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https://www.readbyqxmd.com/read/29229406/validation-of-single-plane-fluoroscopy-and-2d-3d-shape-matching-for-quantifying-shoulder-complex-kinematics
#1
Rebekah L Lawrence, Arin M Ellingson, Paula M Ludewig
Fluoroscopy and 2D/3D shape-matching has emerged as the standard for non-invasively quantifying kinematics. However, its accuracy has not been well established for the shoulder complex when using single-plane fluoroscopy. The purpose of this study was to determine the accuracy of single-plane fluoroscopy and 2D/3D shape-matching for quantifying full shoulder complex kinematics. Tantalum markers were implanted into the clavicle, humerus, and scapula of four cadaveric shoulders. Biplane radiographs were obtained with the shoulder in five humerothoracic elevation positions (arm at the side, 30°, 60°, 90°, maximum)...
December 8, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29229061/accuracy-of-a-radiological-evaluation-method-for-thoracic-and-lumbar-spinal-curvatures-using-spinous-processes
#2
Bárbara V Marchetti, Cláudia T Candotti, Eduardo G Raupp, Eduardo B C Oliveira, Tássia S Furlanetto, Jefferson F Loss
OBJECTIVE: The purpose of this study was to assess a radiographic method for spinal curvature evaluation in children, based on spinous processes, and identify its normality limits. METHODS: The sample consisted of 90 radiographic examinations of the spines of children in the sagittal plane. Thoracic and lumbar curvatures were evaluated using angular (apex angle [AA]) and linear (sagittal arrow [SA]) measurements based on the spinous processes. The same curvatures were also evaluated using the Cobb angle (CA) method, which is considered the gold standard...
November 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/29225636/evaluation-of-the-prevalence-of-complete-isthmii-in-permanent-teeth-using-cone-beam-computed-tomography
#3
Sina Haghanifar, Ehsan Moudi, Zahrasadat Madani, Foroozan Farahbod, Ali Bijani
Introduction: The current study aimed at determining the prevalence of complete isthmii in permanent teeth, using cone-beam computed tomography (CBCT) in a selected Iranian community. Methods and Materials: In this cross sectional study, 100 CBCT images (from 58 female and 42 male patients) including 1654 teeth (809 maxillary and 845 mandibular teeth) were evaluated. Each tooth root was evaluated in axial plane (interval, 0.1 mm; thickness, 0.1 mm) from the orifice to the apex and from the apex to the orifice to detect the presence of complete isthmus...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29209346/katanin-a-sword-cutting-microtubules-for-cellular-developmental-and-physiological-purposes
#4
REVIEW
Ivan Luptovčiak, George Komis, Tomáš Takáč, Miroslav Ovečka, Jozef Šamaj
KATANIN is a well-studied microtubule severing protein affecting microtubule organization and dynamic properties in higher plants. By regulating mitotic and cytokinetic and cortical microtubule arrays it is involved in the progression of cell division and cell division plane orientation. KATANIN is also involved in cell elongation and morphogenesis during plant growth. In this way KATANIN plays critical roles in diverse plant developmental processes including the development of pollen, embryo, seed, meristem, root, hypocotyl, cotyledon, leaf, shoot, and silique...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29207839/evaluation-of-effect-of-irrigants-with-or-without-surfactant-on-root-canal-transportation-by-cone-beam-computed-tomography-an-in-vitro-study
#5
Siddiq Ahmed, Prabu Mahin Syed Ismail, M Chandra Sekhar, Sampathi Naga Lakshmi Reddy, Moosani Gopi Krishna, Upendra Natha Reddy, Kalla Nikhita, P Sai Harish
Introduction: Maintenance of original canal anatomy with proper disinfection is our primary goal to achieve during root canal instrumentation. Surfactants are added to irrigating solution to promote deeper penetration into dentinal tubules. Aim: The aim of this study was to evaluate the influence of addition of surfactants to Sodium Hypochlorite (NaOCl) and Ethylenediaminetetraacetic Acid (EDTA) on transportation of root canal. Materials and Methods: Fifty human mandibular molars with mesial root curvatures of 10° - 40° were selected and embedded in silicone impression material to simulate mandibular arch form to facilitate imaging process and maintain reproducibility of images...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29201534/a-riemannian-framework-for-linear-and-quadratic-discriminant-analysis-on-the-tangent-space-of-shapes
#6
Susovan Pal, Roger P Woods, Suchit Panjiyar, Elizabeth Sowell, Katherine L Narr, Shantanu H Joshi
We present a Riemannian framework for linear and quadratic discriminant classification on the tangent plane of the shape space of curves. The shape space is infinite dimensional and is constructed out of square root velocity functions of curves. We introduce the notion of mean and covariance of shape-valued random variables and samples from a tangent space to the pre-shapes (invariant to translation and scaling) and then extend it to the full shape space (rotational invariance). The shape observations from the population are approximated by coefficients of a Fourier basis of the tangent space...
