FPD Provisional Restorations Flashcards Preview

Fixed 2- Summer 2015 > FPD Provisional Restorations > Flashcards

Flashcards in FPD Provisional Restorations Deck (24):
1

What is used as a representation of the definitive restoration form, creates outer contour, and is determined at the diagnostic stage?

External Surface Form (ESF)

2

The _______ Surface Form represents prepared hard and soft tissue that receive the restoration and determines the internal contour.

Tissue (TSF)

3

What is the number one problem or concern with placement of provisional materials in the patient?

Heat generation via polymerization reaction

4

Heat generated by _______ materials (Jet), reach a higher temperature than vinyethylmethacrylate (Trim) or Bis-GMA materials.

Methylmethacrylate (PMMA)

5

Which materials produce the highest exothermic reaction temperatures?

PMMA (polymethyl methaacrylate)

6

A small amount of resin ______ will result in poor proximal contacts.

shrinkage

7

In a clinical setting, what must be a consideration prior to direct provisional fabrication?

Monomer allergies and chemical burns

8

What constitutes an "ideal" preparation?

-Proper reduction
-POW
-Clean margins

9

Overcontouring and inadequate marginal adaptation will contribute to ______ _____ and an unhealthy periodontium.

plaque accumulation

10

What is the powder to liquid ratio for Trim (Polyvinyl ethylmethacrylate)?

Powder 2: Liquid 1

11

The ESF should be filled up to the _____ level of the prepared teeth.

Cervical

12

True or False: After filling the ESF with Trim, the surface gloss disappears and indicates that it is ready to seat on the arch.

TRUE.
Jet does not work this way, however

13

When the resin reaches a _______ stage, move the ESF occlusally about _____ and place it back on the teeth.

doughy
2mm

14

What is the purpose of "pumping" the ESF up once it reaches the doughy stage?

Break the seal of resin on gingiva and teeth (typodont)
AVOID THERMAL INJURY (clinic)

15

After marking margins and contact on the resin, gross excess should be trimmed using ________.

Acrylic burs

16

Use _____ with correct angulation when approaching margins and use external tooth surface as a guide.

Sand discs

17

What is the most commonly used pontic design?

Modified Ridge Lap

18

For a modified ridge lap design, mark the pontic so that you are only trimming the _____ half.

Palatal

19

A hygienic pontic must float _______ above the gingiva.

1-2mm
(large end of ball-burnisher is ideal 1.5mm)

20

Hygienic pontics are used in the _______ arch and in more ______ regions.

Mandibular
Posterior

21

Connectors should be no less than ______ thick buccolingually.

3 mm

22

Vertical dimension of connectors should be ______ occlusocervically.

3-4mm

23

The cervical embrasure should be no more than _____.

1 mm

24

The "ridge lap" pontic should lightly touch the _______ and have a _______ tissue surface.

Alveolar ridge
Convex