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https://www.readbyqxmd.com/read/29929060/perfusion-pressure-of-a-new-cannulating-fenestrated-pedicle-screw-during-cement-augmentation
#1
Zhirong Wang, Wen Zhang, Hao Xu, Aiqing Lu, Huilin Yang, Zong-Ping Luo
BACKGROUND: Cannulating fenestrated pedicle screws are effective for fixating osteoporotic vertebrae. However, a major limitation is the excessive pressure required to inject a sufficient amount of cement into the vertebral body through the narrow hole of a pedicle screw. We have recently proposed a new cannulating fenestrated pedicle screw with a large hole diameter and a matched inner pin for screw-strength maintenance. Our purpose was to determine whether the new screw can significantly reduce bone-cement perfusion pressure during cement augmentation, METHODS: Two different methods were used to examine perfusion pressure...
June 18, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29929027/percutaneous-pedicle-screw-fixation-with-bone-cement-augmentation-under-epidural-anesthesia-for-the-treatment-of-k%C3%A3-mmell-s-disease-at-extremely-old-age-a-case-report
#2
Keun Lee, Nitin Adsul, Hyeun-Sung Kim, Yong-Hun Pee, Kwang Lae Lee, Il-Tae Jang
BACKGROUND: In cases of Kümmell's disease without neuro deficit, percutaneous vertebroplasty or Kyphoplasty have achieved short-term favorable outcomes. In the long term, re-collapse of the augmented vertebral body and aggravation of the kyphosis at the index level is often reported. On the other hand, owing to medical comorbidities, the elderly are often not suited for extensive open spine surgery under general anesthesia. CASE DESCRIPTION: A 95-year-old man presented with a one-month history of intractable back pain and gait disturbance...
June 18, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29928832/amalgam-alternatives-cost-effectiveness-and-value-of-information-analysis
#3
F Schwendicke, G Göstemeyer, M Stolpe, J Krois
We aimed to assess the cost-effectiveness of amalgam alternatives-namely, incrementally placed composites (IComp), composites placed in bulk (BComp), and glass ionomer cements (GIC). In a sensitivity analysis, we also included composite inlays (CompI) and incrementally placed bulk-fills (IBComp). Moreover, the value of information (VOI) regarding the effectiveness of all strategies was determined. A mixed public-private-payer perspective in the context of Germany was adopted. Bayesian network meta-analyses were performed to yield effectiveness estimates (relative risk [RR] of failure)...
June 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29928396/clinical-efficacy-of-pvp-and-pkp-in-the-treatment-of-ovcfs-after-bilateral-resection-of-ovarian-cancer
#4
Shaoqian Wang, Hui Wang, Lei Niu
The clinical efficacy of percutaneous vertebroplasty (PVP) and percutaneous kyphoplasty (PKP) in the treatment of osteoporotic vertebral compression fractures after bilateral resection of ovarian cancer was investigated. Eighty-six patients with osteoporotic vertebral compression fractures after bilateral resection of ovarian cancer admitted to the Second People's Hospital of Hefei from September, 2015 to August, 2016 were selected and randomly divided into control group (n=43) and observation group (n=43)...
July 2018: Oncology Letters
https://www.readbyqxmd.com/read/29928100/bone-cement-pmma-arterio-venogram-following-total-hip-arthroplasty-case-series
#5
Hemanth Kumar Venkatesh, Mohammad Shoaib
No abstract text is available yet for this article.
June 2018: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29926957/peri-implantitis
#6
Frank Schwarz, Jan Derks, Alberto Monje, Hom-Lay Wang
OBJECTIVES: This narrative review provides an evidence-based overview on peri-implantitis for the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions. METHODS: A literature review was conducted addressing the following topics: 1) definition of peri-implantitis; 2) conversion from peri-implant mucositis to peri-implantitis, 3) onset and pattern of disease progression, 4) characteristics of peri-implantitis, 5) risk factors/indicators for peri-implantitis, and 6) progressive crestal bone loss in the absence of soft tissue inflammation...
June 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29926954/peri-implant-mucositis
#7
Lisa J A Heitz-Mayfield, Giovanni E Salvi
OBJECTIVES: This narrative review was prepared for the 2017 World Workshop of the American Academy of Periodontology and European Federation of Periodontology to address key questions related to the clinical condition of peri-implant mucositis, including: 1) the definition of peri-implant mucositis, 2) conversion of peri-implant health to the biofilm-induced peri-implant mucositis lesion, 3) reversibility of peri-implant mucositis, 4) the long-standing peri-implant mucositis lesion, 5) similarities and differences between peri-implant mucositis at implants and gingivitis at teeth, and 6) risk indicators/factors for peri-implant mucositis...
