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https://www.readbyqxmd.com/read/29679503/prosthetic-rehabilitation-of-patients-with-hypohidrotic-ectodermal-dysplasia-a-systematic-review
#1
REVIEW
Dagmar Schnabl, Ingrid Grunert, Matthias Schmuth, Ines Kapferer-Seebacher
BACKGROUND: Hypohidrotic ectodermal dysplasia (HED) comprises a large group of inherited disorders of ectodermal structures, characterized by hypo-/anhidrosis, hypotrichosis and hypo-/oligo-/anodontia. OBJECTIVE: We aimed to systematically assess the spectrum of prosthodontic approaches with regard to the patients' age and to provide clinical implications for practicing dentists. METHODS: An electronic and manual search was conducted in four databases (Medline, LIVIVO, Cochrane Library, Web of Science Core Collection)...
April 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29679482/an-impurity-characterization-based-approach-for-the-rapid-development-of-integrated-downstream-purification-processes
#2
Steven M Timmick, Nicholas Vecchiarello, Chaz Goodwine, Laura E Crowell, Kerry R Love, J Christopher Love, Steven M Cramer
In this work, we describe a new approach for the characterization of process-related impurities along with an in silico tool to generate orthogonal, integrated downstream purification processes for biological products. A one-time characterization of process-related impurities from product expression in Pichia pastoris was first carried out using linear salt and pH gradients on a library of multimodal, salt-tolerant, and hydrophobic charge induction chromatographic resins. Reversed phase UPLC analysis of the fractions from these gradients was then used to generate large data sets of impurity profiles...
April 21, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29678327/antibacterial-quaternary-ammonium-compounds-in-dental-materials-a-systematic-review
#3
REVIEW
Pooyan Makvandi, Rezvan Jamaledin, Mostafa Jabbari, Nasser Nikfarjam, Assunta Borzacchiello
OBJECTIVE: Quaternary ammonium compounds (QACs) represent one of the most effective classes of disinfectant agents in dental materials and resin nanocomposites. This reviews aims to give a wide overview on the research in the field of antibacterial QACs in dental materials and nanocomposites. METHOD: An introduction to dental materials components as well as the microorganisms and methods of evaluation for the antimicrobial assays are presented. Then, the properties and synthesis route of QACs, as monomer and filler, are shown...
April 17, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29678248/influence-of-immediate-dentin-sealing-and-interim-cementation-on-the-adhesion-of-indirect-restorations-with-dual-polymerizing-resin-cement
#4
Nallu G L Hironaka, Adriana L M Ubaldini, Francielle Sato, Marcelo Giannini, Raquel S S Terada, Renata C Pascotto
STATEMENT OF PROBLEM: Dentin surface contamination before the cementation of indirect restorations may impact bonding effectiveness. PURPOSE: The purpose of this in vitro study was to analyze the influence of immediate dentin sealing (IDS) and interim cementation on the adhesion of indirect restorations with a dual-polymerizing resin cement. MATERIAL AND METHODS: Composite resin inlays were placed in class V cavities prepared in the buccal and lingual surfaces of 30 extracted human molars with a dual-polymerizing resin cement in 3 different ways (n=10): CG, directly on dentin; PG, after 14 days interim cementation; SG, after IDS and 14 days interim cementation...
April 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29677796/preparation-and-characterization-of-novel-dental-material-with-high-shear-bond-strength
#5
Duck Hyun Kim, Min Jae Lee, A-Young Sung
HPMA (hydroxypropyl methacrylate) and Bis-GMA (bisphenol A glycerolate dimethacrylate), the main ingredients, and styrene, TEGDMA (triethylene glycol dimethacrylate), BPO (benzoyl peroxide) and camphoroquinone, the photo-initiators, and BHT (butylated hydroxytoluene), the photocatalyst were mixed by different ratios and stirred to investigate the compatibility of dental materials with photoinitiators. The degree of polymerization was checked and determination of the most ideal ratio for photopolymerization was followed by establishing the basic combination of styrene, HPMA, Bis-GMA, BHT, TEGDMA and HEMA...
