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Cements, Liners, & Bases

Contributed by:

Andrea
SDH  PRCC, MS.
  1. Uses of cements, bases and liners: crowns, bridges, thermal insulators, root canal sealers, pulp capping.
  1. Bases are used as: thermal insulators.
  1. What do thermal insulators do? Protect pulp.
  1.                                 

         

IRM (Intermediate Restorative Material) I

A. Zinc Phosphate

Kind to pulp I, B, C,

B. Zinc Polycarboxylate

Durelon  B

C. Glass Ionomers

Most technique sensitive   C

D. High Strength Bases

Acts as an obtundent    I

E. Temporary fillings

Can not be used under composites  I

F. Low Strength Bases

Not Kind to Pulp   A

G. Cavity liners

Powder = zinc oxide, liquid = phosphoric acid    A

H. Varnishes

Temporary bond   I

I. Zinc Oxide Eugenol

Has potential for chemical adhesion, actually bind with tooth structure   B

 

Increase in powder it is used as a cement not a base  D

 

Theoretically stimulates secondary dentin formation   F

 

Calcium hydroxapetite, used under any restoration  G

 

Seals dentinal tubules, prevents discoloration under amalgams, not used under composites, barrier   H

 

Powder = zinc oxide, liquid =polyacrylic acid & H2O   B

 

Powder = alumino silicate glass, liquid= similar to polyacrylic acid   C

 

Dycal   F

 

Has potential for chemical reaction- bonds to calcium in teeth  C

 

Prevents secondary decay    C

 

Resins dissolved in solvents used under shallow amalgams   H

 

 

  1. Indirect pulp capping: layer between pulp and amalgam.
  1. Direct pulp capping: layer on hemorrhage, directly on pulp.
  1. Resin Cements are used for: Porcelain Veneers.
  1. Hybrid cements are a combo of: resins and glass ionomers.

Disclaimer: These notes were copied and pasted from files sent to me by Andrea.  They have not been reviewed for errors. You are responsible for checking out the information to verify the accuracy. This site, Amy Nieves and Andrea are not responsible for typographical errors.

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