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https://www.readbyqxmd.com/read/28213848/intraoperative-blood-pressure-changes-during-cemented-versus-uncemented-bipolar-hemiarthroplasty-for-displaced-femoral-neck-fracture-a-multi-center-cohort-study-the-effect-of-bone-cement-for-bipolar-hemiarthroplasty-in-elderly-patients
#1
Shuichi Miyamoto, Junichi Nakamura, Satoshi Iida, Tomonori Shigemura, Shunji Kishida, Isao Abe, Munenori Takeshita, Yoshitada Harada, Sumihisa Orita, Seiji Ohtori
INTRODUCTION: The purpose of this study was to compare the cemented bipolar hemiarthroplasty with uncemented about the change of intraoperative blood pressure and the incidence of major complications in elderly patients with femoral neck fracture. MATERIALS AND METHODS: This multiple center prospective cohort study included only patients with acute displaced femoral neck fracture (Garden stage III or IV). All patients were treated with cemented or uncemented bipolar hemiarthroplasty using modified Hardinge or Watson-Jones approach in the lateral decubitus position...
February 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28213184/forensic-applications-fluorescence-properties-of-tooth-coloured-restorative-materials-using-a-fluorescence-dslr-camera
#2
Ramya Kiran, James Chapman, Alexander Forrest, Marc Tennant, Laurence J Walsh
The objective of this study was to compare the fluorescence properties of dry and wet samples of contemporary tooth-coloured restorative materials using a fluorescence based DSLR camera and a variety of LEDs emitting different wavelengths of visible light as excitation sources. The materials examined included resin composites; ceramics and hybrid restorative materials such as ormocers, Vita Enamic™ and resin reinforced glass-ionomer cements. The levels of fluorescence for each sample under different combinations of incident light wavelengths and filters was analysed by using histogram data for colour channels from Adobe Photoshop software...
February 3, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28213100/effect-of-processing-conditions-of-dicalcium-phosphate-cements-on-graft-resorption-and-bone-formation
#3
Zeeshan Sheikh, Yu Ling Zhang, Faleh Tamimi, Jake Barralet
Dicalcium phosphate cements (brushite and monetite) are resorbable biomaterials with osteoconductive potential for bone repair and regeneration that have yet to gain widespread commercial use. Brushite can be converted to monetite by heat treatments additionally resulting in various changes in the physico-chemical properties. However, since conversion is most commonly performed using autoclave sterilisation (wet heating), it is uncertain whether the properties observed for monetite as a result of heating brushite under dry conditions affect resorption and bone formation favourably...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28212980/biofilm-formation-and-release-of-fluoride-from-dental-restorative-materials-in-relation-to-their-surface-properties
#4
Sebastian Hahnel, Andrei C Ionescu, Gloria Cazzaniga, Marco Ottobelli, Eugenio Brambilla
OBJECTIVES: To elucidate the impact of surface properties and the release of fluoride from different glass ionomer cements on biofilm formation. METHODS: Standardized specimens manufactured from various classes of glass ionomer cements (GICs), a resin-based composite (RBC), and human enamel were subjected to surface analyses. Subsequent to simulation of salivary pellicle formation, Streptococcus mutans biofilm formation was initiated using a drip flow reactor for 48h and 96h...
February 14, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28212454/clinical-comparison-of-screw-retained-and-screwless-morse-taper-implant-abutment-connections-one-year-postloading-results
#5
Esma Geckili, Onur Geckili, Hakan Bilhan, Omer Kutay, Tayfun Bilgin
PURPOSE: The purpose of this study was to clinically evaluate the screwless Morse taper implant-abutment connection type, in which the retention screw is totally eliminated, in terms of stability, success, periodontal parameters, and marginal bone levels after 1 year of function by comparing it with a passive fit internal implant-abutment connection, wherein a space exists between the matching components. MATERIALS AND METHODS: Each edentulous subject received an implant with a screwless Morse taper connection (MT) in the left canine area of the mandible and an implant with a screw-retained implant-abutment connection (SR) in the right canine area of the mandible...
