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https://www.readbyqxmd.com/read/29339203/clinical-performance-of-full-rehabilitations-with-direct-composite-in-severe-tooth-wear-patients-3-5-years-results
#1
B A C Loomans, C M Kreulen, H E C E Huijs-Visser, B A M A Sterenborg, E M Bronkhorst, M C D N J M Huysmans, N J M Opdam
OBJECTIVES: To evaluate the mid-term clinical performance of direct composite restorations placed in patients with pathological tooth wear needing full rehabilitation with an increase of vertical dimension of occlusion. METHODS: In a prospective trial 34 patients (34.0 ± 8.4 years; 25 males, 9 females) were treated with a minimal invasive additive technique using composite restorations. The restorative treatment protocol was to provide all teeth with composite build-up restorations in an increased vertical dimension of occlusion (VDO) using the DSO-technique...
January 12, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29337630/ethnic-differences-in-craniofacial-and-upper-spine-morphology-in-children-with-skeletal-class-ii-malocclusion
#2
Eunhye Oh, Sug-Joon Ahn, Liselotte Sonnesen
OBJECTIVES: To analyze differences in upper cervical spine and craniofacial morphology, including posterior cranial fossa and growth prediction signs, between Danish and South Korean pre-orthodontic skeletal Class II children and to analyze associations between upper cervical spine morphology and craniofacial characteristics. MATERIALS AND METHODS: One hundred forty-six skeletal Class II children-93 Danes (54 boys and 39 girls, mean age 12.2 years) and 53 Koreans (27 boys and 26 girls, mean age 10...
January 16, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29333323/alveolar-ridge-preservation-with-an-open-healing-approach-using-single-layer-or-double-layer-coverage-with-collagen-membranes
#3
Ho-Keun Choi, Hag-Yeon Cho, Sung-Jo Lee, In-Woo Cho, Hyun-Seung Shin, Ki-Tae Koo, Hyun-Chang Lim, Jung-Chul Park
Purpose: The aim of this prospective pilot study was to compare alveolar ridge preservation (ARP) procedures with open-healing approach using a single-layer and a double-layer coverage with collagen membranes using radiographic and clinical analyses. Methods: Eleven molars from 9 healthy patients requiring extraction of the maxillary or mandibular posterior teeth were included and allocated into 2 groups. After tooth extraction, deproteinized bovine bone mineral mixed with 10% collagen was grafted into the socket and covered either with a double-layer of resorbable non-cross-linked collagen membranes (DL group, n=6) or with a single-layer (SL group, n=5)...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29328984/does-college-major-matter-for-women-s-and-men-s-health-in-midlife-examining-the-horizontal-dimensions-of-educational-attainment
#4
Jennifer Karas Montez, Wencheng Zhang, Anna Zajacova, Tod G Hamilton
Studies on how education shapes adult health have largely conceptualized education as the quantity of schooling attained, coined the "vertical dimension" of education. While this dimension is important, heterogeneity within levels of education (the "horizontal dimension") may also shape health. Using data from the 2010-2014 American Community Survey on adults aged 45-64 with a Bachelor's degree (N = 667,362), we investigate the association between a key indicator of adult health (physical functioning) and an understudied horizontal dimension of education (college major)...
January 6, 2018: Social Science & Medicine
https://www.readbyqxmd.com/read/29310879/fracture-analysis-of-cad-cam-high-density-polymers-used-for-interim-implant-supported-fixed-cantilevered-prostheses
#5
Burak Yilmaz, Gülce Alp, Jeremy Seidt, William M Johnston, Roger Vitter, Edwin A McGlumphy
STATEMENT OF PROBLEM: The load-to-fracture performance of computer-assisted design and computer-assisted manufacturing (CAD-CAM) high-density polymer (HDP) materials in cantilevers is unknown. PURPOSE: The purposes of this in vitro study were to evaluate the load-to-fracture performance of CAD-CAM-fabricated HDPs and to compare that with performance of autopolymerized and injection-molded acrylic resins. MATERIAL AND METHODS: Specimens from 8 different brands of CAD-CAM HDPs, including Brylic Solid (BS); Brylic Gradient (BG); AnaxCAD Temp EZ (AE); AnaxCAD Temp Plus (AP); Zirkonzahn Temp Basic (Z); GDS Tempo-CAD (GD); Polident (Po); Merz M-PM-Disc (MAT); an autopolymerized acrylic resin, Imident (Conv) and an injection-molded acrylic resin, SR-IvoBase High Impact (Inj) were evaluated for load-to-fracture analysis (n=5)...