September 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29677759/mechanical-and-thermal-properties-of-epoxy-composites-containing-zirconia-impregnated-halloysite-nanotubes-with-different-loadings
#6
Suhyun Kim, Moon Il Kim, Minyoung Shon, Bongkuk Seo, Choongsun Lim
Epoxy resins are widely used in various industrial fields due to their low cost, good workability, heat resistance, and good mechanical strength. However, they suffer from brittleness, an issue that must be addressed for further applications. To solve this problem, additional fillers are needed to improve the mechanical and thermal properties of the resins; zirconia is one such filler. However, it has been reported that aggregation may occur in the epoxy composites as the amount of zirconia increases, preventing enhancement of the mechanical strength of the epoxy composites...
September 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29677753/photopolymerization-and-characterization-of-dental-resin-cement-containing-nano-material
#7
Duck Hyun Kim, A-Young Sung
In this study, to manufacture dental resin cement, Bis-GMA was used as a major ingredient, TEGDMA was used as a diluent, and camphoroquinone was used as a photoinitiator. Nanodiamonds were added to increase the bonding strength. After mixing Bis-GMA, HPMA, TEGDMA, BHT, BPO, and camphoroquinone (photoinitiator), nanodiamonds were added at a ratio of 2-3%, and polymerization was done after stirring for 24 hours. Photopolymerization was also carried out with Dentmate (LWDEX WL-090) by irradiation at a 440-480 nm wavelength and at about 1000 mW/cm2 intensity for about 40 seconds...
September 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29677704/morphology-of-a-hidden-tube-resin-injection-and-ct-scanning-reveal-the-three-dimensional-structure-of-the-spiracle-in-the-japanese-bullhead-shark-heterodontus-japonicus-chondrichthyes-heterodontiformes-heterodontidae
#8
Taketeru Tomita, Minoru Toda, Kei Miyamoto, Keiichi Ueda, Kazuhiro Nakaya
The spiracle of elasmobranchs (sharks, skates, and rays) is a gill-slit-derived tube located behind the eye. Its inner structure was well studied in the late nineteenth to early twentieth century, but its entire morphology has rarely been characterized and is poorly understood. The present study shows the three-dimensional morphology of the spiracular tube for the first time, using resin injection and CT scanning, in the Japanese bullhead shark. The spiracular tube is characterized by the presence of two caeca (dorsal and ventral spiracular caeca) on the medial wall of the spiracular tube and the presence of a pseudobranch on the anterior wall...
April 20, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29677592/development-of-rapid-and-simple-method-for-dna-extraction-from-cannabis-resin-based-on-the-evaluation-of-relative-pcr-amplification-ability
#9
Tadashi Yamamuro, Yuko T Iwata, Hiroki Segawa, Kenji Kuwayama, Kenji Tsujikawa, Tatsuyuki Kanamori, Hiroyuki Inoue
In recent years, analysis of cannabis DNA has been increasingly used in forensic drug tests. However, in the case of cannabis resin, a processed marijuana product, complicated procedures are required for the extraction of clean DNA, as the presence of various impurities inhibits PCR amplification. Therefore, in this study, we attempted to identify the factors that would allow quick and simple DNA extraction from cannabis resin with a commercially available kit. We also constructed a simple assay system for comparing relative amplification efficiencies by end-point PCR and used it to evaluate the purity of the obtained DNA solutions...
April 4, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29677445/new-amphiphilic-composite-for-preparing-efficient-coated-potassium-fertilizers-for-top-dressing-fertilization-of-annual-crops
#10
Oscar Urrutia, Javier Erro, Andre Vinicius Zabini, Kent Hoshiba, Anne Francoise Blandin, Roberto Baigorri, Manuel Martin-Pastor, Yves Alis, Jean-Claude Yvin, José María García-Mina
This study describes the efficiency of a new coating material for preparing granulated potassium-fertilizers with a potassium release to the soil solution sensitive to rainfall intensity. The composite is prepared by reaction of an alkyd-resin with cement in the absence of water. The complementary use of diverse analytical techniques showed that the presence of the cement fraction induced alkyd resin reticulation and gradual cement-resin hardening. Scanning electron microscopy revealed the formation of micro and nanopores within cement-clusters, whose water permeability is affected by the resin reticulation and amphiphilic character...
