Term
| What is the proper amount of occlusal reduction for the functional cusp bevel |
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Definition
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Term
| What is the proper amount of occlusal reduction for the non functional cusp bevel |
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Definition
| Non-functional cusp is 1.0 - 1.5mm |
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Term
| What type of acrylic is Duralay? |
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Definition
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Term
| What is ethyl methacrylate? |
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Definition
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Term
Which of the following statement would be best descrbe the reason for the development of a J margin? 1. over reduction of the axial wall 2. Use of a bur with a small diameter 3. Attempting to avoid the adjacent tooth when reducing the
4 proximal surface of the tooth. 5. All of the above |
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Definition
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Term
| Which bur is not recommended for preping interproximal surfaces |
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Definition
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Term
| Which bur IS recommended for preping interproximal surfaces |
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Definition
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Term
| What metal-alloy is used to fabricate the iso-Form anatomical crowns? |
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Definition
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Term
| Which dimension is essential to selecting the proper Iso-form crown? |
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Definition
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Term
| How much axial reduction is required for a gold full veneer crown? |
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Definition
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Term
| Gold Veneer Crown for #2, the distance between the mesiolingual cusp and the central groove is? |
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Definition
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Term
| The mesiolingual cusp of tooth #2 enters central fossa of what tooth? |
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Definition
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Term
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Definition
because of: overreduction of axial wall, use of bur with small
diameter, avoiding adjacent tooth |
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Term
Which of the following components can be added to a prep to improve retention and resistance?
1. Groove
2. Box
3. Isthmus
4. All of the above |
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Definition
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Term
| T/F Maximum intercuspal position (MIP) is a mandibular position dictated by teeth |
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Definition
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Term
Which of the following contribute to anterior guidance?
1. Lingual morphology of the maxillary anterior teeth
2. Horizontal Overlap
3. Vertical Overlap
4. All of the Above |
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Definition
| All of the above: Lingual morpho of the maxillary anterior teeth, horizaontal overlap, veritcal overlap |
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Term
| As you progress from the mandibular premolars to the molars, each successive tooth is slightly more occlusally positioned. This creates a slight anterior-posterior curvature to the occlusal plane. What is the curvature called? |
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Definition
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Term
| What is it when the mandibular molars are inclined lingually |
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Definition
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Term
| T/F The hanau articulator that is being used in the lab is an adjustable articulator |
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Definition
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Term
| Working cast stone is made of... |
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Definition
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Term
| What is the opposing impression made of |
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Definition
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Term
| What is the average inclination of the posterior slope of the articular eminence? |
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Definition
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Term
| Where is the facial height of contour if the mandibular 1st molar? |
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Definition
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Term
| Where is the lingual height of contour if the mandibular 1st molar? |
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Definition
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Term
| The mandibular first molar has how many cusps? |
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Definition
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Term
| What is the diameter of the tip of the 856-016 bur? |
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Definition
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Term
| At what age does the maxillary first molar erupt? |
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Definition
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Term
| How many true cusps does the maxillary first molar have? |
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Definition
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Term
| How many pulp horns does the pulp chamber of the maxillary second molar have |
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Definition
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Term
| using the international system of tooth ID the maxillary right second molar |
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Definition
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Term
| Root formation of the permanant first mandibular molar is usually complete when the maxillary first premolar starts to erupt |
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Definition
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Term
| Permanent 2nd mandibular molar has how many cusps? |
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Definition
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Term
Which of the follwoing statments about the permanent second mandibular molar is correct?
1. It has 2 roots?
2. The mesial root has 2 canals
3. The mesiobuccal cusp is most prominent
4. Pulp chamber usually has 4 pulp horns
5. All the Above |
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Definition
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Term
| Direct composites in dentistry are |
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Definition
| Polymers reinforced with ceramic micro and nano-particles |
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Term
| Which property does not follow the rule of mixture or the modified rule of mixture for predicting properties of particulate-filled composite? |
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Definition
| ROM applies to = density, compressive strength, shrinkage, elastic modulus, and hardness |
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Term
| To optimize mechanical behavior of dental composites it is critical to: |
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Definition
| minimize the size of particular filler |
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Term
| Dental composites that are heterogenously filled contain... |
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Definition
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Term
| What does a higher filler content mean |
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Definition
| Less shrinkage and increased hardness |
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Term
| Dentin should not be acid etched before bonding? |
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Definition
| None of the above. You should etch, then primer, then bond, then fill with composite |
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Term
| The main reason for bonding to tooth strcutures is to.. |
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Definition
To Completely seal the interface between the tooth and restoration..
also to prevent micro leakage and to provide retention |
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Term
| The hybrid layer that forms during bonding to dentin is |
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Definition
| the interdiffusion zone of bonding agent and demineralized collagen fibrils (its double ended with hydrophilic and hydrophobic) |
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Term
| Indicator of proper surface of moist dentin bonding |
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Definition
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Term
Exposed collagen matrix after demineralization that has not been impregnated with primer resin...
