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https://www.readbyqxmd.com/read/30083206/the-micro-shear-bond-strength-of-various-resinous-restorative-materials-to-aged-biodentine
#1
Mohammad Hossein Nekoofar, Fariba Motevasselian, Mansoreh Mirzaei, Esmaeil Yassini, Hoda Pouyanfar, Paul Mh Dummer
Introduction: The type of materials and application time of veneering restorations on calcium silicate cements are important factors which influence the interfacial properties. The aim of this study was to measure the micro-shear bond strength of a resin composite (RC) using several adhesive systems and a resin-modified glass ionomer cement (RM-GIC) to different aged Biodentine specimens. Methods and Materials: A total of 15 Biodentine blocks were prepared and assigned to three aging periods: 12 min, one week and one month...
2018: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/30078245/-novel-mutations-of-itgb2-induced-leukocyte-adhesion-defect-type-1
#2
Y Lin, H Y Zheng, Y Y Xian, H Chang, K Lei, B T Wang, Q Y Zhang
Objective: To investigate the pathogenic mechanism of two novel ITGB2 mutations in leukocyte adhesion defect type 1 (LAD1). Methods: The clinical history and blood sample of an 11 years old patient admitted to Affiliated Hospital of Qingdao University in August 2014 were collected. Expression of CD18 (encoded by ITGB2) was analyzed by flow cytometry. Novel ITGB2 mutations were identified by next-generation sequencing technology and confirmed by Sanger sequencing. The functional effect of ITGB2 mutations was detected by PolyPhen2...
August 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/30077670/lactic-acid-oligomer-olla-grafted-gum-arabic-based-green-adhesive-for-structural-applications
#3
Neelima Tripathi, Vimal Katiyar
L-Lactic acid (LA)-grafted-gum arabic (GA) graft copolymer [OLLA-g-GA] was prepared by using microwave heating in which the hydrophilic GA was grafted with insitu grown lactic acid oligomer. The grafting at OH and NH groups in GA backbone with oligo-(l-lactic acid) (OLLA) chains proved with the help of FTIR and NMR analyses. The grafted GA was dispersed uniformly in OLLA due to the formation of amphiphile GA backbone grafted with OLLA chains, which is supported by XRD, SEM and TEM analyses. This synthesized OLLA-g-GA graft copolymer showed adhesive characteristics with various substrates such as glass and granite...
August 2, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/30066697/effect-of-platelet-rich-fibrin-and-free-gingival-graft-in-the-treatment-of-soft-tissue-defect-preceding-implant-placement
#4
Wael Ibraheem
INTRODUCTION: Free gingival graft is a procedure that is used to increase keratinized tissue around teeth and edentulous sites for future dental implants. Keratinized tissue is critical for maintainability of surgical site and flap management. Platelet-rich fibrin consists of bioactive and biological components, mainly composed of growth factors. Growth factors attract stem cells to the site of release and stimulate cell proliferation. Moreover, growth factors promote angiogenesis, which accelerates wound healing...
July 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/30066692/an-in-vitro-evaluation-of-shear-bond-strength-of-orthodontic-brackets-after-mouth-rinse
#5
Jaideep Singh, Ashish Joshi, Thomas Manjooran, Swetha Raghav, Ashesh Gautam, Jaladhi H Patel
AIMS: The aim of the study was to evaluate the shear bond strength (SBS) of orthodontic brackets after mouth rinsing. MATERIALS AND METHODS: Sixty orthodontically extracted maxillary premolar teeth were used in the present study. Buccal surfaces of all the teeth were bonded with orthodontic bracket. Later, each tooth was embedded into acrylic resin and stored in distilled water. All the teeth were randomly divided into four groups (group I: Artificial saliva, group II: Alcohol mouth rinse- Listerine, group III: Chlorhexidine (CHX) mouth rinse-Hexidine, and group IV: Herbal mouth rinse-Befresh) and stored in each solution for 12 hours...
