Zinc Polycarboxylate: Ex: Duralon

By Dr. Vishaal Bhat on Wednesday 2 July 2008 with 0 comments



-composition:

-powder: ZnO & MnO

-liquid: polyacrylic acid

-compressive strength: 55-85 Mpa

-tensile strength: 8-12 Mpa

4 advantages of Zn polycarboxylate

  1. low pulpal irritation

  2. adheres to tooth

  3. low film thickness

  4. radiopaque

5 disadvantages of Zn polycarboxylate:

  1. short working time

  2. low strength

  3. high microleakage

  4. creep and plastic deformation

  5. reaction is exothermic

Category: Dental Materials Notes

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