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Selen Küçükkaya Eren, Peter Parashos
This systematic review analysed the literature comparing marginal adaptation of mineral trioxide aggregate (MTA) with other filling materials in root-end cavities. The PubMed, Ovid, Web of Science, SCOPUS, and Cochrane library databases were searched using appropriate keywords related to root-end filling materials and adaptation. Of 38 articles assessed, 20 met the inclusion criteria. No in vivo study was identified. In 10 studies, MTA gave the best marginal adaptation results, but no significant differences were found between MTA and any of the tested filling materials in seven studies...
February 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
Dandan Yuan, Lei Tian, Zhida Li, Hong Jiang, Chao Yan, Jing Dong, Hongjun Wu, Baohui Wang
Herein, we report the solar thermal electrochemical process (STEP) aniline oxidation in wastewater for totally solving the two key obstacles of the huge energy consumption and passivation film in the electrochemical treatment. The process, fully driven by solar energy without input of any other energies, sustainably serves as an efficient thermoelectrochemical oxidation of aniline by the control of the thermochemical and electrochemical coordination. The thermocoupled electrochemical oxidation of aniline achieved a fast rate and high efficiency for the full minimization of aniline to CO 2 with the stability of the electrode and without formation of polyaniline (PAN) passivation film...
February 15, 2018: Scientific Reports
S Sobrino-Cossío, J M Abdo Francis, F Emura, E S Galvis-García, M L Márquez Rocha, G Mateos-Pérez, C B González-Sánchez, N Uedo
INTRODUCTION AND OBJECTIVE: Atrophy and intestinal metaplasia are early phenotypic markers in gastric carcinogenesis. White light endoscopy does not allow direct biopsy of intestinal metaplasia due to a lack of contrast of the mucosa. Narrow-band imaging is known to enhance the visibility of intestinal metaplasia, to reduce sampling error, and to increase the diagnostic yield of endoscopy for intestinal metaplasia in Asian patients. The aim of our study was to validate the diagnostic performance of narrow-band imaging using 1...
February 12, 2018: Revista de Gastroenterología de México
G M Nardi, M Mazur, D Corridore, M Capocci, F Md Rinaldo, A Maruotti, L Ottolenghi, F Guerra
TRIAL DESIGN: We design a clinical splith-mouth, randomized controlled study, in which the retention of an opaque and clear pit and fissures sealants were evaluated and their effectiveness compared at 6 and 12 months of follow up. A secondary aim was to evaluate the possibility of using a fluorescence based intra-oral camera through the clear sealant to monitor enamel demineralization. METHODS: Consecutive young adolescents with at least two molars with code 0, 1, 2 caries evidenced following the International Caries Detection and Assessment System (ICDAS II) were enrolled...
January 2018: La Clinica Terapeutica
Andrew M Swiergosz, J Stephen Gunn, Steven A Schulz, Joshua T Henderson, Joshua H Choo, Arian Mowlavi, Bradon J Wilhelmi
Background : An estimated 125,711 face-lifts and 54,281 neck-lifts were performed in 2015. Regardless of the technique employed, facial and neck flap elevation carries with it anatomical risk of which any surgeon performing these procedures should be aware of. Statistics related to anterior jugular vein injury during these procedures have not been published. Objective : To define a "danger zone" that will contain both of the anterior jugular veins on the basis of anatomical landmarks to aid surgeons with planning their surgical approach during rhytidectomy in the anterior neck region...
2018: Eplasty
Manuel H De la Torre I, Fernando Mendoza Santoyo, M Del Socorro Hernandez-M
An optical setup that does not need in-line alignment of the object illumination and camera sensor, or requires a reflection mirror after the sample, is introduced to observe the optical phase in a heating liquid. This system uses an out-of-plane transmission digital holographic interferometer that uniformly adds speckle to the image holograms by means of a neutral phase screen. The way in which the liquid is illuminated allows having a variable magnification of the observed area of the sample. As a proof of principle, a thermal time-dependent distribution experiment is presented, whose resulting optical phase readily depicts the temperature-time-varying distribution in the liquid...
February 15, 2018: Optics Letters
Cecilia J Strudley, Kenneth C Young, Lucy M Warren
OBJECTIVE: To compare breast cancer detection using a single 8MP display with using a standard pair of 5MP monitors. METHODS: An observer study was carried out in which mammograms were read using full field views only, and again with the additional use of magnified quadrant views. Seven observers read 300 cases, one view per breast, using each display type. Cases comprised 100 normal cases and 200 cases with cancers of subtle or very subtle appearance: 100 with malignant calcification clusters and 100 with non-calcified lesions...
