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Dimension vertical

Kristina Stanković, Brian G Booth, Femke Danckaers, Fien Burg, Philippe Vermaelen, Saartje Duerinck, Jan Sijbers, Toon Huysmans
Background: Foot morphology has received increasing attention from both biomechanics researches and footwear manufacturers. Usually, the morphology of the foot is quantified by 2D footprints. However, footprint quantification ignores the foot's vertical dimension and hence, does not allow accurate quantification of complex 3D foot shape. Methods: The shape variation of healthy 3D feet in a population of 31 adult women and 31 adult men who live in Belgium was studied using geometric morphometric methods...
2018: Journal of Foot and Ankle Research
Maria Paço, Paula Chaves, Francisco Pinho, Carolina Lemos, Rui Costa, José A Duarte, Teresa Pinho
INTRODUCTION: Temporomandibular disorders (TMDs) present several risks and different contributing factors with consequently diverse treatment approaches. It is important to recognize what patients' characteristics may benefit from orthodontics, from physiotherapy, from other treatment modalities or even from a combined approach. CASES PRESENTATION: We present three cases of patients with common TMDs signs and/or symptoms and different treatment approaches and outcomes, and our aim is to understand what might explain the different outcomes observed and also provide a rationale about the skeletal, muscular, facial and occlusal characteristics that may be indicative of a particular intervention benefit...
March 11, 2018: International Orthodontics
Marion Semmler, Michael Döllinger, Rita R Patel, Anke Ziethe, Anne Schützenberger
OBJECTIVE/HYPOTHESIS: Laser-based three-dimensional (3D) imaging allows realistic visualization and absolute measurement of the vocal folds for comprehensive characterization of the oscillation pattern. STUDY DESIGN: Exploratory study with descriptive data analysis in healthy cohort. METHODS: The custom-developed miniaturized measuring device is an endoscopic camera-laser setup for stereo triangulation and suitable for in vivo application...
March 14, 2018: Laryngoscope
G Begnoni, G Serrao, F Musto, G Pellegrini, F M Triulzi, C Dellavia
INTRODUCTION: The development of skeletal structures (cranial base, upper and lower) and upper airways spaces (oropharyngeal and nasopharyngeal) of the skull has always been an issue of great interest in orthodontics. Foetal MRI images obtained as screening exam during pregnancy can help to understand the development of these structures using a sample cephalometric analysis. MATERIAL AND METHODS: A total of 28 MRI images in sagittal section of foetuses from 20th to 32th weeks of gestation were obtained to dispel doubts about the presence of skeletal malformations...
March 13, 2018: Orthodontics & Craniofacial Research
Jonathan P Wiens, Gary R Goldstein, Mark Andrawis, Mijin Choi, Jennifer W Priebe
STATEMENT OF PROBLEM: Multiple definitions of centric relation (CR) have evolved over time that may have created confusion or impeded understanding. A recent attempt to achieve a singular definition by surveying the members of the Academy of Prosthodontics (AP) did not achieve majority consensus. PURPOSE: The purpose of this study was to identify those aspects or attributes within the existing definitions of CR in which there was agreement or disagreement among the members of the AP...
March 8, 2018: Journal of Prosthetic Dentistry
Xueyin An, Jing-Huan Fang, Seung-Mi Jeong, Byung-Ho Choi
An interim restoration is a prototype for the definitive prosthesis and preserves the occlusal information and the original vertical dimension of the occlusion. Several techniques have been developed to transfer the information from implant-supported fixed interim to definitive restoration. However, these conventional techniques have limitations, and they are time-consuming, require making impressions and stone casts, and mounting in an articulator. The purpose of this article was to describe a digital technique to accurately transfer the information from complete-arch implant interim restoration to definitive restorations without using definitive casts...
March 8, 2018: Journal of Prosthetic Dentistry
Yiqin Fang, Jing-Huan Fang, Seung-Mi Jeong, Byung-Ho Choi
Few studies have reported the application of digital technology for the process of impression and interocclusal recordings in edentulous patients. This article describes a digitizing system for generating digital edentulous models with a jaw relationship by taking direct digital impressions and a virtual bite registration using intraoral digital scanning. A specialized scan retractor was used to make digital impressions of edentulous jaws in patients' mouths using an intraoral scanner. Virtual bite registration was obtained with optical scanning of the buccal surfaces of both jaws at the occlusal vertical dimension...
