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https://www.readbyqxmd.com/read/30337140/identification-of-virulence-factors-in-contact-lens-associated-bacteria-a-physiological-approach
#1
Iram Liaqat, Qurat-Ul-Ain Saleem, Hafiz Muhammad Tahir, Muhammad Arshad, Najma Arshad
PURPOSE: Wearing contact lens requires awareness about possible contaminants, the causative agents of multiple complications. The present study focused on identification of potential pathogens and presence of virulence associated markers in contact lens associated bacteria. METHODS: Bacterial contaminants were isolated from contact lenses or cleaning solutions collected from University students. Isolates were identified using conventional methods followed by 16S rRNA gene sequencing and screened for the presence of virulence factors which included capsular presence, adhesion, serum resistance, iron chelation, haemagglutination and hemolysis...
October 15, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/30328899/influence-of-ethanol-wet-dentin-adhesive-mode-of-application-and-aging-on-bond-strength-of-universal-adhesive
#2
Mauricio Yugo de Souza, Rebeca DI Nicoló, Eduardo Bresciani
The aim of this study was to evaluate the effect of ethanol on the bond longevity of a universal adhesive system to bovine dentin, under different modes of adhesive application and artificial aging. Bovine dentin was exposed, and the smear layer was standardized by sandpaper polishing. Specimens were randomly divided into 2 groups: ethanol (E) and non-ethanol (N). Groups were subdivided according to adhesive mode of application into etch-and-rinse (Er) and self-etching (S). Resin blocks were built onto the treated surface, and the specimens were stored in deionized water at 37°C for 48 h...
October 11, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/30327950/effect-of-air-blowing-time-and-long-term-storage-on-bond-strength-of-universal-adhesives-to-dentin
#3
Pipop Saikaew, Jiale Fu, A F M Almas Chowdhury, Ricardo M Carvalho, Hidehiko Sano
OBJECTIVES: To evaluate the effects of air-blowing time and storage time on microtensile bond strength (μTBS) of universal adhesives to dentin. MATERIALS AND METHODS: Ninety flat dentin surfaces from extracted human third molars were bonded with three universal adhesives (Clearfil Universal Bond-CU; G-Premio Bond-GP; Scotchbond Universal Adhesives-SB). Bonded dentin surfaces were air-dried for 5 s, 15 s, or 30 s followed by resin composite built-up. Resin-dentin beams were tested with μTBS test after different storage time in distilled water (24 h and 1 year)...
October 16, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/30317399/shear-bond-strength-and-interface-analysis-between-a-resin-composite-and-a-recent-high-viscous-glass-ionomer-cement-bonded-with-various-adhesive-systems
#4
Philippe Francois, Elsa Vennat, Stéphane Le Goff, Nathalie Ruscassier, Jean-Pierre Attal, Elisabeth Dursun
OBJECTIVE: This study investigated the shear bond strength (SBS) and interface between a resin composite and a new high-viscous glass ionomer cement (HV-GIC), a HV-GIC, a resin-modified glass ionomer cement (RM-GIC), a bulk-fill flowable composite, and a regular flowable composite bonded with various adhesive systems. METHODS AND MATERIALS: A resin composite (Filtek Z350) was bonded to a new HV-GIC (EQUIA Forte Fil) using various adhesive systems, including a universal adhesive in self-etch and etch-and-rinse mode (Scotchbond Universal), a two-step etch-and-rinse adhesive (Scotchbond 1-XT), a one-step self-etch adhesive (Optibond All-in-one) tested also after silane application (Monobond Plus), and a coating material (EQUIA Forte Coat)...
October 13, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/30314867/analysis-of-pre-test-failures-and-bond-strengths-of-seven-adhesive-systems-to-bovine-dentine-a-nine-year-novice-beginner-operator-study
#5
A Franz, S Lettner, D C Watts, A Graf, A Moritz, A Schedle
OBJECTIVE: The aims were to evaluate, via multi-year student cohorts: (i) the incidence of pre-test failures and (ii) shear bond strengths of single- and multi-step adhesives to bovine dentin. METHODS: The experiments were performed by cohorts of dental students (2008-2016). Each year the bond strengths of three dental adhesives to bovine dentin were tested. Four self-etching adhesives (Optibond-All-in-One, [OBAIO]; Optibond XTR [OBXTR]); Xeno V [XV]; Xeno V+ [XV+]; a three-step etch-and-rinse-system (Optibond FL, [OBFL]), a self-etch universal adhesive (Scotchbond Universal [SBU]) and a self-etch/etch-and-rinse adhesive (Xeno Select, [XS]) were included in the study...
