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https://www.readbyqxmd.com/read/28444018/effect-of-nanotechnology-in-self-etch-bonding-systems-on-the-shear-bond-strength-of-stainless-steel-orthodontic-brackets
#1
Shaza M Hammad, Noha El-Wassefy, Ahmed Maher, Shafik M Fawakerji
OBJECTIVE: To evaluate the effect of silica dioxide (SiO2) nanofillers in different bonding systems on shear bond strength (SBS) and mode of failure of orthodontic brackets at two experimental times. METHODS: Ninety-six intact premolars were divided into four groups: A) Conventional acid-etch and primer Transbond XT; B) Transbond Plus self-etch primer; and two self-etch bonding systems reinforced with silica dioxide nanofiller at different concentrations: C) Futurabond DC at 1%; D) Optibond All-in-One at 7%...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28444011/prototype-to-measure-bracket-debonding-force-in-vivo
#2
Jéssika Lagni Tonus, Fernanda Borguetti Manfroi, Gilberto Antonio Borges, Eduardo Correa Grigolo, Sérgio Helegda, Ana Maria Spohr
INTRODUCTION: Material biodegradation that occurs in the mouth may interfere in the bonding strength between the bracket and the enamel, causing lower bond strength values in vivo, in comparison with in vitro studies. OBJECTIVE: To develop a prototype to measure bracket debonding force in vivo and to evaluate, in vitro, the bond strength obtained with the prototype. METHODS: A original plier (3M Unitek) was modified by adding one strain gauge directly connected to its claw...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28439578/long-term-bond-strength-of-self-etch-adhesives-to-normal-and-artificially-eroded-dentin-effect-of-relative-humidity-and-saliva-contamination
#3
Fabienne Amsler, Anne Peutzfeldt, Adrian Lussi, Simon Flury
PURPOSE: To investigate the effect of relative humidity and saliva contamination on short- and long-term bond strength of two self-etch adhesives to normal and artificially eroded dentin. MATERIALS AND METHODS: A total of 480 dentin specimens were produced from extracted human molars. Half of the specimens (n = 240) were left untreated (normal dentin) whereas the other half (n = 240) were artificially eroded. The specimens were treated with Clearfil SE Bond (CSE) or Scotchbond Universal (SBU), and composite (Filtek Z250) was applied to the treated dentin surface under four experimental conditions: at a relative humidity of 45% or 85% without/with human saliva contamination...
April 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28439576/bond-strength-to-eroded-enamel-and-dentin-using-a-universal-adhesive-system
#4
Fabiana Cares Frattes, Marina Gullo Augusto, Carlos Rocha Gomes Torres, Cesar Rogério Pucci, Alessandra Bühler Borges
PURPOSE: To evaluate the influence of previous acid etching on the bond strength of a self-etch universal adhesive system on sound and eroded enamel and dentin. MATERIALS AND METHODS: Flat enamel and dentin surfaces were obtained from bovine incisors (n = 44) and divided into two groups according to the exposure to erosive conditions: sound (without erosion) and eroded (after erosive challenge with 0.3% citric acid, pH 2.6, 5 min, 4x/day, 5 days). Each group was then divided into two subgroups (n = 11) according to the application or not of 37% phosphoric acid before applying a universal self-etch adhesive...
April 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28439575/polymerization-efficacy-affects-the-long-term-mini-interfacial-fracture-toughness
#5
Pong Pongprueksa, Jan De Munck, Bruno C Barreto, Bart Van Meerbeek
PURPOSE: To evaluate the effect of the type and concentration of photo-initiator on the long-term bonding efficacy to dentin in terms of mini-interfacial fracture toughness (mini-iFT). MATERIALS AND METHODS: The bonding efficacy of the one-step self-etch (SE) adhesive Clearfil S3 Bond Plus and four derivative experimental adhesives (Leuven University Bond [LUB]), which were similar in composition except for the (co)photo-initiators (all prepared by Kuraray Noritake), containing 2...