March 9, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Chaeeun Kim, Jun-Cheol Park, Sun Young Choi, Yonghun Kim, Seung-Young Seo, Tae-Eon Park, Se-Hun Kwon, Byungjin Cho, Ji-Hoon Ahn
2D layered materials with sensitive surfaces are promising materials for use in chemical sensing devices, owing to their extremely large surface-to-volume ratios. However, most chemical sensors based on 2D materials are used in the form of laterally defined active channels, in which the active area is limited to the actual device dimensions. Therefore, a novel approach for fabricating self-formed active-channel devices is proposed based on 2D semiconductor materials with very large surface areas, and their potential gas sensing ability is examined...
March 9, 2018: Small
Paul de Cates, Katherine Owen, Colin Francis Macdougall
Medical curricula vary hugely across the world. Notions of horizontal and vertical integration and spiral curricula are present in many modern curricula although true integration happens to a varying degree. By seeing the development of a curriculum as fundamentally about integration, rather than as a process of seeking to integrate separate elements, we have developed a program that prepares students well for the complexities and rate of change of practice. The risks inherent in bringing forward the point at which learners need to deal with such substantive and fundamental complexity produces challenges...
March 9, 2018: Medical Teacher
Yu Han, Qiang Li, Kai Wei Ng, Si Zhu, Kei May Lau
We report the growth of vertically stacked InGaAs/InP quantum wires on (001) Si substrates with adjustable room-temperature emission at telecom bands. Based on a self-limiting growth mode in selective area metal-organic chemical vapor deposition, crescent-shaped InGaAs quantum wires with variable dimensions are embedded within InP nano-ridges. With extensive transmission electron microscopy studies, the growth transition and morphology change from quantum wires to ridge quantum wells have been revealed. As a result, we are able to decouple the quantum wires from ridge quantum wells and manipulate their dimensions by scaling the growth time...
March 8, 2018: Nanotechnology
Zhao Ma, Wei Zhang, Yi Su, Peiji Liu, Yinghua Pan, Gang Zhang, Yipeng Song
Background: The Optical Surface Management System (OSMS) is a simple, fast, reproducible, and accurate solution for patient set-up and can minimize random day-to-day set-up errors. However, studies in breast cancer patients are rare. Objective: To analyze 200 patient set-ups in 20 patients with breast cancer by comparing the OSMS with the conventional cone-beam computed tomography (CBCT). Method: Displacements from concurrent OSMS and CBCT registrations were compared in a total of 200 setups of 20 patients to analyze the interfractional displacement and positioning displacement in three dimensions (lateral, longitudinal, and vertical directions)...
2018: BioMed Research International
Bonan Jin, Xiaosu Xu, Tao Zhang
Finding the position of a radiative source based on time-difference-of-arrival (TDOA) measurements from spatially separated receivers has been widely applied in sonar, radar, mobile communications and sensor networks. For the nonlinear model in the process of positioning, Taylor series and other novel methods are proposed. The idea of cone constraint provides a new way of solving this problem. However, these approaches do not always perform well and are away from the Cramer-Rao-Lower-Bound (CRLB) in the situations when the source is set at the array edge, the noise in measurement is loud, or the initial position is biased...
March 4, 2018: Sensors
Michelle R Gaither, Georgios A Gkafas, Menno de Jong, Fatih Sarigol, Francis Neat, Thomas Regnier, Daniel Moore, Darren R Grӧcke, Neil Hall, Xuan Liu, John Kenny, Anita Lucaci, Margaret Hughes, Sam Haldenby, A Rus Hoelzel
Intraspecific diversity promotes evolutionary change, and when partitioned among geographic regions or habitats can form the basis for speciation. Marine species live in an environment that can provide as much scope for diversification in the vertical as in the horizontal dimension. Understanding the relevant mechanisms will contribute significantly to our understanding of eco-evolutionary processes and effective biodiversity conservation. Here, we provide an annotated genome assembly for the deep-sea fish Coryphaenoides rupestris and re-sequencing data to show that differentiation at non-synonymous sites in functional loci distinguishes individuals living at different depths, independent of horizontal spatial distance...
