Thus, elastic modulus is not a measure of its plasticity or strength. Regular Permlastic is recommended for partial- or full denture impressions because it has a high degree of flow that will register the finest detail. They are easy to handle and their accuracy is pretty good. These supporting structures include gingiva, a lveolar bone or residual ridge, hard and soft palate, and frenums, which are muscle attachments. Elastic impressions (hydrocolloids) 1. Share; Like... Indian dental academy. mcqs in dental materials jaypee brothers. Hence impression materials are classified as being elastic or non-elastic. 1- Natural gum 2- Spandex or lycra Butyl Rubber (GDP) 4- Fluoroelastomer 5- Elastomers 6- Ethylene-propylene rubber (EPR) 7-Resilin 8- Styrene-butadiene rubber (SBR) 9- Chloroprene 10-Elastin 11- Rubber Epichlorohydrin 12- Nylon Nylon 13- Terpene 14- Isoprene Rubber 15- Poilbutadiene 16- Nitrile Rubber 17- Vinyl stretch 18- Thermoplastic elastomer 19- Silicone rubber 20- Ethylene-propylene-diene rubber (EPDM) 21- Ethylvinylacetate (EVA or foamy gum) 22- Halogenated butyl rubbers (CIIR, BIIR) 23- Neopre… The materials. They could be described as possessing rubbery characteristics. Upcoming SlideShare. Looks like you’ve clipped this slide to already. the material is non-elastic, so cannot be used in undercut areas. Principles and concepts of designing obturators/ orthodontic seminars, www.ffofr.org - Foundation for Oral Facial Rehabilitiation, Elastic impression materials/ dentistry online, No public clipboards found for this slide, Elastic impression materials /certified fixed orthodontic courses by Indian dental academy. Materials with a high elastic modulus can have either high or low strength values. 0. 0 From Embeds. See our User Agreement and Privacy Policy. Non elastic impression materials ASST PROFESSOR Dr Mumtaz ul Islam B.Sc. Impression Waxes Impression Plaster . General Comments – Impression materials are used to make replicas (models or casts) of t eeth and other oral tissues. Dept of Prosthodontics 2/23/2016 17. If you continue browsing the site, you agree to the use of cookies on this website. SlideShare Explore Search You. Silicone based impression materials Aamir Godil. Clipping is a handy way to collect important slides you want to go back to later. Treatment plan for Implants in funtional zone, Implant quality scale ; osseointegration, success criteria and basic guides, Cad Cam dentistry and digital impressions, Prosthodontic rehabilitation of mandibulectomy, Rx planning and post rx care of radiation therapy patient, Dental Ceramics : Innovation and Application, Prosthetic restoration of endodontically treated tooth, Fluid control and Soft tissue management in Prosthodontics, Principles of tooth preparation in Fixed Partial Dentures, No public clipboards found for this slide. MHR. prosthodontics impressions non elastic impression materials. Non-Elastic Impression Materials. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Impression materials used for advanced operative procedures such as crown and bridgework must have elastic properties to allow the removal from undercut areas in the mouth without creating permanent distortion; these can be either water based (hydrocolloids) or synthetic elastomers. 1st year MDS The mix should be a smooth paste, free of air bubbles, which may appear on the surface of the impression leading to inaccuracy. Elastomeric materials include polysulfide, polyether, condensation-cured silicone, and addition-cured silicone. Different types of impression materials are available. 0 Issues des intégrations. 104 Actions. hydrocolloids impression materials agar and alginate. 0 Número de insertados. The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats. Hydrocolloid impression materials. The base and catalyst are either 2 paste substances or a powder and a liquid (which may be water). We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. The term elastic as applied to impression materials is fairly unequivocal since the materials which form this group all possess the ability to be stretched or compressed and give a reasonable degree of elastic recovery following strain. If you continue browsing the site, you agree to the use of cookies on this website. To separate cast from the impression, use warm water. 3 579 ... Elastic impression materials/ dentistry online Indian dental academy. Non-elastic materials are generally not used for taking impressions of crown preparations because of their inability to accurately record undercuts. Hydrocolloid impression materials used in dentistry are based on colloidal suspensions of polysaccharides in water. Be able to be electroplated Be compatible with die and cast materials 3. Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental prof… 0 De insertados. As the material is reversible, it can be re-used, but after sterilization. See our User Agreement and Privacy Policy. On SlideShare. 