July 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/30066016/effects-of-reducing-light-curing-time-of-a-high-power-led-device-on-shear-bond-strength-of-brackets
#6
Layene Figueiredo Almeida, Lidia Parsekian Martins, Renato Parsekian Martins
PURPOSE: To assess the effects of reducing the curing time of a high-power light-emitting diode (LED) unit (Valo, Ultradent, South Jordan, UT, USA) on shear bond strength (SBS) of metal brackets and on the amount of adhesive remnant of two orthodontic composites. METHODS: Eighty human premolars were divided into four groups (G1-4) according to curing time and composite: G1 (Transbond XT, 6 s), G2 (Opal Bond MV, 6 s), G3 (Transbond XT, 3 s), and G4 (Opal Bond MV, 3 s)...
July 31, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/30062001/adhesive-bacterial-amyloid-nanofiber-mediated-growth-of-metal-organic-frameworks-on-diverse-polymeric-substrates
#7
Cuizheng Zhang, Yingfeng Li, Hongliang Wang, Sanfeng He, Yiyi Xu, Chao Zhong, Tao Li
The development of a simple, robust, and generalizable approach for spatially controlled growth of metal-organic frameworks (MOFs) on diverse polymeric substrates is of profound technological significance but remains a major challenge. Here, we reported the use of adhesive bacterial amyloid nanofibers, also known as curli nanofibers (CNFs), major protein components of bacterial biofilms, as universal and chemically/mechanically robust coatings on various polymeric substrates to achieve controlled MOF growth with improved surface coverage up to 100-fold...
July 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/30056309/removal-forces-of-adhesively-and-self-adhesively-luted-implant-supported-zirconia-copings-depend-on-abutment-geometry
#8
Matthias Rödiger, Janine Kloß, Nikolaus Gersdorff, Ralf Bürgers, Sven Rinke
This in vitro study evaluated the effects of different abutment axial heights on the retentiveness of adhesively and self-adhesively luted zirconia copings. Ankylos implants were embedded in resin blocks. Two groups of titanium abutments ("long", height: 6.79 mm, taper: 4.8°; "short", height: 4.31 mm, taper: 4.8°; Compartis-ISUS, DeguDent) were used for the luting of CAD/CAM-fabricated zirconia copings (Compartis, DeguDent) with an adhesive (Multilink Automix; Ivoclar Vivadent) and a self-adhesive (RelyX Unicem; 3M ESPE) composite...
July 19, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/30051443/-operative-strategy-and-short-term-efficacy-of-recurrent-groin-hernia
#9
Xitao Wang, Gengwen Huang, Dingcheng Shen, Jiayan Lin, Caihong Ning, Xintong Cao, Liandong Ji, Yebin Lu, Wei Wei
OBJECTIVE: To explore the appropriate operative strategy in recurrent groin hernia repair. METHODS: Clinical and follow-up data of 82 patients with recurrent groin hernia undergoing operation at Department of Pancreatobiliary Surgery, Xiangya Hospital of Central South University from April 2010 to April 2017 were analyzed retrospectively. The operative approaches included laparoscopic transabdominal preperitoneal (TAPP) hernia repair, Lichtenstein repair and hybrid repair...
July 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/30047615/chemical-design-of-non-ionic-polymer-brushes-as-biointerfaces-poly-2-oxazine-s-outperform-both-poly-2-oxazoline-s-and-peg
#10
Giulia Morgese, Bart Verbraeken, Shivaprakash N Ramakrishna, Yvonne Gombert, Emma Cavalli, Jan-Georg Rosenboom, Marcy Zenobi-Wong, Nicholas D Spencer, Richard Hoogenboom, Edmondo Maria Benetti
The era of the poly(ethylene glycol) (PEG) brushes as a universal panacea for resisting non-specific protein adsorption and provide lubrication to surfaces is approaching an end. Intensive efforts to find alternative, more stable polymer-brush systems for the tailoring of biomaterials are underway. In the functionalization of medical devices and implants, in addition to preventing non-specific protein adsorption and cell adhesion, polymer-brush formulations are often required to generate highly lubricious films...
July 26, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/30047509/the-effect-of-different-cleaning-agents-on-saliva-contamination-for-bonding-performance-of-zirconia-ceramics
#11
Akifumi Takahashi, Tomohiro Takagaki, Takahiro Wada, Motohiro Uo, Toru Nikaido, Junji Tagami
The effects of contamination and cleaning methods on bonding of self-adhesive resin cement to zirconia ceramics were examined. Airborne particle-abraded zirconia (Zpex Smile) specimens were divided into the following four groups: control (con), contaminated with saliva and cleaned with tap water (HS), cleaned with Ivoclean (IC), and cleaned with Multi Etchant (ME). The pretreated specimens were bonded using three self-adhesive resin cements, and tensile bond strengths were measured using a universal testing machine at a crosshead speed of 2 mm/min...
