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https://www.readbyqxmd.com/read/28223484/rhythmic-brain-stimulation-reduces-anxiety-related-behavior-in-a-mouse-model-based-on-meditation-training
#1
Aldis P Weible, Denise M Piscopo, Mary K Rothbart, Michael I Posner, Cristopher M Niell
Meditation training induces changes at both the behavioral and neural levels. A month of meditation training can reduce self-reported anxiety and other dimensions of negative affect. It also can change white matter as measured by diffusion tensor imaging and increase resting-state midline frontal theta activity. The current study tests the hypothesis that imposing rhythms in the mouse anterior cingulate cortex (ACC), by using optogenetics to induce oscillations in activity, can produce behavioral changes. Mice were randomly assigned to groups and were given twenty 30-min sessions of light pulses delivered at 1, 8, or 40 Hz over 4 wk or were assigned to a no-laser control condition...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28222878/clinical-complications-and-quality-assessments-with-computer-engineered-complete-dentures-a-systematic-review
#2
REVIEW
Mathew T Kattadiyil, Abdulaziz AlHelal, Brian J Goodacre
STATEMENT OF PROBLEM: Computer-engineered complete dentures (CECDs) have significant potential as shown by recent reports of outcomes and specific applications. An understanding of complications and quality assessment factors associated with CECDs from compiled data is lacking in published reports. PURPOSE: The purpose of this systematic review was to determine the clinical complications and quality assessments related to CECDs. MATERIAL AND METHODS: Electronic searches of publications in English from January 1984 to September 2016 were performed in MEDLINE and Cochrane databases, with the results enriched by manual searches and citation mining to address 2 population intervention comparison outcome (PICO) questions: what are the clinical complications associated with CECDs, and what are the quality assessments with CECDs? RESULTS: A review of 5 selected articles (limited data) on CECDs revealed patient dissatisfaction related to overall outcome (25...
February 17, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28213875/vehicle-type-affects-filling-of-fractional-laser-ablated-channels-imaged-by-optical-coherence-tomography
#3
Uffe Høgh Olesen, Mette Mogensen, Merete Haedersdal
Ablative fractional laser (AFXL) is an emerging method that enhances topical drug delivery. Penetrating the skin in microscopic, vertical channels, termed microscopic treatment zones (MTZs), the fractional technique circumvents the skin barrier and allows increased uptake of topically applied drugs. This study aims to elucidate the impact of vehicle type on the filling of MTZs from application of liquid, gel, and cream vehicles. Ex vivo pig skin was exposed to 10,600 nm fractional CO2 laser at 5% density, 120 μm beam diameter, and fluences of 40 and 80 mJ/microbeam (mJ/mb)...
February 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28203027/-a-new-method-to-orthodontically-correct-dental-occlusal-plane-canting-wave-shaped-arch
#4
X Zheng, X X Hu, N Ma, X H Chen
OBJECTIVE: To introduce a technique of second order wave-shaped arch wire to orthodontically treat dental occlusal plane canting (DOPC) with left-right interactive anchorage, and to test its clinical efficacy. METHODS: Among the permanent dentition malocclusion patients who showed no obvious facial asymmetry, we screened for patients who showed anterior occlusal plane canting (AOPC) after routine orthodontic examination, treatment planning, MBT fixed appliance installation and serial arch wires alignment...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28197566/lateral-and-flexural-phonon-thermal-transport-in-graphene-and-stanene-bilayers
#5
Yang Hong, Chongqin Zhu, Minggang Ju, Jingchao Zhang, Xiao Cheng Zeng
Stanene, a low thermal conductivity two-dimensional (2D) sheet composed of group-IV element Sn, is a prototype material with novel properties such as 2D topological insulating behavior and near-room-temperature quantum Hall effects. Monolayer graphene, on the other hand, possesses unusual thermal properties, but has a zero bandgap. By stacking stanene and graphene monolayers vertically into a hetero-bilayer, an indirect bandgap can be obtained, making the hetero-bilayer a good candidate for special applications...
