Flashcards in Inlay/Onlay preps and restorations Deck (14)
What are the two major materials used in Inlays/Onlays?
What are the indications for Metal In/Onlays?
Endo treated teeth (Esp posterior)
Teeth at risk for fracture
Dental rehab with cast metal alloys
Diastema closure and occlusal plane correction
What are the contraindications for metal In/Onlays?
High caries rate
Young patients (large pulps)
Small restorations - more conservative options
What are the advantages of metal Inlays/Onlays?
Control of contours/contacts
What are the disadvantages of metal Inlays/Onlays?
Lots of apts and chair time
Splitting forcaes (inlays only)
What makes a metal Inlays/Onlays prep different than and amalgam prep?
Wider isthmus (about 2mm)
1mm interproximal clearance
What is the difference between an inlay and an onlay?
Onlays cover at least one cusp
What are the indications for a ceramic Inlays/Onlay?
Large previous restoration
What are the contraindications for ceramic Inlays/Onlays?
Heavy occlusal forces
Inability to maintain a dry field
Deep subgingival prep
What are the advantages for ceramic Inlays/Onlays?
Improved physical properties
Variety of materials/techniques
Reduced polymerizaiton shrinkage
Support of remaining tooth structure
More precise control of contours/contacts
Good tissue response
Increased auxiliary support
What are the disadvantages of ceramic Inlays/Onlays?
Ceramic is brittle
Wear of opposing dentition and restorations
Short clinical track record
Low potential for repairs
What are the different types of ceramic Inlays/Onlays?
How are ceramic Inlays/Onlay preps different from the metal ones?
Deeper (about 2mm)
No bevels - 90' exit angles
Less conservative than metal