9 functions of a provisional restorations
By Dr.Swathi Pai
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Tuesday, January 13, 2009
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pulp insulator
protects the periodontium
determines gingival tissue position at the preparation margins
maintains arch integrity
acts as a “road-test” for the final restoration
confirms esthetics of the diagnostic wax-up
confirms incisal lengths and position of teeth with regards to phonetics
a means to evaluate tooth reduction
communicates form, function, and dimensions to the lab
Polymethyl-methacrylate (PMMA)-Jet acrylic
-high strength
-best wear resistance
-the most exothermic
-high shrinkage
-low cost
Polyethyl-methacrylate (PEMA)-Snap, Trim
-moderate strength
-high wear resistance
-short term color stability
-moderate exothermicity
-moderate shrinkage
-low cost
Category: Prosthodontics Notes
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