July 26, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/30047506/effect-of-alumina-blasting-pressure-on-adhesion-of-cad-cam-resin-block-to-dentin
#12
Yuki Naruse, Tomohiro Takagaki, Naoko Matsui, Takaaki Sato, Masaomi Ikeda, Toru Nikaido, Junji Tagami
The aim of this study was to evaluate how alumina-blasting pressure affects the bond strength of CAD/CAM resin blocks (CRBs) to bovine dentin using two different types of resin cements. CRB slices were divided into three groups by alumina-blasting pressure, namely, untreated and 0.1 MPa and 0.2 MPa, and further divided into three subgroups by combination of CRBs surface treatment and types of cement: Scotchbond Universal and RelyX ultimate (RXB), Scotchbond Universal and RelyX unicem2 (U2B), ceramic primer and RelyX unicem2 (U2C)...
July 26, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/30033306/the-cellular-response-of-nerve-cells-on-poly-l-lysine-coated-plga-mwcnts-aligned-nanofibers-under-electrical-stimulation
#13
Jing Wang, Lingling Tian, Nuan Chen, Seeram Ramakrishna, Xiumei Mo
Tissue engineering scaffold provide an effective alternative for peripheral nerve repair. Nanofibrous nerve conduits fabricated with various synthetic and natural materials have great potential to support nerve regeneration as a bridge between adjacent ends. The physical, chemical and electrical properties of the scaffolds affect the outcome of nerve regeneration and recovery of function. In this paper, a surface modified, electrically conductive, aligned nanofibrous scaffold composed of poly(lactic-co-glycolic acid) (PLGA) and multi-walled carbon nanotubes (MWCNTs), referred to as L-PC_A was fabricated for nerve regeneration...
October 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/30031056/effect-of-the-demineralisation-efficacy-of-mdp-utilized-on-the-bonding-performance-of-mdp-based-all-in-one-adhesives
#14
Kou Fujita Nakajima, Toru Nikaido, Michael Francis Burrow, Taro Iwasaki, Yasuhiro Tanimoto, Satoshi Hirayama, Norihiro Nishiyama
OBJECTIVES: The amounts of calcium salt of 10-methacryloyloxydecyl dihydrogen phosphate (MDP-Ca salt) and dicalcium phosphate dihydride (DCPD) with an amorphous phase produced by the demineralisation of enamel and dentin were determined using commercial MDP-based 2-hydroxyethyl methacrylate (HEMA)-containing and HEMA-free all-in-one adhesives. The effect of the amount of MDP-Ca salt produced on bonding performance to enamel and dentin was then characterized. METHODS: Three types of commercial HEMA-containing adhesives (Scotchbond Universal Adhesive, Clearfil Tri-S Bond ND, Clearfil Tri-S Bond ND Quick), a commercial HEMA-free adhesive (G-Bond Plus) and an experimental HEMA-free adhesive were used...
July 18, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/30029794/demineralization-capacity-of-commercial-10-methacryloyloxydecyl-dihydrogen-phosphate-based-all-in-one-adhesive
#15
Kou Fujita Nakajima, Toru Nikaido, Akishi Arita, Satoshi Hirayama, Norihiro Nishiyama
OBJECTIVE: We determined the amounts of calcium salt of 10-methacryloyloxydecyl dihydrogen phosphate (MDP-Ca salt) and dicalcium phosphate dihydride (DCPD) with an amorphous phase developed during the application of commercial MDP-based all-in-one adhesives to enamel and dentin. This is because the demineralization by MDP and following calcium salt formation of MDP may be limited by an ionic bond formation of MDP to hydroxyapaptite in the enamel and dentin and following intermediary layer formation of MDP, since MDP forms a chemically-stable adsorption layer...
