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DEN200
Chapter 43 & 44
| Question | Answer |
|---|---|
| A temporary restorative material should be selected to restore a tooth that has | Sensitivity |
| All of the following are steps in finishing a composite restoration except | burnisher |
| the terms restorative describes the ability to | remove disease and restore function |
| which of the following correctly lists the different restorative materials from weak to strong | composite resin, silver amalgam, gold alloy |
| all of the following are advantages of amalgam over composite as a restorative material except | esthetics |
| The purpose of packing the amalgam in the cavity preparation is to ______ it. | condense |
| Intermediate restorative material (IRM) is a | Zinc oxide-eugenol cement |
| materials used to restore posterior teeth must be capable of withstanding ____ Psi | 28,000 |
| what is the process by which the resin is changed from a pliable state into a hardened restoration. | Polymerization |
| pushing two objects against each other with an axis of rotation is an example of ______ stress. | shear |
| which of the following typers of composite resins is most often used today | hybrid |
| Ideally, composite resin shades should be chosen in | daylight |
| the resin matrix component of composite is dimethacrylate, a fluid-like material also referred to as BIS-GMA | true |
| Light-cured composite resin materials are supplied in all of the following ways except which one of the following | light-cured composite resin materials require mixing |
| before they can be marketed, new dental materials must undergo strict evaluation by the | ADA |
| In most states, expanded-functions dental assistant duties include | placing IRM and applying a provisional restoration |
| The ADA and the National Institue of Health-Nations Administration _____ the use of amalgam as a posterior restorative | supports |
| All of the following are true statements about in-office tooth whitening except | requires multiple treatments |
| Varnish should be placed on the _____ of the preparation. | walls, floor and margins |
| Desensitizer should be placed | after rinsing and lightly drying the tooth |
| Patients may feel sensitivity after the placement of a restoration | at any time |
| You are asked to select a protective base 4 insulation that is nonirritating under a composite restoration which one is best | polycarboxylate |
| A dental liner is placed | in the deepest area of the tooth preparation |
| etchant removes the smear layer in preparation for bonding | true |
| how long is the etchant material applied to the tooth being prepared for used of a bonding material | 15-20 seconds |
| etching for dental bonding is done with | phosphoric acid |
| Insulating base material should cover the entire ____ to a thickness of ____ mm. | pulpal floor 1 to 2 |
| Bonding agents or adhesives | can be light cured must be used after etching available as self cured (all of the above) |
| types of pupal stimuli can be | physical mechanical chemical or biologic |
| An example of enamel bonding is the placement of a | dental sealant |
| which of the following would be the material of choice as an insulating base under a composite restoration? | glass ionomer |
| An example of biological pulpal stimulus is | bacteria from saliva coming into contact with pulpal tissues |
| The dental restorations created in the laboratory by the dental laboratory technician are classified as ______ restorations | Indirect |
| _____ is added to dental amalgam alloy powder for strength | copper |
| A 1-1 mercury-to-alloy ratio is known as the | Eames technique |
| which of the following is an advantage to using glass ionomer as a restorative material? | Glass ionomer releases fluoride after their final setting |
| glass ionomer can be used for class ____ restorations | V |
| ____ is added to dental amalgam alloy powder for strength. | silver |
| The silver filling material used for more than 150 years to restore primary and permanent teeth is called | amalgam |
| A liquid with high viscosity ____ flow easily and ____ effective in wetting a surface. | does not; is not |
| A(n) ____ is defined as a mixture of two or more metals. | alloy |
| In most states, expanded-functions dental assistant duties include: | placing IRM |
| One of the fastest and most cost-effective ways to restoring the esthetic appearance of teeth is: | Bleaching |
| A noble metal used for cast restorations in dentistry is | palladium |
| The type of ceramic most often used in dentistry for castings is: | porcelain |
| which restorative materials are not esthetically pleasing? | Amalgam |
| Pushing two objects against each other with an axis of rotation is an example of _____ stress. | shear |
| stretching a rubber band is an example of which of the following type of stress? | tensile |
| which is NOT true of microleakage? | it occurs rarely |
| ____ occurs when a metal restoration is touched by a fork | galvanic action |
| Corrosion of metal restorative materials: | is a reaction that occurs when metal is exposed to products such as temperature humidity and saline |
| For adhesion to take place, ____ film thickness is desired. | a thin |
| The process of setting of a material is correctly referred to as: | curing |
| The curing process in which it is the most critical that the materials are mixed and placed within the working and setting times is with: | auto-cured materials |
| To ensure an accurate ratio of alloy and mercury, the best protocol to follow is to: | use premeasured capsules |
| Single-spill capsules of dental amalgam: | should be discarded immediately after use |
| A properly triturated amalgam mix should: | be a soft, pliable mass |
| Mixing alloy and mercury together to form a mass is called: | Amalgamation and trituration |
| The instrument used to smooth the amalgam surface is: | a burnisher |
| To adjust the occlusion on a recently place amalgam, the patient should be instructed to bite _____ on the articulating paper. | lightly |
| One difference in the cavity preparation of amalgam versus composite is that: | composites require the use of a bonding system |
| The curing time of composite restorations is not influenced by the: | type of base used under the restoration |
| The addition of _____ alloy to glass ionomers produces a product that can be used for core buildups and the repair of fractured cusps and amalgam fillings as well as abutments for overdentures | silver-tin |
| A porcelain casting is chosen over metal castings because of each of the following except that it | has a high thermal coefficient of expansion |
| Retention holds a material in place and seals the structures together. | false |
| Dental restorative materials that are applied, while pliable, to a tooth or teeth and can be adapted, carved, and finished are classified as | direct restorations |
| A porcelain casting is chosen over mental casting is chosen over metal castings because of each of the following except that it | has the ability to match the color of natural tooth structure |
Created by:
Krijar1165