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partial removable > misc > Flashcards

misc Flashcards

1
Q

what should be removed before a new RPD

A

tori
exotoses
sharp mylohyoid ridhes
epulis fissarium

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2
Q

denture stomatitis

A

localized or generalized inflam of denture bearing area

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3
Q

presentation denture stomatitis

A

redness and buring area with or without discomfort

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4
Q

most likely cause of denture stomatits

A

trauma with secondary fungal infection

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5
Q

tx of stomatitis

A

improved OH
tissue rest
nystatin
resilient conditioners
new better fitting RPD

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6
Q

acute atrophic candidasis present as:

A

red atrphic patch or erythmatous and painful mucosa

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7
Q

common form of? symptoms ?

antibiotic sore mouth

A

common form of atrpophic candidasis
* oral burning
* bad taste
* sore throat with broad spec abx

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8
Q

what can also lead to atrophic candidasis

A

Fe anemia

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9
Q

chronic atrophic candidasis includes:

A

denture stomatitis

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10
Q

pap hyperplasia found where

A

palate

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11
Q

pap hyper causes

A

local irritation to poor fitting denture
poor OH
leaving in 24 hrs

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12
Q

tx pap hyper

A

educate on OH
adivse denture out at night
soak 30 min in 1% sodium hypochlorite
tissue conditioner
brush area lightly with soft brush

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13
Q

epulis fissuratum

A

inflam fibrous hyperplasia adj to border

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14
Q

cause epulis fiss

A

over extended or ill fitting flange due to long term neglect, resorption, traumatic occ via natural teeth

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15
Q

tx epulis

A

surgical removal

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16
Q

hyper tissue and new RPDS

A

must be removed prior to construction

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17
Q

tx hyper tissue

A

tissue rest
soft reline
change in habits
surgery

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18
Q

impression with hyper tissue

A

capture in passive state

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19
Q

why remove hyper before new RPD

A

provode RPD with a firm, stable base

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20
Q

kellys combo

A

refers to specific pattern bone resorb in ant maxilla due to CD opposed by man RPD

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21
Q

lose of support in combo

A

both max and man are resorbed (opposite directions)

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22
Q

combo occ forces focused where?

A

in ant sextants

23
Q

result combo syndrome

A

tipping of occ plane

24
Q

combating combo syndrome

A

continous reline or implant placement in posterior, helps to stabilize the occ plane with more equitable force distrib

25
Q

tissue conditioners

A

soft materials applied to intaglio to allow better force distrib
used to tx unhealthy/abused tissues

26
Q

tissue conditioner state

A

soft/deformable,

27
Q

tissue conditioner duration

A

about 1 week, replace every 3-5 days
will bcome solid after this and become irritant themself

28
Q

tissue conditioner composed of:

A

powder (acrylic monomer) and liquid (ethyl alc and aromatic ester) mixed to form a gel

29
Q

mechanism of how cond works

A

distrib forces and acts as a cushion

30
Q

when to apply tissue cond

A

intaglio checked with PIP, occ refined then cond placed

31
Q

how to keep cond off cameo

A

seperator applied

32
Q

distribution of cond

A

even layer added to intaglio with spatula

33
Q

seating RPD with cond in mouth

A

light finger pressure, maintain as material flows
border tissues manipulated to mold conditioner

34
Q

when using conditioner, if post artificial teeth present pt must:

A

must close teeth together while material still flowing to establish proper occ

35
Q

once cond seated and aligned pt must:

A

sit 4-5 min

36
Q

when RPD with cond out of mouth ot should:

A

submerge in cleansing solution or water, do not allow it to dry

37
Q

how is WW fabricated

A

drawing the metal from which its made into a wire

38
Q

allows?

elong % of WW

A

more than 6, allows clasps to bend

39
Q

WW vs cast metal

A

CM is any metal that is melted and cast into a mold
when casting s cold worked to provide req article it is wroght metal
mechanical properties of WW are superior to CM

40
Q

WW has ____% greater strength, hardness, tensile strength then the cast alloy it was made from

A

25

41
Q

ww flex, adjustability, toughness and ductility

A

better than CM

42
Q

success of WW clasps depends on

A

physical properties and changes that can occur in fab

43
Q

how can WW properties be compromised by the lab

A

improper heating and cooling

44
Q

too much heat and WW

A

can cause recrystalizaton or grain growth= least desireable occurance WW

45
Q

Cr-Co popularity due to:

A

low density/weight
stiffness
low cost
tarnish resistant

46
Q

Co-Cr alloys comapred to gold/palladium alloys

A

more rigid

47
Q

compostion for Co-Cr alloys

A

cobalt, chromium, nickel, carbon

48
Q

cobalt in the alloy property

A

strength, rigidness and hardness

49
Q

chromium in alloy allows:

A

corrosion and tarnish resistance

50
Q

nickel in alloys allows

A

ductility

51
Q

gold alloy flex?

A

approx 2x Co-Cr

52
Q

Co-Cr advantages

A

stiff
low cost
low weight/density

53
Q

possible cause of failure in Co-Cr alloys

A

cold working
shrinkage porosity
low % elongation
excessive C in alloy

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