lectures

Question 1

How to do a class II prep

Answer 1

Set out armamentarium
sit correctly 
look at prep
isolate
clean and dry
check for base or liner need
Place sectional matrix
Place wedge
place sectional matrix ring
use ball burnisher for proximal contact
do marginal ridge first, then everything else
remove ring, wedge, and matrix band to check for proximal contact

Question 2

when to place a liner

Answer 2

Deep filling

Question 3

why place a liner

Answer 3

Protect the pulp and reduce post-operative sensitivity

Question 4

what liner is used in clinic

Answer 4

Resin-modified glass-ionomer cement (vitrebond)

Question 5

How to condense composite

Answer 5

you cannot

Question 6

How long to light cure

Answer 6

20 seconds

Question 7

how does one remove any gingival flash

Answer 7

a number 12 blade

Question 8

what is a contra-indication for using composite

Answer 8

Operating field that cannot be isolated

High caries risk

Question 9

what determines the preparation features

Answer 9

Choice of restoration material

Question 10

what must be done for an amalgam restoration

Answer 10

Adequate depth of 1.5-2mm for compressive strength

diverting walls

Question 11

what must the cavosurface margin do for an amalgam restoration

Answer 11

Enamel and amalgam must have amarginal configuration of 90 degrees and

Question 12

How is amalgam head to the tooth

Answer 12

Mechanically locked inside the tooth

Question 13

how is composite held into the tooth

Answer 13

by micro-mechanical retenetion of the bonding agent

Question 14

Roll of Primary restistance form

Answer 14

Helps the restoration and tooth resist fracture due to occlusal forces

Question 15

Parts of Primary resistance form

Answer 15

Conserving sound tooth structure, cusps, and marginal ridges
Preparing pulpal and gingical walls perpendicular to the occlusal forces when possible
Rounding internal prep angles
removing unsupported weak tooth strucutre

Question 16

Roll of Conveneince form

Answer 16

Makes the procedure easier and more accessible

Question 17

What does Convenience form consist of

Answer 17

Clearance from the adjacent teeth

Extension of the walls to provide greater access for caries excavation

Question 18

how does one prep for a composite

Answer 18

Pulpal and axial depth are directed by the depth of the lesion
Proixmal extensions dictated only by the extent of the lesions
Removal of undermined cavosurface margin

Question 19

burs to use for a composite

Answer 19

first use round bur to get out defects

removal undermined cavo-surface margins with a straight bur

Question 20

How to see interproximal caries

Answer 20

Bitewing radiographic examination
Clinical examinations (adjunct to radiographic exam)
(transillumination also)

Question 21

when to use a box only prep

Answer 21

When only the proximal surface is defective with no lesion on the occlusal surface

Question 22

are leaks worse for composite or amalgam

Answer 22

worse for amalgam

Question 23

when is it good to use flowable composite

Answer 23

little occlusion with deeep grooves

Question 24

what should be used if pulp exposure

Answer 24

Dical (CaOH)

Question 25

why use a liner

Answer 25

releases F

Block tubules

Question 26

breaking contact for composite slot preps

Answer 26

no need to break contact because compoite already binds to the tooth

Question 27

when would one do a small II small restoration slot prep

Answer 27

indicated when access to the lesion can be obtained directly from facial or lingual
when final cavity doesn’t undermine the marginal ridge

Question 28

how does a class II moderate/large restoration look

Answer 28

like a Traditional class II amalgam prep

Question 29

do you go through the marginal ridge when doing a slot prep from the facial and lingual

Answer 29

no!

Question 30

how to get contact with composite

Answer 30

use an advanced sectional matrix system

Question 31

when can a tofflemire retainer be used for composite

Answer 31

when the prep doesn’t break call contacts