February 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28210443/evaluation-of-the-effect-of-adding-micro-hydroxyapatite-and-nano-hydroxyapatite-on-the-microleakage-of-conventional-and-resin-modified-glass-ionomer-cl-v-restorations
#6
Farahnaz Sharafeddin, Negar Feizi
BACKGROUND: Pulpal reaction to restorative materials depends on marginal microleakage, which is a dynamic phenomenon that allows bacteria and fluids to traverse across the tooth-restoration interface. Glass-ionomer cement (GIC) exhibits low microleakage due to direct bonding to tooth structures. Hydroxyapatite (HAP) based on the similarity with tooth structure may decrease the microleakage. The aim of this in vitro study was to evaluate marginal microleakage of a mixture of conventional and resin-modified glass-ionomer (RMGI) with micro- and nano-HAP...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28209274/long-term-durability-of-ceramic-tri-condylar-knee-implants-a-minimum-15-year-follow-up
#7
Shinichiro Nakamura, Hiromu Ito, Kenji Nakamura, Shinichi Kuriyama, Moritoshi Furu, Shuichi Matsuda
BACKGROUND: Ceramic bearings are not commonly used in total knee arthroplasty (TKA). So far, little information is available about whether long-term survivorship and good clinical outcomes can be ensured with ceramic knee implants. The purposes of the present study were to evaluate the clinical and radiological outcomes, and to assess the long-term durability of a ceramic tri-condylar implant. METHODS: A total of 507 consecutive TKAs were carried out using a ceramic tri-condylar femoral implant...
January 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28209008/effect-of-resin-bonded-luting-agents-influencing-marginal-discrepancy-in-all-ceramic-complete-veneer-crowns
#8
Dhanraj Ganapathy, Anusha Sathyamoorthy, Hemalatha Ranganathan, Karthikeyan Murthykumar
INTRODUCTION: Marginal discrepancy severely affects the long term success of All ceramic complete veneer crowns. The precise role of resin luting agents influencing this phenomenon needs to be explored further. AIM: To estimate and compare the marginal discrepancy in CAD/CAM processed All ceramic complete veneer crowns prior and following luting with resin bonded luting agents. MATERIALS AND METHODS: Extracted human maxillary first premolars were randomly allocated into four groups of 27 samples each Viz...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28209001/comparative-evaluation-of-fluoride-releasing-ability-of-various-restorative-materials-after-the-application-of-surface-coating-agents-an-in-vitro-study
#9
Gvs Kishore, A J Sai-Sankar, Mjs Pratap-Gowd, M Sridhar, Kakarla Pranitha, V S Sai-Krishna
INTRODUCTION: Fluoride plays a key role in prevention of dental caries and is also an essential element for oral health promotion both in children and adults. AIM: The aim of the present study was to evaluate the effect of surface coating (petroleum jelly, G-Coat Plus) on the fluoride releasing property of conventional Glass Ionomer Cement (GIC) and Zirconomer. MATERIALS AND METHODS: A total of 30 disk shaped brass mold specimens (6±0.1mm in diameter and 2±0...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207616/percutaneous-kyphoplasty-in-the-treatment-of-osteoblastic-related-spinal-metastases
#10
Hong-Tao Zhang, Guang-Dong Chen, Hui-Lin Yang, Zong-Ping Luo
STUDY DESIGN: A retrospective study. OBJECTIVE: To evaluate the feasibility, efficacy, and safety of percutaneous kyphoplasty (PKP) for the treatment of painful osteoblastic-related spinal metastases unresponsive to conservative treatments. SUMMARY OF BACKGROUND DATA: PKP represents a powerful tool in the management of oncology patients who suffer from painful osteolytic spinal lesions. However, to our knowledge, there have been no reports on the role of PKP in the treatment of osteoblastic metastatic spinal lesions...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28206891/survival-of-adhesive-restorations-for-primary-molars-a-systematic-review-and-metaanalysis-of-clinical-trials
#11
Ana Paula Santos, Ianny K D Moreira, Ana Carolina Scarpelli, Isabela A Pordeus, Saul M Paiva, Carolina C Martins
PURPOSE: The purpose of this study was to assess the scientific evidence regarding the survival and clinical performance of adhesive materials for primary molars, comparing composite resin (CR), conventional glass ionomer cement (GIC), resin-modified glass ionomer (RMGIC), silver-reinforced glass ionomer cement, and compomer. METHODS: Six databases were searched without restrictions regarding language or year of publication. Meta-analysis was conducted; risk ratios (RRs) and 95 percent confidence intervals (95% CI) were calculated...
