02 CAD/CAM Inlays and Onlays

Question 1

For posterior CAD/CAM crown preps, what is the ideal occlusal reduction

Answer 1

1.5-2.0 mm

Question 2

What is the margin design for a posterior CAD/CAM crown

Answer 2

1 mm Heavy chamfer, shoulder, or butt joint

Question 3

How much taper is on a posterior cad/cam crown ideally

Answer 3

6-10 degrees

Question 4

cad/cam anterior full crown prep facial and lingual reduction

Answer 4

1.0-1.5 mm

Question 5

cad/cam anterior crown incisal reduction

Answer 5

1-2 mm

Question 6

cad/cam anterior crown reduction at the margin

Answer 6

1 mm

Question 7

cad/cam anterior crown taper

Answer 7

6-10 degrees

Question 8

What type of margin do you want on an anterior cad/cam crown

Answer 8

chamfer or shoulder

Question 9

How many planes of reduction should a cad/cam anterior crown have

Answer 9

3

Question 10

What is an inlay

Answer 10

it is similar to a filling that fits inside cusp tips at the center of the tooth’s surface

Question 11

how does an onlay differ from an inlay

Answer 11

it is more extensive and extends over at least one cusp….or the entire biting surface of the treated tooth

Question 12

Why should the margins have sharp edges for a cad/cam onlay?

Answer 12

so they are easily identifiable

Question 13

what is the minimum occlusal reduction for a cad/cam onlay

Answer 13

1.5 mm

Question 14

what is the angle of the internal axial walls in a cad/cam onlay

Answer 14

6-10 degrees

Question 15

How much interproximal flare is used for a cad/cam onlay

Answer 15

100-120 degrees

Question 16

What type of margin is used in a cad/cam only

Answer 16

butt joint

Question 17

Ideal CAD/CAM Inlay Dimensions

Margins: \_\_\_\_ \_\_\_\_
Occ Redux: \_\_\_\_\_\_
Internal Ax Walls \_\_\_
\_\_\_ Int Line angles
Intrprx Flare \_\_\_\_\_
Isthmus width \_\_\_\_\_
Isthmus depth \_\_\_\_\_

Answer 17

Sharp edges
1.5-2 mm
6-10 degrees
Rounded
100-120
1.5-2.0 mm
>1.5 mm

Question 18

What should you avoid in your prep design

Answer 18

sharp angles

Question 19

What will cause overmilling

Answer 19

If the diameter of the bur is larger than a section of the prep

Question 20

What type of margin is to be avoided for CAD/CAM inlay onlys

Answer 20

feather edge

Question 21

What is the highest degree of translucency for e.max

Answer 21

hT

Question 22

What is the indications for IPS Empress CAD

Answer 22

Single tooth restorations

Question 23

Ceramir Technique

1. Leave prep slightly ________
2. No _____ agent required.
3. Do not use _____, primers or other treatments
4. Etch lithium disilicate with ___ ______ acid for ___ seconds
5. Mix cement and load crown with Ceramir
6. ___ minutes working time
7. Clean up gel phase at ___ minutes
8. Fully set at ___ minutes
   9 ____ which fosters ________ formation between tooth and material

Answer 23

1. Moist
2. bonding
3. silane
4. 5%, hydrofluoric
5. 2
6. 3
7. 5
8. Bioceramic, nanocrystal

Question 24

Esthetic cements require a ______ primer for bonding to _______ based ceramics or _______ primer containing _______ monomer for bonding to zirconia based ceramics

Answer 24

silane
silica
ceramic
acidic

Question 25

What is the coupling agent between the inorganic porcelain and organic resin cement

Answer 25

Silane primer

Question 26

For higher bond strength to zirconia

Answer 26

Apply tribochemical silica coating to the restoration and use silane primer

Question 27

What is Tribochemical silica coating?

Answer 27

Impact energy blasted silicate particles that produce bonding between the silicate and target surface by mechano-chemical means

Question 28

What materials do you use a ceramic primer with?

Answer 28

alumina and zirconia

Question 29

What is the universal restorative primer

Answer 29

Monobond plus

Question 30

What is monobond a combo of

Answer 30

Silane methacrylate
Phosphoric acid methacrylate
Sulfide methacrylate

Question 31

How long does monobond need to react

Answer 31

60 seconds