Dr Michael DiTolla – The Modern Restorative Office – March 25, 2011



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Dr Michael DiTolla – The Modern Restorative Office – March 25, 2011



Regarding the Rapid Anesthesia Technique:

a. A lower block for a single mandibular molar was avoided

b. Expressing a topical anesthetic into the sulcus of a lower molar was shown

c. When using the technique, pulpal anesthesia does not last as long as a block

d. All of the above
Which is/are not true:

a. As with a lower block, you need to wait about eight minutes for the anesthesia to work

b. Using a regular aspirating syringe, Septocaine® was applied into the furcation from the buccal

c. The rapid anesthesia technique works best to anesthetize one or both mandibular molars

d. The rapid anesthesia technique helps you stay on schedule because it works in seconds
For mandibular molar restorations:

a. Block anesthesia will still be used for full arch or quadrant restorations

b. A lower block still is the easiest injection to hit every time

c. Most patients would rather have everything numbed instead of just a single tooth

d. All of the above
When syringing the anesthesia:

a. One tooth will require one-half to two-thirds of a carpule of anesthetic

b. Care should be taken to avoid getting anesthesia to the apices

c. A beveled needle is used to prevent the anesthesia from entering the pulp through the nutrient canals

d. None of the above
Noticed during a walk-through of the dental laboratory was:

a. Over-retraction of gingival tissues prior to the impression

b. A lack of consistent and adequate reduction on all preparations

c. Too much lingual reduction

d. None of the above
When preparing teeth for crowns, it is difficult to know how much has been reduced:

a. Without using a matrix to see how much reduction you did

b. Unless you use a preparation technique based on depth cuts

c. Unless you use a belt-driven handpiece

d. Both a and b
The Reverse Preparation Technique includes:

a. The use of self-limiting depth cuts

b. Placement of a second cord, Size 2, on top of a 00 cord

c. Removal of the top cord after use of an anatomic cotton compression cap for 8-10 minutes

d. All of the above
Which of the following is false:

a. A fine-grit 856-025 diamond is used to finish the gingival margins

b. The bite registration for the lab need only be the incisal one-third of the prepared and opposing teeth

c. Reduction should be 2mm on the occlusal surface and 1.5mm for the axial surface

d. None; all of the above are true

When discussing an acceptable impression, it is observed that:

a. We want to see well-defined impression material beyond the margin of the prep

b. It shows the technician exactly where the margin ends

c. It allows the technician to create the proper emergence profile

d. All of the above
In regards to problem impressions, some examples of this are:

a. The use of a double-arch impression tray for a 4-unit bridge

b. A part of the tray showing through at the lingual margin

c. Use of four impressions to try to capture the margins on one case, and still not succeeding

d. All of the above
What are the benefits of a monolithic, full-contour zirconia restoration?

a. It has a porcelain overlay

b. Nothing can chip off these restorations because it's one material

c. It has a metal occlusal

d. None of the above
Why do the majority of patients prefer a monolithic, full-contour zirconia restoration?

a. It is a more esthetic option than full-cast metal

b. It is more esthetic than metal occlusal PFMs

c. It is made of a weak material

d. Both a and b
When is a monolithic, full-contour zirconia restoration indicated?

a. When the patient has broken a restoration made of a different material

b. For strength when restoring teeth of bruxers and grinders

c. When there is limited occlusal space

d. All of the above
The first step in the Reverse Preparation Technique is to break the proximal contacts.

a. True


b. False
What is the second step of the Reverse Preparation Technique?

a. Breaking the contacts

b. Prepping the gingival margin

c. Incisal edge reduction

d. None of the above
How is adjusting a monolithic, full-contour zirconia restoration different than adjusting other ceramic restorations?

a. There is no difference

b. It takes longer than adjusting other crowns

c. Different burs are required than those used on other crowns

d. None of the above
What is the wear rate of monolithic, full-contour zirconia crowns, according to an ongoing study?

a. About the same as IPS e.max crowns

b. Much higher than the wear rate of lithium disilicate

c. Much lower than the wear rate of lithium disilicate

d. The same as cast-gold crowns
What type of bur should you use when adjusting a monolithic, full-contour zirconia restoration?