April 20, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29677131/solid-phase-adsorption-toxin-tracking-spatt-technology-for-the-monitoring-of-aquatic-toxins-a-review
#11
REVIEW
Mélanie Roué, Hélène Taiana Darius, Mireille Chinain
The Solid Phase Adsorption Toxin Tracking (SPATT) technology, first introduced in 2004, uses porous synthetic resins capable of passively adsorbing toxins produced by harmful microalgae or cyanobacteria and dissolved in the water. This method allows for the detection of toxic compounds directly in the water column and offers numerous advantages over current monitoring techniques (e.g., shellfish or fish testing and microalgae/cyanobacteria cell detection), despite some limitations. Numerous laboratory and field studies, testing different adsorbent substrates of which Diaion® HP20 resin appears to be the most versatile substrate, have been carried out worldwide to assess the applicability of these passive monitoring devices to the detection of toxins produced by a variety of marine and freshwater microorganisms...
April 20, 2018: Toxins
https://www.readbyqxmd.com/read/29676972/effect-of-resin-luting-systems-and-alumina-particle-air-abrasion-on-bond-strength-to-zirconia
#12
R Grasel, M J Santos, Hm Chagas Rêgo, M P Rippe, L F Valandro
This study aimed to evaluate the effect of different primer/resin luting agent combinations and alumina air abrasion on the adhesion to zirconia. Eighty blocks (4×4×3 mm) of Lava Frame Zirconia (3M ESPE) were produced and randomly assigned into eight groups (n=10) according to two zirconia surface treatments (untreated or air abrasion with 50-μm alumina particles) and four luting systems (SU: Scotchbond Universal/RelyX Unicem 2; ZP: Z-Prime Plus/Duo-link Universal; MB: Monobond Plus/Variolink II; and AP: Alloy Primer/ED Primer II/Panavia F 2...
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29676971/conservative-treatment-of-a-complicated-crown-root-fracture-using-adhesive-fragment-reattachment-and-composite-resin-restoration-two-year-follow-up
#13
A V Martins, R C Albuquerque, L D Lanza, Ê L Vilaça, Nrfa Silva, A N Moreira, R R da Silveira
Crown-root fracture is one of the most challenging fracture types in the dental traumatology literature. Traumatized anterior teeth require quick functional and esthetic repair. In the case of a complex crown fracture of the maxillary left central incisor, requiring endodontic treatment, a fiber-reinforced post was used to create a central support stump to restore the dental morphology. This report describes the clinical procedures involved in the treatment. After two years of follow-up, the clinical and radiographic findings demonstrated that the adopted clinical protocol was successful and yielded healthy periodontal tissues with no signs of periradicular pathology...
May 2018: Operative Dentistry
https://www.readbyqxmd.com/read/29675517/gpdm-and-mdp-based-self-etch-adhesives-bonded-to-bur-cut-and-uncut-enamel-immediate-and-aged-%C3%AE-tbs
#14
Shuhei Hoshika, Atsushi Kameyama, Yuji Suyama, Jan De Munck, Hidehiko Sano, Bart Van Meerbeek
PURPOSE: To determine the microtensile bond strength (μTBS) of two 2-step self-etch adhesives (SEAs) to bur-cut and uncut enamel. MATERIALS AND METHODS: The buccal and lingual enamel surfaces of 15 teeth were ground flat ("bur-cut" enamel), while the enamel surface of another set of 15 teeth was solely prophylactically cleaned ("uncut" enamel). Resin composite was bonded to the surfaces using the GPDM-based SEA OptiBond XTR (Kerr), the 10-MDP-based SEA Clearfil SE Bond (Kuraray Noritake), or the 3-step etch-and-rinse adhesive (E&RA) OptiBond FL (Kerr) that served as the gold-standard control...
April 19, 2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29675515/ceramic-surface-treatment-with-a-single-component-primer-resin-adhesion-to-glass-ceramics
#15
Mayara Prado, Catina Prochnow, Ana Maria Estivalete Marchionatti, Paolo Baldissara, Luiz Felipe Valandro, Vinicius Felipe Wandscher
PURPOSE: To evaluate the microshear bond strength (μSBS) of composite cement bonded to two machined glass ceramics and its durability, comparing conventional surface conditioning (hydrofluoric acid + silane) to a one-step primer (Monobond Etch & Prime). MATERIALS AND METHODS: Machined slices of lithium disilicate ceramic (LDC) (IPS e.max CAD) and feldspathic ceramic (FC) (VITA Mark II) glass ceramics were divided into two groups (n = 10) according to two factors: 1...