February 13, 2018: British Journal of Radiology
Ruchi Singla, Swaty Jhamb, Amandeep Kaur, Ruchi Vashisht
Introduction: The purpose of this in vitro study was to compare the incidence of dentinal defects during root canal preparation with hand files using different irrigants. Materials and Methods: A total of 120 extracted mandibular incisors were randomly divided into onecontrol group and five experimental groups (n = 20) depending on the irrigant used. Biomechanical preparation was not done in control group. Teeth in experimental groups were prepared with hand K-files to a master apical file #35 with 1-mm increments step-back up to #50...
November 2017: Journal of Conservative Dentistry: JCD
Fan Xiao, Ximiao Wen, Xing Haw Marvin Tan, Pei-Yu Chiou
A plasmonic micropillar platform with self-organized gold nanospheres is reported for the precision cell traction force measurement across a large field-of-view (FOV). Gold nanospheres were implanted into the tips of polymer micropillars by annealing gold microdisks with nanosecond laser pulses. Each gold nanosphere is physically anchored in the center of a pillar tip and serves as a strong, point-source-like light scattering center for each micropillar. This allows a micropillar to be clearly observed and precisely tracked even under a low magnification objective lens for the concurrent and precision measurement across a large FOV...
January 15, 2018: Applied Physics Letters
Hui Zhang, Barry C Kelly
While numerous studies have demonstrated the environmental behavior of legacy persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs), information regarding sorption and bioaccumulation potential of other widely used organic chemicals such as halogenated flame retardants (HFRs) is limited. This study involved a comprehensive field investigation of multi-class hydrophobic organic contaminants (HOCs) in environmental media and fish in Singapore Strait, an important tropical maritime strait in Southeast Asia...
February 1, 2018: Chemosphere
Michelle Markowitz, Monica Daibert-Nido, Samuel N Markowitz
Reading is the most frequent clinical complaint and the primary goal for patients with macular degeneration seeking vision rehabilitation. The current prevalent methods for reading skills training across the globe are still magnification and basic scotoma awareness training. More recent studies showed that specific eccentric training, comprehension ability training, and specific oculomotor training are all beneficial to reading skills rehabilitation. In clinical practice, ophthalmologists should strive to implement reading skills methods that include assessment of cognitive skills, optimal eyewear, optimal reading material, PRL assessment, training of better oculomotor control, and efficient perceptual training...
February 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
Khalil Kharma, Tatiana Zogheib, Shilpa Bhandi, Carina Mehanna
AIM: The aim of this study was to clinically compare glass ionomer cement (GIC) with microhybrid composite resin used in class I cavities on permanent teeth over a period of 9 months. MATERIALS AND METHODS: A total of 40 teeth with class I cavities were divided into two groups (n = 20) and restored with GIC (EQUIA; GC) and microhybrid resin composite (Amelogen Plus; Ultradent). Restorations were evaluated at ×4.5 magnification using the United States Public Health Service (USPHS) criteria every 3 months...
February 1, 2018: Journal of Contemporary Dental Practice
Lipsa Bhuyan, Sambit Sarangi, Bijoy K Das, Surya N Das, Sarat Nayak
AIM: The aim of the study was to evaluate the proliferative index (PI) at their invasive front of oral cancer and their association with Bryne's grades of oral squamous cell carcinoma (OSCC) and compare the PI with lymph node metastasis, site of involvement, and habits. MATERIALS AND METHODS: The Ki-67 antigen expression was immunohistochemically evaluated in a total of 102 cases that included the histopathologically diagnosed archival specimens of OSCCs. They were subdivided by Bryne's histopathological grading into grade I (40 cases), grade II (32 cases), and grade III (30 cases)...
February 1, 2018: Journal of Contemporary Dental Practice
Arie Berkovitz, Yaron Dekel, Revital Goldstein, Shhadeh Bsoul, Yossy Machluf, Dani Bercovich
STUDY QUESTION: Is there an association between spermatozoon genomic stability and vacuolar morphology and location? SUMMARY ANSWER: The genomic stability of spermatozoa is associated with specific characteristics of vacuolar morphology (depth) and location (cellular compartment, i.e. nucleus and equatorial region). WHAT IS KNOWN ALREADY: Genetic anomalies in sperm are correlated with semen abnormalities, yet the advantage of morphologically based selection of spermatozoa for IVF according to current criteria is controversial...
