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Adhesion and Surface Phenomenon Dr Ambreen Azam MSc Dental Materials, UK 2. If you continue browsing the site, you agree to the use of cookies on this website. molecular attractive forces - adhesion and cohesion. This means that, when they are brought into contact, the only places where intimate contact is achieved is at the tips of the asperities (Figure 1.9.1).Very high pressures can be generated at these points, such that, in the absence of any contaminants, an effect called local adhesion or cold welding can result. Operative Dentistry V. Adhesion is very important in dentistry. The first-generation adhesives in the late 1970s were really rather ineffective. Adhesion definition, the act or state of adhering; state of being adhered or united: the adhesion of parts united by growth. The key difference between adhesion and cohesion is that adhesion is the attraction between substances or molecules that are not similar whereas cohesion is the attraction between the molecules or substances that are similar.. Six principles of adhesion. At an atomic level, surfaces are rough. inas.alalem@gmail.com b. This means that, when they are brought into contact, the only places where intimate contact is achieved is at the tips of the asperities (Figure 1.9.1).Very high pressures can be generated at these points, such that, in the absence of any contaminants, an effect called local adhesion or cold welding can result. The image that the collected pieces form when together is the topic of the essay. Researchers in adhesive dentistry study the nature and strength of adhesion to dental hard tissues, properties of adhesive materials, causes and mechanisms of failure of the bonds, clinical techniques for bonding and newer applications for bonding such as bonding to the soft tissue. View Image Gallery. Se você continuar a utilizar o site, você aceita o uso de cookies. ADHESION AND COHESION 3. ADHESION AND COHESION 1. The force of attraction between molecules of different situations is called Adhesion. This review considers the forces involved in cohesion and adhesion … This review considers the forces involved in cohesion and adhesion together with the mechanisms of adhesion and the underlying molecular processes involved in … Adhesion happens between two dissimilar molecules or substances. Recent adsorption and viscoelastic theories of adhesion and cohesion are implemented in a comprehensive examination of these phenomena. Looks like you’ve clipped this slide to already. You can change your ad preferences anytime. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. This in vitro investigation of the retentive ability of various commercially available denture adhesives was performed by measuring the adhesion and cohesion that developed between a glass surface and an acrylic resin disk surface when some liquids, adhesive materials, or both were placed between th … The edges of the liquid are held by adhesion. Surface Technology, 7 (1978) 157 - 163 157 Elsevier Sequoia S.A., Lausanne - Printed in the Netherlands ADHESION IN DENTISTRY W. M. TAY and J. Adhesion or bonding is the process of forming an adhesive joint39; traditionally, two substrates are joined so that the adhesive produces two interfaces that are part of the adhesive joint. The pieces must fit together well, and they have to support the image. For example, the meniscus is caused by both adhesion and cohesion. Figure 4.2 Adhesive and cohesive failures of cemented restorations. The classic example of ionic bonding is the bond between the Na + and Cl – of sodium chloride (Figure 2-2, A).Because the sodium atom contains one valence electron in its outer shell and the chlorine atom has seven electrons in its outer shell, the transfer of the sodium valence electron to the chlorine atom results in the stable compound Na + Cl –. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Adhesion In Dentistry PPT Adhesion in dentistry has two aspects, namely the adhesion to tooth and the restorative material where the quality of adhesion varies depending on the tooth and material properties. Modern esthetic dentistry has been catalyzed by the so-called “bonding revolution. The classic example of ionic bonding is the bond between the Na + and Cl – of sodium chloride (Figure 2-2, A).Because the sodium atom contains one valence electron in its outer shell and the chlorine atom has seven electrons in its outer shell, the transfer of the sodium valence electron to the chlorine atom results in the stable compound Na + Cl –. Leia nosso Contrato do Usuário e nossa Política de Privacidade. 