Quiz 9

Question 1

What are the basis’s to a treatment plan being decided?

Answer 1

Severity of diagnosis
Region of mouth

Question 2

intracoronal / inside tooth

Answer 2

Inlays

Question 3

covers more than inlay, including cusps/entire occlusal surface

Answer 3

Onlays

Question 4

thin layer of ceramic or composite resin, bonded to facials only (esthetic purpose only)

Answer 4

Venners

Question 5

extracoronal, large restorations, completely covers crown of tooth

Answer 5

Crowns

Question 6

replaces missing teeth, abutments connected via pontics

Answer 6

Bridges

Question 7

What are the classifications of indirect materials?

Answer 7

Metals
Ceramics
Ceramometal
Composite

Question 8

o Variety of alloys
o Casting involves melting metal and pouring or forcing material into mold
o Strong, work well in high stress areas (posteriors)
o Not used when esthetics are important

Answer 8

Metals

Question 9

60% or more of noble elements, 40% must be gold

Answer 9

High noble alloys

Question 10

25% or more of noble elements, no gold requirements, 75% base metals

Answer 10

Noble alloys

Question 11

Less than 25% noble metals, no gold requirements

Answer 11

Base alloys

Question 12

= parts per 100

Answer 12

Percent

Question 13

= parts per 24

Answer 13

Carat

Question 14

= parts per 1000

Answer 14

Fineness

Question 15

 Slurry of pumice + tin oxide
 Brownies, greenies super greenies, wet field, light pressure, short bursts

Answer 15

Metals

Question 16

 Extraorally: rouge
 Intraorally: tin oxide
 Avoid hand/power scalers, prophy pastes, air polishing

Answer 16

Gold

Question 17

o Stimulate natural tooth color, translucency, & esthetics
o Lacks toughness, fracture resistance
o Can abrade opposing natural dentition if not in proper occlusion

Answer 17

Ceramics

Question 18

heating ceramics until they melt and fuse together

Answer 18

Sintering

Question 19

o Silica = glassy matrix
o More esthetic
o Less strong
o Materials: porcelain

Answer 19

Glass-based

Question 20

o Crystalline based, no glass matrix
o Composed of alumina oxides and zirconia
o Strongest ceramic material

Answer 20

Non-glassed based

Question 21

o Glass-based ceramic material
o Tooth-colored
o Low fracture toughness, brittle
o Ideal for esthetic restorations
o Metal oxides added to create shades
o Uses: PFM crown, porcelain on zirconia, veneers

Answer 21

porcelain

Question 22

o Non-glass based ceramic material
o Strongest ceramic material
o Opaque
o Uses: single unit crowns, cores for 3-unit bridges, anterior & posterior regions

Answer 22

Zirconia

Question 23

o Computer-aided design and computer-aided machining
o Parts: optical scanner, computer with software, milling device

Answer 23

CAD/CAM restorations

Question 24

o Durability + esthetics
o Metal core forms oxide layer when healed
o Porcelain chemically fuses to oxides on metal
o Porcelain sintered in layers

Answer 24

Ceramomental

Question 25

What are the three layers that porcelain is stacked and fired in?

Answer 25

1. opaque layer 2. shades added in layers 3. translucent layer

Question 26

What is used to polish ceramics?

Answer 26

Aluminum oxide Diamond paste

Question 27

o Fabricated on die or milled using CAD/CAM o Tried in mouth, adjusted, bonded with bonding agent and resin cement o Eliminate problem with polymerization shrinkage, reduce wear seen in direct composites

Answer 27

Composites

Question 28

What material has the best margins?

Answer 28

Metal