Download or read book Improving Bonding Strength of Mild Self etching Adhesive to Ground and Intact Enamel by Plasma Treatment written by Mingming Gu and published by . This book was released on 2015 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Clinical Plasma Medicine written by Hans-Robert Metelmann and published by Springer. This book was released on 2018-05-04 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the state of the art in clinical plasma medicine and outlines translational research strategies. Written by an international group of authors, it is divided into four parts. Part I is a detailed introduction and includes basic and recent research information on plasma sciences, plasma devices and mechanisms of biological plasma effects. Parts II and III provide valuable clinical insights f.e. into the treatment of superficial contaminations, ulcerations, wounds, treatment of cells in cancer, special indications like in heart surgery, dentistry, palliative treatment in head and neck cancer or the use of plasma in hygiene. Part IV offers information on how and where to qualify in plasma medicine and which companies produce and supply medical devices and is thus of particular interest to medical practitioners. This comprehensive book offers a sciences based practical to the clinical use of plasma and includes an extended selection of scientific medical data and translational literature.
Download or read book Ultra Structural Aspects of Human Enamel Surface Pretreatments written by Jiajun Zhu and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Ultra-structural Aspects of Human Enamel Surface Pretreatments" by Jiajun, Zhu, 朱嘉珺, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Enamel acid etching has been studied for almost 60 years, i.e., since successful enamel adhesion was first achieved. It was proposed to be due to the micro-mechanical interlocking based on the use of phosphoric acid to etch the so-called ideal etching pattern etching, at certain conditions. According to the systematically screened 2500 non-duplicated publications, with the inclusion of 175 laboratory studies and 18 clinical trials, phosphoric acid etching was found and is still considered to produce promising bonding on intact enamel surfaces. However, other etching agents, such as poly(acrylic acid), self-etching primers (SEP), non-rinse conditioners and other acids could also contribute to satisfactory bond strengths without creating too high surface roughness, etching depth and/or morphological alteration. Thus, an ideal etching pattern might not be necessary in enamel adhesion. An unduly use of ideal etching pattern in literature to assess the enamel adhesion seems more prone to the flaw observations and vague conclusions. Therefore, a fundamental understanding of enamel adhesion is vital. In this thesis, an ultra-structural investigation based on chemical composition, crystallography, micro-roughness, morphology, micro-hardness and surface tension, on intact human mature enamel with various pretreatment methods were studied, with an ethical approval (HKWC-HKU Cluster REC/IRB document No.: UW13-262). The current study found that phosphoric acid etching by liquids and gels could remove the superficial aprismatic enamel layer. The acid etching could also generate a rougher, softer and porous enamel surface, whilst commercial SEPs that contain 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) and 2-(methacryloyloxy)ethyl phosphates (HEMA-phosphates) left excess amounts of phosphates onto enamel surfaces and showed a minor demineralization effect. Furthermore, mono-HEMA-phosphate solutions could demonstrate both mild etching and a chemically reactive effect on the intact enamel, particularly when at 40 v/v%. All the pretreatment methods used in this study could effectively increase enamel surface free energy, i.e. physical adsorption deemed to be the critical factor rather than micro-mechanical adhesion in enamel adhesion. Apparently, the measurement of surface free energy was probably more appropriate than morphological examination to evaluate the enamel surface pretreatment method. In addition, due to the insignificant etching effect, the definition of "self-etching" might need to be re-considered. To conclude, the current ultra-structural investigation on various intact human enamel pretreatment methods may offer new insights about the basics and fundamental theory for enamel adhesion. This may yet lead to a better development of primers to serve and enhance clinical dentistry. DOI: 10.5353/th_b5387962 Subjects: Dental enamel - Ultrastructure
