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https://www.readbyqxmd.com/read/29664201/rare-blood-donor-needed
#1
Richard R Gammon, Harold Alvarez, Nancy Benitez
BACKGROUND: Here, we describe a 14-year-old male with leukocyte adhesion deficiency type 2 who was transferred to a university hospital with anemia (hemoglobin 6 g/dL) and multiple singular abscesses refractory to antimicrobials. CASE REPORT: As leukocyte adhesion deficiency type 2 is associated with Bombay phenotype, the patient's red blood cells (RBCs) were tested with commercial anti-H lectin Ulex europaeus. An allogeneic adsorption with phenotype-matched cells was performed...
April 17, 2018: Transfusion
https://www.readbyqxmd.com/read/29661578/optimization-of-the-etch-and-rinse-technique-new-perspectives-to-improve-resin-dentin-bonding-and-hybrid-layer-integrity-by-reducing-residual-water-using-dimethyl-sulfoxide-pretreatments
#2
Thiago Henrique Scarabello Stape, Leo Tjäderhane, Gabriel Abuna, Mário Alexandre Coelho Sinhoreti, Luís Roberto Marcondes Martins, Arzu Tezvergil-Mutluay
OBJECTIVE: To determine whether bonding effectiveness and hybrid layer integrity on acid-etched dehydrated dentin would be comparable to the conventional wet-bonding technique through new dentin biomodification approaches using dimethyl sulfoxide (DMSO). METHODS: Etched dentin surfaces from extracted sound molars were randomly bonded in wet or dry conditions (30s air drying) with DMSO/ethanol or DMSO/H2 O as pretreatments using a simplified (Scotchbond Universal Adhesive, 3M ESPE: SU) and a multi-step (Adper Scotchbond Multi-Purpose, 3M ESPE: SBMP) etch-and-rinse adhesives...
April 13, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29658661/-biomechanical-and-biocompatible-enhancement-of-reinforced-calcium-phosphate-cement-via-rgd-peptide-grafted-chitosan-nanofibers
#3
Yang Huang, Jinsong Kong, Xiaokang Gong, Xin Zheng, Haibao Wang, Jianwei Ruan
<b>Objective:</b> To analysis the biomechanical and biocompatible properties of calcium phosphate cement (CPC) enhanced by chitosan short nanofibers(CSNF) and Arg-Gly-Asp (RGD). <b>Methods:</b> Chitosan nanofibers were prepared by electrospinning, and cut into short fibers by high speed dispersion. CPC with calcium phosphorus ratio of 1.5:1 was prepared by Biocement D method. The composition and structure of CPC, CSNF, RGD modified CSNF (CSNF-RGD), CSNF enhanced CPC (CPC-CSNF), RGD modified CPC-CSNF (CPC-CSNF-RGD) were observed by infrared spectrum, X-ray diffraction (XRD) and scan electron microscopy (SEM)...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29657518/influence-of-light-activation-of-simplified-adhesives-on-the-shear-bond-strength-of-resin-cements-to-a-leucite-reinforced-ceramic
#4
Adilson Yoshio Furuse, Cassiana Koch Scotti, Alfredo Llerena-Icochea, Juliana Fraga Soares Bombonatti, Gisele Aihara Haragushiku, Carla Castiglia Gonzaga
Objective: This study aims to evaluate the influence of the light activation of simplified adhesives on the shear bond strength of resin cements to a glass-ceramic. Three factors were evaluated: (1) cement in two levels (light cured and dual cured); (2) adhesive in two levels (Single Bond 2 and Single Bond Universal), and (3) light activation in two levels (yes or no). Materials and Methods: Thirty-two 1-mm thick slices of a leucite-reinforced glass-ceramic (IPS Empress CAD) were divided into eight groups according to adhesive (Single Bond 2 or Single Bond Universal), cement (AllCem Veneer or AllCem), and light activation of the adhesive before application of the cement (yes or no)...
January 2018: European Journal of Dentistry
https://www.readbyqxmd.com/read/29607618/effects-of-adhesive-used-as-modeling-liquid-on-the-stability-of-the-color-and-opacity-of-composites
#5
Fernanda Santos Araujo, Mellany Cristie Ramos Barros, Márcia Luciana Carregosa Santana, Ludmila Smith de Jesus Oliveira, Paula Fernanda Damasceno Silva, Giana da Silveira Lima, André Luis Faria-E-Silva
OBJECTIVE: This study evaluated the effects of adhesive type used as modeling liquid on the stability of the color and opacity of composites submitted to thermal cycling in staining solutions followed by a bleaching procedure. METHODS: Thirty cylinder-shaped composite specimens (10 mm diameter × 1.5 mm thickness) were built using or not using (control) an adhesive (Adper Universal or Scotchbond Multipurpose) as the modeling liquid. After polishing procedures, the color and opacity were measured, and the specimens were submitted to 200 thermal cycles with 10 s of dwell time in baths of grape juice at 5°C, water at 37°C, and coffee at 55°C...
