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dental assisting mda > Prosthodontics Chapter 50 > Flashcards

Prosthodontics Chapter 50 Flashcards

1
Q

what are examples of a fixed prosthesis

A

inlay, onlay, crowns, bridges and veneers

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2
Q

prosthesis is a

A

artificial replacment of a body part

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3
Q

dental prosthesis is a

A

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

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4
Q

contraindications of fixed prosthodontics

A
  • necessary tissues are diseased or missing
  • suitable abudtment teeth are missing
  • pt in poor health & or not motivated
  • poor oral hygeine
  • cannot afford treatment
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5
Q

indicstions of a fixed prosthodontic

A
  • tissues are healthy
  • pt is in good health
  • skill and motivation for treatment
  • 1 or 2 teeth mssing in same arch
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6
Q

indirect restorations are created in a ___ and are ___

A

in a lab, permanently cemeted inplace

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7
Q

what material can inlays and onlays be made of

A

gold, porcelain or composite resin

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8
Q

direct veneers arw AKA

A

bonded veneers

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9
Q

what is opaquer

A

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

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10
Q

3/4 crown is covering

A

3 surfaces of anterior, 4 of posterior

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11
Q

what is a soulder joint

A

where two adjacent points or a bridge are attached to eachother

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12
Q

what are the 4 parts of a 3 unit bridge

A

2 crowns, abudment teeth, pontic

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13
Q

what is a die

A

an exact replica of the tooth needing prosthesis

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14
Q

what are the 3 ginigival margin prep designs

A

bevel, chamfer, shoulder

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15
Q

bevel is a

A

anglenof anything but 90

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16
Q

shoulder is

A

a 90 degree angle

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17
Q

chamfer is

A

a tapered angle

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18
Q

core build ups are completed on

A

vital teeth

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19
Q

can a post and core be done on a vital tooth

A

no

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20
Q

when is gingival retraction completed

A

after the tooth is prepped, before the final impression

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21
Q

when placing retraction cords what direction is it placed and removed

A

placed clockwise. removed counter clockwise

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22
Q

when would you use a smaler cord

A

on anterior teeth where tissues are thinner snd fragile

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23
Q

when is it appropriate to use a two cord system

A

if the sulcus is wider and deeper

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24
Q

non impregnated cords

A

do not contain chemicals. move tissues by physicsl force only

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25
Q

what is an impregnated cord

A

contains an astringent to control bleeding and amount of retraction

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26
Q

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

A

hemodent cord. contains aluminum chloride

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27
Q

hemostatic solutions are used to

A

control bleeding

28
Q

epinepherine is only safe to use in cords when

A

the patient does not have heart issues

29
Q

what instrument is used to pack cords

A

cord packer. woodson. pfi. any blunt instrument

30
Q

what are hypertrophied tissues

A

excessive gingival tissue

31
Q

what is used for surgical retraction

A

electrosurgery

32
Q

final impression is aka

A

mater impression

33
Q

what are the 4 types of elastometric materials

A

poly sulfide, poly ether, silicone, polysiloxane

34
Q

curing of elastometric materials occurs in 3 stages. those being

A

intial set, final set, final cure

35
Q

what is dimesional stability

A

the materials ability to keep shape when removed from the mouth

36
Q

deformation is

A

materials ability to resist permenant change caused by stress of removal

37
Q

permanent deformation is when

A

the material is changed and dosent return

38
Q

3 types of bite registration

A

wax bite, polysiloxane and ZOE

39
Q

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

A

utility wax

40
Q

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

A

sticky wax

41
Q

sol refers to the

A

solution state, prior to setting

42
Q

gel is the

A

solid state

43
Q

imbibtion is when material

A

absorbs additional water and expands

44
Q

synersis is when materials

A

lose water snd shrink

45
Q

what changed a reversible hydrocolloid back to its orginial state

A

thermal change

46
Q

hysterisis is the

A

change in temp resulting in physical change

47
Q

CAD

A

Computer aided design

48
Q

CAM

A

Computer aided manufacturing

49
Q

reversible hydrocolloids are composed of

A

85% water 15% agar

50
Q

Components of a removable partial denture

A

framework, connectors, clasps/retainers, rests

51
Q

I-clasps sit how on the teeth

A

upward towards the occlusal

52
Q

C-Clasps sit on the teeth by

A

hugging the tooth

53
Q

rests are designed in RPD to

A

prevent movement downward towards the gingiva

54
Q

On a full denture the base is the

A

part that fits over the alveolar ridge

55
Q

flange is the part of a complete denture that

A

extends over the gingival mucosa

56
Q

post dam is to

A

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

57
Q

Protrusion is when the mandible is

A

placed forward from centric

58
Q

retrusion is when the mandible is

A

placed posteriorly from centric

59
Q

what is lateral excrusion

A

sliding of the mandible to the left and right of centric

60
Q

what teeth do over dentures commonly sit on

A

canines

61
Q

short coping technique is used on

A

endo treated teeth

62
Q

the long coping technique removes how much natural tooth structure

A

small amount

63
Q

what is relining a denture

A

placing a new layer of resin over the tissue surface

64
Q

rebasing a denture consists of

A

replacing the entire denture base

65
Q

what are tissue condidtioners used for

A

rehabilitation of unhealthy tissues

dental assisting mda (35 decks)

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