June 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29926488/peri-implant-mucositis
#8
Lisa J A Heitz-Mayfield, Giovanni E Salvi
OBJECTIVES: This narrative review was prepared for the 2017 World Workshop of the American Academy of Periodontology and European Federation of Periodontology to address key questions related to the clinical condition of peri-implant mucositis, including: 1) the definition of peri-implant mucositis, 2) conversion of peri-implant health to the biofilm-induced peri-implant mucositis lesion, 3) reversibility of peri-implant mucositis, 4) the long-standing peri-implant mucositis lesion, 5) similarities and differences between peri-implant mucositis at implants and gingivitis at teeth, and 6) risk indicators/factors for peri-implant mucositis...
June 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29926484/peri-implantitis
#9
Frank Schwarz, Jan Derks, Alberto Monje, Hom-Lay Wang
OBJECTIVES: This narrative review provides an evidence-based overview on peri-implantitis for the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions. METHODS: A literature review was conducted addressing the following topics: 1) definition of peri-implantitis; 2) conversion from peri-implant mucositis to peri-implantitis, 3) onset and pattern of disease progression, 4) characteristics of peri-implantitis, 5) risk factors/indicators for peri-implantitis, and 6) progressive crestal bone loss in the absence of soft tissue inflammation...
June 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29925710/effects-of-scanning-technique-on-in-vitro-performance-of-cad-cam-fabricated-fiber-posts
#10
Nino Tsintsadze, Jelena Juloski, Michele Carrabba, Cecilia Goracci, Alessandro Vichi, Simone Grandini, Marco Ferrari
This study assessed push-out strength, cement layer thickness, and interfacial nanoleakage of luted fiber posts fabricated with computer-aided design/computer-assisted manufacture (CAD/CAM) technology after use of 1 of 3 scanning techniques, namely, direct scanning of the post space (DS), scanning of a polyether impression of the post space (IS), and scanning of a plaster model of the post space (MS). Thirty premolars were randomly assigned to three groups corresponding to the scanning technique. Posts were computer-designed and milled from experimental fiber-reinforced composite blocks...
2018: Journal of Oral Science
https://www.readbyqxmd.com/read/29925103/medium-to-long-term-results-of-the-nexgen-legacy-posterior-stabilized-fixed-bearing-knee-replacement
#11
Oommen Mathew Arikupurathu, Linda Johnston, Alasdair MacInnes, Graeme Nicol, Manhal Nassif
The NexGen legacy posterior stabilized (LPS) prosthesis was introduced in 1997 after many design changes to its predecessor, the Insall-Burstein II prosthesis. However, there have been no reported long-term studies on the performance of this implant. Prospectively, collected data from a local database comprising primary total knee replacements (TKRs) with LPS between 1997 and 2002 was analyzed. All implants were fixed with cement. Patients were followed up at 1, 3, 5, 7, and 10 years, with patient satisfaction, range of movement, and Knee Society score (KSS) assessed...
June 20, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29924892/bayesian-analysis-of-air-emission-violations-from-waste-incineration-and-coincineration-plants
#12
Evan K Paleologos, Mohamed Elhakeem, Mohamed El Amrousi
Waste incineration and coincineration plants in most European countries have frequently updated their flue gas cleaning systems, surpassing in most cases E.U. air emission standards. At the same time, in most developing countries, cement and other coincineration facilities follow less stringent emission regulations and have a mixed record of protecting air quality. The European Union, the United States, and Canada have established penalties for air emission violations that account for the harm done to the environment and to human health and aiming to remove the economic benefit reaped as a result of noncompliance...
June 20, 2018: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/29923450/comparison-of-sacroplasty-with-or-without-balloon-assistance-for-the-treatment-of-sacral-insufficiency-fractures
#13
Shih-Chieh Yang, Tsung-Ting Tsai, Hung-Shu Chen, Chi-Jung Fang, Yu-Hsien Kao, Yuan-Kun Tu
PURPOSE: Sacral insufficiency fractures (SIFs) can cause severe lower back pain and immobility, which have limited therapeutic options. No previous studies have compared clinical outcomes and radiographic findings of sacroplasty with or without balloon assistance for the treatment of SIFs. METHODS: Forty-five patients with SIFs were divided into two groups. One group had 18 patients treated using sacroplasty with balloon assistance, and the other had 27 patients treated without balloon assistance...
May 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29923019/single-balloon-versus-double-balloon-bipedicular-kyphoplasty-a-systematic-review-and-meta-analysis
#14
REVIEW
Zehao Jing, Jianli Dong, Zhengwei Li, Feng Nan
INTRODUCTION: Kyphoplasty has been widely used to treat vertebral compression fractures (VCFs). In standard procedure of kyphoplasty, two balloons were inserted into the vertebral body through bipedicular and inflated simultaneously, while using a single balloon two times is also a common method in clinic to lessen the financial burden of patients. However, the effect and safety of single balloon versus double balloon bipedicular kyphoplasty are still controversy. METHODS: In this systematic review and meta-analysis, eligible studies were identified through a comprehensive literature search of PubMed, Cochrane library EMBASE, Web of Science, Wanfang, CNKI, VIP and CBM until January 1, 2018...
