Spring Quiz III

Question 1

When you are doing your occlusal reduction and bevel, what parameters are you looking at (3)?

Answer 1

1. Opposing occlusion, 2. Sound tooth structure, and 3. Tooth anatomy

Question 2

What is the most conservative crown material?

Answer 2

Gold

Question 3

What does the stud over-denture attachment look like?

Answer 3

The ball (male) is on the tooth

Question 4

What does the Zest over-denture attachment look like?

Answer 4

The ball is in the denture

Question 5

What are the interconnections between abutments and implants?

Answer 5

Internal/external hex, beveled internal/external (can be combined with hex, trilobe, spline, morse taper.

Question 6

What interconnection has the fewest number of possible positions?

Answer 6

Trilobe

Question 7

What types of copings exist in dentistry?

Answer 7

1. Metal in PFM, 2. Framework in a bridge, impression coping for an implant and cap on overdentures

Question 8

Of the precision attachments, which for an over-denture attachment is the best for stress distribution for the tooth root?

Answer 8

The Zest (Best for Perio issues)

Question 9

What are the advantages/disadvantages of extracoronal attachments?

Answer 9

They put a lot of load/stress on a tooth, but canines are suited well for it.

Question 10

What is a precision attachment?

Answer 10

“A male/female type mechanism manufactured to precise tolerances utilized to securely and reversibly connect a dental prosthesis to a tooth or an implant.”

Question 11

Why is it so important to keep the taper near ideal with partial coverage gold?

Answer 11

You have less axial height and less retention than with a full gold crown.

Question 12

What is the primary reason for a 360 degree bevel on an onlay?

Answer 12

It decreases the marginal gap (makes it tighter)

Question 13

Why can you get away with not having an acute angle on the buccal?

Answer 13

Because it is accessible and the patient can keep it clean “easier to finish and easier to maintain”

Question 14

What do you have at your disposal with partial coverage to give you retention and resistance?

Answer 14

Isthmus, boxes, grooves

Question 15

Can you get mesial distal resistance along with buccal lingual with an isthmus?

Answer 15

Yes, if you extend it into the grooves

Question 16

With a box form, what two axial walls are giving you mesial distal resistance with your box form?

Answer 16

The two axial walls. And the sides of the box give you the buccal lingual resistance

Question 17

Are you getting any resistance with a bevel?

Answer 17

Yeah mesial and distal resistance form only on an onlay

Question 18

In a 3/4 gold crown, what aspect of your retentive grooves compensate for lack of a buccal wall?

Answer 18

The lingual side of that groove

Question 19

What might some contraindications for gold be?

Answer 19

Esthetics, when in doubt, don’t do it.