October 9, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/30314611/effect-of-previous-photoactivation-of-the-adhesive-system-on-the-color-stability-and-mechanical-properties-of-resin-components-in-ceramic-laminate-veneer-luting
#6
Henrico Badaoui Strazzi Sahyon, Afonso Chimanski, Humberto Naoyuki Yoshimura, Paulo Henrique Dos Santos
STATEMENT OF PROBLEM: The color stability and mechanical properties of luting agents influence the esthetics and longevity of ceramic restorations. However, studies evaluating the color changes and mechanical properties of luting agents under ceramic laminates activated by using different methods are lacking. PURPOSE: The purpose of this in vitro study was to evaluate the effects of different modes of photoactivation on the nanohardness and elastic modulus of resin cements and dental adhesives and on the color stability of ceramic laminate veneers...
October 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/30312800/the-role-of-biomarkers-of-endothelial-activation-in-predicting-morbidity-and-mortality-in-patients-with-severe-sepsis-and-septic-shock-in-intensive-care-a-prospective-observational-study
#7
Yingying Fang, Chunsheng Li, Rui Shao, Han Yu, Qing Zhang
INTRODUCTION: Endothelial dysfunction plays an essential role in the pathogenesis of sepsis. The study aimed to illustrate the associations between the dynamic change (from day 1 to day 7) in biomarker concentration of endothelial dysfunction and outcomes in severe sepsis and septic shock in the intensive care unit (ICU). MATERIALS AND METHODS: We studied 102 patients enrolled in the Beijing Chao-yang Hospital affiliated with the Capital Medical University. A receiver operating characteristic (ROC) curve were used to assess the prognostic values of the circulating adhesion Angiopoietin-2/Angiopoietin-1 ratio (Ang-2/Ang-1) and Angiopoietin-1/Tie-2 ratio (Ang-1/Tie-2), intercellular adhesion molecule (ICAM)-1, vascular cell adhesion molecule (VCAM)-1 and thrombomodulin (TM)...
October 1, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/30308307/laparoscopic-oophorectomy-to-treat-pelvic-pain-following-ovary-sparing-hysterectomy-factors-associated-with-surgical-complications-and-pain-persistence
#8
Lucy Richards, Martin Healey, Claudia Cheng, Uri Dior
STUDY OBJECTIVE: To examine the surgical management and outcomes of patients treated laparoscopically for pelvic pain following ovary-sparing hysterectomy. DESIGN: Retrospective cohort study (Canadian Task Force II-2) SETTING: General gynecology unit at a tertiary university hospital. PATIENTS: A total of 99 patients from Jan 2008- Dec 2016 treated with laparoscopic oophorectomy for pelvic pain following ovary-sparing hysterectomy. INTERVENTIONS: Laparoscopic Oophorectomy MEASUREMENTS AND MAIN RESULTS: Patients undertaking surgery had a mean age of 48...
October 8, 2018: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/30307966/impact-of-oral-rehabilitation-on-the-quality-of-life-of-partially-dentate-elders-in-a-randomised-controlled-clinical-trial-2-year-follow-up
#9
Gerald McKenna, Patrick Finbarr Allen, Martina Hayes, Cristiane DaMata, Ciaran Moore, Michael Cronin
OBJECTIVE: This randomised clinical trial aimed to compare the impact of two different tooth replacement strategies for partially dentate older patients namely; removable partial dentures (RPDs) and functionally orientated treatment based on the shortened dental arch (SDA) concept, on Oral Health-related Quality of Life (OHrQOL). METHODS: 89 patients completed a randomised clinical trial. Patients were recruited in two centres: Cork University Dental Hospital (CUDH) and a Geriatric Day Hospital (SFDH)...
