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Margin fit

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https://www.readbyqxmd.com/read/29150135/effect-of-different-resin-luting-cements-on-the-marginal-fit-of-lithium-disilicate-pressed-crowns
#1
Radek Mounajjed, Thomas J Salinas, Tomas Ingr, Basel Azar
STATEMENT OF PROBLEM: The vertical marginal discrepancy of restorations can increase upon cementation, and poor marginal fit can lead to cement dissolution, marginal discoloration, microleakage, and secondary caries. The amount of increase is related to the type of luting cement used, but how lithium disilicate pressed crowns are affected by different resin cements is unclear. PURPOSE: The purpose of this in vitro study was to compare the effect of using different resin luting cements on the vertical marginal discrepancy of lithium disilicate pressed crowns...
November 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29145526/factors-affecting-the-decision-to-use-cemented-or-screw-retained-fixed-implant-supported-prostheses-a-critical-review
#2
Miguel Gómez-Polo, Rocio Ortega, Cristina Gómez-Polo, Alicia Celemin, Jaime Del Rio Highsmith
PURPOSE: This review aimed to compile and enumerate all the factors described in the literature that may affect the decision to use either cemented or screw-retained restorations and to determine the relative weights of each factor by type of retention and prosthesis. MATERIALS AND METHODS: The literature was reviewed, and the factors were classified as either determining (present in a clinical situation in which one of the retention mechanisms was clearly more suitable than the other) or conditioning (present in clinical situations in which one type of restoration was not clearly more advantageous than the other)...
November 16, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29144099/primary-cutaneous-b-cell-lymphoma-narrative-review-of-the-literature
#3
Vieri Grandi, Silvia Alberti Violetti, Roberta LA Selva, Stefano Cicchelli, Chiara Delfino, Paolo Fava, Maria T Fierro, Alessandro Pileri, Nicola Pimpinelli, Pietro Quaglino, Emilio Berti
Primary Cutaneous B-cell Lymphomas comprehend a group of lymphoproliferative disorders characterized by being monoclonal proliferations of B-cell primarily involving the skin. Despite being recognized as autonomous and distinct clinico-pathologic entities since the late 80s, their classification is still an ongoing matter of debate. At the moment, WHO classification recognizes three disorders: primary cutaneous marginal zone lymphoma, primary cutaneous follicle center lymphoma and primary cutaneous diffuse large B-cell lymphoma, leg type...
November 16, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/29143397/marginal-fit-comparison-of-cad-cam-crowns-milled-from-two-different-materials
#4
Atousa Azarbal, Mohsen Azarbal, Robert L Engelmeier, Thomas C Kunkel
PURPOSE: To evaluate the marginal fit of CAD/CAM copings milled from hybrid ceramic (Vita Enamic) blocks and lithium disilicate (IPS e.max CAD) blocks, and to evaluate the effect of crystallization firing on the marginal fit of lithium disilicate copings. MATERIALS AND METHODS: A standardized metal die with a 1-mm-wide shoulder finish line was imaged using the CEREC AC Bluecam. The coping was designed using CEREC 3 software. The design was used to fabricate 15 lithium disilicate and 15 hybrid ceramic copings...
November 16, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29142643/verification-of-a-computer-aided-replica-technique-for-evaluating-prosthesis-adaptation-using-statistical-agreement-analysis
#5
Hang-Nga Mai, Kyeong Eun Lee, Kyu-Bok Lee, Seung-Mi Jeong, Seok-Jae Lee, Cheong-Hee Lee, Seo-Young An, Du-Hyeong Lee
PURPOSE: The purpose of this study was to evaluate the reliability of computer-aided replica technique (CART) by calculating its agreement with the replica technique (RT), using statistical agreement analysis. MATERIALS AND METHODS: A prepared metal die and a metal crown were fabricated. The gap between the restoration and abutment was replicated using silicone indicator paste (n = 25). Gap measurements differed in the control (RT) and experimental (CART) groups...
October 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29138601/zinc-phosphate-as-a-definitive-cement-for-implant-supported-crowns-and-fixed-dentures
#6
Dennis Flanagan
Implant-supported dental prostheses can be retained by a screw or cement. Implant-supported fixed partial dentures have a passive fit. A passive fit means there is an internal gap between the abutment surface and the intaglio of the retainer to insure that there is no lateral pressure on the supporting implants or friction upon seating of the prosthesis. This gap is filled with cement for retention of the prosthesis. Any lateral pressure may cause marginal bone loss or periimplantitis. Also, there is usually a microscopic gap at the margin of a crown retainer that exposes the cement to oral fluids...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/29134506/the-risk-of-eating-disorders-and-bone-health-in-young-adults-the-mediating-role-of-body-composition-and-fitness
#7
Miriam Garrido-Miguel, Ana Torres-Costoso, María Martínez-Andrés, Blanca Notario-Pacheco, Ana Díez-Fernández, Celia Álvarez-Bueno, Jorge Cañete García-Prieto, Vicente Martínez-Vizcaíno
PURPOSE: To analyze the independent relationship between the risk of eating disorders and bone health and to examine whether this relationship is mediated by body composition and cardiorespiratory fitness (CRF). METHODS: In this cross-sectional study, bone-related variables, lean mass, fat mass (by DXA), risk of eating disorders (SCOFF questionnaire), height, weight, waist circumference and CRF were measured in 487 university students aged 18-30 years from the University of Castilla-La Mancha, Spain...
