Q1, E1 L3b FMC, 4 Tissue Mgmt, 4b Impress, 4c Cast,Dies

Question 1

Crowns are EXPONENTALLY more _____ and _____ than partial crowns.

Answer 1

retentive and resistent

Question 2

What are the 4 materials we discussed for a crown build up?

Answer 2

amalgam (Dr. P’s preference)…G.I…..Composite resin…Cast Gold

Question 3

When viewed with ______ from a distance of ___ inches, all the axial surfaces of a preparation with an ideal taper or angle of convergence of 6 degrees can be seen.

Answer 3

one eye…12 in

Question 4

Cool features that can be used in a FMC prep: Functional Cusp Bevel for

Answer 4

structural durability

Question 5

Cool features that can be used in a FMC prep: Seating groove for

Answer 5

retention and resistance

Question 6

Cool features that can be used in a FMC prep: Planar occusal reduction for

Answer 6

structural durability

Question 7

Cool features that can be used in a FMC prep: axial reduction for

Answer 7

retention and resistance

Question 8

Reading the BURS: Green

Answer 8

Coarse

Question 9

Reading the BURS: Red

Answer 9

Fine

Question 10

Reading the BURS: What does the 6 at the beginning of 6856.016 indicate?

Answer 10

coarse

Question 11

Reading the BURS: What do the last 3 digits indicate in 6856.31.016?

Answer 11

widest diameter = 1.6mm

Question 12

What does the “8” in 8856.012 stand for?

Answer 12

Ultra Fine

Question 13

Packing instruments: ________ heads: commonly used with braided cords as the fine serrations on the head of the instrument sinks into the braided cord and keep it from slipping off

Answer 13

Serrated circular

Question 14

Packing instruments: _________ heads can be used to place and compress twisted cord with a sliding motion

Answer 14

Smooth, non-serrated circular

Question 15

A minimum of ____ mm thickness in the sulcus area has to be maintained to make an undistorted impression with polyvinyl siloxane impression material….Requires at least ___ minutes of retraction

Answer 15

0.2 mm…4 min

Question 16

Non-impregnated cord: Mechanically stretches the __________ periodontal fibers

Answer 16

circumferential

Question 17

What are the 4 types of impregnated cord? WHICH cord turns the gingiva orange?

Answer 17

1.Epi 2.Al SO4 3.Ferric Sulfate (orange) 4.Al Cl

Question 18

Which cord causes more damage to the tissue? impregnated or non?

Answer 18

non-impregnated causes damage and pain

Question 19

What type of Epi has emerged as the most popular to put in the impregnated cord?

Answer 19

8% racemic epinephrine has emerged as the most popular chemical for gingival retraction

Question 20

Which cord is contraindicated with PVS because Inhibits settting???

Answer 20

Aluminum Chloride!

Question 21

In the 2 cord technique: The first cord placed is the ______, however, select the ______ cord that will fit below the finish line

Answer 21

smallest…largest

Question 22

What is the situation that Displacement Paste is not a good option to retract the gingiva?

Answer 22

less effective with very sub gingival margins

Question 23

What are the 3 requirements when doing electrosurgery to show your margin?

Answer 23

1.NO nitrous oxide (flammable) 2.NO pacemakers 3.Need MOIST environment

Question 24

What type of mirror do you have to use with electrosurgery?

Answer 24

plastic mirror

Question 25

Er:YAG laser is not as good at hemostasis as ____ laser

Answer 25

CO2

Question 26

Whats the main downside to rotary curetteage?

Answer 26

causes lots of bleeding

Question 27

Malone and Manning found no difference in healing between conventional surgery and ___________.

Answer 27

electrosurgery

Question 28

There are circumstances in which it may be desirable to have a longer clinical crown on a tooth than is present: Length for retention, Violation of biological width, Place margin more accessible for cleaning…WHATS IT CALLED?

Answer 28

Crown Lengthening

Question 29

When adding impression material around the prep…Syringe wash around prepped tooth while tray is being loaded. Work from _______ TO ______/______ surface. Keep syringe tip within impression material and push material forward

Answer 29

margins to occlusal/incisal

Question 30

How long do you leave the PVS impression in the mouth?

Answer 30

5 minutes minimum

Question 31

THERE IS ONLY 1 disinfectant that can be used for ALL the impression materials:

Answer 31

Chlorine Compounds! (1:10 dilution of commercial bleach)

Question 32

The replica of the prepared teeth, ridge areas, and other parts of the dental arch

Answer 32

Definitive/Master/Working Cast

Question 33

PreReq’s for Master Cast: 1. It must reproduce both _______ and unprepared tooth surfaces. 2. The unprepared teeth immediately adjacent to the preparation must be free of _____. 3. All surfaces of any teeth involved in anterior guidance and the occlusal surfaces of all unprepared teeth must allow for precise ________ of the opposing casts. 4. All relevant soft tissues should be reproduced in the definitive cast, including all ________.

Answer 33

prepared…. voids….. articulation… edentulous

Question 34

The positive reproduction of the prepared tooth and consists of a suitable hard substance of sufficient accuracy

Answer 34

Master Die

Question 35

Master Die PreReq’s: 1.It must reproduce the _______ tooth exactly. 2.All surfaces must be accurately duplicated, and no _______ or ______ can be accepted. 3.The remaining unprepared tooth structure immediately cervical to the finish line should be easily discernible on the die, ideally with ____ to _____ mm visible (enough must be present to help the technician establish the correct cervical contour of the restoration) 4.Adequate access to the _______ is imperative.

Answer 35

prepared….bubbles or voids….0.5 to 1 mm… margin

Question 36

Type I Gypsum

Answer 36

Impression Plaster

Question 37

Type II Gypsum

Answer 37

Model Plaster

Question 38

Type III Gypsum

Answer 38

Dental Stone

Question 39

Type IV Gypsum

Answer 39

High-strength, low expansion dental stone

Question 40

Type V Gypsum

Answer 40

High-Strength, high expansion stone

Question 41

Plaster is weaker than dental stone due to: 1.) _______ of the particles, requiring more water for a plaster mix
2.) irregular shapes of _____ prevent them from fitting together tightly

Answer 41

porosity… particles

Question 42

Stone is the α ________ form….Dense, regularly shaped, relatively ________ cuboidal crystal material….require less water, and are approximately ____ times stronger than plaster

Answer 42

hemihydrate… nonporous… 2.5

Question 43

2 Stage Pour: First Pour is the _______. Second Pour is the ______.

Answer 43

Impression… base