April 1, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29603698/does-erbiumiyttrium-aluminum-garnet-laser-to-enamel-improve-the-performance-of-etch-and-rinse-and-universal-adhesives
#6
Rudys R De Jesus Tavarez, Lorrany Lc Rodrigues, Ana C Diniz, Lucas M Lage, Carlos Rg Torres, Matheus C Bandeca, Leily M Firoozmand
AIM: This study aims to evaluate the effect of erbium: Yttrium-aluminum-garnet (Er:YAG) laser irradiation on the enamel microshear bond strength (μSBS), followed by the utilization of etch-and-rinse and universal adhesive systems. MATERIALS AND METHODS: A total of 32 molars were sectioned in the mesiodistal direction producing 64 samples that were randomized into two groups (n = 32): single bond 2 (SB2) (etch-and-rinse system; 3M), SB universal (SBU) (universal etching system; The SB2 and SBU groups were then divided into two subgroups (n = 16): (i) enamel was irradiated with an Er:YAG laser (λ = 2...
March 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29593793/soft-lithography-and-minimally-human-invasive-technique-for-rapid-screening-of-oral-biofilm-formation-on-new-microfabricated-dental-material-surfaces
#7
Marta Alvarez-Escobar, Sidónio C Freitas, Derek Hansford, Fernando J Monteiro, Alejandro Pelaez-Vargas
Introduction: Microfabrication offers opportunities to study surface concepts focused to reduce bacterial adhesion on implants using human minimally invasive rapid screening (hMIRS). Wide information is available about cell/biomaterial interactions using eukaryotic and prokaryotic cells on surfaces of dental materials with different topographies, but studies using human being are still limited. Objective: To evaluate a synergy of microfabrication and hMIRS to study the bacterial adhesion on micropatterned surfaces for dental materials...
2018: International Journal of Dentistry
https://www.readbyqxmd.com/read/29573389/-incidence-of-biological-accidents-at-work-and-immune-status-for-vaccine-preventable-diseases-among-resident-physicians-in-specialist-training-at-ferrara-university-hospital
#8
Armando Stefanati, Federica Brosio, Parvanè Kuhdari, Valeria Baccello, Paola De Paris, Marco Nardini, Piera Boschetto, Silvia Lupi, Giovanni Gabutti
The hospital as a work environment is particularly characterized by various risks for healthcare workers (HCWs). The main risk is represented by biological accidents, associated with the parenteral transmission of pathogens. Biological injuries can occur during the care service and the manipulation of biological fluids. Hepatitis B (and hepatitis D), hepatitis C and HIV are the most common infections transmitted by biological injuries. Physicians should acquire awareness of the risks associated with their professional activity during their training as medical residents (MRs)...
November 2017: Igiene e Sanità Pubblica
https://www.readbyqxmd.com/read/29573132/effects-of-different-etching-modes-on-the-nanoleakage-of-universal-adhesives-a-systematic-review-and-meta-analysis
#9
REVIEW
Kinga Kaczor, Agnieszka Gerula-Szymańska, Tomasz Smektała, Krzysztof Safranow, Katarzyna Lewusz, Alicja Nowicka
PURPOSE: The aim of this systematic review was to evaluate how etching modes affect the nanoleakage of universal adhesive from in vitro studies. MATERIALS AND METHODS: PubMed/MEDLINE, Web of Science, Scopus and Science Direct electronic databases were searched for in vitro studies that evaluated the nanoleakage of universal adhesives. A total of 511 (after duplicate removal) potentially relevant records were identified in the literature search. The titles and abstracts of the retrieved studies were screened by two independent researchers according to the main concept...
March 23, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29570027/high-bond-durability-of-universal-adhesives-on-glass-ceramics-facilitated-by-silane-pretreatment
#10
C Yao, H Yang, J Yu, L Zhang, Y Zhu, C Huang
OBJECTIVE: This study aimed to investigate the long-term effectiveness of ceramic-resin bonding with universal adhesives in non-silane-pretreated and silane-pretreated modes after 10,000 cycles of thermal aging. METHODS AND MATERIALS: All Bond Universal, Adhese Universal, Clearfil Universal Bond, and Single Bond Universal were selected. Etched lithium disilicate glass ceramics were prepared, randomly assigned to groups, and pretreated with or without ceramic primer containing silane coupling agent prior to the application of universal adhesive (ie, silane-pretreated or non-silane-pretreated mode)...