February 15, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28186807/observation-of-mode-locked-spatial-laser-solitons
#6
F Gustave, N Radwell, C McIntyre, J P Toomey, D M Kane, S Barland, W J Firth, G-L Oppo, T Ackemann
A stable nonlinear wave packet, self-localized in all three dimensions, is an intriguing and much sought after object in nonlinear science in general and in nonlinear photonics in particular. We report on the experimental observation of mode-locked spatial laser solitons in a vertical-cavity surface-emitting laser with frequency-selective feedback from an external cavity. These spontaneously emerging and long-term stable spatiotemporal structures have a pulse length shorter than the cavity round-trip time and may pave the way to completely independent cavity light bullets...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28178320/variations-in-the-structural-and-functional-diversity-of-zooplankton-over-vertical-and-horizontal-environmental-gradients-en-route-to-the-arctic-ocean-through-the-fram-strait
#7
Marta Gluchowska, Emilia Trudnowska, Ilona Goszczko, Anna Maria Kubiszyn, Katarzyna Blachowiak-Samolyk, Waldemar Walczowski, Slawomir Kwasniewski
A multi-scale approach was used to evaluate which spatial gradient of environmental variability is the most important in structuring zooplankton diversity in the West Spitsbergen Current (WSC). The WSC is the main conveyor of warm and biologically rich Atlantic water to the Arctic Ocean through the Fram Strait. The data set included 85 stratified vertical zooplankton samples (obtained from depths up to 1000 metres) covering two latitudinal sections (76°30'N and 79°N) located across the multi-path WSC system...
2017: PloS One
https://www.readbyqxmd.com/read/28159582/a-comparative-evaluation-of-cbct-outcomes-of-two-closed-treatment-methods-in-intracapsular-condylar-fractures
#8
Yanmei Tang, Min Zhu, Xiaoling Wang, Yanfei Zhu, Huijun Sun
PURPOSE: The cone beam computed tomography (CBCT) images of 2 closed treatments are compared for intracapsular condylar fractures (ICFs) to learn whether splint treatment could promote better radiologic outcomes. PATIENTS AND METHODS: Fifty-four patients with 60 sides of ICF were divided into 2 groups. In the control group (C-group), patients had a liquid diet for 1 month. In the trial group (T-group), patients wore splints with anterior elastic traction. Local CBCT images of the temporomandibular joint were obtained at T0 (mean 8...
December 7, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28158076/glass-processing-with-pulsed-co-sub-2-sub-laser-radiation
#9
Christian Weingarten, Emrah Uluz, Andreas Schmickler, Karsten Braun, Edgar Willenborg, André Temmler, Sebastian Heidrich
Recent results of processing fused silica using a high-power Q-switched CO<sub>2</sub> laser source with a maximum output power of 200 W are presented. Compared to the processing with continuous wave laser radiation, the main advantage of pulsed laser radiation is the influence of the light-matter interaction with high laser peak power at small average laser power. An application for the approach presented in this paper is the flexible manufacturing and form correction of optics. This laser-based process is nearly independent of the surface geometry and can even be enhanced by laser polishing and expanded to other glass materials...
February 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28153164/growth-changes-in-the-anterior-and-middle-cranial-bases-assessed-with-cone-beam-computed-tomography-in-adolescents
#10
Mona Afrand, Heesoo Oh, Carlos Flores-Mir, Manuel O Lagravère-Vich
INTRODUCTION: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks. METHODS: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28139938/changes-in-pharyngeal-airway-dimensions-and-hyoid-bone-position-after-maxillary-protraction-with-different-alternate-rapid-maxillary-expansion-and-construction-protocols-a-prospective-clinical-study
#11
Mevlut Celikoglu, Muhammet Hilmi Buyukcavus
OBJECTIVE: To evaluate the changes in pharyngeal airway dimensions and the position of the hyoid bone after maxillary protraction with different alternate rapid maxillary expansion and construction (Alt-RAMEC) protocols in patients with skeletal class III malocclusion as a result of maxillary retrusion. MATERIAL AND METHODS: The patients with skeletal class III malocclusions were consecutively divided into two groups. Group 1 consisted of 17 patients (11 boys and 6 girls, mean age 11...
January 31, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28131612/associations-between-occlusion-jaw-relationships-craniofacial-dimensions-and-the-occurrence-of-palatally-displaced-canines
#12
Fariborz Amini, Shayesteh Hamedi, Mona Haji Ghadimi, Vahid Rakhshan
BACKGROUND AND PURPOSE: Cephalometric and arch measurements might predict the occurrence of a palatally-displaced impacted maxillary canine (PDC). Despite their clinical importance, studies in this regard are limited and controversial. METHODS: In this case-control study, 35 PDC patients and 77 controls aged over 13 years were examined. Eleven cephalometric measurements: N-S, ANS-PNS, ANS-N, S-N-ANS, facial angle (FH/NPog), SNA, SNB, Y-axis (SN/SGn), gonial angle, Go-Gn/SN, and Jarabak Index were performed...
January 25, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28125519/maxillary-sinus-dimensions-decrease-as-age-and-tooth-loss-increase
#13
Miguel Velasco-Torres, Miguel Padial-Molina, Gustavo Avila-Ortiz, Raúl García-Delgado, Francisco OʼValle, Andrés Catena, Pablo Galindo-Moreno
OBJECTIVE: To investigate the correlation between patient-dependent variables and dimensional variations of the maxillary sinus. METHODS: In this cross-sectional study, a total of 394 individual cone-beam computed tomography scans were evaluated by one calibrated examiner to measure the total volume of the maxillary sinus, the distance between the medial and the lateral walls at 5, 10, and 15 mm vertically from the sinus floor, the height of septa (if present), and the height of the maxillary sinus cavity from both the alveolar crest and the sinus floor to the meatus...
