Download or read book The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface treated and Non surface Treated Nickel Titanium Archwires written by Mary Becker and published by . This book was released on 2019 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the effect of simulated oral conditions (storage in phosphate-buffered saline (PBS) with bracket-related load deflection at 37±1°C for 12 weeks) on surface-treated and non-surface treated NiTi archwires. Three types of NiTi wires were tested: non-coated NiTi wire, nitrogen-treated NiTi wire, and rhodium-coated NiTi wire. Wire segments from each NiTi wire type underwent surface roughness measurements and friction testing in the as-received condition (control group) and following exposure to a simulated oral environment for 12 weeks (experimental treatment group). A profilometer was used to measure average roughness in three areas of each wire segment. After profilometry, a universal mechanical tester was used for friction testing. Each wire segment was pulled through a bracket in a passive configuration for 5 mm and the minimum, maximum, and mean of the top 10% of the load was calculated. Three representative specimens from each NiTi wire type in each condition were viewed using scanning electron microscopy (SEM) to provide qualitative surface topography analysis. Results of the study showed that all wires stored in simulated oral conditions (PBS at 37±1°C with bracket-related load deflection) were significantly rougher (p 0.05) than their counterparts in the as-received condition. Rhodium-coated wires were found to be significantly rougher (p
Download or read book Coated and Uncoated Nickel titanium Archwires written by Loveland, Kelcey Loveland and published by . This book was released on 2017 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the effect of exposure to bracket-related load deflection on the mechanical properties and surface characteristics of esthetic coated and uncoated nickel titanium archwires. Two types of coated archwires were tested: one with a rhodium ion coating and another with a polymer coating. Corresponding uncoated wires of the same size were also tested. These four different wires were divided into treatment groups based on exposure to bracket-related load deflection and storage in PBS at 37±1°C. A three-point bend test in DI water at 37±1°C was performed on specimens at three time points: 4 weeks, 8 weeks, and 12 weeks. Unloading forces at 1, 2, and 3 mm of deflection were recorded. After 12 weeks exposure, three representative specimens from each treatment group along with untested wires were viewed using scanning electron microscopy (SEM) to provide a qualitative surface topography analysis. Results of the present study showed that no significant differences (p > 0.05) in unloading force were present in wires exposed to bracket-related load deflection. However, significant differences were observed between coated and uncoated wire types (p
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1989 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Topical Fluoride Agents on Coated Nickel titanium Archwires written by Kristen Marie Wellemeyer Sander and published by . This book was released on 2015 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the effect of exposure to topical fluoride agents on the mechanical properties and surface characteristics of esthetic coated nickel-titanium archwires. Two types of coated wires were tested: one with a polymer coating and one with a rhodium ion coating. Wires were divided into treatment groups based on type of fluoride exposure: no treatment (DI water), neutral sodium fluoride gel, neutral sodium fluoride rinse, or acidulated phosphate fluoride (APF) gel. A three-point bend test in DI water at 37"1°C was performed on specimens before and after test solution exposure. Unloading forces at 1, 1.5, and 2mm of deflection were reported, along with unloading elastic modulus and yield strength. Three representative specimens from each treatment group along with untested wires underwent qualitative scanning electron microscopy (SEM) surface topography analysis following test solution exposure. Results of the present study indicated no significant difference between treatment groups for any mechanical properties measured (p> 0.05) after fluoride exposure. However, significant differences were observed between wire types for all measures within all treatment groups (p
Download or read book Orthodontic Materials written by Wiliam A. Brantley and published by Thieme. This book was released on 2011-01-01 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this important new textbook all scientific and clinical aspects of orthodontic materials are described.Recent developments in science and technology have led to the introduction of a plethora of new orthodontic products. This work serves as an excellent source of information for a field that requires knowledge of basic elements of materials science, engineering, chemistry, and physics, as well as clinical orthodontics. The subject has been part of graduate orthodontic education for almost three decades. Besides servicing the orthodontic training programs, the book also - investigates the interactions of orthodontic materials with other dental materials as well as hard tissues in the oral cavity,- gives a background to allow for proper material selection for efficient orthodontic mechanics,- treats the issues of biocompatibility, cytotoxicity and mutagenicity of materials.
