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https://www.readbyqxmd.com/read/28819356/comparison-of-efficacy-of-self-expandable-metallic-stent-placement-in-the-unresectable-esophageal-cancer-patients
#1
Masaya Uesato, Yasunori Akutsu, Kentarou Murakami, Yorihiko Muto, Akiko Kagaya, Akira Nakano, Mizuho Aikawa, Tomohide Tamachi, Takahiro Arasawa, Hiroyuki Amagai, Yasuhide Muto, Hisahiro Matsubara
This is a retrospective study to evaluate the prevention of complications of metallic stent placement in patients with unresectable advanced esophageal cancer. A total of 87 patients were treated with 4 types of metal stents in the esophagus over a period of 18 years. Stent placement was technically successful. The most common prior treatment was chemoradiotherapy. There were no significant differences in the rate of patients with no complications among the prior treatments. Approximately, 30% of patients had the most common chest pain in complications...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28818003/hybrid-a-cnh-tio2-tin-type-surface-layers-produced-on-niti-shape-memory-alloy-for-cardiovascular-applications
#2
Justyna Witkowska, Agnieszka Sowińska, Elżbieta Czarnowska, Tomasz Płociński, Janusz Kamiński, Tadeusz Wierzchoń
AIM: The goal was to improve the properties of NiTi shape memory alloy to make it suitable for cardiac applications. For this purpose, a hybrid a-CNH+TiO2+TiN-type surface layer was produced on NiTi alloy and characterized. MATERIALS & METHODS: The NiTi alloy subjected to hybrid process combining low-temperature oxynitriding under glow discharge conditions and radio frequency chemical vapor deposition process was examined for microstructure, surface topography, corrosion resistance, wettability and surface-free energy, Ni ion release and platelets adhesion, aggregation and activation...
August 18, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28816195/pentraxin-3-levels-in-gingival-crevicular-fluid-during-canine-retraction-with-nickel-titanium-coil-spring-and-active-tieback
#3
Rakesh Thukral, Sukhpreet Mangat, Anvesha Ganguly, Sanket S Agarkar, Harleen Bali, Shekhar Grover
AIM: Orthodontic treatment is routinely carried out in patients with the purpose of correcting various forms of dental malocclusions. Retraction of the canines can be achieved either individually or along with incisor. Pentraxin-3 (PTX-3) is regarded as the true independent indicator of disease activity. Hence, we undertook the present study to assess and compare the level of PTX-3 in patients undergoing canine retraction with active tieback and Nickel-Titanium (NiTi) coil spring. MATERIALS AND METHODS: The present study included assessment of 25 patients that underwent canine retraction as a part of fixed orthodontic treatment...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28816185/an-in-vitro-evaluation-of-friction-characteristics-of-conventional-stainless-steel-and-self-ligating-stainless-steel-brackets-with-different-dimensions-of-archwires-in-various-bracket-archwire-combination
#4
K Sridharan, Shailesh Sandbhor, U B Rajasekaran, George Sam, M Mohamed Ramees, Esther A Abraham
AIM: The purpose of this research is to compare the frictional attributes of stainless steel conventional brackets and self-ligating stainless steel brackets with different dimensions of archwires. MATERIALS AND METHODS: The test was carried with two sets of maxillary brackets: (1) Conventional stainless steel (Victory Series), (2) stainless steel self-ligating (SmartClip) without first premolar brackets. Stainless steel, nickel-titanium (NiTi), and beta-Ti which are the types of orthodontic wire alloys were tested in this study...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28816182/a-survey-of-endodontic-practices-among-dentists-in-burkina-faso
#5
Wendpoulomdé Ad Kaboré, Valérie Chevalier, Yolande Gnagne-Koffi, Carole Dw Ouédraogo, Diouma Ndiaye, Babacar Faye
AIM: Dental surgeons must be aware of the most appropriate endodontic treatments and how to properly conduct them. The aim of this study was to evaluate the knowledge of dental surgeons in Burkina Faso in terms of endodontic treatment procedures. MATERIALS AND METHODS: This descriptive, cross-sectional study was performed during the regular annual conference of the National Board of Dental Surgeons of Burkina Faso, held on February 27 and 28, 2015 in Ouagadougou, through a questionnaire...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28808639/comparison-of-cyclic-fatigue-life-of-nickel-titanium-files-an-examination-using-high-speed-camera
#6
Taha Özyürek, Neslihan Büşra Keskin, Fatma Furuncuoğlu, Uğur İnan
OBJECTIVES: To determine the actual revolutions per minute (rpm) values and compare the cyclic fatigue life of Reciproc (RPC, VDW GmbH), WaveOne (WO, Dentsply Maillefer), and TF Adaptive (TFA, Axis/SybronEndo) nickel-titanium (NiTi) file systems using high-speed camera. MATERIALS AND METHODS: Twenty RPC R25 (25/0.08), 20 WO Primary (25/0.08), and 20 TFA ML 1 (25/0.08) files were employed in the present study. The cyclic fatigue tests were performed using a dynamic cyclic fatigue testing device, which has an artificial stainless steel canal with a 60° angle of curvature and a 5-mm radius of curvature...
