632 results match your criteria cord retraction


The different mechanisms of peripheral and central TLR4 on chronic postsurgical pain in rats.

J Anat 2021 Mar 17. Epub 2021 Mar 17.

The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China.

Chronic postsurgical pain (CPSP) is a common complication after surgery; however, the underlying mechanisms of CPSP are poorly understood. As one of the most important inflammatory pathways, the Toll-like receptor 4/nuclear factor-kappa B (TLR4/NF-κB) signaling pathway plays an important role in chronic pain. However, the precise role of the TLR4/NF-κB signaling pathway in CPSP remains unclear. Read More

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Far Lateral Approach for Resection of Transverse Ligament Cyst.

J Neurol Surg B Skull Base 2021 Feb 13;82(Suppl 1):S37-S38. Epub 2020 Mar 13.

Department of Neurosurgery, University of Tennessee, Memphis, Tennessee, United States.

 This study was aimed to describe a far lateral approach for microsurgical resection of a transverse ligament cyst, with emphasis on the microsurgical anatomy and technique.  A far lateral craniotomy is performed in the lateral decubitus position. After opening the dura laterally, dural sutures are placed for retraction. Read More

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February 2021

Endoscopic Posterior Approach for Cervicothoracic and Upper Thoracic Foraminotomies: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 Mar 9. Epub 2021 Mar 9.

Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA.

Lower cervical and cervicothoracic radiculopathies can be challenging to treat through an anterior approach in patients with short-statured necks. With unilateral pathology, a posterior foraminotomy affords preservation of motion and avoids risks to anterior structures; yet, traditional open or even tubular retractor-based open systems are associated with postoperative muscle pain. Endoscopic approaches reduce muscle retraction and resection and are associated with shorter recovery time. Read More

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Comparing effectiveness of rubber dam and gingival displacement cord with copy abutment in reducing residual cement in cement-retained implant crowns: A crossover RCT.

Clin Oral Implants Res 2021 Feb 17. Epub 2021 Feb 17.

Institute of Odontology, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.

Objective: To evaluate the amount of residual cement after cementation of implant crown abutments with rubber dam and retraction cord with copy abutments techniques.

Material And Methods: Thirty single posterior metal-ceramic implant-supported restorations were delivered to 20 patients. The crowns were fabricated with occlusal openings obturated with composite, and then luted with resin-reinforced glass-ionomer cement on customised standard abutments. Read More

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February 2021

EphA4 Obstructs Spinal Cord Neuron Regeneration by Promoting Excessive Activation of Astrocytes.

Cell Mol Neurobiol 2021 Feb 17. Epub 2021 Feb 17.

Department of Orthopaedics, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, No 6, Beijing West Road, Huai'an, 223300, Jiangsu, People's Republic of China.

Studies have found that molecular targets that regulate tissue development are also involved in regulating tissue regeneration. Erythropoietin-producing hepatocyte A4 (EphA4) not only plays a guiding role in neurite outgrowth during the development of the central nervous system (CNS) but also induces injured axon retraction and inhibits axon regeneration after spinal cord injury (SCI). EphA4 targets several ephrin ligands (including ephrin-A and ephrin-B) and is involved in cortical cell migration, axon guidance, synapse formation and astrocyte function. Read More

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February 2021

Evaluation of gingival displacement methods in terms of periodontal health at crown restorations produced by digital scan: 1-year clinical follow-up.

Lasers Med Sci 2021 Feb 10. Epub 2021 Feb 10.

Department of Restorative Dentistry, Faculty of Dentistry, University of Van Yuzuncu Yil, Van, Turkey.

The purpose of this clinical study was to compare the effects of the gingival displacement techniques of retraction cord, cordless paste system, and Er,Cr:YSGG laser troughing on the periodontal tissues around the crown restoration produced using a digital scan. This was analyzed by recording the probing depth (PD), plaque index, gingival index (GI), mobility, sensitivity, and bleeding on probing (BOP) index. This study included 60 mandibular 1 molars from 52 participants (20 males and 32 females) requiring crown restoration. Read More

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February 2021

Minimally Invasive Tubular Separation Surgery for Metastatic Spinal Cord Compression: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2020 Dec 29. Epub 2020 Dec 29.

Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York.

Symptomatic cord compression affects approximately 20% of patients with spinal metastatic disease. Direct decompressive surgery followed by conventional radiation was shown to be superior to radiation alone in a landmark trial published in 2005.1 For radioresistant tumors causing high-grade compression, however, "separation surgery" followed by stereotactic body radiation therapy was developed. Read More

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December 2020

Efficacy of salivary versus subgingival bacterial sampling for the detection and quantification of periodontal pathogens.

J Periodontal Implant Sci 2020 Dec;50(6):358-367

Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea.

Purpose: The aim of this study was to investigate the efficacy and validity of subgingival bacterial sampling using a retraction cord, and to evaluate how well this sampling method reflected changes in periodontal conditions after periodontal therapy.

Methods: Based on clinical examinations, 87 subjects were divided into a healthy group (n=40) and a periodontitis group (n=47). Clinical measurements were obtained from all subjects including periodontal probing depth (PD), bleeding on probing (BOP), clinical attachment loss (CAL), and the plaque index. Read More

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December 2020

Limited evidence suggests complete arch digital scans are less time efficient than conventional impression.

Evid Based Dent 2020 12;21(4):138-139

Professor of Prosthodontics and Member of the Evidence Based Dentistry Centre, Faculty of Dentistry, Cairo University, Egypt.

Source of funding This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectorsType of study/design Randomised controlled trial (RCT) with parallel design.Subjects This RCT was conducted at the Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Centre of Dental Medicine, University of Zurich, Zurich, Switzerland. Ten patients, six women and four men, with a mean age of 62 years and an age range of 49-77 years, requiring posterior tooth-supported 3-unit fixed partial dentures (FPDs) were included in this RCT. Read More

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December 2020

Role of Proto-Oncogene as a Transcriptional Hub to Regulate the Expression of Regeneration-Associated Genes following Preconditioning Peripheral Nerve Injury.

J Neurosci 2021 01 1;41(3):446-460. Epub 2020 Dec 1.

Department of Brain Science, Ajou University Graduate School of Medicine, Suwon, 16499, Republic of Korea

Preconditioning peripheral nerve injury enhances the intrinsic growth capacity of DRGs sensory axons by inducing transcriptional upregulation of the regeneration-associated genes (RAGs). However, it is still unclear how preconditioning injury leads to the orchestrated induction of many RAGs. The present study identified proto-oncogene as a transcriptional hub gene to regulate the expression of a distinct subset of RAGs in DRGs following the preconditioning injury. Read More

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January 2021

[Clinical efficacy of two-staged Fowler-Stephens laparoscopic orchidopexy in the treatment of children with high cryptorchidism].

Zhonghua Yi Xue Za Zhi 2020 Dec;100(44):3520-3524

Department of Urology Surgery, the Children's hospital capital institute of pediatrics, Beijing 100020 China.

To Evaluate the clinic effect of two-staged laparoscopic Fowler-Stephens orchiopexy in the treatment of high cryptorchidism, and compare it with laparoscopic orchiopexy treatment without disconnecting spermatic vessels. A retrospective analysis was conducted on 20 cases of children with high cryptorchidism who were treated with two-staged Fowler-Stephens orchiopexy from January 2015 to April 2019 (F-S group). All the children in this group had unilateral cryptorchidism, age 6 to 18 months. Read More

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December 2020

Retraction.

Authors:

J Cell Biochem 2021 Jan 23;122(1):146. Epub 2020 Sep 23.

"Downregulation of long noncoding RNA Sox2ot protects PC-12 cells from hydrogen peroxide-induced injury in spinal cord injury via regulating the miR-211-myeloid cell leukemia-1 isoform2 axis," by Dong Yin, Xiaoqing Zheng, Jianxiong Zhuang, Liangze Wang, Bin Liu, Yunbing Chang, J Cell Biochem. 2018; 9675-9684: The above article, published online on 26 August 2018 in Wiley Online Library (https://onlinelibrary.wiley. Read More

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January 2021

Effects of magnesium sulfate administration in attenuating chronic postsurgical pain in rats.