January 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29303550/electric-field-guided-precision-manipulation-of-catalytic-nanomotors-for-cargo-delivery-and-powering-nanoelectromechanical-devices
#6
Jianhe Guo, Jeremie June Gallegos, Ashley Robyn Tom, Donglei Fan
We report a controllable and precision approach in manipulating catalytic nanomotors by strategically applied electric (E-) fields in three dimensions (3-D). With the high controllability, the catalytic nanomotors have demonstrated versatility in capturing, delivering, and releasing of cargos to designated locations as well as in-situ integration with nanomechanical devices (NEMS) to chemically power the actuation. With combined AC and DC E-fields, catalytic nanomotors can be accurately aligned by the AC E-fields and effectively change their speeds instantly by the DC E-fields...
January 5, 2018: ACS Nano
https://www.readbyqxmd.com/read/29302293/orthodontics-and-veneers-to-restore-the-anterior-guidance-a-minimally-invasive-approach
#7
Vicente Faus-Matoses, Ignacio Faus-Matoses, Ana Jorques-Zafrilla, Vicente J Faus-Llácer
Tooth wear is defined as the progressive loss of a tooth's surface due to actions other than those which cause tooth decay or dental trauma. It is a pathological condition with an increasing prevalence among young people. The aim of this article is to describe an alternative treatment modality to rehabilitate the anterior guidance by a minimally invasive interdisciplinary ortho-restorative treatment. Two patients came to the dental clinic for restorative treatment in order to rehabilitate the worn anterior dentition...
November 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29301768/topography-guided-identification-of-leakage-point-in-central-serous-chorioretinopathy-a-base-for-fluorescein-angiography-free-focal-laser-photocoagulation
#8
Dmitrii S Maltsev, Alexei N Kulikov, Jay Chhablani
PURPOSE: To identify optical coherence tomography (OCT) findings associated with the leakage points in patients with central serous chorioretinopathy (CSC) to provide fluorescein angiography (FA)-free focal laser photocoagulation (FLP) of the leakage point. METHODS: A retrospective study included 48 patients with CSC (48 eyes). Colocalisation of leakage points with pigment epithelial detachments (PEDs) and with areas of photoreceptor outer segments (PROS) layer thinning was evaluated with OCT...
January 4, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29296486/three-dimensional-side-view-endomicroscope-for-tracking-individual-cells-in-vivo
#9
Xiyu Duan, Haijun Li, Fa Wang, Xue Li, Kenn R Oldham, Thomas D Wang
We demonstrate a side-view endomicroscope using a monolithic 3-axis scanner placed in the post-objective position that performs either tilt or piston motion to achieve either optical scan angles >10° or large vertical displacements, respectively. This configuration allows for scaling down of instrument dimensions for high maneuverability and accurate positioning in vivo. Images exceeded either 700 × 600 μm2 in the horizontal plane or vertical depths of 200 μm. Resolution of 1.19 and 3.46 μm was obtained in the horizontal and oblique planes, respectively...
December 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29285336/surgiplanner-a-new-method-for-one-step-oral-rehabilitation-of-severe-atrophic-maxilla
#10
A Busato, V Vismara, F Grecchi, E Grecchi, D Lauritano
The implant-prosthetic rehabilitation of edentulous upper jaws has always been complex for surgeons and dentists. The lack of bone in both vertical and horizontal dimension does not allow the correct insertion of dental implants. In addition, patients with edentulous upper and lower arch have a loss of vertical dimension of the face and an aged expression. Many surgical techniques have been proposed to increase the bone volume, height and thickness, such as the Le Fort I osteotomy, the bone grafts and the placement of dental implants...
