Sign in Register; Hide. Study Flashcards On Dental Materials Impression Materials FINAL at Cram.com. Impression materials that have mechanical properties permitting considerable elastic deformation but that return to their original form are classified as: A. Thermoplastic . Impression Compound (Inelastic or Rigid Impression Material) Zinc Oxide–Eugenol Impression Material (Inelastic or Rigid Impression Material) Alginate: Irreversible Hydrocolloid (Hydrocolloid) Gypsum Products; Model Plaster; Dental Stone; High-Strength Stone (Improved Stone) Dental Waxes: Pattern and Processing Waxes ; Inlay Wax (Pattern Wax) Casting Wax (Pattern Wax) Baseplate Wax … 2017/2018. Flowable (%) (%) (%) (%) … a. polysulfide. 20 Complete denture bases—acrylic resin 44. Elastic. D. Resins. CCS RULES. Reversible hydrocolloid (agar) Agar-agar is an organic colloid obtained from the cell wall of red seaweed. - Not all impression materials have sufficient accuracy for crown and bridge impressions. d. additional silicone. Components of Dental Materials - The SMART Choice Dental Cements, bonding materials and impression materials are used in miscellaneous dental procedures.Dental cements are used for filling cavities or anchoring crowns, inlays, or other restorations. Course. save Save Inelastic Impression Material For Later. 17 Porcelain bonding alloys 38. 2 0. 233575165-PEGASUS-Instrction-Manual-M800.pdf. Historical Dental Materials Appendix A: Conversion Tables Appendix B: Commonly Used Trade Materials Index. 20, 20 . 22 Denture fracture … Elasticity- Elastic impression materials are used in patients with deep undercuts as it must be flexible enough to reach the end-point of the undercut. An impression material is classified according to specific properties. While measuring the water, you got involved in conversation and did not notice how warm ir was. 001223753-0. Impression materials that have mechanical properties permitting considerable elastic deformation but that return to their original form are classified as: A. Thermoplastic . 15 Precious metal alloys 34. Related titles. - Inelastic impression materials set hard and rigid compared with elastic impression materials and would “lock” around teeth if used on a dentulous patient. Abrasion, Finishing, and Polishing Materials 13. Alginate impression material is: A. impression materials what is an impression material and what does it do? The two types of material are inelastic and elastic. The popularity of agar impression material is limited by the: A) high cost . Expensive compared to other impression materials B. (B) Accuracy - The accuracy required by the restoration or prosthesis determines which impression materials can be used. maxillofacial surgery. Lowest viscosity and so one of the least … Impression materials that have mechanical properties permitting considerable elastic deformation but that return to their original form are classified as: A. thermoplastic B. elastomeric C. inelastic D. resins : B. elastomeric: Dr. Jones requested that you mix alginate and take an impression. Download Now. You are on page 1 of 81. Custom trays recommended for impression making to reduce quantity of material and hence dimensional changes. Chemical reactions Temperature change Irreversible Reversible Chemical reactions Alginate Agar hydrocolloid Irreversible Elastomers Plaster of Paris Polysulphides ZnO Eugenol Polyethers Condensation silicon Addition silicon . These were replaced by elastic impression materials such as aqueous materials (agar, alginate) and nonaqueous elastomers (polysulfides, silicones, and polyethers) (Figure 2-33). 13 Elastic impression materials 30. : 136–137 Rigidity- Inelastic (rigid) impression materials are used with patients with shallow undercuts. Jump to Page . Temperature change Reversible Impression compound Waxes ELASTIC Material susceptible to being stretched … Plaster, impression compound, zinc-oxide–eugenol, and other materials were originally developed as inelastic impression materials. Inelastic impression materials include impression waxes, impression compound, impression plaster, and metallic oxide pastes. which of the following is and example of an inelastic impression material? Dr Jones requested that you mix alginate and take an impression. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. higher water/powder ratio set in mouth, taken out in pieces and glued back together: what are the characteristics of inelastic impression wax? Inelastic impression materials 9.3.1. 14 Occlusal (bite) registration materials 32. It is made from seaweed and is made with components like Sodium alginate, Calcium sulfate and other ingredients which act as retarders. B. Elastometric. Inelastic impression materials when handled properly provide an advantage when used with edentulous ridges, as they don’t exert pressure that might deform the soft tissue for complete denture therapy.23 POLYVINYL SILOXANE IMPRESSION MATERIALS (PVSs) PVS is an elastomeric impression material that is available in extra light, light, 27. and . 12 Inelastic impression materials 28. Impression is a negative image of the hard and soft tissues of the prosthetic bed and its borders obtained by using special materials. Impression Materials: Elastomers, Inelastic/Rigid Impression Materials, and Hydrocolloids 10. With drawl without permanent distortion C. Close adaptation to soft tissues D. Compatibility with gypsum products. Impression compound B. Agar-agar C. Alginate D. Polyether. Rigidity- Inelastic (rigid) impression materials are used with patients with shallow undercuts. Share. Specialty Materials 14. List the Inelastic Impression materials? The term used for the setting of hydrocolloid impression materials is: gelatin. Gypsum Materials 11. impression is an impression a negative or positive reproduction? Print. the term used for the setting of hydrocolloid impression materials is? # Inelastic impression material is: A. Impression plaster Impression and tray compound Zinc Oxide Eugenol (ZOE) metallic oxide paste is an accurate detailed negative reproduction or mold of the patients teeth and surrounding tissues of the mouth? c. alginate. 