July 17, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/30022838/immunohistochemical-expression-of-hormone-receptors-ki-67-endoglin-cd105-claudins-3-and-4-mmp-2-and-9-in-endometrial-polyps-and-endometrial-cancer-type-i
#16
Gustavo Filipov Peres, Daniel Spadoto-Dias, Flávia Neves Bueloni-Dias, Nilton José Leite, Leonardo Vieira Elias, Maria Aparecida Custódio Domingues, Carlos Roberto Padovani, Rogério Dias
Objective: The aim of this study was to investigate the malignant potential of endometrial polyps (EP) by assessing the immunoexpressions of both estrogen receptor (ER) and progesterone receptor (PR), Ki-67 cell proliferation index, neovascularization network (endoglin - CD105), cellular adhesion molecules (claudins 3 and 4), and extracellular matrix proteins (MMP-2 and -9) in both EP and endometrioid adenocarcinoma (type I) in comparison with the normal endometrium. Study design: This is a cross-sectional comparative study...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/30022272/effects-of-non-thermal-atmospheric-plasma-treatment-on-dentin-wetting-and-surface-free-energy-for-application-of-universal-adhesives
#17
Jovana N Stasic, Nenad Selaković, Nevena Puač, Maja Miletić, Gordana Malović, Zoran Lj Petrović, Djordje N Veljovic, Vesna Miletic
OBJECTIVES: The study aims to evaluate the effects of non-thermal atmospheric plasma (NTAP) treatments on dentin wetting and surface free energy (SFE) and compare the effects of NTAP treatment, etch-and-rinse, and self-etch protocols for application of universal adhesives. MATERIALS AND METHODS: Mid-coronal dentin of intact third molars was used to measure contact angles of distilled water, ethylene-glycol, and diiodomethane and calculate SFE following different NTAP preset treatments (feeding gas consisting of pure He, He + 1% O2 , He + 1...
July 18, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/30021114/theoretical-analysis-of-stress-distribution-and-cell-polarization-surrounding-a-model-wound
#18
Yonit Maroudas-Sacks, Assaf Zemel
A growing amount of experimental evidence shows that the local elastic field acting on cells governs their spatial organization and polarity in a tissue. Interestingly, experiments on wound healing reveal a universal formation of thick actomyosin bundles around the margins of epithelial gaps. Although the forces involved in this process have been measured, the mechanisms governing cellular alignment and contractile ring formation are still not fully understood. To theoretically investigate this process, we have carried out a self-consistent calculation of the elastic field that is actively generated around a circular gap in a contractile cell monolayer that is adhered to an elastic substrate, taking into account the responsiveness of actomyosin activity to the locally generated stress...
July 17, 2018: Biophysical Journal
https://www.readbyqxmd.com/read/30020854/shear-bond-strength-of-nanohybrid-composite-to-the-resin-matrix-ceramics-after-different-surface-treatments
#19
Ersan Çelik, Sezgi Cinel Sahin, Doğu Ömür Dede
OBJECTIVE: The purpose of this study was to evaluate the effects of different surface treatments on the shear bond strength (SBS) of a composite resin to the various resin matrix ceramics (RMC). BACKGROUND: Clinical applications of physical and chemical surface conditioning methods may be required for RMC to optimize the adhesion of additional resin materials. MATERIALS AND METHODS: Ninety-nine RMC specimens (6 × 6 × 2 mm) were prepared from a resin nanoceramic (RNC), a polymer-infiltrated hybrid ceramic (PIHC), and a flexible hybrid ceramic (FHC) block with a cutting machine under copious water...
August 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/30017165/how-does-the-piston-material-affect-the-in-vitro-mechanical-behavior-of-dental-ceramics
#20
Kátia R Weber, Paula Benetti, Álvaro Della Bona, Pedro H Corazza, Juliana A Medeiros, Ediléia Lodi, Márcia Borba
STATEMENT OF PROBLEM: Variables involving the indication, manufacturing, and clinical use of ceramic restorations make the standardization of in vitro studies a challenge and raise questions as to the clinical validity of the resulting data. PURPOSE: The purpose of this in vitro study was to assess the effect of piston material on the fracture behavior of ceramics tested under compressive load. MATERIAL AND METHODS: Two ceramics were evaluated: a lithium disilicate-based glass-ceramic (D) and a feldspathic porcelain (P)...
July 13, 2018: Journal of Prosthetic Dentistry
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