Biochem Biophys Res Commun 2021 01 25;534:395-400. Epub 2020 Nov 25.

Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan.

Chronic postsurgical pain (CPSP) is a serious issue for many postoperative patients. Though there are numerous treatment options for the prevention of CPSP, none of them is optimal as the mechanisms of the transition from acute to chronic postoperative pain have not been elucidated. Ketamine and opioids have been administered for chronic postoperative pain treatment but induce severe adverse reactions and/or physical dependency. Read More

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January 2021

Comparison of Periodontopathic Bacterial Profiles of Different Periodontal Disease Severity Using Multiplex Real-Time Polymerase Chain Reaction.

Diagnostics (Basel) 2020 Nov 17;10(11). Epub 2020 Nov 17.

Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea.

Periodontopathic bacteria are known to have a pivotal role in the pathogenesis of periodontitis. The aim of the study was to quantitatively compare bacterial profile of patients with different severity of periodontal disease using samples from mouthwash and the subgingival area. Further analysis was performed to evaluate the correlation between mouthwash and two subgingival sampling methods: paperpoint and gingival retraction cord; 114 subjects enrolled in the study, and were divided equally into three groups according to disease severity. Read More

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November 2020

Neuronal NADPH oxidase 2 regulates growth cone guidance downstream of slit2/robo2.

Dev Neurobiol 2021 Jan 5;81(1):3-21. Epub 2020 Dec 5.

Department of Biological Sciences, Purdue University, West Lafayette, IN, USA.

NADPH oxidases (Nox) are membrane-bound multi-subunit protein complexes producing reactive oxygen species (ROS) that regulate many cellular processes. Emerging evidence suggests that Nox-derived ROS also control neuronal development and axonal outgrowth. However, whether Nox act downstream of receptors for axonal growth and guidance cues is presently unknown. Read More

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January 2021

Effects of nicorandil on p120 expression in the spinal cord and dorsal root ganglion of rats with chronic postsurgical pain.

Mol Med Rep 2020 Dec 28;22(6):4821-4827. Epub 2020 Sep 28.

Department of Anesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, P.R. China.

Chronic postsurgical pain (CPSP) has a high incidence, but the underlying mechanism is not well understood. Accumulating evidence has suggested that central sensitization is the main mechanism of pain. To study the role of p120 in CPSP, a skin/muscle incision and retraction (SMIR) model was established, and immunofluorescence staining and western blotting were performed to analyze the expression of p120 in the spinal cord and dorsal root ganglion (DRG). Read More

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December 2020

Source of Early Regenerating Axons in Lamprey Spinal Cord Revealed by Wholemount Optical Clearing with BABB.

Cells 2020 11 6;9(11). Epub 2020 Nov 6.

Shriners Hospitals Pediatric Research Center (Center for Neural Repair and Rehabilitation), Philadelphia, PA 19140, USA.

Many studies of axon regeneration in the lamprey focus on 18 pairs of large identified reticulospinal (RS) neurons, whose regenerative abilities have been individually quantified. Their axons retract during the first 2 weeks after transection (TX), and many grow back to the site of injury by 4 weeks. However, locomotor movements begin before 4 weeks and the lesion is invaded by axons as early as 2 weeks post-TX. Read More

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November 2020

Assessment of Aluminum Chloride Retraction Cords, Expasyl, and Tetrahydrozoline-Soaked Retraction Systems in Gingival Retraction.

J Pharm Bioallied Sci 2020 Aug 28;12(Suppl 1):S440-S443. Epub 2020 Aug 28.

Department of Oral and Maxillofacial Pathology, Malla Reddy Institute of Dental Sciences, Jeedimetla, Hyderabad, Telangana, India.

Aim: The aim of this study was to assess different gingival displacement systems such as aluminum chloride retraction cords, expasyl, and tetrahydrozoline-soaked retraction cord to record intracrevicular margins of tooth preparations.

Materials And Methods: This study included 60 patients. Patients were divided into four groups of 15 each. Read More

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Comparative Evaluation of the Amount of Gingival Displacement Using Three Recent Gingival Retraction Systems - Study.

