesh, Joe Ben Itzhak, Michael Solomonov
Invasive cervical resorption (ICR) is a type of external resorption that can involve the coronal, middle, and apical parts of the root in its advanced stages. The diagnosis and treatment of ICR depend on the extent of the resorption into the dentin. The treatment of advanced ICR is challenging, and these teeth have poor prognoses. This article describes 4 cases of class 4 ICR diagnosed by using cone-beam computed tomography and treated with a minimally invasive internal approach with sodium hypochlorite irrigation and calcium hydroxide dressing...
July 19, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28728911/effects-of-riluzole-on-spinal-seizure-like-activity-in-the-brainstem-spinal-cord-preparation-of-newborn-rat
#3
Shih Tien Lin, Masayuki Ohbayashi, Toshinori Yamamoto, Hiroshi Onimaru, Mari Kogo
Riluzole blocks persistent Na(+) current, inhibits generation of neuronal bursts and decreases glutamate-induced excitotoxicity. In previous studies of respiratory activity, riluzole suppressed inspiratory-related burst generation activity in rat slice or en bloc preparations. We examined riluzole's effects on inspiratory burst generation and drug-induced seizure-like activity in newborn rat en bloc preparations. Medulla-spinal cord preparations from postnatal day 0-3 Wistar rats were isolated under deep isoflurane anesthesia and were superfused with artificial cerebrospinal fluid equilibrated with 95% O2 and 5% CO2, pH 7...
July 17, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28725916/cervical-extraforaminal-ligaments-an-anatomical-study
#4
Mehmet Arslan, Halil İbrahim Açar, Ayhan Cömert
PURPOSE: The purpose of this study was to elucidate the anatomy and clinical importance of extraforaminal ligaments in the cervical region. METHODS: This study was performed on eight embalmed cadavers. The existence and types of extraforaminal ligaments were identified. The morphology, quantity, origin, insertion, and orientation of the extraforaminal ligaments in the cervical region were observed. RESULTS: Extraforaminal ligaments could be divided into two types: transforaminal ligaments and radiating ligaments...
July 19, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28720987/management-of-post-traumatic-neglected-cervical-facet-dislocation
#5
Vinay Prabhat, Tankeshwar Boruah, Hitesh Lal, Ramesh Kumar, Ashish Dagar, Harekrushna Sahu
BACKGROUND: Post-traumatic unilateral or bilateral sub-axial cervical spine dislocations with locked facets are quite common. In developing countries like India, many patients with cervical injuries report late due to many reasons like rural backgrounds, lack of infrastructures and skilled surgeons, unawareness, poor socioeconomic status, lack of transportation to the specialized center with proper facility, etc. Early management is essential to maximize better neurological outcome. Delayed or neglected presentation makes treatment more challenging...
April 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28700369/pulsed-radiofrequency-in-chronic-pain
#6
Thibaut Vanneste, Astrid Van Lantschoot, Koen Van Boxem, Jan Van Zundert
PURPOSE OF REVIEW: The increasing number of publications on pulsed radiofrequency (PRF) treatment of chronic pain reflects the interest for this technique. We summarize the literature for PRF in five indications: radicular pain, trigeminal neuralgia (TN), occipital neuralgia, shoulder and knee pain. RECENT FINDINGS: The efficacy and safety of PRF adjacent to the dorsal root ganglion was documented on cervical and on lumbar level.PRF has been used for the treatment of TN...
July 11, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28696151/paravertebral-brachial-plexus-blockade-in-cats-a-cadaver-study
#7
Marina C Evangelista, Beatriz P Monteiro, Graeme M Doodnaught, Pascale Benoist, Paulo V Steagall
Objectives The aims of this study were to describe the paravertebral brachial plexus (PBP) blockade in cats, and compare the spread of bupivacaine-methylene blue solution (BMS) using two volumes of injection into the PBP. Methods Six cadavers (4.4 ± 1.8 kg) randomly received 0.15 ml/kg (LOW) or 0.2 ml/kg (HIGH) per injection of BMS into the PBP. The first injection was made ventral to the transverse process of the sixth cervical vertebra (nerves C6 and C7) at the emergence of nerve roots. A second injection was performed at the edge of the cranial border of the scapula and directed ventrally towards the first rib (C8 and T1)...
July 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28694597/management-of-cervical-monoradiculopathy-due-to-prolapsed-intervertebral-disc-an-institutional-experience
#8
Amresh S Bhaganagare, S A Nagesh, B G Shrihari, Vikas Naik, M N Nagarjun, Balaji S Pai
BACKGROUND: Cervical radiculopathy is the common clinical entity, often caused by "wear and tear" changes that occur in the spine. In the younger population, cervical radiculopathy is a result of a disc herniation or an acute injury causing foraminal impingement of an exiting nerve, whereas in the older individuals, it is due to foraminal narrowing from osteophyte formation, decreased disc height, and degenerative changes of the uncovertebral joints anteriorly and of the facet joints posteriorly...