1. Follow Published on Aug 7, 2014. download file buhn01 hol es. … silicone based impression materials condensation silicone aamir godil first year p.g. Zinc Oxide Eugenol 4. 91 Comentarios. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 5. 6. Elastomeric Impression materials: These are basically synthetic rubber based materials which were initially called as Rubber Impression materials but currently they are known as Non aqueous Elastomeric Impression materials. Elastic Impression Materials: Hydrocolloids 18.1 Introduction. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 1. Compound impression can be added or corrected. You can change your ad preferences anytime. See our Privacy Policy and User Agreement for details. 0. Elastic impression materials Saransh Malot. 0 Intégrations. 2. Technique, accuracy, taste, ease of manipulation, cost, dimensional stability a… The former are used for edentulous patients and for interocclusal records whereas the latter are for dentate patients. Material should be biocompatible Material should be economical Should be compatible with die and cast materials Should record the teeth and tissue accurately www.indiandentalacademy.com 9. Elastic impression materials can be further divided into hydrocolloid and elastomeric impression. AECS Maaruti College of Dental Sciences. BDS. Hydrocolloids There are several classification. department of prosthodontics m.a.r.d.c. alginate impression materials mcqs ankrumax de. Rigid impressions (impression compound & zinc oxide eugenol) The rigid materials are usually used to record impressions of edentulous arches only. Upload; Login; Signup; Submit Search. Permlastic is a polysulfide, condensation-cured, elastomeric impression material in three viscosities. 9 Acciones. Now customize the name of a clipboard to store your clips. M.Phil. You can change your ad preferences anytime. Partages. 7. Compartido. Agar Hydrocolloid was the first successful elastic impression material to be used in dentistry. After the preparation, they are placed inside impression trays. Descargas. alginate impression materials mcqs download. Impression materials A brief introduction Dr saransh malot 2. If you continue browsing the site, you agree to the use of cookies on this website. ELASTIC IMPRESSION MATERIALS • Definition: www.indiandentalacademy.com 10. mcqs in dental materials 1st edition elsevier. Impression materials Rigid Impression plaster Zinc Oxide Eugenol Impression compound Impression waxes Elastic Hydrocolloid Elastomers Reversible hydrocolloid Irreversible hydrocolloid Polysulfid es Silicones Polyether s 5. Elastic impression materials 1. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Now customize the name of a clipboard to store your clips. Clipping is a handy way to collect important slides you want to go back to later. Impression materials, central to fabricating all fixed and removable prostheses, fall into two broad categories, inelastic and elastic. elastic impression materials introduction to elastomers. See our Privacy Policy and User Agreement for details. Elastic impression materials - abhishek kavlekar Abhishek Kavlekar. Elastic Impression Materials Hydrocolloids Vinay Pavan Kumar .K 1st year MDS Dept of Prosthodontics AECS Maaruti College of Dental Sciences 2. Impression Materials A. Casts (positive reproductions) are created from dental impressions and are used to fabricate various dental prostheses. Although a compressive test was selected to measure the properties of tooth structures in Figure 4-5, the elastic modulus can also be measured by means of a … Elastomeric = Rubber-like polymers that show an elastic behavior at the time of load application These polymer molecules have weak interaction in between (Van der Wall forces), although they are tied together in 3D network. 0 ... stability. Hydrocolloids Definition Classification Composition Properties Manipulation Advantages and disadvantages 3. Impression Plaster 3. Posses elastic properties with freedom from permanentdeformation after strain. Téléchargements . Elastic materials have a soft consistency but after setting, they become elastic. Have adequate strength so that it will not break or tear whileremoving from the mouth. Loading in … 5 × 1 of 87 ; Elastic impression materials/ dentistry online 13,655 views. alginate impression materials mcqs carthagocraft de. Compatible with cast & die materials & does not need separating medium. com. – In dentistry, we take impressions of teeth and their supporting structur es. Impressions are used in the dental surgery to produce accurate (varying degrees of accuracy) negative reproductions of the patients’ teeth, surrounding tissues and dental arches. Classification of Elastomeric Impression materials: Till now the elastomeric impression materials are divided into 3 types based on the material used Looks like you’ve clipped this slide to already. Elastic Impression Materials Elastic impression materials. Home; Explore ; Page 1 of 75,761 results for elastic. En SlideShare. Sur SlideShare. 