April 19, 2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29675514/bonding-of-composite-to-base-materials-effects-of-adhesive-treatments-on-base-surface-properties-and-bond-strength
#16
Konstantinos Anastasiadis, Elisabeth A Koulaouzidou, Georgios Palaghias, George Eliades
PURPOSE: To evaluate the effects on the surface properties (morphology, roughness, microhardness, composition) and bond strength to composite of four types of base cements (Equia-Fil/EQF, Angelus white MTA/MTA, Biodentin/ BDN and IRM/IRM) when treated with phosphoric acid etching (PAE) or two self-etch adhesives (Select One Prime & Bond and Clearfil S3 Bond). MATERIALS AND METHODS: Disk-shaped specimens were prepared and stored until complete setting. The surfaces before and after treatments were examined by stereomicroscopy, optical profilometry, ATR-FTIR, and LV-SEM/EDX...
April 19, 2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29675513/endodontic-sealers-affect-the-bond-strength-of-fiber-posts-and-the-degree-of-conversion-of-two-resin-cements
#17
Thais Camponogara Bohrer, Patricia Eliana Fontana, Vinicius Felipe Wandscher, Victor Hugo Carvalho Morari, Sailer Santos Dos Santos, Luiz Felipe Valandro, Osvaldo Bazzan Kaizer
PURPOSE: To evaluate the effect of two endodontic sealers on the push-out bond strength between fiber posts and root canal wall after different storage times and verify the influence of the endodontic sealers on the degree of conversion of composite cements. MATERIALS AND METHODS: A total of 180 bovine teeth were endodontically treated using two endodontic sealers, eugenol- based (Endofill, Dentsply Maillefer) or epoxy resin-based (AH Plus, Dentsply Maillefer). Subsequently, the specimens were stored in 100% relative humidity at 37°C for 24 h, 6 or 12 months...
April 19, 2018: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/29674828/depth-and-percentage-of-resin-based-sealer-penetration-inside-the-dentinal-tubules-using-endovac-endoactivator-navi-tip-fx-irrigation-system-a-confocal-laser-scanning-microscope-study
#18
Ramesh Bharti, Aseem Prakash Tikku, Anil Chandra, Vijay Kumar Shakya, Simith Yadav
Aim: This in vitro study was conducted to evaluate the effect of EndoVac, EndoActivator, and Navy Tip FX irrigation system on lateral depth and percentage of sealer penetration into the dentinal tubules using confocal laser scanning microscope. Materials and Methods: Forty recently extracted single-rooted mandibular premolars were taken and root canal treatment was performed using three different irrigation system, that is, EndoVac, EndoActivator, and Navi tip FX...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674825/influence-of-different-resin-cements-and-surface-treatments-on-microshear-bond-strength-of-zirconia-based-ceramics
#19
Anderson Petrauskas, Karina Andrea Novaes Olivieri, Yasmine Mendes Pupo, Guilherme Berger, Ederson Áureo Gonçalves Betiol
Aim: This study aims to evaluate the microshear bond strength of zirconia-based ceramics with different resin cement systems and surface treatments. Materials and Methods: Forty blocks of zirconia-based ceramic were prepared and embedded in polyvinyl chloride (PVC) tubes with acrylic resin. After polishing, the samples were washed in an ultrasonic bath and dried in an oven for 10 min. Half of the samples were subjected to sandblasting with aluminum oxide. Blocks were divided into four groups ( n = 10) in which two resin cements were used as follows: (1) RelyX™ U100 with surface-polished zirconia; (2) RelyX™ U100 with surface-blasted zirconia; (3) Multilink with surface-polished zirconia; and 4) Multilink with surface-blasted zirconia...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29674824/effect-of-acid-etching-on-the-micro-shear-bond-strength-of-resin-composite-calcium-silicate-interface-evaluated-over-different-time-intervals-of-bond-aging
#20
Neha Sultana, Ruchika Roongta Nawal, Sarika Chaudhry, Malavika Sivakumar, Sangeeta Talwar
Introduction: With the introduction of calcium silicate materials, pulp capping procedure has been simplified due to their therapeutic pulp capping capabilities and ability to be used as a provisional bulk restorative material simultaneously. The quality of the adhesive bond between these cements and composite is of clinical significance with regard to the longevity of the final laminate restoration. Thus, this study aims to compare the in vitro microtensile bond strengths of resin composite to different calcium silicate cements versus glass ionomer cement (GIC)...
March 2018: Journal of Conservative Dentistry: JCD
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