April 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28693895/determination-of-the-accuracy-of-5-electronic-apex-locators-in-the-function-of-different-employment-protocols
#9
Tiago Nepomuceno Oliveira, Nilton Vivacqua-Gomes, Ricardo Affonso Bernardes, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte, Bruno Carvalho Vasconcelos
INTRODUCTION: The aim of this study was to evaluate the accuracy of 5 electronic apex locators (EALs): Root ZX II (RZX; J Morita, Tokyo, Japan), Raypex 6 (RAY; VDW GmbH, Munich, Germany), Apex ID (AID; SybronEndo, Orange, CA), Propex II (PRO; Dentsply Maillefer, Ballaigues, Switzerland), and Propex Pixi (PIXI, Dentsply Maillefer) when used in the following protocols: (1) -1.0, insertion up to 1.0 mm below the apical foramen (AF); (2) 0.0/-1.0, insertion until the AF and withdrawn 1.0 mm short of the AF; (3) 0...
July 7, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28681489/nerve-ultrasound-as-follow-up-tool-in-treated-multifocal-motor-neuropathy
#10
T W Rattay, N Winter, B F Décard, N M Dammeier, F Härtig, M Ceanga, H Axer, A Grimm
BACKGROUND AND PURPOSE: High-resolution ultrasound is a valuable tool in supporting the diagnosis of multifocal motor neuropathy (MMN) but longitudinal data under therapy are lacking. METHODS: The change in peripheral nerve ultrasound pattern in patients with MMN was assessed over time. Patients with MMN received a thorough initial examination and follow-up over a period of 6-12 months using high-resolution ultrasound of the cervical roots and the nerves of the arms and legs, nerve conduction studies, Medical Research Council Sum Score (MRCSS) and Rotterdam Inflammatory Neuropathy Cause and Treatment Group (INCAT) score to evaluate changes under treatment...
July 5, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28665816/ultrasound-guided-injection-to-the-fifth-cervical-spinal-nerve-root-level
#11
Carl P C Chen, Henry L Lew, Pei-Chi Huang, Chia-Wei Yu
No abstract text is available yet for this article.
June 30, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28665047/external-tooth-resorption-associated-with-a-peripheral-odontogenic-fibroma-review-and-case-report
#12
Geoffrey Sinclair Heithersay, Davide Musu, Elisabetta Cotti
The purpose of the study is to document a rare case of a peripheral odontogenic fibroma with associated cervical and coronal tooth resorption in a 38-year-old female. Histopathologic features are described, the clinical management outlined and follow-up observations over 27 years detailed. The exophytic firm lesion,coral pink in appearance, located on the labial aspect of a maxillary left lateral incisor was excised, fixed in formalin and prepared for histolologic evaluation. The resorption cavity and adjacent soft tissue were treated by the topical application of trichloracetic acid prior to restoration with a glass ionomer cement and subsequent root canal treatment...
June 30, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28660372/a-finite-element-study-of-traditional-chinese-cervical-manipulation
#13
Zhen Deng, Kuan Wang, Huihao Wang, Tianying Lan, Hongsheng Zhan, Wenxin Niu
PURPOSE: Traditional Chinese cervical manipulation (TCCM) has been claimed as an effective treatment for diseases of the cervical spine, but its biomechanical effects on the vertebral body and intervertebral discs remain unclear. The aim of this study was to develop and validate a detailed finite element model of cervical spine, which was then used to investigate the biomechanical response of the cervical spine to TCCM. METHODS: The model of a C2-T1 cervical spine was constructed based on CT images of a healthy male volunteer and validated against published in vitro studies under different loading conditions...
June 28, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28659464/impact-of-glutamatergic-and-serotonergic-neurotransmission-on-diaphragm-muscle-activity-after-cervical-spinal-hemisection
#14
Carlos B Mantilla, Heather M Gransee, Wen-Zhi Zhan, Gary C Sieck
Incomplete cervical spinal cord hemisection at C2 (SH) disrupts descending excitatory drive to phrenic motoneurons, paralyzing the ipsilateral diaphragm muscle. Spontaneous recovery over time is associated with increased phrenic motoneuron expression of glutamatergic N-methyl-D-aspartate (NMDA) and serotonergic 5-HT2A receptors. We hypothesized that NMDA and 5-HT2A receptor-mediated neurotransmission play a role in ipsilateral diaphragm muscle activity post-SH. Adult male Sprague-Dawley rats were implanted with bilateral diaphragm EMG electrodes for chronic EMG recordings up to 28 days post-SH (SH 28D)...