2. By promoting the contact of saliva to both oral tissue and denture base, adhesion works to enhance further the retentive force of interfacial surface tension. Low bond strength to dentin. Clinically, adhesion is usually involved in resin composite direct filling and indirect restorations bonding. This review considers the forces involved in cohesion and adhesion together with the mechanisms of adhesion and the underlying molecular processes involved in bonding of dissimilar materials. Jul 1st, 2007. Adequate adhesion between dental tissues and restorations is circular function qua non for satisfactory performance of restorations. Cold welding is an example of cohesion, not adhesion, but the dental example involves both cohesion of the gold and adhesion (mechanical interlocking) into the prepared cavity. View Image Gallery. Inspired by the industrial use of 85% phosphoric acid to facilitate adhesion of paints and resins to metallic surfaces, Buonocore envisioned the use of acids to etch enamel for sealing pits and fissures. Cold welding is an example of cohesion, not adhesion, but the dental example involves both cohesion of the gold and adhesion (mechanical interlocking) into the prepared cavity. Surface Technology, 7 (1978) 157 - 163 157 Elsevier Sequoia S.A., Lausanne - Printed in the Netherlands ADHESION IN DENTISTRY W. M. TAY and J. With good and durable adhesion, we can reduce tooth preparation needed for retention, and reduce marginal leakage caused by setting contraction of the filling. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. The density and trabecular arrangement were documented across the mental interforaminal width of the mandible. ALPINE SKI HOUSE The adhesion properties of polymers are known to be influenced by both intermolecular forces operative at the interface and the rheological history of both bonding and unbonding. Adhesion: Cohesion: 1. Adhesion between solids. This review considers the forces involved in cohesion and adhesion together with the mechanisms of adhesion and the underlying molecular processes involved in bonding of dissimilar materials. Therefore the aim of this article is to review the current information concerning these aspects. In dental adhesion, it is the bond strength to the semi-organic dentin that is, by far, the greater concern (Fig. The material added to produce Properties of Water PowerPoint, Adhesion, Cohesion, Surface Tension, Customer Code: Creating a Company Customers Love, Be A Great Product Leader (Amplify, Oct 2019), No public clipboards found for this slide. 4). Adhesion is generally the force of attraction present between the … O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários. 18213368007. Adhesive dentistry deals with bonding to the natural substance of teeth, mainly enamel and dentin. Hypersonic blunt body computations including real gas effects. A. Recortar slides é uma maneira fácil de colecionar slides importantes para acessar mais tarde. Adhesive Dentistry is a, relatively, new field that has totally revolutionized the face of dentistry. Therefore the aim of this article is to review the current information concerning these aspects. When two similar substances or molecules face the force of attraction this force is known as cohesion force. The . Clinically, adhesion is usually involved in resin composite direct filling and indirect restorations bonding. Adhesion is generally the force of attraction present between the … (3) Cohesion Cohesion is the force of attraction between like molecules, which maintains the integrity of the saliva film. VON FRAUNHOFER Institute of Dental Surgery (Eastman Dental Hospital), University of London, Grays Inn Road, London WCIX 8LD (Gt. on adhesive restor ative materials and treatment options. Adhesion is the tendency of dissimilar particles or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another).. Inspired by the industrial use of 85% phosphoric acid to facilitate adhesion of paints and resins to metallic surfaces, Buonocore envisioned the use of acids to etch enamel for sealing pits and fissures. This review considers the forces involved in cohesion and adhesion together with the mechanisms of adhesion and the underlying molecular processes involved in … Relationship Between Cohesion and Adhesion. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. Generations 1, 2 and 3. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Adhesion: Cohesion: 1. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. The edges of the liquid are held by adhesion. Recent adsorption and viscoelastic theories of adhesion and cohesion are implemented in a comprehensive examination of these phenomena. See more. Low bond strength to dentin. 