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https://www.readbyqxmd.com/read/28454154/photoacoustic-imaging-of-dental-implants-in-a-porcine-jawbone-ex-vivo
#1
Donghyun Lee, Sungjo Park, Woo-Chang Noh, Jae-Seung Im, Chulhong Kim
Currently, x-ray-based imaging is used before and after the dental implant treatment, but the ionizing radiation is potentially harmful to patients and operators. Here, we demonstrate ex vivo photoacoustic imaging of a dental implant embedded in a porcine jawbone. By layering biological tissue over the jawbone to mimic a clinical environment, we demonstrate 10 mm deep imaging. Our results show that photoacoustic imaging can provide jawbone anatomical information, the location of an embedded implant fixture, and the thickness of the soft tissue above the jawbone...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28439341/secukinumab-review-of-clinical-evidence-from-the-pivotal-studies-erasure-fixture-and-clear
#2
REVIEW
April W Armstrong, Kim Papp, Leon Kircik
No abstract text is available yet for this article.
June 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28434732/the-effect-of-a-furnished-individual-hutch-pre-weaning-on-calf-behavior-response-to-novelty-and-growth
#3
J A Pempek, M L Eastridge, K L Proudfoot
Housing preweaned dairy calves in individual outdoor hutches is common in North America. However, this type of housing lacks stimulation and minimizes calves' ability to express natural behavior. Providing a social companion has been shown to stimulate natural behavior and promote growth, but no research has assessed the effect of providing physical enrichment items to calves pre-weaning. The objective of this study was to determine calf use of physical items added to an individual hutch, and if providing these items affected growth, behavior (e...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28427837/in-vitro-fatigue-tests-and-in-silico-finite-element-analysis-of-dental-implants-with-different-fixture-abutment-joint-types-using-computer-aided-design-models
#4
Satoshi Yamaguchi, Yasufumi Yamanishi, Lucas S Machado, Shuji Matsumoto, Nick Tovar, Paulo G Coelho, Van P Thompson, Satoshi Imazato
PURPOSE: The aim of this study was to evaluate fatigue resistance of dental fixtures with two different fixture-abutment connections by in vitro fatigue testing and in silico three-dimensional finite element analysis (3D FEA) using original computer-aided design (CAD) models. METHODS: Dental implant fixtures with external connection (EX) or internal connection (IN) abutments were fabricated from original CAD models using grade IV titanium and step-stress accelerated life testing was performed...
April 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28406881/early-healing-evaluation-of-commercially-pure-titanium-and-ti-6al-4v-presenting-similar-surface-texture-an-in-vivo-study
#5
Arthur Castellano, Luiz F Gil, Estevam A Bonfante, Nick Tovar, Rodrigo Neiva, Malvin N Janal, Paulo G Coelho
OBJECTIVE: This study evaluated the osseointegration of commercially pure titanium (Ti) grade-2 (G2) and Ti-6Al-4V alloy (G5) implants with the same geometry and surface treatment. MATERIALS AND METHODS: Thirty-six dental implants with a grit-blasted acid-etched surface were used (n = 18, each). Two implants, one per group, were installed in each subject, in the radius diaphysis (n = 18 beagle dogs), with interchanged fixture position (proximal-distal) between animals for a balanced number of devices per group and time in vivo (1, 3, and 6 weeks)...
April 12, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28399658/evaluation-of-a-coplanar-6a3%C3%AF-configuration-in-the-hybrid-iii-50-th-percentile-male-head
#6
Yun-Seok Kang, Sam Goldman, Kevin Moorhouse, John Bolte
OBJECTIVES: In order to understand the mechanisms of TBI and develop proper safety measures, it is essential that accurate instrumentation methods are utilized. The Brain Injury Criterion (BrIC) has been developed and validated to predict brain injuries in combination with the head injury criterion (Takhounts et al., 2011 ; Takhounts et al., 2013 ). Being that the validated BrIC is heavily dependent on angular motion, the accuracy of any head instrumentation technique should be judged in part by its ability to measure angular motion...
April 11, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28398168/pre-game-perceived-wellness-highly-associates-with-match-running-performances-during-an-international-field-hockey-tournament
#7
Mohammed Ihsan, Frankie Tan, Sofyan Sahrom, Hui Cheng Choo, Michael Chia, Abdul Rashid Aziz
This study examined the associations between pre-game wellness and changes in match running performance normalised to either (i) playing time, (ii) post-match RPE or (iii) both playing time and post-match RPE, over the course of a field hockey tournament. Twelve male hockey players were equipped with global positioning system (GPS) units while competing in an international tournament (six matches over 9 days). The following GPS-derived variables, total distance (TD), low-intensity activity (LIA; <15 km/h), high-intensity running (HIR; >15 km/h), high-intensity accelerations (HIACC; >2 m/s(2)) and decelerations (HIDEC; >-2 m/s(2)) were acquired and normalised to either (i) playing time, (ii) post-match RPE or (iii) both playing time and post-match RPE...