Contemp Clin Dent 2020 Jan-Mar;11(1):28-33. Epub 2020 Jul 13.

Department of Prosthodontics and Crown and Bridge, Dr. D. Y. Patil Dental College and Hospital, Dr. D. Y. Patil Vidyapeeth, Pimpri, Pune, Maharashtra, India.

Background: Gingival retraction cord is the most commonly used gingival displacement material; however, it causes discomfort and produces damage to the periodontium. Various new gingival retraction materials have been introduced to overcome these problems. This study was conducted to compare the efficacy of three recent gingival displacement materials in achieving gingival tissue displacement. Read More

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Therapeutic Potential of Porcine Liver Decomposition Product: New Insights and Perspectives for Microglia-Mediated Neuroinflammation in Neurodegenerative Diseases.

Biomedicines 2020 Oct 22;8(11). Epub 2020 Oct 22.

Division of Clinical Pharmacology and Pharmaceutics, Nihon Pharmaceutical University, Saitama 362-0806, Japan.

It is widely accepted that microglia-mediated inflammation contributes to the progression of neurodegenerative diseases; however, the precise mechanisms through which these cells contribute remain to be elucidated. Microglia, as the primary immune effector cells of the brain, play key roles in maintaining central nervous system (CNS) homeostasis. Microglia are located throughout the brain and spinal cord and may account for up to 15% of all cells in the brain. Read More

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October 2020

Evaluation of alpha-adrenomimetic agents for gingival retraction: A randomized crossover clinical trial.

J Conserv Dent 2019 Nov-Dec;22(6):533-537. Epub 2020 Aug 20.

Private Practitioner, Satwalekar's Multispeciality Dental Hospital, Hyderabad, Telangana, India.

Context: The displacement of the gingiva around the tooth allows proper access during preparation, precise impression taking, and cementation procedures that has a direct bearing on the health of the periodontium. Several methods and agents are used for this purpose.

Aims: The primary aim of the study was to clinically evaluate the efficacy of naphazoline as a gingival retraction agent. Read More

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Retraction: Andersen S. S. L. Real time large scale observations reveal intrinsic synchrony, plasticity and growth cone dynamics of midline crossing axons at the ventral floor plate of the zebrafish spinal cord. J. Integr. Neurosci. 18(4), 351-368.

J Integr Neurosci 2020 Sep;19(3):593

SciLifeLab BioVis Facility, Uppsala University, Dag Hammarskjölds väg 14 B, S-751 85 Uppsala, Sweden.

The above-mentioned article (Andersen,2019), published online on December 30, 2019 has been withdrawn by Dr. Andersen. The retraction has been issued following additional information received by IMR Press and reviewed by the Chief Editor. Read More

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September 2020

Comparative analysis of trueness between conventional and digital impression in dental-supported fixed dental prosthesis with vertical preparation.

J Clin Exp Dent 2020 Sep 1;12(9):e896-e901. Epub 2020 Sep 1.

MD, Dr Med, DDS, Dr Odont. Professor, Department of Conservative Dentistry and Buccofacial Prostheses, Faculty of Dentistry, University Complutense of Madrid, Madrid, Spain.

Biologically oriented preparation technique (BOPT) is a vertical preparation technique without a finish line to create a new anatomic crown with a prosthetic emergence profile. This case report describe the protocol realized digitally in a patient who required a new fixed partial denture (FPD) in the anterior esthetic zone. After time of temporary restoration, definitive conventional (CI) (double-cord retraction and vinyl polysiloxane material), and digital impression (DI) with three different intraoral scanner (IOS) (Trios®, True Definition® and iTero®) were taken. Read More

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September 2020

Transpedicular Approach for Ventral Epidural Abscess Evacuation in the Cervical Spine.

World Neurosurg 2021 Jan 17;145:127-133. Epub 2020 Sep 17.

Department of Neurological Surgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA.

Objective: Spinal epidural abscess may require prompt surgical intervention. Ventral cervical abscesses pose a particular challenge regarding the approach for surgical evacuation. The aim of this article was to describe the technical nuances of a posterior transpedicular cervical approach for evacuation of a ventral epidural abscess. Read More

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January 2021