E3: You down with ACC? Yeah you know me!

Question 1

What are 5 contraindications to the ACC?

Answer 1

1.Limited interocclusal distance 2.Heavy Occlusial Forces 3.Bad Habits 4.dry at cementation 5.subgingival preps

Question 2

Whats the primary advantage of the ACC?

Answer 2

Esthetics!

Question 3

Disadvantage of ACC: Low ______ potential

Answer 3

repair

Question 4

Disadvantage of ACC: Difficult intraoral ________

Answer 4

polishing

Question 5

Disadvantage of ACC: _____ of apposing dentition and restorations:

Answer 5

Wear

Question 6

What are the 3 compositions of dental ceramics?

Answer 6

1.Predominantly Glass 2. Particle-filled glass 3.Polycrystalline

Question 7

It is important to understand the fact that highly esthetic ceramics are WHAT COMPOSITION?, and ceramics that exhibit high strength are generally WHAT COMPOSITION?.

Answer 7

predominately glass……crystalline

Question 8

Lithium disilicate is an example of WHAT COMPOSITON?

Answer 8

particle-filled glass (in between esthetics and strength!)

Question 9

Zerconia ceramic is an example of WHAT COMPOSITION?

Answer 9

polycrystalline (strength, less esthetic)

Question 10

Power Liquid Ceramics: Natural _________ and vitality…Can be as thin as ____ mm…Must be ______ to the tooth….Marginal fit is ________

Answer 10

translucency…0.2 mm…bonded…excellent!

Question 11

What’s the first example of slip casting?

Answer 11

Spinell

Question 12

Which ACC method? High strength, Good esthetics, Custom-colored core, Single crowns: high success rate and longest clinical trials, Anterior FPD applications

Answer 12

in-ceram

Question 13

Hot pressing ceramic uses the _______ technique. please don’t get this wrong.

Answer 13

LOST WAX

Question 14

DR. HARRIS SLIDE: IPS Empress is a leucite-reinforced glass ceramic (SiO2-Al2O3). IPS Empress has a low flexural strength of ____±10 UNITS? limiting its use to single unit complete-coverage restorations in the anterior region

Answer 14

112 Mega Pascals…NERD!

Question 15

DR. HARRIS SLIDE: IPS Empress 2 is a LITHIUM-DISILICATE glass ceramic (SiO2-Li2O). IPS Empress 2 has a flexural strength of _________ which is much HIGHER than that of IPS Empress

Answer 15

400±40 MPa (leucite was only 112 MPa)

Question 16

Empress has its strength increased because it is ______ to the tooth!

Answer 16

BONDED

Question 17

What are the two disadvantages to the empress system?

Answer 17

relatively weak and expensive equipment/supplies

Question 18

CAD/CAM starts out as prefabricated __________.

Answer 18

glass- ceramic ingots

Question 19

The production of Procera will start with milling an ______ die to compensate for the _______ shrinkage

Answer 19

enlarged …. sintering

Question 20

How much shrinkage is there upon sintering in Procera?

Answer 20

20% Shrinkage

Question 21

Procera Milling process provides ____ micron cement space.

Answer 21

50 micron

Question 22

ACC design: MUST have _______ line angles!

Answer 22

ROUDNED

Question 23

ACC design specifications: Incisal: _____, Facial Axial Reduction _____, Lingual axial reduction _____, Marginal _____.

Answer 23

Incisal: 2.0mm , Facial Axial Reduction 1.5mm, Lingual axial reduction 1.5mm , Marginal 1.0mm.

Question 24

Which material has a high success rate with LONGEST CLINICAL TRIALS?

Answer 24

In-Ceram

Question 25

Can you etch In-ceram? Is the core opaque or translucent?

Answer 25

NO….Opaque

Question 26

Impress 2 is lithium disillicate, what was Impress 1 made of?

Answer 26

Leucite-reinforced glass

Question 27

Can you bond Impress? Translucent or opaque?

Answer 27

YES…Translucent