November 13, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/29129089/systemic-therapy-for-esophageal-cancer-chemotherapy
#8
Geoffrey Y Ku
As one-half of patients with esophagogastric cancer (EGC) present with metastatic disease and the majority of patients with locally advanced disease will eventually develop metastatic disease despite multimodality therapy, most patients will receive palliative chemotherapy at some point. The reference first-line regimen consists of a fluoropyrimidine/platinum combination, which is the standard in East Asia, where this disease is endemic. Options include infusional 5-fluorouracil (5-FU), capecitabine, S-1 and other oral 5-FU pro-drugs and cisplatin or oxaliplatin...
October 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/29128219/predicting-milk-protein-responses-and-the-requirement-of-metabolizable-protein-by-lactating-dairy-cows
#9
L E Moraes, E Kebreab, J L Firkins, R R White, R Martineau, H Lapierre
The objective of this study was to develop a modeling framework to predict milk protein yield responses to varying metabolizable protein (MP) supplies and to determine the requirement of MP by lactating dairy cows. The logistic curve was used to model milk protein yield while accounting for a variable efficiency of MP utilization and between-study variability. Models were developed with databases from 2 recently published meta-analyses and based on either total MP supply or MP supply available for milk production...
November 8, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29127231/evaluation-of-psychometric-properties-of-the-german-hospital-survey-on-patient-safety-culture-and-its-potential-for-cross-cultural-comparisons-a-cross-sectional-study
#10
Nikoloz Gambashidze, Antje Hammer, Mareen Brösterhaus, Tanja Manser
OBJECTIVE: To study the psychometric characteristics of German version of the Hospital Survey on Patient Safety Culture and to compare its dimensionality to other language versions in order to understand the instrument's potential for cross-national studies. DESIGN: Cross-sectional multicentre study to establish psychometric properties of German version of the survey instrument. SETTING: 73 units from 37 departments of two German university hospitals...
November 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/29108488/validation-of-three-scoring-risk-stratification-models-for-thyroid-nodules
#11
Su Min Ha, Hye Shin Ahn, Jung Hwan Baek, Hwa Young Ahn, Yun Jae Chung, Bo Youn Cho, Sung Bin Park
BACKGROUND: To minimize potential harm from overuse of fine-needle aspiration, Thyroid Imaging Reporting and Data Systems (TIRADSs) were developed for thyroid nodule risk stratification. The purpose of this study was to perform validation of three scoring risk stratification models for thyroid nodules using ultrasonography features, a web-based malignancy risk stratification system at website (http://www.gap.pe.kr/thyroidnodule.php) and those developed by the Korean Society of Thyroid Radiology (KSThR) and the American College of Radiology (ACR)...
November 6, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29108125/robust-fit-of-bayesian-mixed-effects-regression-models-with-application-to-colony-forming-unit-count-in-tuberculosis-research
#12
Divan Aristo Burger, Robert Schall
Early bactericidal activity of tuberculosis drugs is conventionally assessed using statistical regression modeling of colony forming unit (CFU) counts over time. Typically, most CFU counts deviate little from the regression curve, but gross outliers due to erroneous sputum sampling are occasionally present and can markedly influence estimates of the rate of change in CFU count, which is the parameter of interest. A recently introduced Bayesian nonlinear mixed effects regression model was adapted to offer a robust approach that accommodates both outliers and potential skewness in the data...
November 6, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/29103378/estimating-local-costs-associated-with-clostridium-difficile-infection-using-machine-learning-and-electronic-medical-records
#13
Theodore R Pak, Kieran I Chacko, Timothy O'Donnell, Shirish S Huprikar, Harm van Bakel, Andrew Kasarskis, Erick R Scott
BACKGROUND Reported per-patient costs of Clostridium difficile infection (CDI) vary by 2 orders of magnitude among different hospitals, implying that infection control officers need precise, local analyses to guide rational decision making between interventions. OBJECTIVE We sought to comprehensively estimate changes in length of stay (LOS) attributable to CDI at a single urban tertiary-care facility using only data automatically extractable from the electronic medical record (EMR). METHODS We performed a retrospective cohort study of 171,938 visits spanning a 7-year period...
November 6, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29101562/academic-status-does-not-affect-outcome-following-complex-hepato-pancreato-biliary-procedures
#14
Maria S Altieri, Jie Yang, Donald Groves, Donglei Yin, Kristen Cagino, Mark Talamini, Aurora Pryor
INTRODUCTION: There is a growing debate regarding outcomes following complex hepato-pancreato-biliary (HPB) procedures. The purpose of our study is to examine if facility type has any impact on complications, readmission rates, emergency department (ED) visit rates, and length of stay (LOS) for patients undergoing HPB surgery. METHODS: The SPARCS administrative database was used to identify patients undergoing complex HPB procedures between 2012 and 2014 in New York...
