Chapter 43 Which Professional Organization Evaluates a New Dental Material

Chapter 43 Which professional organization evaluates a new dental material? C. ADA What type of reaction does a dental material undergo when a person is chewing? B. Compressive stress What happens to a dental material when it is exposed to extreme temperatures of hot and then cold? A. Contraction and expansion Which is an example of how galvanic action can occur? D. A. Salt within saliva, C. Touching of two metals How does an auto-cured material harden or set? B. By chemical reaction Select the correct makeup of the alloy powder in amalgam? D. Silver, tin, copper and zinc Why is dental amalgam not placed in anterior teeth? A. Esthetics Most amalgams have high copper content. What does copper provide to amalgam reactions? D. A. Strength, C. Corrosion resistance Where are amalgam scraps disposed of? C. In an air tight container What is used to triturate capsulated dental materials? B. Amalgamator The term commonly used refer to dimethacrylate is? D. BIS-GMA Which filler type of composite resin has the strongest makeup and has been used most commonly for posterior restoration? A. Macrofilled In light-curing of composite resins, which factor can affect curing time of the material? B. Depth or extent of restoration What is used to determine the color of composite resin material for a procedure? C. Shade guide The final step in finishing a composite resin is ________? C. Use of a rubber cup and polishing paste The acronym IRM stands for? B. Intermediate restorative material What temporary restorative material would be selected for a class II cavity preparation? D. IRM Which material would be selected for the fabrication of provisional coverage? B. Acrylic resin The three noble metals used in making indirect restoration are ________. A. Gold, palladium and platinum What type of restoration is always made in a dental laboratory setting? C. Indirect restoration Chapter 44 The purpose of a dental liner is to________? B. Protect the pulp from any type of irritation Calcium hydroxide is placed on what tooth structure? C. Dentin Which statement is not one of calcium hydroxide’s characteristics? D. Replaces the need for a dentin sealer The key ingredient in varnish is ________? A. Resin Which supplemental material is contraindicated under composite resins and glass ionomer restorations? D. Varnish Another name for dentin sealer is _________? B. Desensitizer What does dentin sealer seal? C. Dentin tubules An insulating base is placed to ___________? A. Protect the pulp from thermal shock What effect does eugenol have on the pulp? B. Smoothing A base is placed in or on the ________ in a cavity preparation. C. Condenser The purpose of a dental bonding material is to __________. B. Bond restorative materials to the tooth structures ______________ is/are (an) example(s) of an enamel bonding procedure? D. A. Orthodontic brackets, B. Sealants What is removed from tooth structure before a bonding material is placed on dentin? C. Smear layer Which sequence is recommended for the application of supplementary materials for a deep restoration? A. Liner, base, dentin sealer, bonding system Chapter 45 Another name used to describe permanent cement is ________. B. Luting agent For which of the following procedures would you include a temporary cement on the tray setup? D. Provisional coverage Which variable can affect the addiction or loss of water in a material. C. Humidity What type of zinc oxide-eugenol (ZOE) is used for permanent cementation? B. Type II On what type of mixing pad is ZOE mixed? A. Treated paper pad Temp bond is supplied as _________. C. Two tubes of paste The main component in the liquid of zinc phosphate is ___________. D. Phosphoric acid How do you dissipate the heat from zinc phosphate in the mixing process? B. Using a cool glass slab If the powder of a dental material is dispersed in increments, what size increments is commonly brought into the liquid first? A. Smallest How is the liquid portion of polycarboxylate cement supplied? D. B. Squeeze bottle, C. Calibrated syringe At the completion of the process for mixing polycarboxylate cement, the end product should appear_______? B. Glossy Can a glass ionomer material be used as a restorative material? A. Yes What is unique ingredient in the powder of glass ionomer cement help inhibit recurrent decay? D. Calcium Can a resin cement be used with a metal casting? A. Yes Chapter 46 An impression would be considered a __________. A. Negative reproduction Of the three classification of impressions, which of these could be an expanded function for the certified dental assistant? C. Bite and registration Which type of shock try would be selected and prepared to cover half of an arch? B. Quadrant Which type of impression tray allows the impression material to mechanically lock on? D. Perforated Which type of tray is constructed to fit the mouth of a specific patient? C. Custom __________ would be used to extend the length of a tray to accommodate 3rd molars. A. Utility wax The organic substance of hydrocolloid material is ________. C. Seaweed