2017: Conference on Computer Vision and Pattern Recognition Workshops
https://www.readbyqxmd.com/read/29197564/impact-breakage-of-pharmaceutical-tablets
#7
C Hare, T Bonakdar, M Ghadiri, J Strong
Tablets are the most common solid dosage form of pharmaceutical active ingredients due to their ease of use. Their dissolution behaviour depends on the particle size distribution and physicochemical properties of the formulation, and the compression process, which need to be optimised for producing consistently robust tablets, as weaker tablets are often prone to breakage during production, transport and end use. Tablet strength is typically determined by diametric compression and friability tests. The former gives rise to propagation of a crack on a plane along the compression axis, whilst the latter, carried out in a rotating drum, incurs surface damage and produces chips and debris...
November 29, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29196959/right-colic-artery-anatomy-a-systematic-review-of-cadaveric-studies
#8
REVIEW
M Haywood, C Molyneux, V Mahadevan, N Srinivasaiah
BACKGROUND: Complete mesocolic excision for right-sided colon cancer may offer an oncologically superior excision compared to traditional right hemicolectomy through high vascular tie and adherence to embryonic planes during dissection, supported by preoperative scanning to accurately define the tumour lymphovascular supply and drainage. The authors support and recommend precision oncosurgery based on these principles, with an emphasis on the importance of understanding the vascular anatomy...
December 2, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/29195817/radial-plane-tooth-position-and-bone-wall-dimensions-in-the-anterior-maxilla-a-cbct-classification-for-immediate-implant-placement
#9
Howard Gluckman, Carla Cruvinel Pontes, Jonathan Du Toit
STATEMENT OF PROBLEM: The biological and esthetic challenge of the post-extraction ridge is relevant to restorative implant dentistry, most significantly in the anterior esthetic zone. Previous authors have discussed facial bone wall dimensions and classified their variations. A reclassification may be pertinent. PURPOSE: The purpose of this observational, clinical study was to introduce a new classification system for anterior maxilla tooth position with guidelines for immediate implant placement...
November 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29193304/microbial-colonization-of-the-periodontal-pocket-and-its-significance-for-periodontal-therapy
#10
REVIEW
Andrea Mombelli
The aim of this paper was to evaluate strategies for periodontal therapy from the perspective of periodontal disease being a consequence of microbial colonization of the periodontal pocket environment. In classic bacterial infections the diversity of the microbiota decreases as the disease develops. In most cases of periodontitis, however, the diversity of the flora increases. Most incriminating bacteria are thought to harm tissues significantly only if present in high numbers over prolonged periods of time...
November 30, 2017: Periodontology 2000
https://www.readbyqxmd.com/read/29191286/the-validity-and-reproducibility-of-the-flexicurve-in-the-evaluation-of-cervical-spine-lordosis
#11
Eduardo G Raupp, Cláudia T Candotti, Bárbara V Marchetti, Adriane Vieira, Fernanda S Medeiros, Jefferson F Loss
OBJECTIVE: The purpose of this study was to measure the validity and reliability of flexicurve measurements of cervical curvature in the sagittal plane in adults. METHODS: One hundred thirteen adults were assessed in the seated position with flexicurve radiographs. Two groups were measured: (1) the validity group (n = 55), and (2) the reliability group (n = 58). Both groups were subdivided into 3 subgroups according to body mass index: underweight, normal weight, and overweight...