August 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28808638/effect-of-surface-treatment-on-the-mechanical-properties-of-nickel-titanium-files-with-a-similar-cross-section
#7
Sang Won Kwak, Joo Yeong Lee, Hye-Jin Goo, Hyeon-Cheol Kim
OBJECTIVES: The aim of this study was to compare the mechanical properties of various nickel-titanium (NiTi) files with similar tapers and cross-sectional areas depending on whether they were surface-treated. MATERIALS AND METHODS: Three NiTi file systems with a similar convex triangular cross-section and the same ISO #25 tip size were selected for this study: G6 (G6), ProTaper Universal (PTU), and Dia-PT (DPT). To test torsional resistance, 5 mm of the straightened file's tip was fixed between polycarbonate blocks (n = 15/group) and continuous clockwise rotation until fracture was conducted using a customized device...
August 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28808464/success-rate-and-time-for-bypassing-the-fractured-segments-of-four-niti-rotary-instruments
#8
Alireza Adl, Arash Shahravan, Melika Farshad, Shahab Honar
INTRODUCTION: The aim of this in vitro study was to compare the success rate and time required for bypassing the fractured segments of four different nickel-titanium (NiTi) rotary systems. METHODS AND MATERIALS: This study was conducted on the mesiobuccal canals of 60 mandibular molars with fully-formed apices. Fifteen Flex Master, K3, RaCe and Hero Shaper instruments with 0.04 taper and tip size of #30 and 25 mm in length, were obtained. These instruments were notched at a point 3 mm from the tip of the instrument and were driven into the canals using a handpiece until the instruments fractured and became lodged therein...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808456/an-in-vitro-comparison-of-apically-extruded-debris-using-reciproc-protaper-universal-neolix-and-hyflex-in-curved-canals
#9
Hossein Labbaf, Kiumars Nazari Moghadam, Shahriar Shahab, Mahshid Mohammadi Bassir, Mohammad Amin Fahimi
INTRODUCTION: As a consequence of root canal preparation, dentinal chips, irrigants and pulp remnants are extruded into preradicular space. This phenomenon may lead to post endodontic flare-ups. The purpose of this study was to compare the amount of extruded debris with four endodontic NiTi engine-driven systems. METHODS AND MATERIALS: Sixty mesiobuccal roots of maxillary molars with 15-30˚ curvature were divided randomly into four groups (n=15). Each group was instrumented up to apical size of 25 using Reciproc, ProTaper Universal, Neolix and Hyflex...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28803804/effect-of-esthetic-coating-on-surface-roughness-of-orthodontic-archwires
#10
Seyed Mohammad Mousavi, Milad Shamohammadi, Zahra Rastegaar, Masoumeh Skini, Vahid Rakhshan
BACKGROUND AND AIM: Esthetic wires are commonly used in orthodontic treatments. Surface roughness is an important factor in the friction and bacterial adhesion in these wires. Surface roughness of esthetic wires has not been assessed, except in a few recent (mostly qualitative esthetics) studies. The aim of this study was to quantitatively compare the surface roughness of 4 coated esthetic wires with that of a conventional orthodontic wire. MATERIALS AND METHODS: In this in vitro trial, 25 coated and uncoated orthodontic archwires were studied, including: NiTi Memory wire (American Orthodontics, USA) as a control group; Orthocosmetic Elastinol (Ortho Organizers, USA); Perfect (Hubit, Korea); Imagination (Gestenco, Sweden); EverWhite (American Orthodontics, USA)...