July 2017: Oral & Implantology
https://www.readbyqxmd.com/read/29279752/difference-in-spinal-sagittal-alignment-and-health-related-quality-of-life-between-males-and-females-with-cervical-deformity
#11
Shin Oe, Daisuke Togawa, Go Yoshida, Tomohiko Hasegawa, Yu Yamato, Sho Kobayashi, Tatsuya Yasuda, Tomohiro Banno, Yuki Mihara, Yukihiro Matsuyama
Study Design: Large cohort study. Purpose: To clarify spinal sagittal alignment and health-related quality of life (HRQOL) according to sex in volunteers aged >50 years with cervical deformity (CD). Overview of Literature: Adult spinal deformities, especially those associated with lumbosacral lesions, are more frequent in females; however, CD is observed to a greater extent in males. Methods: We divided 656 volunteers (263 males, 393 females; age, 50-89 years [mean, 73 years]) as follows: males with CD (CDM; 82 patients); males without CD (NCDM, 181); females with CD (CDF, 36); and females without CD (NCDF, 357)...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29279680/smile-esthetics-impact-of-variations-in-the-vertical-and-horizontal-dimensions-of-the-maxillary-lateral-incisors
#12
Amjad Al Taki, Ahmad Mohammad Hamdan, Ziad Mustafa, Mawada Hassan, Sami Abu-Alhuda
Objective: The purpose of this study was to determine the perception of trained dental professionals and laypersons toward the esthetic impact of variations in the vertical position, width, and gingival height of the maxillary lateral incisor. Materials and Methods: The present study analyzed the perspective of smile photographs by dental professionals such as "fifty orthodontics and fifty general dental practitioners (GDPs)" as well as fifty laypersons, consisting of an equal number of male and female participants...
October 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/29278372/influence-of-chromium-cobalt-molybdenum-alloy-astm-f75-on-bone-ingrowth-in-an-experimental-animal-model
#13
Jésica Zuchuat, Marcelo Berli, Ysaí Maldonado, Oscar Decco
Cr-Co-Mo (ASTM F75) alloy has been used in the medical environment, but its use as a rigid barrier membrane for supporting bone augmentation therapies has not been extensively investigated. In the present study, Cr-Co-Mo membranes of different heights were placed in New Zealand white, male rabbit tibiae to assess the quality and volume of new bone formation, without the use of additional factors. Animals were euthanized at 20, 30, 40, and 60 days. Bone formation was observed in all of the cases, although the tibiae implanted with the standard membranes reached an augmentation of bone volume that agreed with the density values over the timecourse...
December 26, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29275170/complete-rehabilitation-of-compromised-full-dentitions-with-adhesively-bonded-all-ceramic-single-tooth-restorations-long-term-outcome-in-patients-with-and-without-amelogenesis-imperfecta
#14
Andrea Klink, Martin Groten, Fabian Huettig
OBJECTIVES: This clinical follow-up evaluated the long-term outcome of full-mouth rehabilitations with adhesively bonded all-ceramic restorations in patients suffering from amelogenesis imperfecta (AI) or affected by extensive tooth wear including a loss of the vertical dimension of occlusion. MATERIALS AND METHODS: Included for evaluation were all patients treated with adhesively bonded monolithic single-tooth restorations made of silicate or lithium disilicate ceramics; allowing a maximum four missing teeth and a facial feldspathic veneering of LDS anterior crowns...
December 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29274951/correlation-between-the-posterior-mandibular-width-and-the-lingual-gap-caused-by-symphyseal-fractures-using-a-virtual-model
#15
Christian Pedemonte Trewhela, Andrea Carmona Avendaño, Edgardo González Mora, Ilich Vargas Farren, Francisco Lopetegui Caceres, Erick Rojas Quiroz
PURPOSE: The objective was to determine the dimensional impact, on the occlusal and articular level, of the gap produced in the lingual plate from symphyseal fractures, correlated with the dimensional change in the posterior mandibular width. MATERIALS AND METHODS: We performed an observational experimental study based on 30 computed tomography scans of patients treated by the Maxillofacial Surgery Service, Hospital Clínico Mutual de Seguridad, Santiago, Chile, between 2012 and 2016...