April 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28438450/monocryl-and-dermabond-vs-staples-in-total-hip-arthroplasty-performed-through-a-lateral-skin-incision-a-randomized-controlled-trial-using-a-patient-centered-assessment-tool
#6
Raymond A Glennie, Abigail Korczak, Douglas D Naudie, Dianne M Bryant, James L Howard
BACKGROUND: There are various possible methods of skin closure in total hip arthroplasty (THA) through a lateral skin incision. The cost and time required for each can vary between techniques. The objective of this study was to determine whether there is a difference in patient and surgeon rating of scar outcome using a combination of subcuticular suture and skin adhesive (subcuticular MONOCRYL and DERMABOND [SMD]) vs staples for skin closure after THA. METHODS: Patients undergoing THA were recruited from a university hospital...
February 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28435367/-ormocer-an-innovative-technology-a-replacement-for-conventional-cements-and-veneer-a-comparative-in-vitro-analysis
#7
Vini Rajeev, Rajeev Arunachalam, Sanjna Nayar, P R Arunima, Sivadas Ganapathy, Vaishnavi Vedam
OBJECTIVE: This in vitro study was designed to assess shear bond strength (SBS) of ormocer flowable (OF) resin as a luting agent, ormocer as an indirect veneer material with portrayal of modes of failures using scanning electron microscope (SEM). MATERIALS AND METHODS: Sixty maxillary central incisors were divided into Group I, II, and III with 20 samples each based on luting cement used. They were OF, self-adhesive (SA) cement, and total etch (TE) cement. These groups were subdivided into "a" and "b" of ten each based on the type of veneering materials used...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28430714/ultrasound-molecular-imaging-of-inflammation-in-mouse-abdominal-aorta
#8
Shiying Wang, Sunil Unnikrishnan, Elizabeth B Herbst, Alexander L Klibanov, Frank William Mauldin, John A Hossack
OBJECTIVES: The aim of this study was to demonstrate a new clinically translatable ultrasound molecular imaging approach, modulated acoustic radiation force-based imaging, which is capable of rapid and reliable detection of inflammation as validated in mouse abdominal aorta. MATERIALS AND METHODS: Animal studies were approved by the Institutional Animal Care and Use Committee at the University of Virginia. C57BL/6 mice stimulated with tumor necrosis factor α, or fed with a high-fat diet, were used as inflammation (MInflammation) and diet-induced obesity (DIO) (MDIO) models, respectively...
April 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28426721/diagnosis-treatment-and-prognosis-of-small-bowel-volvulus-in-adults-a-monocentric-summary-of-a-rare-small-intestinal-obstruction
#9
Xiaohang Li, Jialin Zhang, Baifeng Li, Dehui Yi, Chengshuo Zhang, Ning Sun, Wu Lv, Ao Jiao
OBJECTIVES: Small bowel volvulus is a rare disease, which is also challenging to diagnose. The aims of this study were to characterize the clinical and radiological features associated with small bowel volvulus and treatment and to identify risk factors for associated small bowel necrosis. METHODS: Patients with small bowel volvulus who underwent operations from January 2001 to December 2015 at the First Affiliated Hospital of China Medical University (Shenyang, China) were reviewed...
2017: PloS One
https://www.readbyqxmd.com/read/28422602/does-bonding-approach-influence-the-bond-strength-of-universal-adhesive-to-dentin-of-primary-teeth
#10
Tathiane Larissa Lenzi, Fabio Zovico Maxnuck Soares, Rachel de Oliveira Rocha
OBJECTIVE: To evaluate the effect of bonding strategy on microtensile bond strength (μTBS) of a new universal adhesive system to primary tooth dentin. STUDY DESIGN: Flat dentin surfaces from 25 primary molars were assigned to 5 groups according to the adhesive and bonding approach: Adper Single Bond 2 (two-step etch-and-rinse adhesive) and Clearfil SE Bond (two-step self-etch system), as controls; Scotchbond Universal Adhesive-self-etch, dry or wet-bonding etch-and-rinse strategies...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28422367/microtensile-bond-strength-of-a-resin-cement-to-silica-based-and-y-tzp-ceramics-using-different-surface-treatments
#11
Alireza Keshvad, Seyed Mohammad Reza Hakimaneh
PURPOSE: To evaluate the effects of different surface treatments on the microtensile bond strength (μTBS) of bonding between resin cement and lithia or zirconia-based ceramics using an in vitro study. MATERIALS AND METHODS: Three zirconia ceramic blocks (IPS e.max ZirCAD) and three lithium disilicate ceramic blocks (IPS e.max CAD) were sintered and duplicated in resin composite. The zirconia specimens underwent various treatments (n = 1): (i) Sandblast + primer (ZiSa); (ii) sandblast + laser irradiation + primer (ZiSaLa); or (iii) laser irradiation + primer (ZiLa)...