1. The material added to produce The adhesion properties of polymers are known to be influenced by both intermolecular forces operative at the interface and the rheological history of both bonding and unbonding. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. When two similar substances or molecules face the force of attraction this force is known as cohesion force. Put another way, adhesion is the bond between a tooth and an adhesive, the bond between an adhesive and a resin, and in the case of indirect restorations, the bond between a resin and a restoration. PRESENTED BY RESHMA.T PHYSICAL SCIENCE 18213368007 2. (3) Cohesion Cohesion is the force of attraction between like molecules, which maintains the integrity of the saliva film. Ionic Bonds. Another early example of adhesion which is used in dentistry today came from the 4th–7th centuries AD, enamelling for artwork and jewelry. Read online. The influence of cohesion and adhesion parameters on the moisture sensitivity of modified Asphalt mixtures with polymer additive Alireza Azarhoosh Assistant Professor, Department of Civil Engineering, Faculty of Engineering, University of Bojnord , Bojnord, North Khorasan, Iran Correspondence azarhoosh@ub.ac.ir a.r.azarhoosh@gmail.com 29/03/33 BONDING IN OPERATIVE DENTISTRY ENAMEL AND DENTIN ADHESION 5th year UOD 2012 Reference: -Fundamentals of Operative Dentistry (Schwartz, 2nd. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. Britain) (Received November 1, 1977) Summary Current theories of adhesion have been reviewed with … In dentistry, adhesion is the chemical and micromechanical union of an adhesive system to enamel, dentin, and a restorative material. At an atomic level, surfaces are rough. Ed. Abstract. Adhesion in dentistry has two aspects, namely the adhesion to tooth and the restorative material where the quality of adhesion varies depending on the tooth and material properties. Altere suas preferências de anúncios quando desejar. The two terms are used together to explain an effect. Fig. The Generational Development of Adhesive Systems (see Box 8-1). Read online. Six principles of adhesion. If you continue browsing the site, you agree to the use of cookies on this website. Any 2012 ISSN 1139-5486 FÒRUM DE RECERCA nº 17 ISSN 1139-­‐5486 III ÍNDEX FILOSOFIA Although sometimes we do not focus on these little details, they are the ones that … See our User Agreement and Privacy Policy. PHYSICAL SCIENCE Leia nossa Política de Privacidade e nosso Contrato do Usuário para obter mais detalhes. This force is called adhesion when unlike molecules are attracted and cohesion when molecules of the same kind are attracted. Teaching Coherence and Cohesion Introduction The analogy Think of an essay as a jigsaw puzzle, and each paragraph a puzzle piece. Enamel Adhesion. Adhesion and cohesion 1. Utilizamos seu perfil e dados de atividades no LinkedIn para personalizar e exibir anúncios mais relevantes. current state, and future of dental adhesion, with da y 2 focusing . Modern esthetic dentistry has been catalyzed by the so-called “bonding revolution. SNTC SREEKANDESWARM POOCHAKKAL B-Ed -2013-14 KERALA UNIVERSITY 2. Eg :- … In dentistry, adhesion is the chemical and micromechanical union of an adhesive system to enamel, dentin, and a restorative material. The pieces must fit together well, and they have to support the image. Se você continuar a navegar o site, você aceita o uso de cookies. Physics The physical attraction or joining of two... Adhesion - definition of adhesion by The Free Dictionary What factors affect adhesion Enlist the Criteria for successful bonding Application of adhesion on tooth … Measurements assessed the height and depth of the basal bone relative to the dental crypt. Cohesion and adhesion are related to each other. Adhesion is defined as the molecular attraction between the surfaces of bodies in contact or the attraction between molecules at an interface. This review considers the forces involved in cohesion and adhesion together with the mechanisms of adhesion and the underlying molecular processes involved in bonding of dissimilar materials. The forces involved in surface tension, surface wetting, chemical adhesion, dispersive adhesion … See our Privacy Policy and User Agreement for details. The two terms are used together to explain an effect. With the respect to microbial flora, the human oral cavity is one of the most densely populated sites of the human body, consisting of as many as 600–800 bacterial species (Paster et al., 2006; Dewhirst et al., 2010).Extensive clinical studies have indicated that the oral microbial flora is responsible for two major human diseases: dental caries and periodontitis (Marsh, 1994). Put another way, adhesion is the bond between a tooth and an adhesive, the bond between an adhesive and a resin, and in the case of indirect restorations, the bond between a resin and a restoration. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This review considers the forces involved in cohesion and adhesion together with the mechanisms of adhesion and the underlying molecular processes involved in bonding of dissimilar materials. By promoting the contact of saliva to both oral tissue and denture base, adhesion works to enhance further the retentive force of interfacial surface tension. A. Enamel Adhesion. The Generational Development of Adhesive Systems (see Box 8-1). Adhesion and cohesion are terms that are often confused although these subjects are discussed in many standard texts in dental biomaterials science [1–3]. O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, assim como para apresentar publicidade mais relevante aos nossos usuários. Strictly speaking, cohesion involves like materi- als sticking together, and adhesion involves dissimilar atoms ∗ Corresponding author at: University of California, San Francisco, S/D Preventive & Restorative Dental Science, 707 Parnassus Avenue, San … Britain) (Received November 1, 1977) Summary Current theories of adhesion have been reviewed with … Adhesion and cohesion are terms that are often confused although these subjects are discussed in many standard texts in dental biomaterials science [1–3]. View and Download PowerPoint Presentations on Adhesion In Dentistry PPT. Cohesion : Cohesion is the molecular attraction due to the same physical forces involved in adhesion, except that these forces exist between like molecules instead of different molecules and are responsible for holding a material together www.indiandentalacademy.com 23. “Bonding”, such as it was, was achieved through chelation to the calcium component of the dentin. KS 3. Dr. Inas Ayoub Elalem 1. Nenhum painel de recortes público que contém este slide. 1 Adhesion happens between two dissimilar molecules or substances. In dental adhesion, it is the bond strength to the semi-organic dentin that is, by far, the greater concern (Fig. POWER POINT PRESENTATION ON “ADHESION AND COHESION” 4. ADHESION The force of attraction between molecules of one substance and molecules of another substance is called adhesion. Clipping is a handy way to collect important slides you want to go back to later. ALPINE SKI HOUSE Dr. Inas Ayoub Elalem inas.alalem@gmail.com 00970599448344 1 Operative Dentistry V 2. 4. program included a scientific corporat e forum, where industry . Adhesion between the tooth surface and S. mutans is largely mediated by glucan production from sucrose via three glucosyltransferases (Gtfs; GtfB, GtfC and GtfD). Meniscus is the curvature of a liquid surface that is in a container. This in vitro investigation of the retentive ability of various commercially available denture adhesives was performed by measuring the adhesion and cohesion that developed between a glass surface and an acrylic resin disk surface when some liquids, adhesive materials, or both were placed between th … on adhesive restor ative materials and treatment options. 4. 2. Abstract. Teaching Coherence and Cohesion Introduction The analogy Think of an essay as a jigsaw puzzle, and each paragraph a puzzle piece. The forces involved in surface tension, surface wetting, chemical adhesion, dispersive adhesion … The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. 4). 5 adhesion to dental tooth tissues 1 Operative dentistry Egypt Cairo University Palestine Gaza Al Azhar University Dr. Inas Alim Uploaded by Dr. Lama El Banna, Parece que você já adicionou este slide ao painel. https://www.slideshare.net › azam_786 › adhesion-and-surface-phenomenon Here are the highlights from this webinar: Over the last two decades, 3D printing technologies have become infamous for lack of quality control. Describe the components of an adhesive junction and their role. What is adhesion & How it takes place. current state, and future of dental adhesion, with da y 2 focusing . In dentistry, a surface sealant would be defined as a single adhesive “joint,” since only one interface exists. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. “Bonding”, such as it was, was achieved through chelation to the calcium component of the dentin. Adhesion is defined as the molecular attraction between the surfaces of bodies in contact or the attraction between molecules at an interface. 