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https://www.readbyqxmd.com/read/28445445/cardioprotective-effects-of-malvidin-against-isoproterenol-induced-myocardial-infarction-in-rats-a-mechanistic-study
#1
Hui Wei, Hui Li, Shu-Ping Wan, Qiu-Tang Zeng, Long-Xian Cheng, Li-Li Jiang, Yu-Dong Peng
BACKGROUND Malvidin (alvidin-3-glucoside) is a polyphenol that belongs to the class of natural anthocyanin, which is abundantly found in red wines, colored fruits, and the skin of red grapes. Therefore, the current investigation was intended to evaluate the effect of malvidin against myocardial infarction induced by isoproterenol in the rats. MATERIAL AND METHODS The cardioprotective effects was assessed by determining the effect of malvidin on the activities of endogenous antioxidants - catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH) - and on the levels of lipid peroxidation and serum marker enzymes...
April 26, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28443833/bulk-fill-composites-a-review-of-the-current-literature
#2
Annelies Van Ende, Jan De Munck, Diogo Pedrollo Lise, Bart Van Meerbeek
PURPOSE: The aim of this article was to provide an overview of the literature on the currently available bulk-fill composites, and to describe the common trends as well as the wide variations. The findings may help the clinician to select the proper material with regard to its applicability in various clinical situations. METHODS: The literature up to October 2016 was reviewed based on a PubMed search (keywords: "bulk-fill OR bulkfill OR bulk fill" AND "composite OR composites")...
April 25, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28443832/protective-buffering-capacity-of-restorative-dental-materials-in-vitro
#3
Markus Fuss, Michael J Wicht, Thomas Attin, Sonja H M Derman, Michael J Noack
PURPOSE: To investigate the buffering capacity of restorative materials during a simulated carious and intrinsic erosive attack. MATERIALS AND METHODS: Cavities with a volume of 130 μl were milled (Cerec MC XL) out of blocks of Ceram X Mono (CM), Quixfil (QX), Filtek Supreme (FS), Apa Fill 3 (AF), an experimental dual-curing composite containing a bioactive glass (EX), Dyract eXtra (DY), Beautifil (BE), Equia Fil (EQ), Telio CAD (TL) (negative control), TheraCal (TC; positive control), and extracted teeth (ED)...
April 25, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28442145/mechanical-characteristic-and-biological-behaviour-of-implanted-and-restorative-bioglasses-used-in-medicine-and-dentistry-a-systematic-review
#4
REVIEW
F Lizzi, C Villat, N Attik, P Jackson, B Grosgogeat, C Goutaudier
OBJECTIVE: Nowadays bioactive glasses are finding increasing applications in medical practice due to their ability to stimulate re-mineralisation. However, they are intrinsically brittle materials and the study of new compositions will open up new scenarios enhancing their mechanical properties and maintaining the high bioactivity for a broader range of applications. This systematic review aims to identify the relationship between the composition of bioactive glasses used in medical applications and their influence on the mechanical and biological properties...
April 22, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28439577/shear-bond-strength-of-lining-materials-to-calciumsilicate-cements-at-different-time-intervals
#5
Alena Schmidt, Edgar Schäfer, Till Dammaschke
PURPOSE: To compare the shear bond strength of three different light-curing, flowable composites (Ionoseal [IS], Vertise flow [VF], and Futurabond NR + Grandio Flow [GF]) on MTA-Angelus [MTA] or Biodentine [BD] at three different time intervals. MATERIALS AND METHODS: Freshly mixed MTA or BD was applied into 180 identical plaster molds. Three minutes, 15 min, and 2 days after mixing, specimens of IS, VF, and GF with standardized size and diameter were applied on MTA and BD specimens (n = 10 per material and time interval)...
April 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28439164/use-of-t-m-j-disc-as-a-soft-tissue-interpositional-graft-material-for-functional-rehabilitation-of-ankylosed-t-m-joint
#6
Ravinder Singh Bedi, Upasana Khemka, Jaipal Singh, Manoj Yadav, Pratibha Singh
INTRODUCTION: Many surgical techniques have been described for the treatment of TMJ ankylosis, but no strategy has been uniformly agreed upon underscoring the difficulty of the problem. Despite new guidelines and updated methods, treating patients with TMJ Ankylosis remains a challenge as the incidence of recurrence after treatment is soaring. This study exemplifies our experience in using an unsullied method to treat TMJ Ankylosis to restore the structure of TMJ in conjunction with convalescing secondary maxillofacial deformity...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28437646/combined-effects-of-climate-restoration-measures-and-slope-position-in-change-in-soil-chemical-properties-and-nutrient-loss-across-lands-affected-by-the-wenchuan-earthquake-in-china
#7
Yongming Lin, Haojun Deng, Kun Du, Loretta Rafay, Guang-Shuai Zhang, Jian Li, Can Chen, Chengzhen Wu, Han Lin, Wei Yu, Hailan Fan, Yonggang Ge
The MS 8.0Wenchuan Earthquake in 2008 caused huge damage to land cover in the northwest of China's Sichuan province. In order to determine the nutrient loss and short term characteristics of change in soil chemical properties, we established an experiment with three treatments ('undestroyed', 'destroyed and treated', and 'destroyed and untreated'), two climate types (semi-arid hot climate and subtropical monsoon climate), and three slope positions (upslope, mid-slope, and bottom-slope) in 2011. Ten soil properties-including pH, organic carbon, total nitrogen, total phosphorus, total potassium, Ca(2+), Mg(2+), alkaline hydrolysable nitrogen, available phosphorus, and available potassium-were measured in surface soil samples in December 2014...
