Inlays, Onlays and Veneers Flashcards
what is an indirect restoration
restorations fabricated outside the mouth by technician in a laboratory
what are the conventional clinical stages of indirect restorations
preparation
temporisation
impressions and occlusal records
cementation
what are the 3 types of inlay
gold
composite
porcelain
where are inlays used
occlusal cavities
occlusal/interproximal cavities
replace failed direct restorations
minor bridge retainers
what are the indications for inlays
premolars or molars
occlusal restorations
mesio-occlusal or disto-occlusal restoration
MOD if narrow
low caries rate
what are the advantages of inlays
superior materials and margins
wont deteriorate over time
what are the disadvantages of inlays
time and cost
what is the temporisation process for inlays
make temporary restoration
take impressions and occlusal records
fit temporary restoration
what adhesive system is used for ceramic inlays
NX3 nexus
what adhesive system is used for gold inlays
aquacem
what are onlays
extracoronal restorations made in the lab
with cuspal coverage
what are the types of onlay
gold
composite
porcelain
what are the indications for an onlay
sufficient occlusal tooth substance loss
remaining tooth substance weakened
when would cast metal inlays/onlays be preferable to amalgam
higher strength needed
significant tooth recontouring required
what are the uses of onlays
tooth wear
fractured cusps
restoration of root treated teeth
replace failed direct restorations
minor bridge retainers
what are the tools for inlays and onlays
handpiece
burs
enamel hatchets
binangle chisel
gingival margin trimmers
what happens at the first appointment for inlays/onlays
make reduction template
impression for temporary
tooth preparation
make temporary
impressions, bite registration and record shade
cement temporary
what is the second appointment for inlays and onlays
remove temporary
isolate, clean and dry tooth
try in, assess fit and occlusion
cement
minor occlusal adjustments
what are the alternatives to inlays/onlays
large direct restorations
crowns
extraction
what is a veneer
thin layer of cast ceramic that is bonded to labial or palatal surface of tooth with resin
what are the types of veneer
ceramic
composite
gold
what are the indications for veneers
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
what is intrinsic discolouration due to
non vital teeth
ageing
trauma
medications
fluorosis
hypoplasia or hypomineralisation
amelogenesis imperfecta
erosion and abrasion
what are the contraindications to veneers
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
what are the different preparations needed for veneers
sometimes none
cervical reduction
midfacial reduction
incisal reduction
how big is the cervical reduction for veneers
0.3mm
how big is the midfacial reduction for veneers
0.5mm
how big is the incisal reduction for veneers
1-1.5mm
what are the types of veneer preparations
feathered incisal edge
incisal bevel
intra enamel
overlapped incisal edge
what adhesive system is used to cement veneers
nx3 nexus
what is the first appointment for veneers
prep tooth if required
make putty index
impression for temporary
tooth preparation
make temporary
impressions, bite reg and record shade
cement temporary
what is second appointment for veneers
remove temporary
isolate clean and dry tooth
try in, assess fit and occlusion
cement
what are the alternatives to veneers
no treatment
micro abrasion
penetrative resin restorations
direct composite restorations
crowns