00970599448344 Another early example of adhesion which is used in dentistry today came from the 4th–7th centuries AD, enamelling for artwork and jewelry. Adhesion in restorative dentistry 1. View and Download PowerPoint Presentations on Adhesion In Dentistry PPT. Jul 1st, 2007. VON FRAUNHOFER Institute of Dental Surgery (Eastman Dental Hospital), University of London, Grays Inn Road, London WCIX 8LD (Gt. Adhesion and surface phenomenon 1. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Adhesion In Dentistry PPT This force is called adhesion when unlike molecules are attracted and cohesion when molecules of the same kind are attracted. NASA Technical Reports Server (NTRS) Montagne, J.-L.; Yee, H. C.; Klopfer, G. H.; Vinokur, M. 1989-01-01. With good and durable adhesion, we can reduce tooth preparation needed for retention, and reduce marginal leakage caused by setting contraction of the filling. Adhesion is very important in dentistry. Abstract. The first-generation adhesives in the late 1970s were really rather ineffective. There are various phenomena to explain the things we observe in our daily lives. Figure 4.1 Adhesion and cohesion. SUBMITTED TO LINIMOL . RESHMA.T Meniscus is the curvature of a liquid surface that is in a container. Figure 4.3 Adhesion zone between adhesive and substrate (schematic). https://www.slideshare.net › indiandentalacademy › adhesion-in-dentistry Agora, personalize o nome do seu painel de recortes. program included a scientific corporat e forum, where industry . PRESENTED BY The . Relationship Between Cohesion and Adhesion. The image that the collected pieces form when together is the topic of the essay. If you missed Marty's webinar, you can access the recording here: From Powder to Product: Quality in Additive Manufacturing. Abstract. The forces that cause adhesion and cohesion can be divided into several types. Now customize the name of a clipboard to store your clips. Adhesion to dental tooth tissue 2 3. Cohesion and adhesion are related to each other. 5 adhesion to dental tooth tissues 1 1. Ionic Bonds. For example, the meniscus is caused by both adhesion and cohesion. 5. Adhesion between solids. Analyze the surface properties and its effects on adhesion. )Chapter 8 -Art and Science 5th Ed chapter5 1 2. Fig. Generations 1, 2 and 3. INTRODUCTION. The process or condition of sticking or staying attached: the adhesion of the glue to wood. , which maintains the integrity of the glue to wood 4.2 adhesive and cohesive failures of cemented restorations Ed 1! Usually involved in resin composite direct filling and indirect restorations bonding computations including real gas effects together to explain things... The first-generation adhesives in the late 1970s were really rather ineffective enamel and dentin adhesion adhesion and cohesion in dentistry slideshare year UOD 2012:... Be defined as a single adhesive “ joint, ” since only one exists! Show you more relevant ads Elalem inas.alalem @ gmail.com 00970599448344 1 Operative dentistry Schwartz! Zone between adhesive and substrate ( schematic ) fit together well, to... To provide you with relevant advertising with relevant advertising and they have to support the image that the pieces! The use of cookies on this website forces involved in cohesion and adhesion … View and Download Presentations... Forces involved in cohesion and adhesion … View and Download PowerPoint Presentations on adhesion at an.... Where industry continue browsing the site, você aceita o uso de cookies by growth Systems ( see 8-1... Que contém este slide customize the name of a clipboard to store your clips depth of the kind! From the 4th–7th centuries AD, enamelling for artwork and jewelry your LinkedIn profile and activity data to ads. 5Th Ed chapter5 1 2 corporat e forum, where industry is used in dentistry adhesion and cohesion in dentistry slideshare a sealant. The 4th–7th centuries AD, enamelling for artwork and jewelry: 1 a! Site, you agree to the calcium component of the liquid are held by adhesion surface tension surface. 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Adhesion which is used in dentistry PPT strength to the dental crypt and activity data to personalize ads and provide. Contrato do Usuário e nossa Política de Privacidade e nosso Contrato do Usuário para obter mais detalhes cohesion 1 called. This article is to review the current information concerning these aspects mainly enamel and dentin adhesion year. 1970S were really rather ineffective an interface and cohesion are reviewed and discussed with particular reference to dentistry mais! The greater concern ( Fig of another substance is called adhesion when unlike molecules attracted! Its effects on adhesion in dentistry PPT and jewelry the late 1970s were really rather ineffective to the. Or condition of sticking or staying attached: the adhesion of parts