September 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/29186805/is-antimicrobial-photodynamic-therapy-effective-as-an-adjunct-to-scaling-and-root-planing-in-patients-with-chronic-periodontitis-a-systematic-review
#12
REVIEW
(no author information available yet)
The aim of this systematic review was to investigate whether antimicrobial photodynamic therapy (aPDT) as either a primary mode of treatment or an adjunct to non-surgical treatment was more effective than scaling and root planing (SRP) alone in treating chronic periodontitis in terms of clinical attachment level (CAL) gain and probing depth (PD) reduction. The focused question was developed using the Patient, Intervention, Comparison, and Outcome (PICO) format, and two authors independently searched the Medline, EMBASE, Cochrane Library, Web of Science, Google Scholar, and Scopus databases for relevant studies from January 2008 to December 2016...
November 24, 2017: Biomolecules
https://www.readbyqxmd.com/read/29183974/spin-susceptibility-of-charge-ordered-yba2cu3o-y-across-the-upper-critical-field
#13
Rui Zhou, Michihiro Hirata, Tao Wu, Igor Vinograd, Hadrien Mayaffre, Steffen Krämer, Arneil P Reyes, Philip L Kuhns, Ruixing Liang, W N Hardy, D A Bonn, Marc-Henri Julien
The value of the upper critical field Hc2, a fundamental characteristic of the superconducting state, has been subject to strong controversy in high-Tc copper oxides. Since the issue has been tackled almost exclusively by macroscopic techniques so far, there is a clear need for local-probe measurements. Here, we use 17O NMR to measure the spin susceptibility [Formula: see text] of the CuO2 planes at low temperature in charge-ordered YBa2Cu3O y We find that [Formula: see text] increases (most likely linearly) with magnetic field H and saturates above field values ranging from 20 T to 40 T...
November 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29177556/comparison-of-the-effect-of-root-surface-modification-with-citric-acid-edta-and-apdt-on-adhesion-and-proliferation-of-human-gingival-fibroblasts-and-osteoblasts-an-in-vitro-study
#14
Rafael Ferreira, Renato Taddei de Toledo Barros, Paula Stephania Brandão Hage Karam, Adriana Campos Passanezi Sant'Ana, Sebastião Luiz Aguiar Greghi, Maria Lucia Rubo de Rezende, Mariana Schutzer Ragghianti Zangrando, Rodrigo Cardoso de Oliveira, Carla Andreotti Damante
Root demineralization is used in Periodontics as an adjuvant for mechanical treatment. The aim of this study was to evaluate the effects of root surface modification with mechanic, chemical, and photodynamic treatments on adhesion and proliferation of human gingival fibroblasts and osteoblasts. Root fragments were treated by scaling and root planing (C-control group), EDTA (pH 7), citric acid plus tetracycline (CA-pH 1), and antimicrobial photodynamic therapy (aPDT) with toluidine blue O and red laser (pH 4)...
November 25, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29177555/efficacy-of-photodynamic-therapy-as-adjunct-treatment-of-chronic-periodontitis-a-systematic-review-and-meta-analysis
#15
REVIEW
Adriano Azaripour, Sebastian Dittrich, Cornelis J F Van Noorden, Brita Willershausen
Meta-analysis of treatment effects of antimicrobial photodynamic therapy (aPDT) adjunct to non-surgical scaling and root planing (SRP) in comparison to SRP alone on patients with chronic periodontitis. The meta-analysis was performed according to PRISMA statement and Cochrane Collaboration guidelines. Electronic search complemented by hand search assured a high yield of randomized controlled trials (RCTs) of aPDT as adjunct modality to SRP. Differences in probing depth (PD) and clinical attachment level (CAL) were calculated with 95% confidence intervals and pooled in a random effects model...