April 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437002/dentists-restorative-decision-making-and-implications-for-an-amalgamless-profession-part-4-clinical-factors
#8
G Alexander, Hopcraft, M J Tyas, R H K Wong
BACKGROUND: The Minamata Convention embodies a world-wide reduction in the production and use of mercury and mercury-containing products and processes, including a phase-down of dental amalgam. This will change the approach to the use of direct restorative materials in the near future. There is little research as to the influence of clinical factors on dentists' decision-making which may be of use when determining the impact of any change. METHODS: An online survey relating to aspects of and attitudes to the use of direct restorative materials was distributed to all dentists who were members of the Australian Dental Association and/or Members or Fellows of the Royal Australasian College of Dental Surgeons...
April 24, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28435997/assessment-of-organic-pollution-of-an-industrial-river-by-synchronous-fluorescence-and-uv-vis-spectroscopy-the-fensch-river-ne-france
#9
Aziz Assaad, Steve Pontvianne, Marie-Noëlle Pons
To rapidly monitor the surface water quality in terms of organic pollution of an industrial river undergoing restoration, optical methods (UV-visible spectrometry and fluorescence) were applied in parallel to classical physical-chemical analyses. UV-visible spectra were analyzed using the maximum of the second derivative at 225 nm (related to nitrates), specific absorbance at 254 nm (SUVA254), and the spectral slope between 275 and 295 nm (S 275-295) (related to the aromaticity and molecular weight of dissolved organic carbon)...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28435624/metal-stain-on-monolithic-zirconia-restoration-a-case-report
#10
Min-Sang Cha, Sang-Woon Lee, Yoon-Hyuk Huh, Lee-Ra Cho, Chan-Jin Park
In restorative treatment using fixed dental prostheses, dentists should select appropriate restoration material among various types of dental materials. The strength, marginal fit, esthetics, wear resistance, biocompatibility, and cost are important factors in the choice of restoration materials. The present case showed a surface stain on a monolithic zirconia restoration that was due to wear between the monolithic zirconia restoration and the base metal alloy restoration. This phenomenon was confirmed by surface roughness measurement and electron probe micro-analysis...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435367/-ormocer-an-innovative-technology-a-replacement-for-conventional-cements-and-veneer-a-comparative-in-vitro-analysis
#11
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/28435365/can-onlay-s-be-an-alternative-restoration-for-severely-damaged-primary-teeth
#12
Begum Gok Coban, Zuhal Kirzioglu, Ayse Ceren Altun
OBJECTIVE: The aim of this study was to evaluate indirect compomer and composite resin onlay restorations of severely damaged primary molars in vivo. MATERIALS AND METHODS: At the study, 48 restorations, in seven girls and ten boys totally 17 patients aged 4-8, was evaluated clinically with using USPHS criteria for 15 months. RESULTS: The study results revealed that the clinical success rate of compomer and composite onlay restorations was 79% and 96%, respectively...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28434685/influence-of-inhomogeneous-dental-posts-on-stress-distribution-in-tooth-root-and-interfaces-three-dimensional-finite-element-analysis
#13
Mojtaba Mahmoudi, Ali Reza Saidi, Parviz Amini, Maryam Alsadat Hashemipour
STATEMENT OF PROBLEM: In post-core crown restorations, the use of flexible posts concentrates stresses at the dentin and the use of stiff posts concentrates stresses at the interfaces. A class of inhomogeneous materials (called functionally graded materials) has been proposed for posts to resolve the weaknesses of both flexible and rigid posts. PURPOSE: The purpose of this in vitro study was to design an inhomogeneous post and investigate its influence on the stress distribution of post-core crown restorations...
April 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28432885/from-laboratory-to-field-studies-the-assessment-of-biscutella-laevigata-suitability-to-biological-reclamation-of-areas-contaminated-with-lead-and-cadmium
#14
Ewa Muszyńska, Ewa Hanus-Fajerska, Barbara Piwowarczyk, Joanna Augustynowicz, Krystyna Ciarkowska, Tomasz Czech
The aim of the work was to evaluate the usefulness of the in vitro multiplication of Biscutella laevigata calamine ecotype for in situ reclamation of post-flotation wastes polluted with Pb and Cd. The experiment was conducted on three steps: (i) plant shoots' production under in vitro condition, (ii) establishment of the material in greenhouse experiment, and finally (iii) field cultivation directly on the mining-waste heap of Olkusz Ore-Bearing Region, Poland. This region is known to be one of the most chemically-degraded area in central Europe...