April 19, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28419716/effect-of-dehydration-and-rehydration-intervals-on-fracture-resistance-of-reattached-tooth-fragments-using-a-multimode-adhesive
#12
Déborah Lousan do Nascimento Poubel, Júlio César Franco Almeida, Ana Paula Dias Ribeiro, Guilherme Brasil Maia, Jesús Maurício Gonzalez Martinez, Fernanda Cristina Pimentel Garcia
BACKGROUND/AIMS: The tooth fragment bonding technique, frequently used to restore traumatized teeth, may be affected by dehydration/rehydration periods. The aim of this study was to evaluate the effects of different dry and wet storage intervals on multimode adhesive bonding between reattached fragments and teeth. MATERIALS AND METHODS: Eighty-four bovine incisors were fractured and randomized into groups (n=12). After teeth fracturing, each specimen was assigned to one of the following groups: G0: control group (sound tooth); GA1 and GA2: 1-h dehydration and a 15-min or 24-h rewetting period, respectively; GB1 and GB2: 24-h dehydration and a 15-min or 24-h rewetting period, respectively; and GC: 1-h (GC1) or 24-h (GC2) dehydration period only...
April 17, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28416278/ai-2-quorum-sensing-negatively-regulates-rbf-expression-and-biofilm-formation-in-staphylococcus-aureus
#13
Ronghua Ma, Shuwan Qiu, Qiu Jiang, Haipeng Sun, Ting Xue, Gang Cai, Baolin Sun
Staphylococcus aureus is an important pathogen that is capable of forming biofilms on biomaterial surfaces to cause biofilm-associated infections. Autoinducer 2 (AI-2), a universal language for interspecies communication, is involved in a variety of physiological activities, although its exact role in Gram-positive bacteria, especially in S. aureus, is not yet thoroughly characterized. Herein we demonstrate that inactivation of luxS, which encodes AI-2 synthase, resulted in increased biofilm formation and higher polysaccharide intercellular adhesion (PIA) production compared with the wild-type strain in S...
April 6, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28412850/assessment-of-hysteroscopic-role-in-management-of-women-with-recurrent-pregnancy-loss
#14
M Elsokkary, M Elshourbagy, K Labib, M Ali
OBJECTIVES: To assess the hysteroscopic value in the management of intrauterine lesion in women with recurrent pregnancy loss. METHODS: This study done in Ain Shams Maternity Hospital after the approval of the research Ethics Committee, during the period between August 2014 to December 2015 where 200 non-pregnant women with a history of three or more consecutive unexplained first and second trimester miscarriages before 20 weeks were recruited from recurrent miscarriage clinic...
April 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28411456/urinary-bladder-injury-during-cesarean-delivery-maternal-outcome-from-a-contemporary-large-case-series
#15
Lina Salman, Shachar Aharony, Anat Shmueli, Arnon Wiznitzer, Rony Chen, Rinat Gabbay-Benziv
BACKGROUND: Urinary bladder injury is a rare complication during cesarean delivery. Little is known on maternal outcome following this injury. OBJECTIVE: To evaluate short and long-term maternal outcome following bladder injury during cesarean delivery. STUDY DESIGN: A retrospective case series of all pregnancies complicated by full-thickness bladder injury during cesarean delivery in a single university affiliated tertiary medical center (August 2007-June 2016)...