March 23, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29570019/effect-of-various-bleaching-agents-on-the-surface-composition-and-bond-strength-of-a-calcium-silicate-based-cement
#11
S Kucukkaya Eren, H Aksel, O Uyanık, E Nagas
This study aimed to evaluate the morphological and elemental changes that occur on the surface of calcium silicate-based cement (CSC) and to analyze the bond strength of composite resin to CSC after application of various bleaching agents. One hundred twenty-five CSC blocks (Biodentine) were prepared and randomly divided into five groups according to the bleaching agent applied over the material surface (n=25): SP-DW (sodium perborate-distilled water mixture), SP-HP (sodium perborate-3% hydrogen peroxide [H2 O2 ] mixture), CP (37% carbamide peroxide gel), HP (35% H2 O2 gel), and a control group (no bleaching agent)...
March 23, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29569456/is-laser-conditioning-a-valid-alternative-to-conventional-etching-for-aesthetic-brackets
#12
M F Sfondrini, G Calderoni, M C Vitale, P Gandini, A Scribante
AIM: ER:Yag lasers have been described as a more conservative alternative to conventional acid-etching enamel conditioning technique, when bonding conventional metallic orthodontic brackets. Since the use of aesthetic orthodontic brackets is constantly increasing, the purpose of the present report has been to test laser conditioning with different aesthetic brackets. MATERIALS AND METHODS: Study Design: Five different aesthetic brackets (microfilled copolymer, glass fiber, sapphire, polyoxymethylene and sintered ceramic) were tested for shear bond strength and Adhesive Remnant Index scores using two different enamel conditioning techniques (acid etching and ER:Yag laser application)...
March 2018: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29565827/the-effect-of-multiple-firings-on-the-shear-bond-strength-of-porcelain-to-a-new-millable-alloy-and-a-conventional-casting-alloy
#13
Mitra Farzin, Rashin Giti, Amin Asalforush-Rezaiye
This study compared the effect of multiple firings on the shear bond strength (SBS) of porcelain to the new millable alloy (Ceramill Sintron) and a conventional casting alloy (4-all). Thirty-six cylindrical cores (6.8 × 9 mm) were made of millable and castable alloy through CAD/CAM and casting techniques, respectively ( n = 18). In the center of each bar, a 4 × 4 × 2-mm shot of porcelain was fused. Having divided each group into 3 subgroups based on the number of firing cycles (3, 5, 7), the specimens were fixed in a universal testing machine and underwent a shear force test (1...
March 22, 2018: Materials
https://www.readbyqxmd.com/read/29564459/the-mechanism-and-universal-scaling-law-of-the-contact-line-friction-for-the-cassie-state-droplets-on-nanostructured-ultrahydrophobic-surfaces
#14
Lei Zhao, Jiangtao Cheng
Besides the Wenzel state, liquid droplets on micro/nanostructured surfaces can stay in the Cassie state and consequently exhibit intriguing characteristics such as a large contact angle, small contact angle hysteresis and exceptional mobility. Here we report molecular dynamics (MD) simulations of the wetting dynamics of Cassie-state water droplets on nanostructured ultrahydrophobic surfaces with an emphasis on the genesis of the contact line friction (CLF). From an ab initio perspective, CLF can be ascribed to the collective effect of solid-liquid retarding and viscous damping...
March 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29563438/effect-of-decontamination-and-cleaning-on-the-shear-bond-strength-of-high-translucency-zirconia
#15
Stephanie Krifka, Verena Preis, Martin Rosentritt
(1) Background: This study evaluated the bonding performance of high translucency zirconia after diverse surficial decontamination and cleaning procedures. (2) Methods: High translucency zirconia (LavaTM Esthetic) specimens (2.0 mm × 20 mm × 10 mm) were exposed to different surface treatments prior to bonding to CoCr cylinders (d = 5 mm, height = 3 mm). All surfaces were sandblasted (40 µm aluminum oxide, 2 bar) and treated with alcohol (al), saliva (s), saliva + water (sw), or saliva + NaOCl + water (sn) before bonding was performed with the following adhesive luting systems: RelyXTM Unicem 2 (RX), ScotchbondTM Universal (SBU) + RelyXTM Ultimate (RU) or Monobond Plus (MP) + Multilink® Automix (ML)...
