Metal Inlay Onlay

Question 1

Indications for metal restorations

Answer 1

Endo teeth
Risk of fracture
Diastema closure/plane correction
RPD abutment

Question 2

Contraindications for cast metal

Answer 2

High caries
Young
Esthetics
Small restorations

Question 3

Splitting forces are a disadvantage of

Answer 3

metal inlays

Question 4

Inlay
taper
Clearance

Answer 4

Taper: 2-5
Clearance: .2-.5

Question 5

Primary retention of metal inaly

Answer 5

Walls of isthmus and box
Short walls with little taper
Tall walls with more taper

Question 6

Primary resistance form of metal inlay

Answer 6

Dovetail, box forms
Rounded internal line angle
Cusp thickness and dentin support

Question 7

Gingival bevel
size
Margin angle

Answer 7

.5-1mm

30 degrees

Question 8

Function of gingival bevel

Answer 8

Increase strength of enamel
Improve seal
Burnishing margins

Question 9

Occlusal bevel

degrees

Answer 9

40 degrees

Question 10

When is no bevel indicated

Answer 10

steep cusp inclines

Question 11

Adding retention to inlays

Answer 11

Dovetails
Grooves
Slots

Question 12

How deep should retention grooves be

Answer 12

3mm

Question 13

Rule for removing cust

Answer 13

greater than 1/2 the intercuspal distance

Question 14

Onlay dimensions

Answer 14

Taper: 2-5
Functional: 1.5mm, multi plane
Non functional: 1mm

Question 15

Onlay collar

Answer 15

1mm shoulder

1mm bevel