16 Base metal alloys 36. dental impression is negative imprint of hard (teeth) and soft tissues in the mouth. Quickly memorize the terms, phrases and much more. 钱钟书《吃饭》 生成數列. Comments. Varieties of natural waxes and resins have been utilized in dentistry for defined applications. Waxes refer to thermoplastic materials solidifying at ambient temperature and being molten without decomposition, which consist of two or more ingredients for the construction of nonmetallic denture bases (Powers and Craig, 1978). Definition. Introduction to Dental Science 2 (DS1002:03) Academic year. These two properties are essential because patients have varying soft-tissue undercuts (shallow or deep undercuts). James Cook University. Cram.com makes it easy to get the grade you want! wax with added fillers, more brittle but flows mud less when compared to wax: what are the characteristics of inelastic impression plaster? Impression materials. Elastic materials chiefly exhibit the following two properties, which together are necessary and sufficient for the material's elasticity: * They deform in proportion to the force applied. Plastic impression materials. the term used for the setting of hydrocolloid impression materials is: gelation. Impression Materials - Lecture note 1. Before considering these materials, we shall define concept "plasticity" and "elasticity". One of the most important advantages of truly elastic impression material would be its capacity for_____? Silicone impression materials. ZOE impression paste. Which of the following s an example of an inelastic impression material? 21 Modifi ed acrylics and other denture base resins 46 . Definition. Impression materials are selected because of their unique qualities that allow dentists to obtain the most accurate reproduction. Impression wax. Dental Waxes: Pattern and Processing Waxes 12. It is fundamentally a hydrophilic, emulsoid polysaccharide. Carousel Previous Carousel Next. Alginate Impression material is an Elastic, Irreversible Impression material which is used to take the impression of both Dentulous and Edentulous Impressions. the impression material can be seated in the mouth without its distorsion Setting time –a period from the start of mixing till the impression becomes elastic enough to resist deformations during its withdrawal from the mouth 2019. Helpful? gelation: Term . Easy to use C. Not affected by gain or loss of water D. Well known for its long -term stability 2. Impression compound … 3. A. the popularity of agar impression materials is limited by what? Share. The popularity of agar impression material is limited by the: need for special equipment. Lastly, we come to the inelastic impression materials – due to this limited use in operative dentistry, we shall have a brief overview of those: 1. D) difficulty in pouring the impression. b.Zoe impression paste. Rigid / Inelastic. Solution Use very fluid, light body elastomeric impression materials ELASTOMERIC IMPRESSION MATERIALS a) Polysulfide, byproduct water. Dr Jones requested that you mix alginate and take an impression. A. Reproduction of surface details B. University. B) Need for special equipment. Thermoplastic impression materials. 18 Implant metals 40. Authors. Impression Materials. 3. C. Inelastic. materials used in dentistry and their manipulation Nov 12, 2020 Posted By Janet Dailey Publishing TEXT ID 550d0c9b Online PDF Ebook Epub Library materials and epoxy materials this chapter focuses primarily on the gypsum materials because they are by far the most common however epoxy materials … Inelastic material is rigid and will fracture when … be used edentulous impressions may use elastic or inelastic impression materials inelastic impression materials set hard and rigid compared with elastic impression materials and would lock around teeth if used on a dentulous patient manipulation dental materials properties manipulation craig 8th edition by john m powers phd author john c wataha dmd phd author robert craig phd author 0 … ZOE impression paste. Definition. While measuring the water, you did not notice how warm it was. 19 Partial denture base materials 42. C) poor reproduction of detail . Inelastic impression material is_____? While measuring the water, you got involved in conversation and did not notice how warm ir was. what are the characteristics of inelastic impression material? Disadv Are inelastic, cannot be removed past undercuts without fracturing or distorting. Mechanical property-Indicates the flexibility of a material. ZOE is inelastic: Term. Search inside … which of the following is an example of an inelastic impression material? MCQs on Dental Materials - Impression Materials ; Practice these most frequently asked questions to ace your board exams and all competitive exams. This … Impression material (Inelastic) Quiz 2 Sample Cards: inelastic impression plaster has litt..., when salivation is excessive you use ..., inelastic impression materials used f... 22 Cards Preview Flashcards Impression Material Elastic Quiz 2. B. Elastometric. C. Inelastic. D. Resins. B) need for special equipment . SAUNDERS and Kimberly G. … Impression compound B. Alginate C. Agar-agar D. Polyether # Syneresis is associated with : A. Hydrocolloids B. Elastomers C. Zinc oxide eugenol D. Plaster of Paris # Material causing minimum tissue distortion is : A. Polysulphide B. Silicone C. Impression plaster D. Zinc oxide eugenol paste # The advantage of ZOE impression paste : A. When an agar impression slightly contracts and exudes water, it is termed: syneresis. 0 0 upvotes, Mark this document as useful 0 0 downvotes, Mark this document as not useful Embed. Inelastic ( rigid ) impression materials are used with patients with shallow undercuts not useful Embed easy to Use not! Is limited by what silicon Addition silicon the: a ) Polysulfide, byproduct water hydrocolloid Irreversible Elastomers of! Or loss of water D. Well known for its long -term stability 2. maxillofacial surgery undercuts as it must flexible!: Commonly used Trade materials Index: A. Thermoplastic its capacity for_____ of hard ( teeth ) and soft of! 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