Download or read book Surface Preparation Techniques for Adhesive Bonding written by Raymond F. Wegman and published by William Andrew. This book was released on 2012-12-31 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Preparation Techniques for Adhesive Bonding is an essential guide for materials scientists, mechanical engineers, plastics engineers, scientists and researchers in manufacturing environments making use of adhesives technology. Wegman and van Twisk provide practical coverage of a topic that receives only cursory treatment in more general books on adhesives, making this book essential reading for adhesion specialists, plastics engineers, and a wide range of engineers and scientists working in sectors where adhesion is an important technology, e.g. automotive / aerospace, medical devices, electronics. Wegman and van Twisk provide a wealth of practical information on the processing of substrate surfaces prior to adhesive bonding. The processing of aluminum and its alloys, titanium and its alloys, steels, copper and its alloys, and magnesium are treated in the form of detailed specifications with comparative data. Other metals not requiring extensive treatment are also covered in detail, as are metal matrix and organic matrix composites, thermosets and thermoplastics. This new edition has been updated with coverage of the latest developments in the field including the sol-gel process for aluminum, titanium, and stainless steel, atmospheric plasma treatment for metals, plastics and rubbers and treatments for bronze and nickel alloys. - Updated to include recent technological developments and chemicals currently prescribed for cleaning and surface preparation; a new generation of adhesives technologists can benefit from this classic guide - Enables Materials and Process personnel to select the best process available for their particular application - Practical coverage of a topic that receives only cursory coverage in more general books on adhesives: essential reading for adhesion specialists, plastics engineers, and a wide range of engineers and scientists working in sectors where adhesion is an important technology, e.g. automotive / aerospace, medical devices, electronics
Download or read book Surface Treatment of Materials for Adhesive Bonding written by Sina Ebnesajjad and published by William Andrew. This book was released on 2013-10-22 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at engineers and materials scientists in a wide range of sectors, this book is a unique source of surface preparation principles and techniques for plastics, thermosets, elastomers, ceramics and metals bonding. With emphasis on the practical, it draws together the technical principles of surface science and surface treatments technologies to enable practitioners to improve existing surface preparation processes to improve adhesion and, as a result, enhance product life. This book describes and illustrates the surface preparations and operations that must be applied to a surface before acceptable adhesive bonding is achieved. It is meant to be an exhaustive overview, including more detailed explanation where necessary, in a continuous and logical progression. The book provides a necessary grounding in the science and practice of adhesion, without which adequate surface preparation is impossible. Surface characterization techniques are included, as is an up-to-date assessment of existing surface treatment technologies such as Atmospheric Plasma, Degreasing, Grit blasting, laser ablation and more. Fundamental material considerations are prioritised over specific applications, making this book relevant to all industries using adhesives, such as medical, automotive, aerospace, packaging and electronics. This second edition represents a full and detailed update, with all major developments in the field included and three chapters added to cover ceramic surface treatment, plasma treatment of non-metallic materials, and the effect of additives on surface properties of plastics. - A vital resource for improving existing surface treatment processes to increase product life by creating stronger, more durable adhesive bonds - Relevant across a variety of industries, including medical, automotive and packaging - Provides essential grounding in the science of surface adhesion, and details how this links with the practice of surface treatment
Download or read book Microtensile Bond Strength of Self etching Adhesives to Prepared and Unprepared Enamel written by Y. Gabriela Ibarra and published by . This book was released on 2000 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Surface Preparation on Resin to Enamel Shear Bond Strength with Self etching Adhesive Systems written by Raed F. Al Ajlouni and published by . This book was released on 2002 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bonding of Dental Alloys to Enamel written by 孔祥陞 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Bonding of Dental Alloys to Enamel" by 孔祥陞, Cheung-sing, Tony, Hung, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract 1 ABSTRACT Purpose: To investigate effects of metal thicknesses and surface treatment methods on the shear bond strength of a dual cured composite resin bonded to three different ceramo-metal dental alloys: nickel-chromium, high-gold and high-palladium dental alloys. Materials and Methods: A dual-cured adhesive composite resin was used to bond dental metal alloy plates of different thickness, composition and surface treatment to acid etched bovine enamel. The specimens (n=180) were stored in water for 24 hours and then loaded in shear with a universal testing machine to failure and bond strengths were recorded. Results: Using ANOVA, the mean shear bond strength for nickel chromium was found to be significantly higher than the other two noble metals (P0.05). Heat treatment of the noble metals showed no significant difference in bond strength compared with sandblasted samples (P>0.05). There was a significant increase in mean shear bond strength with increase in metal 1 Abstract thickness from 0.5mm to 0.7mm (PConclusion: Within the limitations of this study, resin-bonded metal alloy restorations with thickness of 0.7mm or more are preferred over 0.5mm thickness. The differences in shear bond strength between the two noble alloys and the nickel chromium alloy is likely due to the lack of suitable metal oxide. Heat treatment of precious metal alloys did not increase the bond strength to etched enamel and therefore further studies should investigate the use of copper containing gold and non-gold noble alloys which are thought to create suitable oxides for bonding. The relationship between composition of metal alloy, method of surface treatment and the choice of adhesive primer should be carefully considered before clinical use. DOI: 10.5353/th_b3955815 Subjects: Dental metallurgy Dental enamel Dental bonding
