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Operative Dentistry BDS3 > Inlays, Onlays and Veneers > Flashcards

Inlays, Onlays and Veneers Flashcards

1
Q

what is an indirect restoration

A

restorations fabricated outside the mouth by technician in a laboratory

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2
Q

what are the conventional clinical stages of indirect restorations

A

preparation
temporisation
impressions and occlusal records
cementation

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3
Q

what are the 3 types of inlay

A

gold
composite
porcelain

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4
Q

where are inlays used

A

occlusal cavities
occlusal/interproximal cavities
replace failed direct restorations
minor bridge retainers

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5
Q

what are the indications for inlays

A

premolars or molars
occlusal restorations
mesio-occlusal or disto-occlusal restoration
MOD if narrow
low caries rate

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6
Q

what are the advantages of inlays

A

superior materials and margins
wont deteriorate over time

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7
Q

what are the disadvantages of inlays

A

time and cost

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8
Q

what is the temporisation process for inlays

A

make temporary restoration
take impressions and occlusal records
fit temporary restoration

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9
Q

what adhesive system is used for ceramic inlays

A

NX3 nexus

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10
Q

what adhesive system is used for gold inlays

A

aquacem

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11
Q

what are onlays

A

extracoronal restorations made in the lab
with cuspal coverage

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12
Q

what are the types of onlay

A

gold
composite
porcelain

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13
Q

what are the indications for an onlay

A

sufficient occlusal tooth substance loss
remaining tooth substance weakened

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14
Q

when would cast metal inlays/onlays be preferable to amalgam

A

higher strength needed
significant tooth recontouring required

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15
Q

what are the uses of onlays

A

tooth wear
fractured cusps
restoration of root treated teeth
replace failed direct restorations
minor bridge retainers

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16
Q

what are the tools for inlays and onlays

A

handpiece
burs
enamel hatchets
binangle chisel
gingival margin trimmers

17
Q

what happens at the first appointment for inlays/onlays

A

make reduction template
impression for temporary
tooth preparation
make temporary
impressions, bite registration and record shade
cement temporary

18
Q

what is the second appointment for inlays and onlays

A

remove temporary
isolate, clean and dry tooth
try in, assess fit and occlusion
cement
minor occlusal adjustments

19
Q

what are the alternatives to inlays/onlays

A

large direct restorations
crowns
extraction

20
Q

what is a veneer

A

thin layer of cast ceramic that is bonded to labial or palatal surface of tooth with resin

21
Q

what are the types of veneer

A

ceramic
composite
gold

22
Q

what are the indications for veneers

A

improve aesthetics
change teeth shape and contour
correct peg shaped laterals
reduce or close proximal spaces and diastemas
align labial surfaces of instanding teeth
enamel defects
discolouration

23
Q

what is intrinsic discolouration due to

A

non vital teeth
ageing
trauma
medications
fluorosis
hypoplasia or hypomineralisation
amelogenesis imperfecta
erosion and abrasion

24
Q

what are the contraindications to veneers

A

poor OH
high caries rate
gingival recession
root exposure
high lip lines
if extensive prep needed
labially positioned
extensive TSL
heavy occlusal contacts
severe discolouration

25
Q

what are the different preparations needed for veneers

A

sometimes none
cervical reduction
midfacial reduction
incisal reduction

26
Q

how big is the cervical reduction for veneers

A

0.3mm

27
Q

how big is the midfacial reduction for veneers

A

0.5mm

28
Q

how big is the incisal reduction for veneers

A

1-1.5mm

29
Q

what are the types of veneer preparations

A

feathered incisal edge
incisal bevel
intra enamel
overlapped incisal edge

30
Q

what adhesive system is used to cement veneers

A

nx3 nexus

31
Q

what is the first appointment for veneers

A

prep tooth if required
make putty index
impression for temporary
tooth preparation
make temporary
impressions, bite reg and record shade
cement temporary

32
Q

what is second appointment for veneers

A

remove temporary
isolate clean and dry tooth
try in, assess fit and occlusion
cement

33
Q

what are the alternatives to veneers

A

no treatment
micro abrasion
penetrative resin restorations
direct composite restorations
crowns

Operative Dentistry BDS3 (8 decks)

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