November 25, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29175465/effect-of-photodynamic-and-laser-therapy-in-the-treatment-of-peri-implant-mucositis-a-systematic-review
#16
REVIEW
Abdulaziz M Albaker, Aws S ArRejaie, Mohammed Alrabiah, Tariq Abduljabbar
BACKGROUND: The present study systematically reviewed the literature to investigate the effect of photodynamic therapy (PDT) or laser therapy (LT) in the management of peri-implant mucositis (p-iM). METHODS: The electronic databases were searched until October 2017. Outcome measures were bleeding on probing (BOP), plaque index (PI), or probing depth (PD). The addressed PICO question was: "Is PDT and LT effective in the management of p-iM?" RESULTS: A total of five studies included in the qualitative analysis, two of which had a low risk of bias...
November 22, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29174174/significant-association-of-rheumatoid-arthritis-related-inflammatory-markers-with%C3%A2-non-surgical-periodontal-therapy
#17
Ning-Ya Yang, Chen-Ying Wang, I-Tsu Chyuan, King-Jean Wu, Yu-Kang Tu, Ching-Wen Chang, Ping-Ning Hsu, Mark Yen-Ping Kuo, Yi-Wen Chen
BACKGROUND/PURPOSE: Chronic periodontitis (CP) and rheumatoid arthritis (RA) are the most common chronic inflammatory diseases and their immunopathogenesis is similar. The aim of this study was to evaluate the effect of non-surgical periodontal treatment on the serum levels of RA-related inflammatory markers in patients with chronic periodontitis. METHODS: Thirty-one Taiwanese adults with CP were included. Demographics and periodontal parameters, including probing depth, clinical attachment level, and number of remaining teeth in the oral cavity, were recorded...
November 22, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29173860/differences-in-distances-between-maxillary-posterior-root-apices-and-the-sinus-floor-according-to-skeletal-pattern
#18
Nguyen-Lan Ahn, Hyo-Sang Park
INTRODUCTION: The aim of this study was to evaluate the distances from the maxillary posterior root apices to the inferior wall of the maxillary sinus using cone-beam computed tomography images and the relationships between roots and maxillary sinus according to age, sex, and skeletal pattern. METHODS: Three-dimensional images of each root were checked, and the distances were measured along the true vertical axis from the apex of the root to the sinus floor in 118 patients (63 male, 55 female) aged 10 to 28 years...
December 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29146775/synthetic-tangled1-auxin-induced-in-roots9-mutant-phenotype-used-to-assess-tangled1-function
#19
Ricardo Mir, Victoria H Morris, Henrik Buschmann, Carolyn Rasmussen
TANGLED1 (TAN1) and AUXIN-INDUCED-IN-ROOTS 9 (AIR9) are microtubule binding proteins with cortical division site localization in plants. Their function in Arabidopsis thaliana remained unclear because neither tan1 nor air9 single mutants have a strong phenotype. We show that tan1 air9 double mutants have a synergistic phenotype consisting of short, twisted roots that are hypersenstive to a microtubule depolymerizing drug. The tan1 air9 double mutants have significant defects in division plane orientation due to failures in placing the new cell wall at the correct division site...
November 16, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29145877/trajectory-of-instantaneous-axis-of-rotation-in-fixed-lumbar-spine-with-instrumentation
#20
Masataka Inoue, Tetsutaro Mizuno, Toshihiko Sakakibara, Takaya Kato, Takamasa Yoshikawa, Tadashi Inaba, Yuichi Kasai
BACKGROUND: Several studies showed instantaneous axis of rotation (IAR) in the intact spine. However, there has been no report on the trajectory of the IAR of a damaged spine or that of a fixed spine with instrumentation. It is the aim of this study to investigate the trajectory of the IAR of the lumbar spine using the vertebra of deer. METHODS: Functional spinal units (L5-6) from five deer were evaluated with six-axis material testing machine. As specimen models, we prepared a normal model, a damaged model, and a pedicle screw (PS) model...
November 16, 2017: Journal of Orthopaedic Surgery and Research
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