Q&A

Question 1

refers to resistance to vertical seating forces

Answer 1

Dental support

Question 2

resist dislodgement of a denture in the horizontal direction

Answer 2

Denture stability

Question 3

ability of the denture to withstand dislodging forces exerted kn the vertical plane

Answer 3

Retention

Question 4

low thermal conductivity

Answer 4

Modeling compound

Question 5

minimal porcelain thickness is

Answer 5

1.0- 0.5mm

Question 6

Most frequent cause of porosity in the porcelain

Answer 6

inadequate condensation of the porcelain

Question 7

stronger under compressove forces

Answer 7

Porcelain

Question 8

most commonly used form of the partial venner crowns

Answer 8

3- quarter crown

Question 9

do not oxidize in casting

Answer 9

Noble alloy
Gold
Platinum
Palladium

Question 10

Porcelain adheres to metal primarily by

Answer 10

chemical bond

Question 11

The surface hardness, strength, and proportional limit of the metal are______ with strain hardening , whereas the ductility & resistance to corrosion are ______. Elastic modulus is ____

Answer 11

Increased
Decreased
not changed

Question 12

controlled cooling of material to increase ductility & strength

Answer 12

Annealing

Question 13

design looks most like a tooth

Answer 13

Saddle ridge lap pontic

Question 14

preferred finish line for cast gold restoration

Answer 14

Chamfer

Question 15

finish line of choice for porcelain jacket & all ceramic crown preparations

Answer 15

Shoulder

Question 16

Obj. electrosurgery

Answer 16

1. Hemostasis
2. Coagulation
3. Access to cavosurface margin
4. Reduction of the inner wall of the gingival sulcus

Question 17

lowest percentage of expansion gypsum

Answer 17

Type IV - 0.10%

Question 18

gypsum products are mixed with warer, heat is given off

Answer 18

exothermic reaction

Question 19

dimensionally unstable in the presence of moisture. Rigid (stiff) most difficult to remove form the mouth

Answer 19

Polyether

Question 20

chemical reaction & does not produce by products during the rxn

Answer 20

Polyether

Question 21

subject to syneresis & imbibition

Answer 21

Reversible Hydrocolloid

Question 22

most accurateat least 3mm of space exisrs between the impression tray & the tissue

Answer 22

Irreversible hydrocolloids- alginate