1. may be degraded due to hydrolytic degradation
2. may be degraded by proteases
3. will shrink if dried
4. all the above |
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Definition
| may be degraded due to hydrolytic degradation, may be degraded by proteases, will shrink if dried, ALL THE ABOVE |
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Term
4 variations of dentin bonding have been developed so far: 1) 3 steps of etch, prime, bond
2) 2 steps of etch, then prime and bond together
3) 2 steps of etch and prime together, then bond
4) 1 step combining etch, priming bonding
For which of these systems do you need to be concerned about moisture of the dentin? |
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Definition
1+2
when you are etching by itself, you need to worry about moisture |
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Term
| Protease inhibitors may be useful in dentin bonding because |
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Definition
| They may deactivate endogenous proteases to protect demineralized collagen |
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Term
| Self etching primers are systems that combine: |
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Definition
| 2 steps of etch & prime together then bond, may be less technique sensitive than 3 step bonding system |
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Term
anodic polarization curves are useful for showing
1. rates of corrosion
2. passive oxide film formation
3. breakdown of the protective passive oxide film
4. all the above |
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Definition
| all of the above (rates of corrosion, passive oxide film formation, breakdown of the protective passive oxide film) |
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Term
| Depletion zone due to plaque on metal restoration |
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Definition
| may lead to formation of conc. cell and corrosion |
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Term
| Metal most responsible for the corrosion resistance of stainless steal |
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Definition
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Term
| Where do you place the retention bevel on a Class II amalgam prep? |
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Definition
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Term
| In a class II amalgam preparation the proximal box facial and lingual walls are |
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Definition
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Term
| Gingival floor depth MO amalgam determined by |
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Definition
| Extent of caries & .5 mm seperation of cavosurface from adjacent tooth |
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Term
| What feature do the following burs share in commmon that are important to amalgam prep design: #34 diamond, #330 diamind, #330 carbide, #245 carbode |
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Definition
| They all cut rounded internal line angles |
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Term
| After using your hatchet or hoe to finalze your F and L extensions, you notice that the gingival floor is under-extended apically for proper separation. What do you do next? |
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Definition
| Use a 34 bur to lower the gingival floor apically and then use a hatchet or hoe to re-plane the F and L walls |
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Term
| When developing the outline form for a class II amalgam, we determine that the facial-lingual dimension of our box form on the extent of carious lesion and the adjacent tooth. Which pre-molar preparation willl have the narrowest facial-lingual dimension? |
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Definition
| MO #12/ First maxillary premolar |
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Term
| The facial proximal extension in a class II amalgam preparation |
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Definition
| Should exit as close as possible 90 degrees to the external surface of the tooth |
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Term
| What is a a cavo surface? |
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Definition
| the junction of sound & prepped tooth structure/junction prepped and unprepared |
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Term
When would you extend an amalgam prep for a posterior tooth?
1. Undermined enamel 2. Deeply invaginated DEJ 3. Highly fissured anatomy & difficult to seal 4. All the Above |
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Definition
ALL the above
1. Undermined enamel 2. Deeply invaginated DEJ 3. Highly fissured anatomy & difficult to seal |
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Term
| Sometimes we alter the outline of class 2 amalgam prp making them less extended or more conservative when we are considering |
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Definition
| esthetic requirement of the patient ALSO patient, occlusion, location and size of tooth |
|
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Term
| the axial depth in a class 2 amalgam prep |
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Definition
| varies in depth from the gingival cavosurface depending on which tooth you are working on |
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Term
| The wider the isthmus the ____ the facial and lingual walls should be. |
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Definition
| More parallel (not convergent or divergent) |
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Term
| For an MOD amalgam prep for #30, if the isthmus is too wide on the central groove, what can happen? |
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Definition
| lingual cusp can fracture |
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Term
| After roughing out the occlusal outline form of MO amalgam preparation on tooth #19, first floor/ wall to be estimated in its final position and depth is the: |
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Definition
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Term
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Definition
| Central Groove, Occlusal Outline, Establish Gingival Floor, Faccial and Lingual Extensions, pulpal floor depth/isthmus, dovetail, proximal retention |
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Term
| Amalgam proximal retention points are placed |
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Definition
| in the dentin of the facial axial and lingual axial line angles at the expense of the facial and lingual proximal walls |
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Term
Acute caries are:
1. dark in color
2. light yellow in color 3. rapidly progressing 4. slowly progressing 5. soft and moist
6. leathery and firm |
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Definition
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Term
The ICDAS
1. Makes use of an explorer to detect decay
2. Requires teeth be wet/moist when examined
3. Is a visual classification system that includes the use of radiographs for proximal decay
4. Is used only for classifying occlusal surface pit and fissure decay |
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Definition
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Term
| When decay is very deep and there is concern about a carious pulp exposure, then incomplete removal of caries may be attempted in order to avoid root canal therapy required of an indirect pulp cap are: 1. No history of spontaneous tooth pain, 2. A normal response to cold and hot stimuli, 3. a non-vital pulp, 4. patient older than 40 years of age |
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Definition
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