June 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28391395/biomechanical-analysis-of-anterior-ring-fixation-of-the-ramus-in-type-c-pelvis-fractures
#8
S McLachlin, M Lesieur, D Stephen, H Kreder, C Whyne
PURPOSE: This biomechanical study compared the stability of four different ramus fracture fixation methods for Type C pelvic ring injuries in the absence of posterior fixation. METHODS: A 5-mm vertical osteotomy of the mid-superior and inferior pubic ramus was created in 12 synthetic pelvic models. Four surgical constructs were compared: (1) two-pin AIIS external fixation, (2) 3.5-mm reconstruction plating, (3) bicortical, fully threaded 3.5-mm, and (4) 6.5-mm pubic ramus screws...
April 8, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28386059/the-demographic-response-of-a-deciduous-shrub-the-indigofera-bungeana-complex-fabaceae-to-the-pleistocene-climate-changes-in-east-asia
#9
Xue-Li Zhao, Xin-Fen Gao, Zhang-Ming Zhu, Yun-Dong Gao, Bo Xu
East Asia harbors the highest level of floristic diversity among the world's temperate regions. Despite the increase in phylogeographic studies of temperate plants in East Asia, far less attention has been paid to widely distributed deciduous shrubs that widespread across several floral regions. We sequenced two chloroplast DNA (cpDNA) fragments (ndhJ-trnF and trnD-trnT) and one nuclear DNA (Pgk1) of 472 individuals from 51 populations of such a group, the Indigofera bungeana complex. We used population genetic data as well as ecological niche modelling to examine the evolutionary history and glacial refugia during the Last Glacial Maximum (LGM) of this group...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28384461/implant-placement-is-more-accurate-using-dynamic-navigation
#10
Michael S Block, Robert W Emery, Daniel R Cullum, Ali Sheikh
PURPOSE: The purpose of this prospective study was to measure and compare the accuracy and precision of dynamic navigation with freehand (FH) implant fixture placement. The authors hypothesized that the evaluated dynamic navigation system would have high accuracy and precision and would be superior to FH methods. MATERIALS AND METHODS: The authors designed and implemented a prospective cohort study and enrolled patients who had implants placed from December 2014 through December 2016...
March 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28378307/user-preferences-and-water-use-savings-owing-to-washbasin-taps-retrofit-a-case-study-of-the-decivil-building-of-the-university-of-aveiro
#11
Inês Meireles, Vítor Sousa, Kemi Adeyeye, Armando Silva-Afonso
During the last decades, achieving water efficiency in buildings has increasingly become an important challenge in the scope of sustainability. Water consumption is directly related to individual conduct. Despite the various technological improvements in fixtures and appliances, their performance will be influenced by human preferences and behavior. As a result, the potential for effective water consumption saving is influenced by behavior change as well as water-efficient fixtures and appliances. This work evaluates the impact of user preferences and behavior change on the water-efficient performance of tap aerators in a case study building: the Department of Civil Engineering building of the University of Aveiro, Portugal...
April 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28368126/the-key-points-of-maintenance-therapy-for-dental-implants-a-literature-review
#12
Miha Pirc, Irina F Dragan
Dental implants require lifelong maintenance and care. Success is defined by biologic factors (presence of inflamed soft tissues surrounding dental implants and radiographic changes in the crestal bone levels) and mechanical factors (stability of the implant fixture and implant supported restoration, etc). Most implant failures are initiated by incipient stages of inflammatory processes, which lead to peri-mucositis and peri-implantitis. The evidence regarding the value of maintenance protocol regarding implants is sparse compared with the one for teeth...
April 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28362373/proximal-cadaveric-femur-preparation-for-fracture-strength-testing-and-quantitative-ct-based-finite-element-analysis
#13
Dan Dragomir-Daescu, Asghar Rezaei, Susheil Uthamaraj, Timothy Rossman, James T Bronk, Mark Bolander, Vincent Lambert, Sean McEligot, Rachel Entwistle, Hugo Giambini, Iwona Jasiuk, Michael J Yaszemski, Lichun Lu
Cadaveric fracture testing is routinely used to understand factors that affect proximal femur strength. Because ex vivo biological tissues are prone to lose their mechanical properties over time, specimen preparation for experimental testing must be performed carefully to obtain reliable results that represent in vivo conditions. For that reason, we designed a protocol and a set of fixtures to prepare the femoral specimens such that their mechanical properties experienced minimal changes. The femora were kept in a frozen state except during preparation steps and mechanical testing...