Download or read book Etching Time Effects on the Bond Strength of Three Adhesive Systems written by Hung D. Pham and published by . This book was released on 2002 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Phosphoric Acid Etching Prior to Application of Self etching Primer SEP on Shear Bond Strenght written by Grace Shao-Chiu Chen and published by . This book was released on 2010 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION: The objective of this study was to determine the effect of phosphoric acid etching prior to application of self-etching primer on orthodontic bonding in terms of shear bond strength and the adhesive remnant on the enamel surface at debonding. METHODS: Fifty-one extracted human premolars were pumiced, rinsed, dried, and then subjected to three different treatments: Group 1: no phosphoric acid etching + Transbond Plus SEP; Group 2: 15-second etching with 37% phosphoric acid + rinsed + dried + Transbond Plus SEP; Group 3: 30-second etching with 37% phosphoric acid + rinsed + dried + Transbond Plus SEP. Precoated metal brackets (3M Unitek, APC Plus, Victory brackets) were then bonded following the manufacturer's recommendation. An Instron Universal Testing Machine was used to test shear bond strength (SBS) at a crosshead speed of 0.5 mm/min. Adhesive remnant index (ARI) was assigned to all specimens under a 16 times magnification using a light microscope. RESULTS: One-way repeated measured analysis of variance test (ANOVA) revealed no significant differences in shear bond strength among all three groups. Kruskal Wallis test revealed that there was a significant difference in ARI score between Group 1 when compared to Groups 2 and 3. Two-way analysis of variance was used to examine any statistical difference in frequency of enamel fracture craters among the three groups. CONCLUSION: There was no statistical difference in shear bond strength between the three groups. Most specimens demonstrated adequate shear bond strength (>/= 6 MPa) for routine clinical application. Etching enamel with phosphoric acid prior to the use of Transbond Plus SEP resulted in more adhesive remaining on the enamel surface. The removal of this excess surface cement may lead to increased enamel loss during post debonding clean up.
Download or read book The Effect of Phosphoric Acid Etch in Conjunction with Self etching Primer on Enamel Surfaces and Resultant Orthodontic Bracket Bond Strength written by Michael Bruce Olsen and published by . This book was released on 2013 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the methods of preparing the enamel surface for orthodontic bracket adhesion in overcoming pellicle and possible fluid contamination from prebonding cleaning techniques and the effect of these treatments on the enamel surface and resultant bond strength. Shear bond strength testing, Raman linear mapping, and scanning electron microscopy was used to evaluate shear bond strength, depth of resin interface, and surface and cross-sectional characteristics respectively. Based on an analysis of variance (a=.05), there was a significant effect of pretreatment enamel conditioning prior to self-etching primer application on shear bond strength. This difference was found to exist solely between the pumice prophylaxis group and the 34% phosphoric acid etch group. No difference was found to exist across all groups with regards to depth of resin penetration. Scanning electron microscopy showed no significant differences in enamel surface or resin/enamel interface characteristics. Results suggest that enamel cleaning techniques prior to SEP application are unnecessary and even deleterious to bond strength and resin penetration.
Download or read book An in Vitro Evaluation of a New Self etching Adhesive for Orthodontic Bracket Bonding written by Ismail Amra and published by . This book was released on 2004 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conditioning and priming of unground enamel using conventional acid etchants and bonding resins has been recommended for effective bonding in orthodontics. The use of the newer single-step self-etching adhesives which etch, prime and apply the resin bonding agents simultaneously without rinsing, has been increasing in popularity. The purpose of this study was to compare the shear-peel bond strength and the amount of adhesive remaining on the tooth after debonding of a traditional two-step etch and prime technique, with a single-step alternative, when used with a composite resin adhesive system and a resin-modified glass ionomer cement system.