April 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28431686/adm-guidance-ceramics-all-ceramic-multilayer-interfaces-in-dentistry
#15
Ulrich Lohbauer, Susanne S Scherrer, Alvaro Della Bona, Michael Tholey, Richard van Noort, Alessandro Vichi, J Robert Kelly, Paulo F Cesar
This guidance document describes the specific issues involved in dental multilayer ceramic systems. The material interactions with regard to specific thermal and mechanical properties are reviewed and the characteristics of dental tooth-shaped processing parameters (sintering, geometry, thickness ratio, etc.) are discussed. Several techniques for the measurement of bond quality and residual stresses are presented with a detailed discussion of advantages and disadvantages. In essence no single technique is able to describe adequately the all-ceramic interface...
April 18, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28429875/effect-of-untreated-zirconium-oxide-nanofiller-on-the-flexural-strength-and-surface-hardness-of-autopolymerized-interim-fixed-restoration-resins
#16
Abdolhamid Alhavaz, Maryam Rezaei Dastjerdi, Arman Ghasemi, Azade Ghasemi, Abolfazl Alizadeh Sahraei
OBJECTIVE: Autopolymerized poly methyl methacrylate (PMMA) resin is commonly used for the construction of interim restorations; however, it has less than optimal mechanical properties. In this article, we evaluated the reinforcing effect of adding untreated zirconia nanoparticles on the flexural strength and surface hardness of this resin. METHODS: A total of 80 specimens were fabricated. Forty each were used for the flexural strength test and for the surface hardness test...
April 21, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28428625/recovery-of-alumina-nanocapacitors-after-high-voltage-breakdown
#17
A Belkin, A Bezryadin, L Hendren, A Hubler
Breakdown of a dielectric material at high electric fields significantly limits the applicability of metal-dielectric-metal capacitors for energy storage applications. Here we demonstrate that the insulating properties of atomic-layer-deposited Al2O3 thin films in Al/Al2O3/Al trilayers can recover after the breakdown. The recovery has been observed in samples with the dielectric thickness spanning from 4 to 9 nm. This phenomenon holds promise for a new generation of capacitors capable of restoring their properties after the dielectric breakdown...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428217/microrna-33-regulates-macrophage-autophagy-in-atherosclerosis
#18
Mireille Ouimet, Hasini Ediriweera, Milessa Silva Afonso, Bhama Ramkhelawon, Ragunath Singaravelu, Xianghai Liao, Rachel C Bandler, Karishma Rahman, Edward A Fisher, Katey J Rayner, John P Pezacki, Ira Tabas, Kathryn J Moore
OBJECTIVE: Defective autophagy in macrophages leads to pathological processes that contribute to atherosclerosis, including impaired cholesterol metabolism and defective efferocytosis. Autophagy promotes the degradation of cytoplasmic components in lysosomes and plays a key role in the catabolism of stored lipids to maintain cellular homeostasis. microRNA-33 (miR-33) is a post-transcriptional regulator of genes involved in cholesterol homeostasis, yet the complete mechanisms by which miR-33 controls lipid metabolism are unknown...
April 20, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28422601/degradation-of-resin-restorative-materials-by-streptococcus-mutans-a-pilot-study
#19
Ankit K Gautam, Ruchi Thakur, N D Shashikiran, Singla Shilpy, Nikita Agarwal, Shilpi Tiwari
OBJECTIVE: To evaluate the degradation of three resin based restorative materials by S Mutans. STUDY DESIGN: Class I cavity was prepared in extracted premolars and were randomly divided into 3 groups (Group I - Conventional composite (CC), Group II - Resin Modified GIC and Group III-Giomer). Teeth were then restored by respective restorative material and equally divided in two subgroups (Control and Experimental). Experiment subgroup samples were then incubated in 2 ml of BHI with 1:10 dilution of SM (MTCC-497) grown overnight in BHI whereas control subgroup samples were incubated in BHI without SM...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28422598/the-use-of-restorative-materials-in-primary-molars-among-pediatric-dentists-in-israel
#20
Sigalit Blumer, Benjamin Peretz, Tal Ratson
OBJECTIVES: To assess the current choice of various restoration materials among Israeli pediatric dentists according to seniority and specialty. STUDY DESIGN: Participating dentists completed a 23-item questionnaire on their qualifications, type of practice and preference of restorative material. RESULTS: Seventy-five dentists (average age 46.27±12.6 years, 58 females) participated. Forty-one were specialist pediatric dentists and 34 were general practitioners...
2017: Journal of Clinical Pediatric Dentistry
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