December 7, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29250718/vertical-skeletal-changes-after-extraction-and-non-extraction-treatment-in-matched-class-i-patients-identified-by-a-discriminant-analysis-cephalometric-appraisal-and-procrustes-superimposition
#16
Philipp Beit, Dimitrios Konstantonis, Alexandros Papagiannis, Theodore Eliades
BACKGROUND: In the long-lasting debate of extraction versus non-extraction treatment, the impact of extractions on the skeletal vertical dimension remains rather unclear. The aim of this retrospective research study was to obtain a bias-free sample of morphologically similar borderline patients treated with or without extraction of the four first premolars and to retrospectively evaluate the vertical changes that occurred. METHODS: A borderline sample of 83 patients, 41 treated with four first premolar extractions and 42 treated without, was obtained by means of discriminant analysis applied to a previously investigated parent sample of 542 class I patients...
December 18, 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/29232892/new-three-dimensional-porous-electrode-concept-vertically-aligned-carbon-nanotubes-directly-grown-on-embroidered-copper-structures
#17
Noemí Aguiló-Aguayo, Roger Amade, Shahzad Hussain, Enric Bertran, Thomas Bechtold
New three-dimensional (3D) porous electrode concepts are required to overcome limitations in Li-ion batteries in terms of morphology (e.g., shapes, dimensions), mechanical stability (e.g., flexibility, high electroactive mass loadings), and electrochemical performance (e.g., low volumetric energy densities and rate capabilities). Here a new electrode concept is introduced based on the direct growth of vertically-aligned carbon nanotubes (VA-CNTs) on embroidered Cu current collectors. The direct growth of VA-CNTs was achieved by plasma-enhanced chemical vapor deposition (PECVD), and there was no application of any post-treatment or cleaning procedure...
December 11, 2017: Nanomaterials
https://www.readbyqxmd.com/read/29226297/pathway-engineering-for-highly-aligned-block-copolymer-arrays
#18
Youngwoo Choo, Paweł W Majewski, Masafumi Fukuto, Chinedum O Osuji, Kevin G Yager
While the ultimate driving force in self-assembly is energy minimization and the corresponding evolution towards equilibrium, kinetic effects can also play a very strong role. These kinetic effects, such as trapping in metastable states, slow coarsening kinetics, and pathway-dependent assembly, are often viewed as complications to be overcome. Here, we instead exploit these effects to engineer a desired final nano-structure in a block copolymer thin film, by selecting a particular ordering pathway through the self-assembly energy landscape...
December 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/29222730/morphology-and-morphometry-of-lacrimal-drainage-system-in-relation-to-bony-landmarks-in-caucasian-adults-a-cadaveric-study
#19
Mohammad Javed Ali, Martin Schicht, Friedrich Paulsen
PURPOSE: The objective of this study is to examine the morphometry of the lacrimal drainage system with reference to bony landmarks in the vicinity. METHODS: Twenty midsaggitalized heads obtained from sixteen preserved cadavers were studied. Measurements involved detailed morphometry of anterior and posterior lacrimal crests, bony lacrimal sac fossa, entrance and length of the bony nasolacrimal duct (NLD), attachment of Horner's muscle, and characteristics of the inferior meatal opening of the NLD...
December 8, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29203826/blink-associated-resetting-eye-movements-barms-are-functionally-complementary-to-microsaccades-in-correcting-for-fixation-errors
#20
Mohammad Farhan Khazali, Joern K Pomper, Peter Thier
Blinks do not only protect the eye, but they do also correct for torsional eye position deviations by blink-associated resetting eye movements (BARMs). Although BARMs are functionally distinct from other eye movements in the torsional dimension, it has remained open if BARMs observed in the horizontal and vertical dimensions (fixational BARMs) are not simply microsaccades coinciding with blinks. We show here that fixational BARMs are functionally distinct and complementary to microsaccades in the following way: First, they compensate for large fixational error more efficiently than microsaccades, secondly, their probability to be executed in eccentric eye positions is higher, and thirdly, they reset the eyes into a position zone that is broader as compared to microsaccades...
December 4, 2017: Scientific Reports
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