April 5, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28403370/adherence-and-factors-related-to-acceptance-of-alcohol-for-antiseptic-hand-rubbing-among-nursing-professionals
#16
Adriana Cristina de Oliveira, Camila Sarmento Gama, Adriana Oliveira de Paula
OBJECTIVE: Identify rates of adhesion and related factors to acceptance of an alcohol based preparation to hands antiseptic friction among nursing professionals in a unit of intensive therapy. METHOD: A cross-sectional study, which involved direct observation of hand hygiene opportunities and nursing professionals' completion of questionnaires, was conducted at a university hospital between January and July 2015. Descriptive and univariate analyses were performed, with a 5% significance level...
April 6, 2017: Revista da Escola de Enfermagem da U S P
https://www.readbyqxmd.com/read/28402733/effect-of-surface-treatment-silane-and-universal-adhesive-on-microshear-bond-strength-of-nanofilled-composite-repairs
#17
I A Fornazari, I Wille, E M Meda, R T Brum, E M Souza
PURPOSE: The aim of this study was to evaluate the effect of surface treatment and universal adhesive on the microshear bond strength of nanoparticle composite repairs. METHODS: One hundred and forty-four specimens were built with a nanofilled composite (Filtek Supreme Ultra, 3M ESPE). The surfaces of all the specimens were polished with SiC paper and stored in distilled water at 37°C for 14 days. Half of the specimens were then air abraded with Al2O3 particles and cleaned with phosphoric acid...
April 12, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28400888/macular-evaluation-w%C3%A4-th-spectral-domain-type-optic-coherence-tomography-in-eyes-with-acute-nonarteritic-ischemic-optic-neuropathy-at-the-presentation-visit
#18
Oya Donmez, Gamze Kocaoglu, Aylin Yaman, Meltem Soylev Bajin, Ali Osman Saatci
PURPOSE: To evaluate the macula with spectral domain type optic coherence tomography (OCT) in eyes with acute nonarteritic anterior ischemic optic neuropathy (NAION) at the presentation visit. METHODS: Medical charts of the 133 patients who received the diagnosis of acute NAION between January 2008 and July 2014 at the Neuro-ophthalmology unit of Dokuz Eylul University were reviewed retrospectively. Sixtythree patients within 30 days of symptom onset with available baseline spectral domain type macular OCT were included in this study...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28400596/the-effect-of-the-teeth-bleaching-with-35-hydrogen-peroxide-on-the-tensile-bond-strength-of-metal-brackets
#19
Giedre Trakiniene, Simona Daukontiene, Vytautas Jurenas, Vilma Svalkauskiene, Dalia Smailiene, Kristina Lopatiene, Tomas Trakinis
The objective of this study was to determine the effects of teeth bleaching on the tensile bond strength of metal brackets bonded with light-curing adhesive system to the human enamel. 40 recently extracted human permanent molars were used for the study. The mesial buccal surface of each tooth was used as a control group and the distal buccal surface was used as an experimental group. Control group surfaces were not submitted to bleaching, while experimental group surfaces were bleached with in-office bleaching material containing 35% hydrogen peroxide...
April 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28395008/derivation-and-validation-of-a-serum-biomarker-panel-to-identify-infants-with-acute-intracranial-hemorrhage
#20
Rachel Pardes Berger, Brian J Pak, Mariya D Kolesnikova, Janet Fromkin, Richard Saladino, Bruce E Herman, Mary Clyde Pierce, David Englert, Paul T Smith, Patrick M Kochanek
Importance: Abusive head trauma is the leading cause of death from physical abuse. Missing the diagnosis of abusive head trauma, particularly in its mild form, is common and contributes to increased morbidity and mortality. Serum biomarkers may have potential as quantitative point-of-care screening tools to alert physicians to the possibility of intracranial hemorrhage. Objective: To identify and validate a set of biomarkers that could be the basis of a multivariable model to identify intracranial hemorrhage in well-appearing infants using the Ziplex System...
April 10, 2017: JAMA Pediatrics
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