High-strength stone is often referred to as Type IV stone, die stone, densite, and modified alpha-hemihydrate. Cram.com makes it easy to get the grade you want! Plaster (weakest)--> Stone --> Hi-Strength Stone --> Hi-Strength Hi-Expansion Stone (strongest), Variations In Setting Times: Retarders/ Accelerators, Increases Setting Time (slower setting product) - Retarders-borax, blood, saliva. Prenez votre apprentissage au prochain niveau. Metallurgy Mcqs: 4. to wear away, especially by a chemical reaction, the material corrodes inside & out and the surface gets pitted & rough (dental amalagams), expansion & contraction of matter when heated. To prevent caries by providing a protective coat over the occlusal surfaces of posterior teeth . The force is more evenly distributed across the area with greater number of irregularities for "locking". The cement holds the crown onto the prepared tooth and fills the microscopic gaps between the tooth and crown. soft pliable wax with smooth shiny appearance . 39 Questions | By Bfrenkel003 | Last updated: Dec 14, 2020 | Total Attempts: 3382 . What are the different kinds of athletic mouthguards? The principal aim of Dental Materials is to promote rapid communication of scientific information between academia, industry, and the dental practitioner. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Jouer Dental Materials - Exam 1 - Part 2 (Chapter 3) The energy absorbed up to the failure point on the stress-strain diagram is the _____ of the material. Gypsum is ideally mixed with room temperature water (70-72 degrees Fahrenheit) An increase in temperature will accelerate the setting time up to 100 degrees Fahrenheit (decreases setting time). Dental Materials Test 2 Big Questions. Dental Materials Test 2 My Study Guide. STUDY. Gain FDA approval after being shown to be equivalent to products currently in use (amalgam, composites), Most regulated, require premarket approval & clinical data (bone graft materials), Amount of material that dissolves in a liquid, Tensile Strength: Coefficent of Thermal Expansion, Measure of the change in volume in relationship to temperature, Pressure applied away or in opposite directions, Change in shape & return to the original shape, Stress = Load/ Area (measured in psi/pascals). Terms in this set (207) What is Boxing wax used for. The dental specialist who prepares and uses many of these materials in assisting the dental officer must know their composition, properties, uses, and manipulation. - Nov Edition Flashcard Maker: Diewitt Duong. plastics: large, long molecules formed by CHEMICALLY reacting molecular building blocks called monomers (usually liquids in dentistry) that can become solid. 8. Dental Cements Mcqs: 2. robyn_shafer. Study Restorative and Esthetic Dental Materials Flashcards at ProProfs - Ashley Keen is a huge douchebag. When pouring gypsum: Study Model Fabrication. What retarder is used to increase setting time of gypsum? Sequential Easy First Hard First. Biocompatibility of Dental Materials 73. About gypsum materials and periodontal dressings. of MCQs 45 One mark for each MCQ Note: THE FINAL PAPER WILL BE SIMILAR TO THE MODEL PAPER BUT WILL FOLLOW “TOS” EXACTLY. white Christmas tree stones & enhancement cups at slow speed. What is a preventative resin restoration? Bonding 178. After a crown has been made, it must be held in place, or luted, to the prepared tooth. Select the correct answer(s). Thermoplastic materials will ____ on heating and ____ on cooling. Manufacturers usually send a MSDS with products that meet the OSHA definition of a hazardous material. Gypsum Products: the process of heating gypsum - and the end results: The heating process of gypsum is called calcining to remove water from gypsum. b. PREVENTS passage of electricity, heat or sound thru an object. 11 Dental impression materials. Cards In This Set. Restorative Resins 195. Positive reproduction (on which a restoration or appliance is fabricated), Used for fabricating wax patterns of cast restorations (different die colors). The proper water/powder ratio for each product depends on the physical characteristics of the powder particles. The dense particles of stone require less gauging water to float them, and their regular shape allows them to roll over one another more easily. YEAR. Luting is the same as gluing two objects together, and it is also called cementing. An exam can be given to a new patient who recently had a complete exam at another Dental Office. DENTAL MATERIALS MCQS; 1. Dental Materials Exam 2. Questions. Regular dental exams are a critical part of preventive health care.During a dental exam, the dentist or hygienist will clean your teeth and check for cavities and gum disease. 