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BDS3 Operative Dentistry > Treatment Planning for Fixed Pros > Flashcards

Treatment Planning for Fixed Pros Flashcards

1
Q

what are fixed pros restorations also called

A

indirect restorations

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2
Q

examples o fixed pros

A

veneers
onlay
inlays
crowns

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3
Q

what should you examine with the lips when looking at fixed pros

A

vermillion borders
commissures
smile line

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4
Q

what soft tissues will indicate if a patient has bruxism

A

buccal mucosa
lateral border of the tongue

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5
Q

what is the white line that can be present on the buccal mucosa as a result of bruxism called

A

linea alba

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6
Q

what needs treated and managed before starting fixed pros

A

periodontal disease

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7
Q

what is canine guidance

A

patient moves the jaw laterally as far as it goes and only canines are touching - all other
posterior teeth are not in occlusion

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8
Q

what is group function

A

patient moves jaw laterally as far as it goes and all posterior teeth are still in contact

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9
Q

what are examples of special investigations

A

sensibility testing (EPT or ethyl chloride)
radiographs
study models
facebow registration
diet diary
plaque and gingivitis indices
FMPC
photographs
biopsies

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10
Q

what are the five stages of treatment

A

immediate
initial - disease control
re-evaluation
reconstructive
maintenance

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11
Q

what factors affect the patients options for fixed pros

A

costs
time
medical issues
dentist

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12
Q

what are three examples of a tooth that is unrestorable

A

caries is down to alveolar crest - no margins
horizontal fractures along pulp floor
vertical root fractures

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13
Q

what can be used to get an existing post and core out

A

eggler device

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14
Q

what are reasons people want veneers

A

improve aesthetics
change teeth shape
correct peg laterals
reduce or close proximal spaces

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15
Q

what are contra-indications of veneers

A

poor OH
high caries
gingival recession
root exposure

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16
Q

when would you use onlays/ inlays

A

tooth wear caries
increase OVD
fractured cusps
replace failed direct restorations

17
Q

why are crowns provided

A

protect weakened tooth structure
improve or restore aesthetics
retainer for bridge work
reduce tooth function

18
Q

contra-indications of crowns

A

active caries and perio disease
more conservative options available
lack of tooth tissue for preparation
unable to provide post and core

19
Q

what are the six principles of crown preparation

A

preserve tooth structure
retention and resistance
structural durability
marginal integrity
preservation of periodontium
aesthetic considerations

20
Q

what does underpreparation of a tooth result in

A

poor aesthetics
over built crown with periodontal and occlusal consequences
restorations with insufficient thickness

21
Q

what is retention

A

prevention of removal of the restoration along path of insertion

22
Q

what is resistance

A

prevents dislodgment of the restorations by forces directed in apical or oblique direction

23
Q

what should the taper be for a crown

A

inclination of opposing walls at 6-10 degrees

24
Q

what factors affect retention and resistance in crown prep

A

taper
length of walls
path of insertion
extra means of retention (grooves and slots)

25
Q

what improves retention

A

limiting the number of paths of insertion

26
Q

what increases the number of paths of insertion

A

over-tapering the preparation

27
Q

what is structural durability achieved through

A

occlusal reduction
functional cusp bevel
axial reduction

28
Q

what does axial reduction involve

A

preparing the tooth in more than one plane - not just taking a straight line down the incisal edge

29
Q

what are the five types of marginal integrity preparations

A

knife edge
bevel
chamfer
shoulder
bevelled shoulder

30
Q

what does a chamfer bur look like

A

has a rounded tip

31
Q

what does a shoulder bur look like

A

flat bur

32
Q

what should margins of the crown restoration be

A

smooth and fully exposed to a cleaning action
placed where the dentist can finish them
placed supra-gingivally

33
Q

what is the biological width

A

distance between the very depth of sulcular epithelium and alveolar bone

34
Q

what is the dento-gingival complex

A

gingival margin to the very top of alveolar bone

35
Q

what helps you decide what material to use for crowns

A

is it for aesthetics (anterior) or functional

36
Q

what can occur if a patient is a bruxist and has had all anterior ceramic crowns positioned

A

they can wear down the opposing teeth

37
Q

what are bridge designs

A

cantilever (only held on at one side)
fixed - fixed (both sides)

38
Q

what consent should you get from a patient for fixed pros work

A

written and verbal

BDS3 Operative Dentistry (6 decks)

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