a. A coarse-grit diamond bur

b. A fine-grit diamond bur

c. You should not use a bur, only wheels

d. None of the above
Why is there typically not much, if any, adjustment needed on monolithic, full-contour zirconia restorations?

a. It is a monolithic restoration

b. It is made using CAD/CAM

c. It is made of gold

d. It is strong
Can monolithic, full-contour zirconia restorations be used for inlays and onlays?

a. Yes


b. No
An e.max CAD block:

a. Is made of lithium disilicate

b. Primarily is used to mill copings

c. Achieves its full flexural strength of 130 megapascals after full crystallization in the oven

d. Both a and b
Which of the following is NOT true about e-max CAD:

a. It can be stained

b. It can be conventionally cemented

c. It cannot be overlayed with a veneering ceramic

d. It can be milled to full contour
In the context of discussing the shade of a material that is homogeneous, it was observed that:

a. We do not have the problems of a dark or a snow-white substructure

b. The shade on the outside of the restoration is the same as the shade on the inside

c. Both a and b

d. None of the above
A "blue block" is so-called because of the:

a. Distinctive veining, like a small block of blue cheese

b. Blue color of the ceramic block out of which crowns are milled

c. Protective blue coating that prevents blocks from chipping in shipment

d. None of the above
It was observed that the STA single-tooth anesthesia system cannot be used for quadrant dentistry.

a. True


b. False
A carbide razor bur and Christiansen crown remover were shown to be effective for old PFMs.

a. True


b. False
Which of the following is/are true:

a. If you get a good impression of a bad margin, the lab can still make it work

b. Even when preparations are perfect, bad impressions makes them less readable for the lab technician

c. For an ideal impression, you need good retraction to can get impression material beyond the margin

d. All of the above
It was observed that restored teeth typically “get bigger”, never smaller:

a. Because dentists have tendency to under-prepare teeth

b. Because technicians have tendency to overbuild restorations for improved esthetics

c. And for that reason no-prep veneers adjacent to restorative dentistry are a conservative esthetic option

d. All of the above
An example of the ultimate esthetic challenge for a dental material is:

a. The hammer test

b. Its ability to insulate the tooth from hot and cold

c. Doing a crown on a single central incisor that matches the adjacent natural tooth

d. All of the above
When demonstrating the Vita Easyshade®, which of the following areas of the tooth were measured:

a. The gingival third

b. The middle third

c. The incisal third

d. All of the above
When taking a photograph of a tooth that a restored tooth should match:

a. The lab needs to see the tooth in relation to a picture of the shade tab, with the tab in place

b. A red filter should be used

c. An old fashioned print is most desirable

d. All of the above
Using e.max for an endodontically treated tooth, it was noted that we would not see show-through.

a. A top (size 2E) cord is not required if supragingival margins are desired

b. The double-zero cord stays in place throughout the entire impression sequence

c. Impression material beyond the margin is an impression of the root surface in the sulcus

d. All of the above
As the two-cord technique was demonstrated:

a. The bottom cord is smaller than the top cord

b. The top cord is smaller than the bottom cord

c. Posterior teeth require larger diameter cords

d. None of the above
Using a round bur to trace around the gingiva:

a. Is the main step of the reverse preparation technique

b. Assures enough reduction in the gingival third

c. Gives us a nice half-circle shape into the tooth, beginning the formation of our margin

d. All of the above
Compared to other options, a benefit of IPS e.max is:

a. There is no dark coping to mask-out

b. There is no white substructure to shine through

c. Both a and b

d. None of the above are true
A Cerec 3 intraoral scanner:

a. Was used for one case in lieu of taking an impression

b. Does not require retraction because a special powder enables it to "see" under the gingiva

c. Both a and b

d. None of the above
For e.max CAD crowns, which of the following is/are true:

a. With milling and CAD/CAM milling technology, we can make crowns that are more consistent

b. It is esthetic, has no substructure, and can be conventionally cemented

c. Both a and b



d. None of the above

Answers can be found at http://www.clinicialresearchdental.com/ or call 1-800-265-3444, Ext 223 to have answers faxed to you.



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