Interim Restoration, Indirect-Direct Technique for FDP

Question 1

Tx steps for FDP:

Answer 1

Dx work up, tx plan, shell, custom tray, tx, definitive resto, interocclusal record, MCC/ACC shade, interim, pindex, trim, mount working cast, wax up, sprue, invest, possible soldering, delivery

Question 2

When to use (or types of?) indirect technique for interim restorations:

Answer 2

processed, milled (check?)

Question 3

Fxn of interims:

Answer 3

esthetic, stabilization, function, assist in determining therapeutic effectiveness of a tx plan

Question 4

Ratio of powder to liquid for PMMA:

Answer 4

3:1

Question 5

Type of reaction for PMMA:

Answer 5

addition polymerization

Question 6

Stages of setting, PMMA:

Answer 6

sandy, stringy, doughy, rubbery, stiff

Question 7

Part of PMMA that is highly volatile:

Answer 7

monomer

Question 8

Activator for PMMA:

Answer 8

organic amine (3’ amine)

Question 9

Fxn of inhibitor, PMMA:

Answer 9

prevent monomer from polymerization during storage

Question 10

Name of inhibitor in PMMA:

Answer 10

hydroquinone

Question 11

Cross-lining agent in PMMA:

Answer 11

dimethacryate

Question 12

polymer formed by PMMA:

Answer 12

methyl Methacrylate

Question 13

Initiator for PMMA:

Answer 13

benzoyl peroxide

Question 14

help create correct shade for PMMA:

Answer 14

pigments

Question 15

Activator, in liquid or powder of PMMA:

Answer 15

liquid

Question 16

PMMA is X-linked by:

Answer 16

metyl methacrylate beads

Question 17

How to add on to interim:

Answer 17

salt and pepper w bended brush

Question 18

Clear acrylic resin for PMMA:

Answer 18

ortho resin

Question 19

Type of acrylic we use to add shade to PMMA:

Answer 19

jet acrylic

Question 20

When to wax up abutment teeth for dx waxup for FDP:

Answer 20

when changing long axis or occlusal scheme of abutment teeth

Question 21

Do most clinical cases require wax up on abutment teeth?

Answer 21

yes

Question 22

How to give additional space for acrylic in the gingival area

Answer 22

small amt of wax in all gingival crevices of teeth to be prepped and in gingival area of acrylic pontic

Question 23

Make dx wax up on this:

Answer 23

duplicate of the diagnostic cast

Question 24

Step after completing dx waxup:

Answer 24

Silicone Lab PUtty ESF

Question 25

Trim these areas of the Lab Putty ESF:

Answer 25

land area and vents on either side of each tooth in the B-L direction

Question 26

Why to trim the land area;

Answer 26

proper seating

Question 27

Where to place supragingival cavosurface margin:

Answer 27

0.5-1mm above CEJ

Question 28

How to prep the stone cast:

Answer 28

minimal prep w proper POI, don’t damage DMR of 21, can saw bw 20/21

Question 29

TF? Vaseline or Al-cote should be applied directly to the prepared dx cast.

Answer 29

T

Question 30

Do this after seating the ESF w the PMMA in it:

Answer 30

wrap rubber bands around the ESF and cast, hot water bath for 5min

Question 31

How to remove acrylic from the ESF:

Answer 31

break stone from acrylic

Question 32

How to orient the disk when shaping the final contour:

Answer 32

parallel to the desired final contour

Question 33

What will happen if you cut vertically while trimming margins:

Answer 33

short margin

Question 34

Check this first after trimming:

Answer 34

proximal contacts (PMSO)

Question 35

TF? Ensure there are no open margins for the interim shell.

Answer 35

F. Will be filled during relining

Question 36

When to make occlusal adjustments:

Answer 36

before and after relining shell

Question 37

Where to place vent holes:

Answer 37

occ or L of shell, #4 round bur

Question 38

Do this before relining:

Answer 38

vaseline

Question 39

How to check proper seating of shell:

Answer 39

by relating the shell to the proximal teeth and by using pts articulator

Question 40

How long to leave shell with addition lining in warm water:

Answer 40

few secs

Question 41

DIrection of rotation of bur when trimming margin:

Answer 41

toward margin, to prevent debris from covering penciled in margin

Question 42

How to ensure hygienic access in gingival embrasures:

Answer 42

proxi-brush clearance

Question 43

TF? No need to check excursive movements for interim.

Answer 43

F.

Question 44

Luster the interim using this:

Answer 44

Robinson wheel

Question 45

Where to place pinholes for FDP:

Answer 45

check “…each die, the adjacent teeth, and the neighboring edentulous area” Slde 61/81

Question 46

Amt of unprepared tooth beyond margin of to show:

Answer 46

0.5-1mm

Question 47

To remove excess flash just apical to critical margin on die:

Answer 47

small carbide bur or scalpel