August 10, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28802784/a-hybrid-straightwire-technique
#11
Daniel Celli, Lorenza Catalfamo, Enrico Gasperoni, Roberto Deli
An original straightwire appliance was developed in order to easily adapt force and friction to the different stages and needs of treatment. The appliance features: (1) conventional brackets with a 0.020×0.030″ slot in the anterior area, passive self-ligating brackets with a 0.022×0.030″ slot in the lateral area, and tubes with a 0.022×0.030″ slot in the molar area; (2) archwires which adapt to the different stages of treatment and increase their section and stiffness progressively, starting with 0...
August 9, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28772412/biocompatibility-and-inflammatory-potential-of-titanium-alloys-cultivated-with-human-osteoblasts-fibroblasts-and-macrophages
#12
Jana Markhoff, Martin Krogull, Christian Schulze, Christian Rotsch, Sandra Hunger, Rainer Bader
The biomaterials used to maintain or replace functions in the human body consist mainly of metals, ceramics or polymers. In orthopedic surgery, metallic materials, especially titanium and its alloys, are the most common, due to their excellent mechanical properties, corrosion resistance, and biocompatibility. Aside from the established Ti6Al4V alloy, shape memory materials such as nickel-titanium (NiTi) have risen in importance, but are also discussed because of the adverse effects of nickel ions. These might be reduced by specific surface modifications...
January 10, 2017: Materials
https://www.readbyqxmd.com/read/28765250/validating-rheumatoid-arthritis-remission-using-the-patients-perspective-results-from-a-special-interest-group-at-omeract-2016
#13
Linda A Rasch, Maarten Boers, Catherine L Hill, Marieke Voshaar, Wijnanda Hoogland, Maarten de Wit, Caroline Flurey, Bev Davis, Merete Lund Hetland, Cecilie Heegaard Brahe, Laure Gossec, George A Wells, Peter Tugwell, Bindee Kuriya, Niti Goel, Jasvinder A Singh, Cátia Duarte, José Da Silva, Dirkjan van Schaardenburg, Susanna Proudman, Lilian H D van Tuyl
OBJECTIVE: The Outcome Measures in Rheumatology (OMERACT) working group on the patients' perspective on remission in rheumatoid arthritis (RA) has been working on this topic since 2010. At OMERACT 2016, progress and preliminary data on validity of measurement instruments for pain, fatigue, and independence in remission in RA were presented, and future directions were explored. METHODS: A special interest group was organized, in which the current data on the patients' perspective on remission were presented...
August 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28748049/effect-of-different-nickel-titanium-rotary-files-on-dentinal-crack-formation-during-retreatment-procedure
#14
Mehmet Çitak, Taha Özyürek
Background. The aim of this study was to compare the dentinal defects caused by Reciproc, TF Adaptive and ProTaper Next NiTi rotary file systems during the retreatment procedure. Methods. A total of 150 mandibular incisors with straight and single root canals were included in the present study. All the root canals were prepared up to an apical diameter 0.40 mm using stainless steel files. Thirty teeth were randomly stored as the negative control group. A total of 120 specimens were obturated with gutta-percha and AH Plus sealer using vertical compaction technique...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/28742116/sutureless-microvascular-anastomosis-assisted-by-an-expandable-shape-memory-alloy-stent
#15
Noriko Saegusa, Shunji Sarukawa, Kunihiro Ohta, Kensuke Takamatsu, Mitsuhiro Watanabe, Takashi Sugino, Masahiro Nakagawa, Yasuto Akiyama, Masatoshi Kusuhara, Kazuo Kishi, Keita Inoue
Vascular anastomosis is the highlight of cardiovascular, transplant, and reconstructive surgery, which has long been performed by hand using a needle and suture. However, anastomotic thrombosis occurs in approximately 0.5-10% of cases, which can cause serious complications. To improve the surgical outcomes, attempts to develop devices for vascular anastomosis have been made, but they have had limitations in handling, cost, patency rate, and strength at the anastomotic site. Recently, indwelling metal stents have been greatly improved with precise laser metalwork through programming technology...
