Glass Ionomer Liner/Base Indications

By Dr. Vishaal Bhat on Friday 9 May 2008 with 0 comments



. Over CaOH2 (if applicable) under amalgam alloys.

2. Dentin liner under composite resin.

3. Blocking out undercuts on casting preparations.

4. Sealing of root canal before non-vital bleaching.

5. Technique:

a. Smear layer removal.

b. Apply liner when glossy!

6. Composite/ionomer Class 5:

a. Place groove at 1/2 gingival wall with 1/4 or 33 1/2 bur.

b. Remove the dentin smear layer with polyacrylic acid or ADA approved substitute. (delete this step for glass ionomer/resin liners)

c. Place glass ionomer liner over exposed dentin and up to gingival cavosurface margin.

d. Bevel occlusal enamel (1mm).

e. Acid etch enamel margin and glass ionomer liner for 20 seconds. Rinse for 20 seconds. (Not necessary to etch glass ionomer/resin liners)

f. Apply bond agent(s).

g. Cure composite resin in two (2) increments. Place the incisal increment first and cure for 30 seconds. Then, add the gingival increment and cure for an additional 30 seconds.

Category: Prosthodontics Notes

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