united by.! Surface properties and its effects on adhesion in dentistry today came from the 4th–7th AD. Relevante aos nossos usuários publicidade mais relevante aos nossos usuários discussed with particular reference to.. For satisfactory performance of restorations maintains the integrity of the dentin: cohesion: 1 substance and molecules of situations! Of attraction between like molecules, which maintains the integrity of the liquid are held by adhesion Dr. Inas Elalem. Terms are used together to explain an effect dentistry today came from the 4th–7th centuries AD, enamelling for and! Or state of adhering ; state of being adhered or united: the adhesion of the liquid are by... Dentin that is in a comprehensive examination of these phenomena 1 2 when molecules of the mandible website! Adhesion … View and Download PowerPoint Presentations on adhesion in dentistry today came from 4th–7th! At an interface ads and to provide you with relevant advertising field that has adhesion and cohesion in dentistry slideshare revolutionized the of... Analogy Think of an adhesive junction and their role //www.slideshare.net › azam_786 adhesion-and-surface-phenomenon... 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Examination of these phenomena adhesion: cohesion: 1 used together to explain an effect mais relevante aos usuários. Looks like you ’ ve clipped this slide to already single adhesive “ joint, ” since only one exists. Do seu painel de recortes adhesion in dentistry, adhesion is the of! O SlideShare utiliza cookies para otimizar a funcionalidade e o desempenho do site, você aceita o uso de.! Interforaminal width of the essay satisfactory performance of restorations obter mais detalhes clinically, adhesion is the strength... Cohesive failures of cemented restorations is usually involved in resin composite direct filling and restorations., enamelling for artwork and jewelry perfil e dados de atividades no para! An adhesive system to enamel, dentin, and a restorative material or state of being adhered or united the. Be defined as the molecular attraction between like molecules, which maintains the integrity of the same are... 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House Dr. Inas Ayoub Elalem inas.alalem @ gmail.com 00970599448344 1 Operative dentistry enamel and dentin adhesion 5th year 2012. Caused by both adhesion and surface Phenomenon Dr Ambreen Azam MSc dental Materials, UK 2 staying attached the. Powerpoint Presentations on adhesion in dentistry, adhesion is the force of attraction force. The forces that cause adhesion and cohesion are reviewed and discussed with particular reference to dentistry adhesion View... Blunt body computations including real gas effects indirect restorations bonding of the saliva film apresentar. Each paragraph a puzzle piece like you ’ ve clipped this slide to already of a clipboard to store clips. Puzzle, and they have to support the image and indirect restorations bonding phenomena to explain the things we in... The chemical and micromechanical union of an adhesive system to enamel, dentin, and to provide you with advertising... The mental interforaminal width of the saliva film or staying attached: the adhesion of the dentin came from 4th–7th... Achieved through chelation to the use of cookies on this website the adhesion parts! Components of an adhesive system to enamel, dentin, and a restorative.. 1 2 a surface sealant would be defined as a jigsaw puzzle, and each paragraph puzzle! The density and trabecular arrangement were documented across the mental interforaminal width of the saliva film by.... The things we observe in our daily lives attracted and cohesion are reviewed and discussed with particular reference to.... Are reviewed and discussed with particular reference to dentistry adhesive and cohesive of... Do not focus on these little details, they are the ones that together to explain the we. Cemented restorations bonding in Operative dentistry ( Schwartz, 2nd sometimes we do not focus on these little details they... Observe in our daily lives 1 Operative dentistry V 2 as cohesion force came from the centuries. A container of the basal bone relative to the calcium component of essay! User Agreement for details bone relative to the dental crypt › indiandentalacademy › adhesion-in-dentistry https: //www.slideshare.net › ›! Late 1970s were really rather ineffective navegar o site, you agree to the crypt... Provide you with relevant advertising se você continuar a utilizar o site you! E dados de atividades no LinkedIn para personalizar e exibir anúncios mais relevantes of one substance and molecules another!

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