2018: PloS One
https://www.readbyqxmd.com/read/30306085/effect-of-mdp-based-primers-on-the-luting-agent-bond-to-y-tzp-ceramic-and-to-dentin
#10
Sheila Butler, Bernie Linke, Ysidora Torrealba
Purpose: The aim of this study was to evaluate the influence of multimode MDP-based primers and different application protocols on the bond strength of a representative resin cement to an yttrium stabilized tetragonal zirconia (Y-TZP) ceramic. Materials and Methods: The occlusal dentin from 60 human molars was exposed. The teeth and zirconia cylinders (N = 60) (3 mm of diameter; 4 mm of height) were divided into six groups (n = 10) according to the ceramic surface conditioning: (1) air abraded with SiO2 particles; (2) Z-Prime Plus; (3) air abraded with SiO2 particles + Z-Prime Plus; (4) air abraded with SiO2 particles + All-Bond Universal; (5) air abraded with SiO2 particles + ScotchBond Universal Adhesive; and (6) untreated zirconia...
2018: BioMed Research International
https://www.readbyqxmd.com/read/30305878/the-effect-of-orthodontic-bracket-pad-shape-on-shear-bond-strength-an-in-vitro-study-on-human-enamel
#11
Nirav Patel, Prashanti Bollu, Kishore Chaudhry, Karthikeyan Subramani
Background: To evaluate the effect of bracket pad shape on shear bond strength (SBS) of orthodontic brackets bonded to human enamel. Material and Methods: One hundred and five extracted human maxillary permanent molars were divided into 7 groups of 15 specimens per group (n=15). Each group of teeth was bonded with 6 different shaped WildSmiles® brackets (Star, Heart, Soccer ball, Football, Flower, and Diamond) and GAC® rectangle shaped brackets. Shear debonding force was measured with an Instron universal testing machine using a knife-edged chisel 24 hours after initial bonding...
August 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/30305870/shear-bond-strength-of-metal-brackets-to-ceramic-surfaces-using-a-universal-bonding-resin
#12
Roya Naseh, Maryam Afshari, Fereshteh Shafiei, Nima Rahnamoon
Background: Assure Plus is a recently introduced universal adhesive with the ability to bond to various restorations. This study compared the shear bond strength of brackets bonded to two types of ceramics using conventional bonding agent and Assure Plus. Surface damage caused by debonding was also evaluated. Material and Methods: In this in vitro study, 40 feldspathic and lithium disilicate ceramic discs were sandblasted, etched with 9.6% hydrofluoric acid and divided into two groups...
August 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/30300450/effect-of-reducing-acid-etching-duration-time-on-compressive-strength-and-bonding-of-a-universal-adhesive-to-calcium-silicate-cements
#13
F Shafiei, M Doozandeh, F Gharibpour, A Adl
AIM: To assess the effect of acid-etching duration time on the compressive strength, microstructure and shear bond strength of All-Bond Universal adhesive to MTA-Angelus (AMTA), and Biodentine (BD). METHODOLOGY: Forty-eight cylindrical specimens (4 mm in diameter, 6 mm in height) of AMTA in four groups and 48 specimens of BD in four groups (n=12) were prepared and stored for 72 h. The control groups were unetched whilst the three experimental groups were acid-etched for 5, 10 and 15 s, respectively, followed by compressive strength testing...
October 9, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/30298860/microtensile-bond-strengths-of-adhesively-bonded-polymer-based-cad-cam-materials-to-dentin
#14
Nuray Capa, Esra Can Say, Cansin Celebi, Ayca Casur
This in vitro study aimed to evaluate the effect of two different polymer-based CAD/CAM materials; resin-nano ceramic (Lava Ultimate [LVU]) and composite (CERASMART [CS]), their different surface pre-treatments, and use of different resin cements on the µTBS of adhesively bonded CAD/CAM onlays to dentin. CAD/CAM materials were cut into slabs and divided into five groups according to the surface pre-treatments applied: Silane Primer, OptiBond XTR adhesive, Silane Primer+OptiBond XTR adhesive, Single Bond Universal (SBU), and RelyX Ceramic Primer+SBU...
