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BDS3 OPERATIVE TECHNIQUES > 2 - Inlays, onlays and veneers > Flashcards

2 - Inlays, onlays and veneers Flashcards

1
Q

What are the clinical stages of indirect restorations?

A
  • prep
  • impression and occlusal records
  • temporisation
  • cementation
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2
Q

What is an inlay?

A
  • intra-coronal restoration made in the lab
  • “filling made out of the mouth”
  • no cuspal coverage
  • used in occlusal ± interproximal cavities, to replace failed direct restorations
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3
Q

What are the different materials used for inlays?

A
  • composite
  • porcelain
  • gold
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4
Q

What are the different materials used for onlays?

A
  • composite
  • porcelain
  • gold
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5
Q

What are the different materials used for veneers?

A
  • composite
  • porcelain
  • gold
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6
Q

What are indications for inlays?

A
  • premolars or molars
  • occlusal restorations ± mesio- or disto-
  • can be used in MOD if isthmus is narrow
  • low caries rate
  • no cuspal coverage required
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7
Q

What are advantages of inlays?

A
  • superior margins and materials
  • do not deteriorate over time
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8
Q

What are disadvantages of inlays?

A
  • time
  • cost
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9
Q

What burs are used to prepare inlays?

A
  • No. 170L
  • No.169L
  • coarse-grit flame diamond
  • flame
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10
Q

What burs are used to prepare onlays?

A
  • No. 170L
  • No.169L
  • coarse-grit flame diamond
  • flame
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11
Q

What is the preparation for a ceramic inlay?

A
  • 1.5-2mm isthmus
  • 1.5mm depth
  • 1mm shoulder/chamfer margin
  • butt-joint cavosurface margins (no bevel)
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12
Q

What is the preparation for a gold inlay?

A
  • 1mm isthmus
  • 1.5mm depth
  • 0.5mm chamfer margin
  • 15-20 degree bevel upper 1/3 of isthmus wall
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13
Q

What are direct temporary materials that can be used to temporise preparations?

A
  • Protemp
  • kalzinol (ZOE)
  • clip (composite)
  • GI
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14
Q

What do you use to cement ceramic inlays?

A
  • NX3
  • RelyX (RMGI)
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15
Q

What do you use to cement ceramic onlays?

A
  • NX3
  • RelyX (RMGI)
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16
Q

What do you use to cement gold inlays?

A
  • AquaCem
  • Panavia
  • RelyX (RMGI)
17
Q

What do you use to cement gold onlays?

A
  • AquaCem
  • Panavia
  • RelyX (RMGI)
18
Q

What is an onlay?

A
  • extra-coronal restoration made in lab
  • has cuspal coverage
19
Q

What are indications for onlays?

A
  • sufficient occlusal tooth loss
  • buccal ± palatal/lingual cusps remaining
  • remaining tooth tissue weakened (eg caries)
  • pre-existing large restoration (MOD with wide isthmus)
  • when strength is required (ie bruxism)
20
Q

When are onlays used?

A
  • tooth wear cases to increase OVD
  • fractured cusps
  • restoration of RCT teeth
  • replace failed direct restorations
21
Q

What is the preparation for a ceramic onlay?

A
  • working cusp 2mm reduction
  • non-working cusp 1.5mm reduction
  • 1.5mm depth
  • butt-joint cavosurface margin (no bevels)
  • 1mm shoulder/chamfer margin
  • 1mm proximal box clear of contact points
22
Q

What is the preparation for a gold onlay?

A
  • non-working cusp 0.5mm reduction
  • working cusp 1mm reduction
  • 1.5mm depth
  • 15-20 degree bevel upper 1/3 isthmus wall
  • 0.5mm chamfer margin
  • 1mm proximal box clear of contact points
23
Q

What is the first appointment for inlays/onlays?

A
  • LA (if not RCT)
  • reduction template
  • impression for temp
  • tooth prep
  • make temp
  • bite reg and record shade
  • cement temp
24
Q

What is the first appointment for veneers?

A
  • LA (if into dentine/anxious)
  • reduction template
  • impression for temp
  • tooth prep
  • make temp
  • bite reg and record shade
  • cement temp
25
Q

What is the second appointment for inlays/onlays?

A
  • remove temp
  • isolate, clean and dry tooth
  • try in and assess fit
  • cement if happy
  • any minor occlusal adjustments
26
Q

What is the second appointment for veneers?

A
  • remove temp
  • isolate, clean and dry tooth
  • try in and assess fit
  • cement if happy
  • any minor occlusal adjustments
27
Q

What are alternatives to inlays/onlays?

A
  • large direct restoration
  • crowns
  • extraction
28
Q

What are indications for veneers?

A
  • improve aesthetics
  • change teeth shape, colour or contour
  • correct peg laterals
  • reduce or close interproximal spaces
  • align labial surfaces of instanding teeth
  • enamel defects
29
Q

What are contraindications for veneers?

A
  • poor OH
  • high caries rate
  • gingival recession/root exposure
  • high smile line
  • if extensive prep required
  • teeth outwith the arch
  • extensive NCTSL
  • heavy occlusal contacts
  • severe discolouration
30
Q

What is the preparation for veneers?

A
  • can be none
  • 0.3mm cervical reduction with slight chamfer margin
  • 0.5mm midfacial reduction
  • 1-1.5mm incisal reduction
31
Q

What are the different types of veneer preparation?

A
  • feathered incisal edge
  • incisal bevel
  • intra-enamel (window)
  • overlapped incisal edge
32
Q

What is the Gurel technique?

A
  • mock up created
  • putty impression taken and compared to dentition before preparation
  • relevant teeth prepared
33
Q

How can you temporise veneer prep?

A
  • may not require temp if enamel is thick enough
  • spot bonded composite build up (no etch, small dot of bond and composite applied)
  • temporary veneer (Protemp)
34
Q

What do you use to cement a veneer?

A
  • NX3
  • RelyX Unicem
35
Q

What are alternatives for veneers?

A
  • no treatment
  • microabrasion
  • penetrative resin restorations
  • direct composite restoration
  • crowns

BDS3 OPERATIVE TECHNIQUES (7 decks)

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