Download or read book Surface Treatment of Materials for Adhesive Bonding written by Sina Ebnesajjad and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at engineers and materials scientists in a wide range of sectors, this book is a unique source of surface preparation principles and techniques for plastics, thermosets, elastomers, ceramics and metals bonding. With emphasis on the practical, it draws together the technical principles of surface science and surface treatments technologies to enable practitioners to improve existing surface preparation processes to improve adhesion and, as a result, enhance product life. This book describes and illustrates the surface preparations and operations that must be applied to a surface before acceptable adhesive bonding is achieved. It is meant to be an exhaustive overview, including more detailed explanation where necessary, in a continuous and logical progression. The book provides a necessary grounding in the science and practice of adhesion, without which adequate surface preparation is impossible. Surface characterization techniques are included, as is an up-to-date assessment of existing surface treatment technologies such as Atmospheric Plasma, Degreasing, Grit blasting, laser ablation and more. Fundamental material considerations are prioritised over specific applications, making this book relevant to all industries using adhesives, such as medical, automotive, aerospace, packaging and electronics. This second edition represents a full and detailed update, with all major developments in the field included and three chapters added to cover ceramic surface treatment, plasma treatment of non-metallic materials, and the effect of additives on surface properties of plastics. A vital resource for improving existing surface treatment processes to increase product life by creating stronger, more durable adhesive bonds Relevant across a variety of industries, including medical, automotive and packaging. Provides essential grounding in the science of surface adhesion, and details how this links with the practice of surface treatment.
Download or read book Textbook of Operative Dentistry written by Nisha Garg and published by Boydell & Brewer Ltd. This book was released on 2010-08 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition is a complete guide to operative dentistry. Beginning with an introduction, physiology, dental caries and tooth preparation, the text also discusses pain and infection control. The following sections examine different operative procedures. New techniques such as minimal intervention dentistry, nanotechnology and lasers; and advances in dental materials are discussed in detail. More than 1200 colour images, illustrations, flow charts and tables are included. Key points Complete guide to operative dentistry Discusses numerous different procedures, and pain and infection control New techniques and advances in materials described in detail More than 1200 colour images, illustrations, flow charts and tables Previous edition published in 2010
Download or read book Effect of Enamel Preparation on the Microtensile Bond Strength of Self etching Primers written by Betzi Arvelo and published by . This book was released on 2003 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Composite Bond Strength of One and Two Step Adhesive Systems Used for Restorations on Primary Teeth Using Varying Acid Etch Application Times written by Bradley Klus and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to determine whether the composite bond strength acquired using a single step self-etching bonding system is as or more effective when compared to the two step etch-rinse-bond system at clinically relevant in-vitro standards. A total of 80 extracted human deciduous with at least one intact smooth surface were collected with parental consent. Collected teeth were randomly assigned to one of four treatment protocols (n=20): single step self-etch (Adper Prompt L-Pop, 3M ESPE), two step etch (15s)-rinse-bond (Optibond Solo Plus, Kerr), single step self etch (Adper L Pop, 3M ESPE) with 30s pre-etch, and two step etch (30s)-rinse-bond (Optibond Solo Plus, Kerr). A composite cylinder of uniform shape was bonded to each tooth using the designated adhesive system and specimens were tested with a universal testing machine. Descriptive statistics and statistical analysis was performed. Median shear bond strengths for all specimens, regardless of treatment group, ranged from 3.25 MPa to 43.13 MPa. These values are above suggested minimum clinical required values of 3MPa. A Kruskal-Wallis analysis between treatment groups found statistical significance (p
Download or read book Hybridization of Dental Hard Tissues written by Nobuo Nakabayashi and published by Quintessence Publishing (IL). This book was released on 1998 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Evolution of Dentin-Resin Bonding. -- 2. Properties of Dentin. -- 3. Acidic Conditioning and Hybridization of Substrates. -- 4. Characterization of the Hybrid Layer. -- 5. The Quality of the Hybridized Dentin. -- 6. Clinical Applications of Hybrid Layer Formation.