November 14, 2017: Dentistry journal
https://www.readbyqxmd.com/read/29553123/effect-of-acid-erosion-on-enamel-bond-strength-of-self-etch-adhesives-and-sonic-velocity-measurement-of-enamel
#16
Chiaki Yabuki, Akitomo Rikuta, Ryosuke Murayama, Syunsuke Akiba, Soshi Suzuki, Toshiki Takamizawa, Hiroyasu Kurokawa, Masashi Miyazaki
The purpose of this study was to investigate the effect of acid erosion on the bonding performance of universal adhesives. Freshly extracted bovine teeth were cut into enamel slabs and assigned to either the Er or the control group. Specimens in the Er group were immersed in citric acid solution (pH 2.1) twice a day and stored in artificial saliva, while control specimens were simply stored in artificial saliva. Differences in the mean values between the control and Er groups were greater than expected, despite accounting for the effect of differences in the adhesive systems (p=0...
March 17, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/29546812/shear-bond-strength-of-ceramic-brackets-bonded-to-surface-treated-feldspathic-porcelain-after-thermocycling
#17
Pinar Cevik, Oguz Eraslan, Kursat Eser, Suleyman Tekeli
PURPOSE: The aim of this study was to evaluate the effect of six different surface conditioning methods on the shear bond strength of ceramic brackets bonded to feldspathic porcelain. MATERIALS AND METHODS: A total of 60 feldspathic porcelain disks were fabricated and divided into six subgroups including 10 specimens in each. Specimens were first treated one of the following surface conditioning methods, namely, 37% phosphoric acid (G-H3PO4), 9.4% hydrofluoric acid (G-HF), grinding with diamond burs (G-Grinding), Nd:YAG laser (G-Nd:YAG), Airborne-particle abrasion (G-Abrasion)...
March 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29545648/il-1%C3%AE-as-mucosal-vaccine-adjuvant-the-specific-induction-of-tissue-resident-memory-t-cells-improves-the-heterosubtypic-immunity-against-influenza-a-viruses
#18
D Lapuente, M Storcksdieck Genannt Bonsmann, A Maaske, V Stab, V Heinecke, K Watzstedt, R Heß, A M Westendorf, W Bayer, C Ehrhardt, M Tenbusch
A universal influenza vaccine must provide protection against antigenically divergent influenza viruses either through broadly neutralizing antibodies or cross-reactive T cells. Here, intranasal immunizations with recombinant adenoviral vectors (rAd) encoding hemagglutinin (HA) and nucleoprotein (NP) in combination with rAd-Interleukin-(IL)-1β or rAd-IL-18 were evaluated for their efficacy in BALB/c mice. Mucosal delivery of rAd-IL-1β enhanced HA-specific antibody responses including strain-specific neutralizing antibodies...
March 15, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29545228/does-the-presence-of-endometriosis-cause-a-challenge-for-transvaginal-oocyte-retrieval-procedure-a-comparison-between-patients-with-endometriosis-and-without-endometriosis
#19
Işıl Kasapoğlu, Pınar Türk, Aylin Dayan, Gürkan Uncu
OBJECTIVE: The aim of the study was to compare patients with endometriosis to those without endometriosis regarding performance rates, difficulties and complications associated with transvaginal oocyte retrieval (TVOR) procedures. MATERIAL AND METHODS: A prospective cohort study was conducted at the IVF Unit of the Division of Reproductive Endocrinology and Infertility Department of an University Hospital. Fifty-eight patients with endometriosis and 61 patients without endometriosis underwent a TVOR procedure consecutively...
March 16, 2018: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/29528233/multifunctional-surface-modification-of-nanodiamonds-based-on-dopamine-polymerization
#20
Yun Zeng, Wenyan Liu, Zheyu Wang, Srikanth Singamaneni, Risheng Wang
Surface functionalization of nanodiamonds (NDs), which is of great interest in advanced material and therapeutic applications, requires the immobilization of functional species, such as nucleic acids, bioprobes, drugs, and metal nanoparticles onto NDs' surfaces to form stable nanoconjugates. However, it is still challenging to modify the surface of NDs due to the complexity of their surface chemistry and the low density of each functional group on the surfaces of NDs. In this work, we demonstrate a general applicable surface functionalization approach for the preparation of ND-based core-shell nanoconjugates using dopamine polymerization...
March 12, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
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