March 5, 2018: Nature Ecology & Evolution
Cristina Valles, Xavier Rodriguez-Ciurana, Fernando Muñoz, Maria Permuy, Henar López-Alonso, Jose Nart
OBJECTIVES: To analyze bone remodeling and peri-implant soft tissues around platform-switching implants with and without a machined collar placed at different levels in relation to bone crest. MATERIAL AND METHODS: All mandibular premolars and the first molars were extracted in five dogs. At 6 months, six implants with and without a machined neck (MACH and GBAE implants, respectively) were randomly inserted in each hemimandible positioning the implant-abutment interface in either a supracrestal (+1...
March 5, 2018: Journal of Clinical Periodontology
Myung Hee Chung, Bo Mi Gil, Soon Seog Kwon, Hae-Il Park, Sun Wha Song, Na Young Jung, Won Jong Yoo
OBJECTIVES: To determine what computed tomographic (CT) dimensions can predict obstructive lung disease on routine chest CT scans by comparing morphological and densitometric CT findings with pulmonary function test (PFT) in normal subjects and patients with chronic obstructive pulmonary disease (COPD). MATERIALS AND METHODS: Consecutive patients (n = 646; 260 females and 386 males; mean age 54.9 years, ranged 20-90 years) who received chest CT scans with densitometry during a 3-month period were retrospectively analyzed in single center...
March 2018: European Journal of Radiology
B Loomans, N Opdam
This paper explains a conservative, pragmatic and minimally invasive intervention concept for the treatment of severe tooth wear patients based on the Radboud Tooth Wear Project in the Netherlands. Guidelines and flowcharts for management of severe tooth wear patients and rehabilitation in increased vertical dimension of occlusion are presented. We concluded that: (a) Restorative treatment is not always indicated, even for patients with severe tooth wear. (b) If the patient has no complaints, counselling and monitoring is probably the best option...
March 2, 2018: British Dental Journal
Benjamin F Mentiplay, Ksaniel Hasanki, Luke G Perraton, Yong-Hao Pua, Paula C Charlton, Ross A Clark
The Microsoft Xbox One Kinect™ (Kinect V2) contains a depth camera that can be used to manually identify anatomical landmark positions in three-dimensions independent of the standard skeletal tracking, and therefore has potential for low-cost, time-efficient three-dimensional movement analysis (3DMA). This study examined inter-session reliability and concurrent validity of the Kinect V2 for the assessment of coronal and sagittal plane kinematics for the trunk, hip and knee during single leg squats (SLS) and drop vertical jumps (DVJ)...
March 1, 2018: Journal of Sports Sciences
Katherine B Martin, Zakia Hammal, Gang Ren, Jeffrey F Cohn, Justine Cassell, Mitsunori Ogihara, Jennifer C Britton, Anibal Gutierrez, Daniel S Messinger
Background: Deficits in motor movement in children with autism spectrum disorder (ASD) have typically been characterized qualitatively by human observers. Although clinicians have noted the importance of atypical head positioning (e.g. social peering and repetitive head banging) when diagnosing children with ASD, a quantitative understanding of head movement in ASD is lacking. Here, we conduct a quantitative comparison of head movement dynamics in children with and without ASD using automated, person-independent computer-vision based head tracking (Zface)...
2018: Molecular Autism
Christophe Z Martin, Jessica X Brooks, Andrea M Green
Many daily behaviors rely critically on estimates of our body motion. Such estimates must be computed by combining neck proprioceptive signals with vestibular signals that have been transformed from a head- to a body-centered reference frame. Recent studies showed that deep cerebellar neurons in the rostral fastigial nucleus (rFN) reflect these computations, but whether they explicitly encode estimates of body motion remains unclear. A key limitation in addressing this question is that to date cell tuning properties have only been characterized for a restricted set of motions across head-re-body orientations in the horizontal plane...
February 27, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Changwei Lü, Jiang He, Bing Wang
The chemistry of sedimentary organic phosphorus (OP) and its fraction distribution in sediments are greatly influenced by environmental conditions such as terrestrial inputs and runoffs. The linkage of OP with environmental conditions was analyzed on the basis of OP spatial and historical distributions in lake sediments. The redundancy analysis and OP spatial distribution results suggested that both NaOH-OP (OP extracted by NaOH) and Re-OP (residual OP) in surface sediments from the selected 13 lakes reflected the gradient effects of environmental conditions and the autochthonous and/or allochthonous inputs driven by latitude zonality in China...
February 2018: Journal of Environmental Sciences (China)
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