November 3, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29096642/positive-surgical-margin-following-radical-nephrectomy-is-an-independent-predictor-of-local-recurrence-and-disease-specific-survival
#15
Yasmin Abu-Ghanem, Jacob Ramon, Raanan Berger, Issac Kaver, Edi Fridman, Raya Leibowitz-Amit, Zohar A Dotan
BACKGROUND: Positive surgical margins (PSM) are recognized as an adverse prognostic sign and are often associated with higher rates of local and systemic disease recurrence. The data regarding the oncological outcome for PSM following radical nephrectomy (RN) is limited. We examined the predictive factors for PSM and its influence on survival and site of recurrence in patients treated with RN for renal cell carcinoma (RCC). METHODS: Clinical, pathologic and follow-up data on 714 patients undergoing RN for kidney cancer were analyzed...
November 2, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29093220/parasite-infection-induces-size-dependent-host-dispersal-consequences-for-parasite-persistence
#16
Akira Terui, Keita Ooue, Hirokazu Urabe, Futoshi Nakamura
Host dispersal is now recognized as a key predictor of the landscape-level persistence and expansion of parasites. However, current theories treat post-infection dispersal propensities as a fixed trait, and the plastic nature of host's responses to parasite infection has long been underappreciated. Here, we present a mark-recapture experiment in a single host-parasite system (larval parasites of the freshwater mussel Margaritifera laevis and its salmonid fish host Oncorhynchus masou masou) and provide, to our knowledge, the first empirical evidence that parasite infection induces size-dependent host dispersal in the field...
November 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29091786/using-the-transformative-paradigm-to-conduct-a-mixed-methods-needs-assessment-of-a-marginalized-community-methodological-lessons-and-implications
#17
Karen Moran Jackson, Suzy Pukys, Andrene Castro, Lorna Hermosura, Joanna Mendez, Shetal Vohra-Gupta, Yolanda Padilla, Gabriela Morales
We explore opportunities as well as challenges associated with conducting a mixed methods needs assessment using a transformative paradigm. The transformative paradigm is a research framework that centers the experiences of marginalized communities, includes analysis of power differentials that have led to marginalization, and links research findings to actions intended to mitigate disparities. We argue that a community needs assessment is a natural fit for the use of a transformative framework, serving as an entry-point for the development of responsive programmatic and funding decisions...
October 3, 2017: Evaluation and Program Planning
https://www.readbyqxmd.com/read/29082776/hiv-sero-disclosure-among-men-who-have-sex-with-men-and-transgender-women-on-hiv-pre-exposure-prophylaxis
#18
J Carlo Hojilla, Megha Mehrotra, Hong-Ha M Truong, David V Glidden, K Rivet Amico, Vanessa McMahan, David Vlahov, Suwat Chariyalertsak, Juan Vicente Guanira, Robert M Grant
HIV pre-exposure prophyalxis (PrEP) might lead individuals to view serodisclosure as unnecessary. We examined the prevalence of non-disclosure and lack of knowledge of partner status in a global cohort of men who have sex with men (MSM) and transgender women (TW) enrolled in the iPrEx Open Label Extension (OLE). We calculated prevalence ratios by fitting a logistic model and estimating predicted probabilities using marginal standardization. Prevalence of non-disclosure and lack of knowledge of partner status were highest in Thailand (73% and 74%, respectively) and lowest in the USA (23% and 37%, respectively)...
October 28, 2017: AIDS Care
https://www.readbyqxmd.com/read/29081881/less-than-expected-how-media-cover-demonstration-turnout
#19
Ruud Wouters, Kirsten Van Camp
Demonstration turnout is a crucial political resource for social movements. In this article, we investigate how mass media cover demonstration size. We develop a typology of turnout coverage and scrutinize the factors that drive turnout coverage. In addition, we test whether media coverage underestimates, reflects, or exaggerates "guesstimates" by organizers and police forces. Together, these analyses shed light on whether turnout coverage fits a logic of normalization or marginalization. We rely on a unique dataset of 428 demonstrations organized in Brussels (2003-2010)...
October 2017: International Journal of Press/politics
https://www.readbyqxmd.com/read/29077775/internal-fit-and-marginal-gap-evaluation-of-zirconia-copings-using-microcomputed-tomography-an-in-vitro-analysis
#20
Aws ArRejaie, Haidar Alalawi, Fahad A Al-Harbi, Reem Abualsaud, Ahmad M Al-Thobity
The purpose of this in vitro study was to measure the marginal and internal fit of single-unit all-ceramic zirconia copings (ZCs) fabricated through three different computer-aided design/computer-assisted manufacture (CAD/CAM) systems using microcomputed tomography (microCT). A total of 10 ZCs were produced for each experimental group. Scanning of the stainless steel (SS) model with its respective copings was conducted with a SkyScan machine. DataViewer software was used to acquire cross-sectional images. Locations of cross-sections for all specimens were standardized to reduce errors...
October 27, 2017: International Journal of Periodontics & Restorative Dentistry
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