Download or read book Contemporary Orthodontics 6e South Asia Edition E Book written by William R Proffit, Dds PhD and published by Elsevier India. This book was released on 2019-06-29 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contemporary Orthodontics, 6e: South Asia Edition-E-book
Download or read book Orthodontic Applications of Biomaterials written by Theodore Eliades and published by Woodhead Publishing. This book was released on 2016-11-22 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontic Applications of Biomaterials: A Clinical Guide reviews the applications of biomaterials and their effects on enamel preparation, bonding, bracket and archwire ligation, mechanotherapy, debonding, and long-term enamel structural, color, and surface effects. The book provides a step-by-step analysis of the phenomena occurring, their clinical importance, and their underlying cause without the use of complex mathematical or physical-chemical analyses, with the goal of providing 'digestible' evidence for the clinician. - Serves as a reference source of the spectrum of biomaterials used in orthodontics - Presents the most current evidence of state-of-the-art methods of materials research - Provides substantiation for the effects occurring during the materials' uses
Download or read book Biotribology written by Duncan Dowson and published by Wiley. This book was released on 2019-12-04 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Sterilization on the Mechanical Properties and the Surface Characteristics of Nickel titanium Arch Wires written by Michael J. Mayhew and published by . This book was released on 1986 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface and Mechanical Properties of Epoxy Coated Superelastic Nickel Titanium Orthodontic Archwires Before and After Clinical Application written by Abdulbasit Mohammed Shagan and published by . This book was released on 2008 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Textbook of Contact Dermatitis written by R.J.G. Rycroft and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 829 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ideally every patient with eczema should be patch tested and the importance of this investigation is now universally accepted. The simplicity of the technique belies its many pitfalls, the greatest being to lack the knowledge required to select the correct allergens and to interpret the results. The introduction, nearly 20 years ago, of the journal Contact Dermatitis greatly stimulated the reporting of the clinical side of contact dermatitis but a vast amount of laboratory work has also been published in other journals on the mechanisms and theory of these reactions. The literature on the subject is now quite vast and a comprehensive book on the clinical and research aspects of contact dermatitis has been sorely needed. This textbook was carefully planned to gather together what is known of the subject into a cohesive whole and it has succeeded admirably. It consists of 22 chapters written by 41 contributors, each selected for their special study of particular subjects. Every feature of contact dermatitis has been covered, beginning with its history and even concluding with the names and addresses of those worldwide who have a specific interest in the subject. The text is illustrated and well laid out; it has been broken up into clearly demarcated sections making it easy to read and its information readily accessible. One's own writing concentrates the mind but editing the texts of authors from so many different countries was a task of considerable proportions.
Download or read book Shape Memory Implants written by L. Yahia and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shape memory alloy implants or "smart biomaterial" have already been used in humans for 20 years in selected countries. Restrictions in the use of biomaterials in living organisms being reduced throughout the world now the use of SMA implants continue to expand in the fields of vascular and orthopaedic surgery, minimally invasive surgery and drug delivery systems. This book is to provide a state of the art of SMA implants and devices. For the first time long-term clinical experiences and techniques of SMA biocompatibility are presented.
Download or read book Friction and Wear Transitions of Materials written by P. J. Blau and published by William Andrew. This book was released on 1989 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapters describe friction and wear in general, emphasizing not theory, but examples of materials behavior, variables which affect transitions, and considerations in tribotesting materials. Annotation copyright Book News, Inc. Portland, Or.
Download or read book Plasma Electrolytic Oxidation PEO Coatings written by Marta Mohedano and published by MDPI. This book was released on 2021-06-02 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma electrolytic oxidation (PEO), also known as micro-arc oxidation (MAO), functionalizes surfaces, improving the mechanical, thermal, and corrosion performance of metallic substrates, along with other tailored properties (e.g., biocompatibility, catalysis, antibacterial response, self-lubrication, etc.). The extensive field of applications of this technique ranges from structural components, in particular, in the transport sector, to more advanced fields, such as bioengineering. The present Special Issue covers the latest advances in PEO‐coated light alloys for structural (Al, Mg) and biomedical applications (Ti, Mg), with 10 research papers and 1 review from leading research groups around the world.
Download or read book The Glossary of Prosthodontic Terms written by and published by . This book was released on 1994 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics of Surfaces and Interfaces written by Harald Ibach and published by Springer Science & Business Media. This book was released on 2006-11-18 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This graduate-level textbook covers the major developments in surface sciences of recent decades, from experimental tricks and basic techniques to the latest experimental methods and theoretical understanding. It is unique in its attempt to treat the physics of surfaces, thin films and interfaces, surface chemistry, thermodynamics, statistical physics and the physics of the solid/electrolyte interface in an integral manner, rather than in separate compartments. It is designed as a handbook for the researcher as well as a study-text for graduate students. Written explanations are supported by 350 graphs and illustrations.