2017: PloS One
https://www.readbyqxmd.com/read/28736407/implementing-physical-activity-recommendations-in-a-tri-ethnic-rural-community-through-a-community-university-partnership
#16
Sally M Davis, Theresa H Cruz, Julia Meredith Hess, Richard Kozoll, Janet Page-Reeves
BACKGROUND: A tri-ethnic rural community with limited resources and a university Prevention Research Center (PRC) developed a partnership to promote evidence-based physical activity. OBJECTIVE: The purpose of this study was to investigate how a community-university partnership can disseminate and implement ἀe Commu nity Guide's recommendations for increasing physical activity and create a model for other under-resourced communities experiencing high rates of chronic disease...
2017: Progress in Community Health Partnerships: Research, Education, and Action
https://www.readbyqxmd.com/read/28717290/to-compare-the-efficacy-of-c-reactive-protein-and-total-leucocyte-count-as-markers-for-monitoring-the-course-of-odontogenic-space-infections
#17
Rishi Bali, Parveen Sharma, Priya Ghanghas, Niti Gupta, Jay Dutt Tiwari, Abhiroop Singh, Nitin Sapra, Disha Goyal
OBJECTIVE: To compare the efficacy of CRP and TLC as markers for monitoring the course of odontogenic space infections (OSI) in 50 patients. METHODS: A Clinical severity scale (CSS) was developed to grade the severity of infections in patients. Blood samples were taken preoperatively and postoperatively at day 1, day 2, day 3 and day 7 for measuring the levels of CRP and TLC. The trends of CRP and TLC were analysed against the CSS. The data was subjected to paired "t" test, ANOVA, Spearman rank correlation, Pearson's bivariate correlation as appropriate...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28706965/experiments-on-deformation-behaviour-of-functionally-graded-niti-structures
#18
Bashir S Shariat, Qinglin Meng, Abdus S Mahmud, Zhigang Wu, Reza Bakhtiari, Junsong Zhang, Fakhrodin Motazedian, Hong Yang, Gerard Rio, Tae-Hyun Nam, Yinong Liu
Functionally graded NiTi structures benefit from the combination of the smart properties of NiTi and those of functionally graded structures. This article provides experimental data for thermomechanical deformation behaviour of microstructurally graded, compositionally graded and geometrically graded NiTi alloy components, related to the research article entitled "Functionally graded shape memory alloys: design, fabrication and experimental evaluation" (Shariat et al., 2017) [1]. Stress-strain variation of microstructurally graded NiTi wires is presented at different heat treatment conditions and testing temperatures...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28705081/an-evaluation-and-comparison-of-myeloperoxidase-enzymatic-activity-during-initial-orthodontic-alignment-an-in-vivo-study
#19
Asma Fatima, Ashok Kumar Talapaneni, Abdul Saleh, Safiya Sana, Arshad Hussain
INTRODUCTION: Tooth movement during orthodontic treatment is possible because of mechanical force-induced inflammation and remodelling in the periodontal ligament. Variation in the inflammatory response might be anticipated with initial aligning archwires of different composition. Myloperoxidase (MPO) is an enzyme found in neutrophil granules that represents an important marker of inflammation. The aim of this study was to measure MPO enzyme activity during initial alignment with orthodontic arch wires of different alloy types...
July 13, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28696713/modulation-of-the-binding-affinity-of-polyzwitterion-conjugated-protein-by-ion-specific-effects-in-crowded-environments
#20
Wangqin Song, Jie Zhu, Lvdan Liu, Guangming Liu
Macromolecular crowding could influence the binding affinity of the polyzwitterion-conjugated proteins. Herein, the hydrolysis of N-succinyl-Ala-Ala-Pro-Phe p-nitroanilide by the poly(carboxybetaine) conjugated α-chymotrypsin (PCT) was employed as a model system to investigate the modulation of the binding affinity of the polyzwitterion-conjugated proteins by the ion-specific effects in the crowded environments. In comparison with the bare α-chymotrypsin (BCT), the binding affinity of the PCT to the peptide is stronger in the dilute solutions but becomes weaker in the crowded environments...
July 24, 2017: Journal of Physical Chemistry. B
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