March 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28339779/effect-of-the-combination-of-white-and-red-led-lighting-during-incubation-on-layer-broiler-and-pekin-duck-hatchability
#14
G S Archer, D Jeffrey, Z Tucker
Previous research has shown that providing light during incubation can have positive effects on hatchability and chick quality; however, white light alone has been observed to improve these factors only in pigmented broiler eggs and non-pigmented white layer eggs. Monochromatic red light has been shown to improve hatchability in layer eggs. Therefore the objective of this study was to utilize one light fixture that emitted both white and monochromatic red light to determine if this one light source could improve hatchability in both types of chicken eggs and pigmented Pekin duck egg...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28333497/not-all-nonnormal-distributions-are-created-equal-improved-theoretical-and-measurement-precision
#15
Harry Joo, Herman Aguinis, Kyle J Bradley
We offer a four-category taxonomy of individual output distributions (i.e., distributions of cumulative results): (1) pure power law; (2) lognormal; (3) exponential tail (including exponential and power law with an exponential cutoff); and (4) symmetric or potentially symmetric (including normal, Poisson, and Weibull). The four categories are uniquely associated with mutually exclusive generative mechanisms: self-organized criticality, proportionate differentiation, incremental differentiation, and homogenization...
March 23, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28314889/reconstructing-the-anterolateral-ligament-does-not-decrease-rotational-knee-laxity-in-acl-reconstructed-knees
#16
Kasper Stentz-Olesen, Emil Toft Nielsen, Sepp de Raedt, Peter Bo Jørgensen, Ole Gade Sørensen, Bart Kaptein, Kjeld Søballe, Maiken Stilling
PURPOSE: Little is known about the anterolateral ligament's (ALL) influence on knee laxity. The purpose of this study was to investigate rotational knee laxity against a pure axial rotational stress using radiostereometric analysis (RSA) after cutting and reconstructing both the anterior cruciate ligament (ACL) and the ALL. METHODS: Eight human donor legs were positioned and stereoradiographically recorded at 0°, 30° and 60° of knee flexion using a motorised fixture, while an internally rotating force of 4 Nm was applied to the foot...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28314887/mechanical-strains-passing-through-the-acetabular-labrum-modify-its-shape-during-hip-motion-an-anatomical-study
#17
Matthieu Ollivier, Thomas Le Corroller, Sebastien Parratte, Patrick Chabrand, Jean-Noël Argenson, Olivier Gagey
PURPOSE: The function of the hip labrum during hip motion remains poorly known. Our hypothesis was that acetabular labrum will deform and change its shape during adduction to abduction movement consecutively to variation of strains passing from the acetabulum to the femoral head. An ex vivo anatomical study was conducted to analyse the morphological parameters variation of the mid-portion of the labrum (length, thickness, shape, deformation) as well as femoro-labral strains during hip adduction to abduction movement...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28294205/fracture-resistance-of-different-implant-abutments-supporting-%C3%A2-all-ceramic-single-crowns-after-aging
#18
Michael Stimmelmayr, Philipp Heiß, Kurt Erdelt, Josef Schweiger, Florian Beuer
OBJECTIVE: To test the mechanical properties of three different restorative materials for implant abutments supporting all-ceramic single crowns. MATERIALS AND METHODS: Thirty implants with butt-joint connections were distributed into three test groups: Group A with 10 one-piece zirconia abutments, Group U with 10 titanium abutments, and Group T with 10 titanium-zirconia hybrid abutments. Monolithic zirconia single crowns were cemented and artificially aged. The crowns were loaded at a 30-degree angle in a universal testing machine until fracture or bending...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28280731/early-bone-formation-around-immediately-loaded-transitional-implants-inserted-in-the-human-posterior-maxilla-the-effects-of-fixture-design-and-surface
#19
RANDOMIZED CONTROLLED TRIAL
Carlo Mangano, Jamil Awad Shibli, Jefferson Trabach Pires, Giuseppe Luongo, Adriano Piattelli, Giovanna Iezzi
Aim. To evaluate the effects of fixture design and surface on the early bone formation around immediately loaded implants inserted in the human posterior maxilla. Materials and Methods. Ten totally edentulous subjects received two transitional implants: one tapered implant with knife-edge threads/nanostructured calcium-incorporated surface (test: Anyridge®, Megagen, Gyeongbuk, South Korea) and one cylindrical implant with self-tapping threads/sandblasted surface (control: EZPlus®, Megagen). The implants were placed according to a split-mouth design and immediately loaded to support an interim complete denture; after 8 weeks, they were removed for histologic/histomorphometric analysis...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28276193/assessment-of-corrosion-in-retrieved-spine-implants
#20
V C Panagiotopoulou, H S Hothi, H A Anwar, S Molloy, H Noordeen, K Rezajooi, J Sutcliffe, J A Skinner, A J Hart
Recently the use of dissimilar metals in spine instrumentation has increased, especially in the case of adult deformities, where rods made from Cobalt Chrome alloys (CoCr) are used with Titanium (Ti) screws. The use of dissimilar metals increases the risk of galvanic corrosion and patients have required revision spine surgery due to severe metallosis that may have been caused by corrosion. We aimed to assess the presence of corrosion in spine implant retrievals from constructs with two types of material combinations: similar (Ti/Ti) and dissimilar (CoCr/Ti)...
March 9, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
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