L7 Flashcards
Inlays
used to restore smaller lesions with a material that has a long-life span
Onlays
Used to restore larger lesions with a material that has a long life span and to shoe or support/protect cusps
Metal onlays are cemented?
True
Pros of metal onlays
retain much of natural tooth anatomy, good for patients with parafunctional habits
Cons of metal onlays
not good against porcelain. some say no aesthetic
Pros of cermic and resin onlays
reinforce tooth structure
aesthetic
Cons of ceramic and resin onlays
subject to fracture if adequate thickness is not maintained
Gold and Metal crowns
same pros and cons of onlays
Porcelain and resin crowns
pros and cons same as ceramic onlay
PFM crowns pros
aesthetic
less aggressive preparation than ceramic
multiple finish lines options
PFM crown cons
same as ceramic in terms of fragile, esthetic depends on reduciton
Finish line of crowns: Shoulder
all-ceramic crowns and facial margin of PFM crowns
Finish line of crowns: shoulder with bevel
proximal box of inlays and onlays
facial finish of metal-ceramic restorations
Finish line of crowns: Chamfer
cast metal crowns, Metal-only portion of PFM crowns
Finish line of crowns: heavy chamfer
for all-ceramic crowns. Better than conventional chamfer but NOT better than shoulder.
Bevel is added, to use with metal restoration
Finish line of crowns: Knife edge
mandibular posterior teeth with very convex axial surfaces
lingually tilted lower moalrs
Guidelines for one pontic zirconia
9 square mm in posterior
7 square mm in anterior
Guidlines for one pontic lithium disilicate
16 square mm in posterior
12 square mm in anterior
Veneers shade change dictates procelain thickness of how many MM?
0.6 mm to 0.8 mm