June 28, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28645526/injury-induced-gp130-cytokine-signaling-in-peripheral-ganglia-is-reduced-in-diabetes-mellitus
#15
Jon P Niemi, Angela R Filous, Alicia DeFrancesco, Jane A Lindborg, Nisha A Malhotra, Gina N Wilson, Bowen Zhou, Samuel D Crish, Richard E Zigmond
Neuropathy is a major diabetic complication. While the mechanism of this neuropathy is not well understood, it is believed to result in part from deficient nerve regeneration. Work from our laboratory established that gp130 family of cytokines are induced in animals after axonal injury and are involved in the induction of regeneration-associated genes (RAGs) and in the conditioning lesion response. Here, we examine whether a reduction of cytokine signaling occurs in diabetes. Streptozotocin (STZ) was used to destroy pancreatic β cells, leading to chronic hyperglycemia...
June 20, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28622486/the-physiological-basis-of-cervical-facet-mediated-persistent-pain-basic-science-and-clinical-challenges
#16
Meagan E Ita, Sijia Zhang, Timothy P Holsgrove, Sonia Kartha, Beth A Winkelstein
Synopsis Chronic neck pain is a common condition and a primary clinical symptom of whiplash and other spinal injuries. Loading-induced neck injuries produce abnormal kinematics between the vertebrae, with the potential to injure facet joints and the afferent fibers that innervate the specific joint tissues, including the capsular ligament. Mechanoreceptive and nociceptive afferents that innervate the facet have their peripheral terminals in the capsule, cell bodies in the dorsal root ganglia, and terminal processes in the spinal cord...
July 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28621833/multiple-external-cervical-root-resorptions-after-home-bleaching-treatment-with-22-carbamide-peroxide
#17
Glauco Rodrigues Velloso, Marcos Motta de Freitas, Adriana Terezinha Neves Novellino Alves, Alan Roger Santos Silva, Eliane Dos Santos Porto Barboza, Vittorio Moraschini
Invasive multiple cervical root resorptions after vital tooth bleaching is a rare condition. The aim of this article is to present a case of multiple external cervical root resorptions (ECRR) after a misguided home whitening treatment. A 34-year-old male patient presented with slight sensitivity and mobility in several teeth. Despite the manufacturer's recommendations, the patient used a 22% carbamide peroxide-based tooth bleaching gel at home for 4 consecutive days, at night, on the upper and lower arches...
June 16, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28621279/comparative-evaluation-of-stress-developed-on-rotary-retreatment-instruments-during-retrieval-of-gutta-percha
#18
Dhanasekaran Sihivahanan, T Vinay Kumar Reddy, Anchu Rachel Thomas, Natarajan Senthilnathan, Murali Sivakumar, Sushmita Shivanna
AIM: The aim of the study is to compare the maximum stress distribution on the rotary retreatment instruments within the root canal at cervical, middle, and the apical one-third during retreatment of gutta-percha. MATERIALS AND METHODS: A human mandibular premolar was scanned, and three-dimensional geometry of the root was reconstructed using finite element analysis (FEA) software package (ANSYS). The basic model was kept unchanged; tooth models were created using the same dimensions and divided into two groups as follows: Group I: ProTaper Universal retreatment system and group II: Mtwo rotary retreatment system...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28618294/focused-high-resolution-sonography-of-the-suprascapular-nerve-a-simple-surrogate-marker-for-neuralgic-amyotrophy
#19
Leonhard Gruber, Alexander Loizides, Wolfgang Löscher, Bernhard Glodny, Hannes Gruber
OBJECTIVES: To define the diagnostic value of high-resolution ultrasound (HRUS) of the suprascapular nerve (SSN) in the diagnosis of neuralgic amyotrophy (NA). METHODS: The cross-section areas (CSA) of the SSN at the C5 root (CSA1) and the omohyoid muscle in the midclavicular line (CSA2) were assessed bilaterally in 15 healthy volunteers and 14 patients with clinically and electrophysiologically verified NA. Receiver-operator-characteristics (ROC) curves were generated and cut-off values, sensitivity, specificity, positive (PPV) and negative predictive values (NPV), likelihood (LR) and odds ratios (OR) were calculated...
August 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28606671/external-cervical-resorption-a-new-oral-manifestation-of-systemic-sclerosis
#20
Sebastiana Arroyo-Bote, Cristina Bucchi, Ma Cristina Manzanares
Systemic sclerosis (SSc) is a complex, chronic, and progressive autoimmune disease. SSc causes bone resorption of mandible and distal phalanges of fingers through a known mechanism, and it has also been pointed out as a possible cause of apical root resorption of teeth, because tooth resorption is regulated by similar mechanisms to those controlling bone resorption. The objective of this article was to report the first case in the literature of external cervical resorption (ECR) as an oral manifestation of SSc...
June 9, 2017: Journal of Endodontics
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