January 25, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28118512/prosthodontic-rehabilitation-for-a-patient-with-down-syndrome-a-clinical-report
#14
Nasser M Alqahtani, Hussain D Alsayed, John A Levon, David T Brown
Patients with Down syndrome can present with a variety of oral manifestations such as hypodontia, periodontal disease, premature tooth loss, reduced salivary flow, crowding of teeth in both arches, and decreased occlusal vertical dimension. The intellectual ability of people with Down syndrome varies widely. They present with a mild-to-moderate intellectual disability that restricts their ability to communicate and adjust to their environment, which can add complexity in the overall dental treatment. There is little information in the literature regarding the prosthodontic rehabilitation for patients with Down syndrome in combination with dental implant placement...
January 24, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28114264/alveolar-ridge-splitting-versus-autogenous-onlay-bone-grafting-complications-and-implant-survival-rates
#15
Nur Altiparmak, S S Akdeniz, B Bayram, S Gulsever, S Uckan
PURPOSE: To compare the complications and implant survival rates of localized alveolar ridge deficiencies in the horizontal dimension reconstructed by alveolar ridge splitting (ARS) or autogenous onlay bone grafting (OBG). MATERIALS AND METHODS: Twenty-eight ARS and 28 OBG were performed. The survival rate of the all included implants was evaluated using the clinical and radiographical evaluation criteria of Misch et al. Temporary exposure of graft, mild infection, temporary paresthesia, and bad split were defined as minor complications; permanent exposure of graft, loss of graft, and permanent paresthesia were defined as major complications...
January 19, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28114218/three-dimensional-evaluation-of-the-upper-airway-in-children-of-skeletal-class-iii
#16
Jingjing Zhang, Weitao Liu, Weiran Li, Xuemei Gao
The present study was aimed to investigate the relationship of the upper airway size and craniofacial structures in 3 dimensions in growing children of skeletal Class III. Forty-seven children (19 boys and 28 girls, 9.6 ± 1.3 years of age, range 8.0-12.4 years) were selected. Twenty-three children with normal vertical development were divided into groups of insufficient maxilla and overdeveloped mandible for the airway comparison between different sagittal skeletal patterns. Thirty-two children with the same sagittal development were divided into groups of low angle, normal angle, and high angle for the comparison between different vertical skeletal developments...
January 20, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28113351/a-fast-algorithm-of-convex-hull-vertices-selection-for-online-classification
#17
Shuguang Ding, Xiangli Nie, Hong Qiao, Bo Zhang
Reducing samples through convex hull vertices selection (CHVS) within each class is an important and effective method for online classification problems, since the classifier can be trained rapidly with the selected samples. However, the process of CHVS is NP-hard. In this paper, we propose a fast algorithm to select the convex hull vertices, based on the convex hull decomposition and the property of projection. In the proposed algorithm, the quadratic minimization problem of computing the distance between a point and a convex hull is converted into a linear equation problem with a low computational complexity...
January 20, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28111681/shape-and-crystallographic-orientation-of-nanodiamonds-for-quantum-sensing
#18
S Y Ong, M Chipaux, A Nagl, R Schirhagl
Nanodiamonds with dimensions down to a few tens of nanometers containing nitrogen-vacancy (NV) color centers have revealed their potential as powerful and versatile quantum sensors with a unique combination of spatial resolution and sensitivity. The NV centers allow transducing physical properties, such as strain, temperature, and electric or magnetic field, to an optical transition that can be detected in the single photon range. For example, this makes it possible to sense a single electron spin or a few nuclear spins by detecting their magnetic resonance...
January 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28103278/systematic-influence-of-perceived-grasp-shape-on-speech-production
#19
Lari Vainio, Aleksi Rantala, Mikko Tiainen, Kaisa Tiippana, Naeem Komeilipoor, Martti Vainio
Previous research has shown that precision and power grip performance is consistently influenced by simultaneous articulation. For example, power grip responses are performed relatively fast with the open-back vowel [a], whereas precision grip responses are performed relatively fast with the close-front vowel [i]. In the present study, the participants were presented with a picture of a hand shaped to the precision or power grip. They were required to pronounce speech sounds according to the front/above perspective of the hand...
2017: PloS One
https://www.readbyqxmd.com/read/28089337/a-procedure-for-directly-measuring-the-physiologic-rest-position-and-occlusal-vertical-dimension
#20
Joseph E Makzoumé
No abstract text is available yet for this article.
January 12, 2017: Journal of Prosthetic Dentistry
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