June 19, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29922752/effects-of-cusp-inclination-and-light-curing-time-on-microshear-bond-strength-of-a-dual-cure-self-adhesive-composite-cement-to-zirconia
#15
Chang-Yuan Zhang, Hao Yu, Xin-Wen Tong, Hui Cheng
PURPOSE: To evaluate the effect of cusp inclination and light-curing time on the microshear bond strength (μSBS) between zirconia and a dual-cure self-adhesive composite cement and zirconia. MATERIALS AND METHODS: Forty U-shaped specimens with angled surfaces, simulating different cusp inclinations (0 degrees, 20 degrees, and 30 degrees), were fabricated from zirconia blocks (Zenostar, Wieland). The specimens were randomly divided into two groups (n = 20) according to different light-curing times of the adhesive composite cements (20 s and 40 s)...
2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29922570/mid-term-results-of-two-stage-revision-of-total-knee-arthroplasty-using-a-mobile-dynamic-cement-spacer-in-the-treatment-of-periprosthetic-infections
#16
Mohamed Ghanem, Christina Pempe, Dirk Zajonz, Andreas Roth, Christoph-Eckhard Heyde, Christoph Josten
Introduction: Infection of the knee joint after primary total knee arthroplasty is a serious complication. In this work, we would like to evaluate the mid-term results after two-stage revision of total knee replacement in periprosthetic infection using dynamic spacer, in particular with regard to the function of the knee joint after reimplantation. Patients and methods: In this retrospective study, we included patients who were treated in our clinic between 2005 and 2013 due to infection of the knee after total knee arthroplasty...
2018: GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW
https://www.readbyqxmd.com/read/29922446/comparison-of-the-stability-of-three-fixation-techniques-between-porous-metal-acetabular-components-and-augments
#17
N A Beckmann, R G Bitsch, M Gondan, M Schonhoff, S Jaeger
Objectives: In order to address acetabular defects, porous metal revision acetabular components and augments have been developed, which require fixation to each other. The fixation technique that results in the smallest relative movement between the components, as well as its influence on the primary stability with the host bone, have not previously been determined. Methods: A total of 18 composite hemipelvises with a Paprosky IIB defect were implanted using a porous titanium 56 mm multihole acetabular component and 1 cm augment...
April 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29922341/comparison-of-composite-resin-and-porcelain-inlays-for-restoration-of-noncarious-cervical-lesions-an-in-vitro-study
#18
Hui Theng Chee, Wan Zaripah Wan Bakar, Zuryati Ab Ghani, Bennett T Amaechi
Background: Composite resin (CR) currently is one of the most commonly used material in restoring noncarious cervical lesions (NCCL) due to its strength and esthetics color but has microleakage problem. The aim of this study is to compare in vitro the microleakage depth between CR and porcelain in restoring NCCL. Materials and Methods: This an in vitro study was done by preparing cavities on the buccocervical surface of 62 extracted premolar teeth which randomly assigned to two groups ( n = 31) where Group 1 was restored with nanocomposite and Group 2 was cemented with porcelain cervical inlays...
May 2018: Dental Research Journal
https://www.readbyqxmd.com/read/29922339/evaluation-of-retentive-strength-of-four-luting-cements-with-stainless-steel-crowns-in-primary-molars-an-in-vitro-study
#19
Iman Parisay, Yegane Khazaei
Background: Stainless steel crown (SSC) is the most reliable restoration for primary teeth with extensive caries. Retention is of great importance for a successful restoration and is provided by various factors such as luting cements. The aim of this study was to evaluate the retentive strength of SSC cemented with four different luting cements. Materials and Methods: In this in vitro study, A total of 55 extracted primary first molars were selected. Following crown selection and cementation (one with no cement and four groups cemented with resin, glass ionomer, zinc phosphate, and polycarboxylate), all the specimens were incubated and thermocycled in 5°C-55°C...
May 2018: Dental Research Journal
https://www.readbyqxmd.com/read/29921780/pore-structure-characterization-of-sodium-hydroxide-activated-slag-using-mercury-intrusion-porosimetry-nitrogen-adsorption-and-image-analysis
#20
Yibing Zuo, Guang Ye
The pore structure of alkali-activated slag has a significant influence on its performance. However, the literature shows insufficient studies regarding the suitability of different techniques for characterizing the pore structure and the influences of Na₂O and curing age on pore structure development. In pursuit of a better understanding, the pore structure of sodium hydroxide activated slag paste was characterized by multiple techniques, e.g., mercury intrusion porosimetry (MIP), nitrogen (N₂) adsorption, and scanning electron microscopy (SEM) image analysis...
June 19, 2018: Materials
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