October 5, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/30298674/a-novel-approach-to-improve-repair-bond-strength-of-repaired-acrylic-resin-an-in-vitro-study-on-the-shear-bond-strength
#15
Masoumah S Qaw, Tahani H Abushowmi, Danah F Almaskin, Zahra A AlZaher, Mohammed M Gad, Fahad A Al-Harbi, Reem Abualsaud, Mahmoud M Ammar
PURPOSE: To evaluate the combined effect of mechanical surface treatment with intermediate bonding agents (methyl methacrylate [MMA] and silane coupling agents) and ZrO2 nanoparticle (nano-ZrO2 ) addition to repair material on the shear bond strength (SBS) of repaired denture bases. MATERIALS AND METHODS: Heat-polymerized acrylic resin was used to fabricate 130 cylindrical blocks (15 mm × 10 mm) and divided into a control group without treatment (C, n = 10), and 3 repair groups (n = 40/group) divided into specimens treated with alumina blasting alone (AB), specimens blasted with alumina combined with silane coupling agent (AB + SCA), or combined with MMA-based composite bonding agent (AB + MA)...
October 8, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/30294847/loop-ileostomy-reversal-after-laparoscopic-versus-open-rectal-resection
#16
Arie Sebastian, Douglas Stupart, David A Watters
BACKGROUND: One of the potential advantages of laparoscopic abdominal surgery is in reducing the development of adhesions, making later surgery easier. The purpose of this study is to determine whether using the laparoscopic versus open approach for a rectal resection with a diverting ileostomy affects the speed and safety of subsequent ileostomy reversal. METHODS: This is a retrospective study using patients who underwent ileostomy reversal following a rectal cancer resection with curative intent with a diverting ileostomy at the University Hospital Geelong between January 2006 and June 2017...
October 8, 2018: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/30294159/effect-of-laser-etching-and-spark-erosion-on-retention-and-resistance-of-partial-veneer-crown-copings-luted-with-adhesive-resin-cement
#17
Chandra Govindaraj Sarath, Sivanesan Karthikeyan Jagdish, Krishnan Murugesan, Balasubramaniam Muthukumar
Purpose: There has been less focus on methods to improve the clinical performance of partial veneer crowns. In this study, we wanted to explore the potential of two new surface treatment modalities (laser etching and spark erosion) for improving the longevity of partial veneer crowns. Material and Methods: Conventional partial veneer crown preparation was done on 90 extracted premolars by a single operator. All the samples used in the study were divided into three groups...
September 2018: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/30294153/physical-properties-of-heat-cure-denture-base-resin-after-incorporation-of-methacrylic-acid
#18
Kotha Sujitha, M Bharathi, S Lakshminarayana, Afsar Shareef, B Lavanya, V SivKumar
Introduction: Heat cure acrylic resins are the most commonly used denture base materials. The important limitation is they may act as reservoir of microorganisms. The adherence of microorganisms can be reduced by chemical modification of the surface charge of denture base resin. Incorporation of methacrylic acid (MA) in the denture base resin gives a negative surface charge. A denture base having a negative surface charge may hinder the initial adhesion of microorganisms through repulsive electrostatic forces...
September 2018: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/30294107/clinical-evaluation-of-self-adhering-flowable-composite-versus-conventional-flowable-composite-in-conservative-class-i-cavities-randomized-controlled-trial
#19
Omar Osama Shaalan, Eman Abou-Auf, Amira Farid El Zoghby
Background: Self-adhering flowable composite (SAFC) minimized the time-consuming application procedures encountered with the traditional adhesive systems and restorative materials. Self-adhering composite combines the merits of both adhesive and restorative material technologies (8th generation) in a single product, bringing new horizons, and ambitions to restorative procedures. Aim: The aim of this study was to evaluate the clinical performance of SAFC compared to conventional flowable composite in conservative Class I cavities...
September 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/30293689/do-collagen-cross-linkers-improve-dentin-s-bonding-receptiveness
#20
C Parise Gré, D Pedrollo Lise, A P Ayres, J De Munck, A Tezvergil-Mutluay, R Seseogullari-Dirihan, G C Lopes, K Van Landuyt, Bart Van Meerbeek
OBJECTIVES: Dentin biomodification using collagen cross-linkers has been proposed as one of the strategies to improve bond durability of adhesives to dentin. However, literature is not very consistent regarding their benefit, in particular when cross-linkers are applied in clinically realistic application times. This study investigated the effect of three cross-linkers on the mini-interfacial fracture toughness (mini-iFT) of four adhesives bonded to dentin following either etch&rinse (E&R) or self-etch (SE) modes...
October 4, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
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