February 6, 2018: Human Reproduction
Jun Kobayashi, Yoshitaka Maeda, Yuki Imuta, Fumitaka Ishihara, Naoya Nakashima, Tomohiro Komorita, Takeo Sakurai
To evaluate the bioaccumulation potential of perfluoroalkyl acids (PFAAs) in an aquatic food web, we measured the concentrations of nine PFAAs in the water and aquatic organisms from an estuary of the Omuta River, Japan. Average log bioaccumulation factors for all PFAAs ranged from 2.0 to 2.8. There was no positive correlation observed between PFAA carbon chain length and there was no evidence of trophic magnification demonstrated among the sample types collected. These results differed from the findings of previous studies in enclosed bodies of water, perhaps because river mouth-estuarine ecotones are more variable spatially and temporally and include some fish that are highly migratory...
February 7, 2018: Bulletin of Environmental Contamination and Toxicology
Alvaro Cartagena, Azam Bakhshandeh, Kim Rud Ekstrand
OBJECTIVES: With this in vitro study we aimed to assess the possibility of precise application of sealant on accessible artificial white spot lesions (WSL) on approximal surfaces next to a tooth surface under operative treatment. A secondary aim was to evaluate whether the use of magnifying glasses improved the application precision. MATERIAL AND METHODS: Fifty-six extracted premolars were selected, approximal WSL lesions were created with 15% HCl gel and standardized photographs were taken...
February 7, 2018: Acta Odontologica Scandinavica
Elizabeth Leary, Claire Rhee, Benjamin T Wilks, Jeffrey R Morgan
Accurately predicting the human response to new compounds is critical to a wide variety of industries. Standard screening pipelines (including both in vitro and in vivo models) often lack predictive power. Three-dimensional (3D) culture systems of human cells, a more physiologically relevant platform, could provide a high-throughput, automated means to test the efficacy and/or toxicity of novel substances. However, the challenge of obtaining high-magnification, confocal z stacks of 3D spheroids and understanding their respective quantitative limitations must be overcome first...
February 1, 2018: SLAS Technology
James D Michelson, Jessie W Janowski, Mark D Charlson
BACKGROUND: Previous qualitative studies have linked first metatarsal head morphology with hallux valgus (HV) and hallux rigidus (HR). This study used a quantitative measurement of 1st MT radius of curvature to assess if HR MT heads were flatter than HV heads. METHODS: Weight bearing foot films were used in HV, HR, and normal patients (no forefoot complaints) to measure the metatarsal head radius of curvature (normalized by dividing the radius of curvature by the first metatarsal length to adjust for magnification and foot size)...
May 17, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
Andrew Emmanuel, Shraddha Gulati, Margaret Burt, Bu'Hussain Hayee, Amyn Haji
BACKGROUND: Endoscopic resection of large colorectal polyps is well established. However, significant differences in technique exist between eastern and western interventional endoscopists. We report the results of endoscopic resection of large complex colorectal lesions from a specialist unit that combines eastern and western techniques for assessment and resection. PATIENTS AND METHODS: Endoscopic resections of colorectal lesions of at least 2 cm were included...
February 5, 2018: European Journal of Gastroenterology & Hepatology
Thomas Strasser, Verena Preis, Michael Behr, Martin Rosentritt
OBJECTIVES: The aim of this study was to examine the effects of surface pre-treatment on CAD/CAM materials including ceramics, zirconia, resin-infiltrated ceramic, and resin-based composite. MATERIALS AND METHODS: Specimens were made of ten CAD/CAM materials (Celtra Duo, Degudent, D; Vita Suprinity, Vita, D; E.max CAD, Ivoclar-Vivadent, FL; E.max ZirCAD, Ivoclar-Vivadent, FL; Vita Enamic, Vita, D; Cerasmart, GC, B; LAVA Ultimate, 3M, D; SHOFU Block HC, SHOFU, US; Grandio Blocs, VOCO, D; BRILLIANT Crios, Coltene, CH) and pretreated to represent clinical procedures (Hf 20 s/5%; phosphoric acid 20 s/37%; Monobond etch and prime (Ivoclar-Vivadent, FL); water-cooled diamond bur (80 μm; 4 μm); Al2O3-blasting (50 μm/1 bar, 50 μm/2 bar, 120 μm/1 bar, 120 μm/2 bar); untreated; manufacturer's instructions)...
February 5, 2018: Clinical Oral Investigations
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