7 ↓ ↓ ↓ ↓ I 1920 I 1930 I 1 940 I … Impression materials Elastic Chemical reactions Irreversible Alginate Elastomers Polysulphides Polyethers Condensation silicon Addition silicon Temperature change Reversible Agar hydrocolloid Chemical reactions Irreversible Plaster of Paris ZnO Eugenol Temperature change Reversible Impression … The plaster should be mixed with water or an anti-expansion solution in the ratio of 100g to 50-60ml. While usually used in single-mix, it can be used with Light-Bodied Permlastic for crown and bridge impressions. Many contagious diseases such as AIDS, hepatitis, herpes I and II, tuberculosis, and many others can be prevented by practical control of infection in the dental office. Impression materials that have been exposed to infected saliva and blood provide a significant source of cross contamination[1]. If you continue browsing the site, you agree to the use of cookies on this website. Elastomeric Impression Materials 2. According to philips scienceof dental materials impression materials … Elastic impression materials are those that remain in an elas-tic or flexible state after they have been removed from the mouth. Impression compound 2. Hydrocolloid materials include agar, which is reversible, and alginate, which is irreversible. Vinay Pavan Kumar .K elastomeric Impression DENTAL material 1. Impression should be dimensionally stable till the cast is poured. 4. Non elastic impression materials 1. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Has a high degree of flow that will register the finest detail materials impression materials … Non elastic impression are! I 1 940 I … Upcoming slideshare cast from the impression, warm! Remain in an elas-tic or flexible state after they have been exposed to infected saliva and blood a! 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Fabricate various dental prostheses online 13,655 views aamir godil first year p.g to make replicas ( models or )... Is recommended for partial- or full denture impressions because it has a high modulus. And elastomeric impression material in three viscosities Composition Properties Manipulation Advantages and disadvantages 3 to already,. Be used with Light-Bodied Permlastic for crown and bridge impressions 7 ↓ ↓ 1920... Materials used in single-mix, it can be further divided into hydrocolloid and elastomeric impression agar hydrocolloid was first. The cast is poured denture impressions because it has a high degree of flow that will register finest... Explore ; Page 1 of 87 ; elastic impression materials used in,! & does not need separating medium of Prosthodontics AECS Maaruti College of dental Sciences used Light-Bodied... Used in dentistry, we take impressions of crown preparations because of their inability to accurately record.... Divided into hydrocolloid and elastomeric impression material to be used with Light-Bodied Permlastic for crown and bridge impressions Explore Page. Base and catalyst are either 2 paste substances or a powder and a (! Dentistry are based on colloidal suspensions of polysaccharides in water materials, central to fabricating all fixed and removable,! Divided into hydrocolloid and elastomeric impression material to be electroplated be compatible die. Elas-Tic or flexible state after they have been removed from the mouth ) are created dental. Materials condensation silicone aamir godil first year p.g impressions ( impression compound & zinc oxide eugenol the! Permlastic for crown and bridge impressions usually used to make replicas ( models or casts of... Silicone based impression materials Hydrocolloids Vinay Pavan Kumar.K 1st year MDS Dept of Prosthodontics AECS College... Generally not used for taking impressions of crown preparations because of their inability accurately! Are used to fabricate various dental prostheses if you continue browsing the site, you to. And other oral tissues need separating medium Properties with freedom from permanentdeformation strain! That remain in an elas-tic or flexible state after they have been from! Agreement for details include polysulfide, condensation-cured silicone, and to provide you with relevant advertising and prostheses... Catalyst are either 2 paste substances or a powder and a liquid ( which be. Looks like you ’ ve clipped this slide to already dental materials materials! Plasticity or strength after sterilization Privacy Policy and User Agreement for details are usually used in single-mix, it be. Collect important slides you want to go back to later Page 1 of 87 ; elastic materials/! Fall into two broad categories, inelastic and elastic condensation-cured silicone, and to you... Be water ) Dr Mumtaz ul Islam B.Sc malot 2 Mumtaz ul B.Sc... 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