October 15, 2016: Pediatric Dentistry
https://www.readbyqxmd.com/read/28203013/-curing-mode-of-universal-adhesives-affects-the-bond-strength-of-resin-cements-to-dentin
#12
Z R Fu, F C Tian, L Zhang, B Han, X Y Wang
OBJECTIVE: To determine the effects of curing mode of one-step and two-step universal adhesives on the micro-tensile bond strength (μTBS) of different dual-cure resin cements to dentin. METHODS: One-step universal adhesive Single Bond Universal (SBU), and two-step universal adhesive OptiBond Versa (VSA) were chosen as the subjects, one-step self-etching adhesive OptiBond All in One (AIO) and two-step self-etching adhesive Clearfil SE Bond (SEB) were control groups, and two dual-cure resin cements RelyX Ultimate (RLX) and Nexus 3 Universal (NX3) were used in this study...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202999/-changes-of-productions-of-energy-metabolism-in-masseter-of-rats-induced-by-occlusal-interference
#13
X X Xu, Y Cao, K Y Fu, Q F Xie
OBJECTIVE: To investigate the effect of occlusal interference on the energy metabolism of masticatory muscle by studying the changes of adenosine triphosphate (ATP), adenosine diphosphate (ADP), inosine monophosphate (IMP), phosphocreatine, creatine, lactate and pH level in masseter muscles of rats after occlusal interference. METHODS: Fifty male Sprague-Dawley rats were randomly assigned into experimental group (n=40) and control group (n=10). In experimental group, 0...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28202208/survivorship-analysis-of-eighty-revised-hip-arthroplasties-with-the-impaction-grafting-technique-using-whole-femoral-head-allografts-with-the-articular-cartilage
#14
Ahmed Fadulelmola, Efstathios Drampalos, John Hodgkinson, Mukesh Hemmady
BACKGROUND: Acetabular impaction bone grafting aims to restore anatomy in hip revision surgery. This is an effective but expensive and time-consuming technique. Usually, the articular cartilage is removed from the femoral head allograft. We aimed to reproduce the same results retaining the cartilage of the allograft. METHODS: Eighty acetabular revisions using impacted morselized bone graft retaining the articular cartilage and a cemented cup were studied retrospectively...
January 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28198977/degree-of-conversion-and-bond-strength-of-resin-cements-to-feldspathic-ceramic-using-different-curing-modes
#15
Veridiana Resende Novais, Luís Henrique Araújo Raposo, Rafael Resende de Miranda, Camila de Carvalho Almança Lopes, Paulo Cézar Simamoto, Carlos José Soares
Objective: The aim of this study was to assess the performance of resin cements when different curing modes are used, by evaluating the degree of conversion and bond strength to a ceramic substrate. Material and Methods: Three resin cements were evaluated, two dual-cured (Variolink II and RelyX ARC) and one light-cured (Variolink Veneer). The dual-cured resin cements were tested by using the dual activation mode (base and catalyst) and light-activation mode (base paste only)...
