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DM Final
| Question | Answer |
|---|---|
| Primer is more important for | Dentin |
| T or F: Primary enamel has a prism pattern that is not well structured | True |
| T or F: glass ionomer has a bacteriostatic fluoride release | True |
| Hypersensitivity can occur when ___ are irritated associated with composite resin restorations | odontoblasts |
| T or F: primary enamel is considered asprismatic | True |
| Which cements form a chemical bond to tooth structure | Zinc polycarboxylate and class ionomer |
| T or F: primary enamel is less resistant to deep resin tag formation | False |
| An advantage to placing a high strength base | Decrease thermal sensitivity |
| T or F: there is a higher risk of salivary contamination during etching for primary teeth | False |
| T or F: glass ionomer may re-mineralize tooth structure | True |
| Cements have ___ strength when compared with other restorative materials | Inferior |
| T or F: for composite placement, over drying during bonding can cause post op sensitivity | True |
| T or F: for composite placement, over etching and not sealed well with primer can cause post op sensitivity | True |
| T or F: for composite placement, not curing long enough can cause post op sensitivity | False |
| T or F: for composite placement, if resin increments are too large it can cause post op sensitivity | True |
| Microleakage occurs when | contaminants are not properly removed before and during bonding |
| T or F: glass ionomer has an anticariogenic effect | True |
| What are the steps used when mixing zinc phosphate cement to dissipate the heat produced by the reaction | mix over a large area, use a cool glass slab, add power to liquid in small increments |
| T or F: glass ionomer does not cause post operative sensitivity | False |
| Cements have ____ solubility when compared with other restorative materials | High |
| How long do you run the ultrasonic unit | 7-10 minutes |
| Which restoration is not a thermal conductor | Composite |
| What are types of biting forces | Compressive force, tensile strength, shearing force |
| Which restoration requires curing for final set | Composite |
| Who developed the classification for dental caries | Dr. G.V. Black |
| Which restoration requires more hand instruments for the procedure | Amalgam |
| T or F: a class V restoration involves the cusp tip of a posterior tooth | False |
| Which metal reduces oxidation of other metals in amalgam restorations | Zinc |
| Why do we need a thorough knowledge of dental materials | Promote proper care, need to answer questions, need to identify in the mouth and on x-rays |
| Which metal reduces corrosion in an amalgam restoration | Copper |
| Which material was developed first | Amalgam |
| T or F: a class III restoration involves the incisal edge of an anterior tooth | False |
| Which metal decreases creep but tarnishes easily in an amalgam restoration | Silver |
| Which restoration requires trituration to mix | Amalgam |
| Which metal is used to control the rate of set of the amalgam | Tin |
| Which restoration is easily shaped, polishable, and esthetic | Composite |
| Which restoration would be ideally polished after 24 hours | Amalgam |
| Which restoration requires the use of a shade guide | Composite |
| Which has a higher filler content by weight out of micro-filled and hybrid composite | Hybrid |
| What does copper in amalgam alloys do | Reduces corrosion |
| T or F: how long an amalgam restoration will last is related to the size of the restoration | True |
| What factors affect curing time | Shade, type of product, type of curing light |
| Microleakage can lead to | Recurrent decay and post op sensitivity |
| What is the measurement for depth of cure | 2mm |
| T or F: large filler particles in a composite = rougher surface | True |
| Fillers can be made up of | Soil |
| When condensing, do you use the smallest end or the largest first | Smallest |
| Which type of retention is used for composite restoration | Chemical |
| T or F: Unused amalgam should be removed with the HVE | False |
| What type of restorations are crowns and bridges | Indirect |
| Who is responsible for proper trituration techniques | Clinician |
| The specific amount of composite cured is called | Depth of cure |
| Which type of retention is used for amalgam restorations | Mechanical |
| The process for layering composite material is called | Incremental addition |
| T or F: In 1973, Dr. Alfred Fones started the first dental hygiene school in Bridgeport Connecticut | False |
| Does gamma-2 phase have high or low copper amalgam alloys | Low |
| T or F: Amalgam care is important because it is ADA guidelines for proper disposal | False |
| Which setting phase of amalgam is the weakest | Gamma-2 |
| Why do dentist not have to polish the amalgam we use today | They are high in copper which is shiny |
| At what hour mark do amalgams gain 80% of their strength | 8 hours |
| An amalgam restoration is discolored, and the margin have deteriorated. What is the cause | Corrosion |
| Which gamma phase is creep associated with | Gamma-2 |
| When silver-based alloy particles are mixed with mercury, the reaction is called | Amalgamation |
| Why do we overfill amaglams | Allows enough material to carve the contours |
| Spherical alloys require ____ mercury to wet | Less |
| Which sets more quickly out of spherical and lathe-cut alloys | Spherical |
| What mixes an amalgam capsule | Triturator |
Created by:
sarawright