9 functions of a provisional restorations

By Dr.Swathi Pai on Tuesday, January 13, 2009 with 0 comments

  1. pulp insulator

  2. protects the periodontium

  3. determines gingival tissue position at the preparation margins

  4. maintains arch integrity

  5. acts as a “road-test” for the final restoration

  6. confirms esthetics of the diagnostic wax-up

  7. confirms incisal lengths and position of teeth with regards to phonetics

  8. a means to evaluate tooth reduction

  9. 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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