January 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28198970/is-the-bonding-of-self-adhesive-cement-sensitive-to-root-region-and-curing-mode
#16
Thaynara Faelly Boing, Giovana Mongruel Gomes, João Carlos Gomes, Alessandra Reis, Osnara Maria Mongruel Gomes
Objectives: To evaluate the influence of two curing techniques on the degree of conversion (DC) of resin cements and on bond strength (BS) of fiber posts in different regions of root dentin. Material and Methods: Twenty single-rooted premolars were endodontically treated, and the post spaces were prepared. The roots were randomly divided into two groups (n=10), according to the activation mode of the resin cement RelyX™ U200 (3M ESPE Saint Paul, MN, USA): conventional (continuous activation mode) and soft-start activation mode (Ramp)...
January 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28197990/a-chlorhexidine-releasing-epoxy-based-coating-on-titanium-implants-prevents-staphylococcus-aureus-experimental-biomaterial-associated-infection
#17
M Riool, A J Dirks, V Jaspers, L de Boer, T J Loontjens, C M van der Loos, S Florquin, I Apachitei, L N Rijk, H A Keul, S A Zaat
Prevention of biomaterial-associated infections (BAI) remains a challenging problem, in particular due to the increased risk of resistance development with the current antibiotic-based strategies. Metallic orthopaedic devices, such as non-cemented implants, are often inserted under high mechanical stress. These non-cemented implants cannot be protected by e.g. antibioticreleasing bone cement or other antimicrobial approaches, such as the use of bioactive glass. Therefore, in order to avoid abrasion during implantation procedures, we developed an antimicrobial coating with great mechanical stability for orthopaedic implants, to prevent Staphylococcus aureus BAI...
February 14, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28196604/addition-of-bioactive-glass-to-glass-ionomer-cements-effect-on-the-physico-chemical-properties-and-biocompatibility
#18
T De Caluwé, C W J Vercruysse, I Ladik, R Convents, H Declercq, L C Martens, R M H Verbeeck
OBJECTIVES: Glass ionomer cements (GICs) are a subject of research because of their inferior mechanical properties, despite their advantages such as fluoride release and direct bonding to bone and teeth. Recent research aims to improve the bioactivity of the GICs and thereby improve mechanical properties on the long term. In this study, two types of bioactive glasses (BAG) (45S5F and CF9) are combined with GICs to evaluate the physico-chemical properties and biocompatibility of the BAG-GIC combinations...
February 10, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28196165/effect-of-cervical-collar-removal-on-the-fracture-load-of-anterior-zirconia-crowns
#19
Fernanda Campos, Mayra Cardoso, Renata Marques de Melo, Marco Antonio Bottino, Rodrigo Oa Souza
The objective of this study was to assess the influence of the extension of collar and fatigue cycling on the fracture load of anterior zirconia crowns. A total of 60 anterior full-crown preparations (central incisor) were machined in glass fiber-filled epoxy resin. Zirconia copings were designed and milled using computer-aided design/computer-assisted manufacture (thickness: buccal = 0.62 mm, lingual = 0.65 mm, incisal = 0.72 mm). The cervical collars (occlusogingival height = 0.8 mm, buccolingual width = 1...
March 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28196158/hybrid-implants-in-healthy-and-periodontally-compromised-patients-a-preliminary-clinical-and-radiographic-study
#20
Sergio Spinato, Fabio Bernardello, Paolo Sassatelli, Davide Zaffe
This preliminary clinical and radiographic study examined the survival of, the marginal bone loss (MBL) around, and the influence of prosthetic abutment height (AH) on MBL around hybrid implants placed in two groups of partially edentulous patients: healthy (HPs) and periodontally compromised (PCPs) patients. A total of 93 patients requiring single or multiunit implant restoration, in the mandible or maxilla, were treated while undergoing cement-retained prosthetic restoration. A total of 54 implants (35 in the maxilla and 19 in the mandible) were placed in 45 HPs, and 56 implants (31 in the maxilla and 25 in the mandible) in 48 PCPs...
March 2017: International Journal of Periodontics & Restorative Dentistry
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