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BDS3 Restorative > Inlays, Onlays and Venners > Flashcards

Inlays, Onlays and Venners Flashcards

1
Q

What are the conventional clinical stages of Indirect restorations?

A
  • Preparation
  • Temporisation
  • Impressions and occlusal records
  • Cementation
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2
Q

What is CAD-CAM?

A
  • computer-aided design & computer-aided manufacturing
  • Restorations milled from block of ceramic
  • Chairside
  • Quick ( 1 visit : prep scan and cement)
  • No temp needed
  • Accuracy questionable
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3
Q

What are inlays?

A
  • Intra-coronal restorations made in lab
  • Essentially a filling made outside the mouth
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4
Q

What are the types of inlays?

A
  • Gold
  • Composite
  • Porcelain
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5
Q

What are the uses of inlays?

A
  • Occlusal cavities
  • Occlusal/interproximal cavities
  • Replace failed direct restorations
  • Minor bridge retainers – no longer recommended
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6
Q

What are the indications if inlays?

A
  • Premolars or molars
  • Occlusal restorations
  • Mesio-occlusal or disto-occlusal restoration
  • MOD If kept narrow (If not – consider onlay)
  • Low caries rate
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7
Q

What are the advantages of inlays vs direct restorations?

A
  • Better materials and margins
  • Won’t deteriorate over time
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8
Q

What are the disadvantages of inlays?

A
  • Time
  • Cost
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9
Q

What tools are needed for inlay preparations?

A
  • Handpiece
  • Burs
    • No. 170L
    • No. 169L
    • Coarse-grit flame diamond
    • Flame (H4BL-010)
  • Enamel hatchets
  • Binangle chisel
  • Gingival margin trimmers
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10
Q

What is the inlay preparation for Ceramic inlay?

A
  • 1.5mm-2mm isthmus width
  • 1.5mm depth
  • 1mm shoulder or chamfer margin
  • Occlusal key/dovetail
  • Consider grooves for accessory retention
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11
Q

What is the lab prescription for inlays and onlays?

A
  • Pour impression
  • Mount casts on articulator
  • Construct restoration in
  • Tooth
  • Material
  • Thickness
  • Shade
  • Characteristics
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12
Q

What can you use to cement ceramic inlays and onlays?

A
  • NX3 (Nexus)
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13
Q

What are onlays?

A
  • Extra-coronal restorations made in lab
  • Inlays with cuspal coverage essentially
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14
Q

What are the types of onlays?

A
  • Gold
  • Composite
  • Porcelain
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15
Q

What are the indications for onlays?

A
  • Sufficient occlusal tooth substance loss (buccal and or palatal cusps remain)
  • Remaining tooth substance weakened by caries or pre existing large restoration
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16
Q

When are cast metal inlays/onlay preferred to amalgam?

A
  • When higher strength needed
  • Significant tooth recontouring required
17
Q

What are the uses of onlays?

A
  • Tooth wear cases to increase OVD
  • Fractured cusps
  • Restoration of root treated
  • Replace failed direct restorations
18
Q

What is the onlay preparation for porcelain?

A
  • Non working cusp 1.5mm reduction
  • Working cusp 2mm reduction
  • Proximal box if required 1mm
  • 1mm shoulder or chamfer
19
Q

What does the first appointment for inlays and onlays consist of?

A
  • LA if no RCT
  • Make reduction template
  • Impression for temp
  • Tooth prep
  • Make temporary
  • Impressions, bite registration and record shade
  • Cement temp
20
Q

What does the 2nd appointment for inlays and onlays consist of?

A
  • Remove temp
  • Isolate, clean and dry prepared tooth
  • Try in, assess fit, adaptation and occlusion
  • If happy then cement
  • Minor occlusal adjustments if needed
21
Q

What are some inlay/onlay alternatives?

A
  • Large direct restorations with amalgam/ composite/ GI
  • Crown (either 3/4 or full crown)
  • XLA
22
Q

What are veneers?

A
  • Laminate veneer is a thin layer of cast ceramic that is bonded to labial or palatal surface of a tooth with resin
23
Q

What are the types of veneers?

A
  • Ceramic
  • Composite
  • Gold
24
Q

What are some indications for veneers?

A
  • Improve aesthetics
  • Change teeth shape and / or contour
  • Correct peg shaped laterals
  • Reduce or close proximal spaces and diastemas
  • Align labial surfaces of instanding teeth
  • Enamel defects
  • Discolouration
25
Q

What are some contraindications to veneers?

A
  • Poor OH
  • High caries rate
  • Gingival recession
  • Root exposure
  • High lip lines
  • Heavy occlusal contacts
  • Sever discolouration
26
Q

What is the preparations for veneers if any?

A
  • 0.3mm cervical reduction at slight chamfer margin either supragingival or slightly subgingival
  • 0.5mm midfacial reduction
  • 1-1.5mm incisal reduction
27
Q

What are the types of veneer preparations?

A
  • Feathered incisal edge
  • Incisal bevel
  • Intra-enamel (window)
  • Overlapped incisal edge
28
Q

What is the temporisation and impression stage of veneers?

A
  • May not need but if temp needed
  • Take impressions and occlusal records and send to lab for restoration fabrication
  • Fit temp restoration
29
Q

What is an alternative approach to veneer than temporisation?

A
  • Spot bonded composite
  • No etch
  • Small spot of primer and adhesive
  • Directly apply composite
30
Q

What does the first appointment of veneers consist of?

A
  • If tooth prep required
  • LA if needed
  • Make putty index
  • Impression for temp
  • Tooth prep
  • Make temp
  • Impressions, bite registration and record shade
  • Cement temp
31
Q

What does 2nd appointment of veneers consist of?

A
  • Remove temp
  • Isolate, clean and dry prepared tooth
  • Try in, assess fit, adaptation and occlusion
  • Cement
32
Q

What are some alternatives to veneers?

A
  • No treatment
  • Micro-abrasion
  • Penetrative resin restorations e.g. ICON
  • Direct composite restorations
  • Crown

BDS3 Restorative (4 decks)

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