Prosthodontics Chapter 50

Question 1

what are examples of a fixed prosthesis

Answer 1

inlay, onlay, crowns, bridges and veneers

Question 2

prosthesis is a

Answer 2

artificial replacment of a body part

Question 3

dental prosthesis is a

Answer 3

device or appliance that replaces one or more missing teeth & structures

Question 4

contraindications of fixed prosthodontics

Answer 4

• necessary tissues are diseased or missing
• suitable abudtment teeth are missing
• pt in poor health & or not motivated
• poor oral hygeine
• cannot afford treatment

Question 5

indicstions of a fixed prosthodontic

Answer 5

• tissues are healthy
• pt is in good health
• skill and motivation for treatment
• 1 or 2 teeth mssing in same arch

Question 6

indirect restorations are created in a ___ and are ___

Answer 6

in a lab, permanently cemeted inplace

Question 7

what material can inlays and onlays be made of

Answer 7

gold, porcelain or composite resin

Question 8

direct veneers arw AKA

Answer 8

bonded veneers

Question 9

what is opaquer

Answer 9

a substance placed on the tooth under a veneer, its not translucent or transparent and dosent let light through

Question 10

3/4 crown is covering

Answer 10

3 surfaces of anterior, 4 of posterior

Question 11

what is a soulder joint

Answer 11

where two adjacent points or a bridge are attached to eachother

Question 12

what are the 4 parts of a 3 unit bridge

Answer 12

2 crowns, abudment teeth, pontic

Question 13

what is a die

Answer 13

an exact replica of the tooth needing prosthesis

Question 14

what are the 3 ginigival margin prep designs

Answer 14

bevel, chamfer, shoulder

Question 15

bevel is a

Answer 15

anglenof anything but 90

Question 16

shoulder is

Answer 16

a 90 degree angle

Question 17

chamfer is

Answer 17

a tapered angle

Question 18

core build ups are completed on

Answer 18

vital teeth

Question 19

can a post and core be done on a vital tooth

Answer 19

no

Question 20

when is gingival retraction completed

Answer 20

after the tooth is prepped, before the final impression

Question 21

when placing retraction cords what direction is it placed and removed

Answer 21

placed clockwise. removed counter clockwise

Question 22

when would you use a smaler cord

Answer 22

on anterior teeth where tissues are thinner snd fragile

Question 23

when is it appropriate to use a two cord system

Answer 23

if the sulcus is wider and deeper

Question 24

non impregnated cords

Answer 24

do not contain chemicals. move tissues by physicsl force only

Question 25

what is an impregnated cord

Answer 25

contains an astringent to control bleeding and amount of retraction

Question 26

what kind of impregnated cord would you use on a cardio patient

Answer 26

hemodent cord. contains aluminum chloride

Question 27

hemostatic solutions are used to

Answer 27

control bleeding

Question 28

epinepherine is only safe to use in cords when

Answer 28

the patient does not have heart issues

Question 29

what instrument is used to pack cords

Answer 29

cord packer. woodson. pfi. any blunt instrument

Question 30

what are hypertrophied tissues

Answer 30

excessive gingival tissue

Question 31

what is used for surgical retraction

Answer 31

electrosurgery

Question 32

final impression is aka

Answer 32

mater impression

Question 33

what are the 4 types of elastometric materials

Answer 33

poly sulfide, poly ether, silicone, polysiloxane

Question 34

curing of elastometric materials occurs in 3 stages. those being

Answer 34

intial set, final set, final cure

Question 35

what is dimesional stability

Answer 35

the materials ability to keep shape when removed from the mouth

Question 36

deformation is

Answer 36

materials ability to resist permenant change caused by stress of removal

Question 37

permanent deformation is when

Answer 37

the material is changed and dosent return

Question 38

3 types of bite registration

Answer 38

wax bite, polysiloxane and ZOE

Question 39

what type of wax is used to add length and depth to a tray

Answer 39

utility wax

Question 40

border moulding is used to capture mucobuccal fold tissues and is completed with use of

Answer 40

sticky wax

Question 41

sol refers to the

Answer 41

solution state, prior to setting

Question 42

gel is the

Answer 42

solid state

Question 43

imbibtion is when material

Answer 43

absorbs additional water and expands

Question 44

synersis is when materials

Answer 44

lose water snd shrink

Question 45

what changed a reversible hydrocolloid back to its orginial state

Answer 45

thermal change

Question 46

hysterisis is the

Answer 46

change in temp resulting in physical change

Question 47

CAD

Answer 47

Computer aided design

Question 48

CAM

Answer 48

Computer aided manufacturing

Question 49

reversible hydrocolloids are composed of

Answer 49

85% water 15% agar

Question 50

Components of a removable partial denture

Answer 50

framework, connectors, clasps/retainers, rests

Question 51

I-clasps sit how on the teeth

Answer 51

upward towards the occlusal

Question 52

C-Clasps sit on the teeth by

Answer 52

hugging the tooth

Question 53

rests are designed in RPD to

Answer 53

prevent movement downward towards the gingiva

Question 54

On a full denture the base is the

Answer 54

part that fits over the alveolar ridge

Question 55

flange is the part of a complete denture that

Answer 55

extends over the gingival mucosa

Question 56

post dam is to

Answer 56

create a suction seal by extending toward the soft palate over the tuberosities

Question 57

Protrusion is when the mandible is

Answer 57

placed forward from centric

Question 58

retrusion is when the mandible is

Answer 58

placed posteriorly from centric

Question 59

what is lateral excrusion

Answer 59

sliding of the mandible to the left and right of centric

Question 60

what teeth do over dentures commonly sit on

Answer 60

canines

Question 61

short coping technique is used on

Answer 61

endo treated teeth

Question 62

the long coping technique removes how much natural tooth structure

Answer 62

small amount

Question 63

what is relining a denture

Answer 63

placing a new layer of resin over the tissue surface

Question 64

rebasing a denture consists of

Answer 64

replacing the entire denture base

Question 65

what are tissue condidtioners used for

Answer 65

rehabilitation of unhealthy tissues