Inlays, Onlays and Venners Flashcards
1
Q
What are the conventional clinical stages of Indirect restorations?
A
- Preparation
- Temporisation
- Impressions and occlusal records
- Cementation
2
Q
What is CAD-CAM?
A
- Restorations milled from block of ceramic
- Chairside
- Quick
- No temp needed
- Accuracy questionable
3
Q
What are inlays?
A
- Intra-coronal restorations made in lab
- Essentially a filling made outside the mouth
4
Q
What are the types of inlays?
A
- Gold
- Composite
- Porcelain
5
Q
What are the uses of inlays?
A
- Occlusal cavities
- Occlusal/interproximal cavities
- Replace failed direct restorations
- Minor bridge retainers – no longer recommended
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
7
Q
What are the advantages of inlays vs direct restorations?
A
- Better materials and margins
- Won’t deteriorate over time
8
Q
What are the disadvantages of inlays?
A
- Time
- Cost
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
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
11
Q
What is the temporisation and impression stage of inlays and onlays?
A
- Make temporary restoration
- Take impressions and occlusal records
- Send to lab for restoration fabrication
- Fit temp rest
12
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
13
Q
What can you use to cement ceramic inlays and onlays?
A
- NX3 (Nexus) RMGIC
14
Q
What are onlays?
A
- Extra-coronal restorations made in lab
- Inlays with cuspal coverage essentially
15
Q
What are the types of onlays?
A
- Gold
- Composite
- Porcelain