15 Introduction to four-handed dentistry. Cards In This Set. 16. Dental Anatomy, Embryology and Oral Histology: 2009-2016. Gravity. Most regulated, require premarket approval & clinical data (bone graft materials) Tensile Strength: Density . a. Tooth enamel. Recommended : 2 revolutions per second for 1 minute. Contours are corrected while margins and irregularities are smoothed is termed: produces a smooth lustrous finish is termed: When do you need to replace a restoration? Mechanical property that is the ratio of the strain in the direction of the stress to the strain in a direction perpendicular to the stress. Created by. Nursing. This is usually accomplished with a dental vibrator. Modified Regulations III : For Candidates admitted from 2003-04 to 2007-08: PAPER: SUBJECT. Does micro or macro filled composite have more filler? Write. Dental Materials is a course that provides an introduction to dental materials in the oral environment. Electric current transmitted between two dissimilar metals. These exams are important for protecting oral health. Study Flashcards On Dental Materials Exam 1 at Cram.com. Inhibitors for addition polymerization are.... What is the coupling agent that binds filler to resin? Dec 26, 2014 - Dental boards study materials! Quickly memorize the terms, phrases and much more. Human Physiology and Biochemistry 1990-2000. Human Anatomy, Histology and Embryology 1990-2000 2001-2014 Paper II. SCIENCE OF DENTAL MATERIALS MODEL PAPER (MCQs) Marks: 45 Time: 45 minutes Total No. G.V. More Dental Material Quizzes. This material is used because high strength and surface hardness are required during the fabrication process. Dental Cements 207. Gypsum Products 113. 7. Luting agents are frequently called dental cements. Dental Materials Test 2 Big Questions. 1.Fluoride custom trays are recommended for which of the following patients? 15. Why? Jurisprudence & Scope of Practice Acts for the dental hygienist. Color of teeth is determined by the way they reflect light. slow decrease in force (stress), over time. Index. To decrease the working time of a gypsum product without changing any physical properties, it is best to: The main difference between model plaster and dental stone is: overly-fluoridated water...must be swallowed BEFORE ERUPTION OF teeth (developing). Dental Amalgam 248. A dental exam is a checkup of your teeth and gums. This galvanic shock is the result of electricity flowing from the fork to the amalgam and through the pulp. The ability to absorb moisture, there is a stauration point for the tooth (staining of resins and acrylics from repeated exposure to tea, coffee, dyed beverages - due to water sorption), Biomechanics or human factor engeneering, best way for a person to perform a task, Ability of Liquid Flow: Strength & Hardness, Ability of Liquid Flow: Dimensional Accuracy, Setting expansion occurs during hte hardening of all gypsum products (PLASTER EXPANDS MOST), Ability of Liquid Flow: Reproduction of Detail, The compatibility of the impression material will influence the quality of the surface of reproduction (hi-strength has most detail --> less bubbles), The weight of the material dissolved into the water is the solubility of that material. Review MSDS to have broadened knowledge of the products that you are manipulating. Oral health problems can become serious and painful if not treated promptly. Plaster requires more gauging water (water measured) to wet the powder surfaces, fill the pores, and float the irregular porous particles. Occasionally, a new amalgam filling will hurt when it is touched with a metal fork. She hates children and adopts animals from the SPCA only to re release them in dark alleys hoping they starve to death. STUDY. High-strength stone, because of its very dense and cuboidal type of particle as well as modifications made by the manufacturer, requires even less gauging water than stone. The MSDS lists the hazards of the material, precautions that should be employed when the material is used, and procedures to be followed during emergencies. Feedback. Some use vibrator to help mixing + get air bubbles to surface --> looking for sour cream consistency. Learn. Start studying Dental Materials Exam #2. Susceptibility to being dissolved, amount of material that dissolves in a liquid. formation of free radicals, reaction of monomers and free radicals. 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