Pala acrylics trouble shooting guide


Find out about possible causes for e.g. bubbles, porosities or discoloration of your denture base. The Pala troubleshooting guide provides you with corrective actions to prevent trouble with denture base materials.

Bubble formation & porosities

1. Plaster model too dry.

2. Insulation not working properly.

3. Too little acylic dough in injection cylinder (Palajet)

4. Wrong polymerization time (too early or delayed insertion into the pressure pot).

5. Not enough acrylic material for pack & press technique (Paladon 65).

6. Heating up too quickly (Paladon 65).

White staining, basal

1. Insufficient wax elimination.

2. Contaminated insulating material.

3. Alcohol based separating agents on plaster / wax model. Oil-based insulating agents.

4. Insulating material for gypsum/plastic still wet - insufficient drying.

5. Wrong gypsum class type 1 or type 2 or blue plaster.

6. Plaster too cold when applying insulation.

7. Polymerization temperature too low.

8. Swelling time insufficient.

Irritation of the oral mucosa

1. Rough basal surface.

2. Polymerization time was too short or wrong polymerization temperature.

3. No water storage after completion.

4. Denture freshly relined.

5. Too much liquid used. The residual monomer content is too high.

Acrylic material doesn't cure correctly

1. Prostethic work was placed into the pressure pot too early.

2. Water temperature too low, polymerization time too short.

3. Possibly components mixed up or product contaminated.

4. Expiry date exceeded.

5. Storage of powder and liquid in refrigerator.

Poor surface finish

1. Excessive boiling out and steam cleaning

2. Insulation expired: watery, contaminated, fungal.

3. Rough plaster surface.

4. Plaster modell steaming hot.

5. White spots or particles.

Gap Building/ Rocking Denture Base

1. Pressure pot has been opened during polymerisation.

2. Insulating material was applied too thick.

3. Distortion because of thermal damage to cold-curing materials.

4. Cool down too fast + flask opened too soon.

5. Incorrect mixing ratio.

6. Steam cleaning too intense.

Discoloration denture base margin

1. White streaks (finest porosities) in indentations and undercuts (danger of insulating puddles forming).

2. Time of injection (PalaXpress&Palajet) was too early.

3. Insufficient mixing.

4. Wrong mixing ratio.

5. Bluish lines out of interdental areas into denture.

Poor adhesive bond (acrylic teeth & denture base)

1. Acrylic teeth are not roughened.

2. No Palabond was used on acrylic teeth.

3. Time between application of Palabond and further processing exceeded.

Cracks and Breakage

1. Incorrect mixing ratio of powder and liquid.

2. Flask still too hot during deflasking.

3. Tensions caused by not relining denture.

4. Incorrect contact of teeth.

  • Aislar®


    Aislar from Kulzer is an alginate based, formaldehyde free, aqueous solution for the separation of plaster surfaces from denture acrylic and composites.

  • PalaXpress®


    PalaXpress is the universal denture acrylic for a wide range of indications and precise fit. It can be processed by using traditional methods (pouring and injection procedure).

  • Paladon® 65

    Paladon® 65

    Paladon 65 is easy to process. Its excellent plastic consistency allows the dough to be packed very easily.

  • New



    With PalaXtreme you get an cold curing acrylic with high-impact strength. The “core shell technology” minimises the risk of fractures.

  • Palaferm®


    Insulation of acrylics and acrylic models as well as suitable for the insulation of plaster.

  • Palapress® vario

    Palapress® vario

    Palapress vario with its very long processing time is ideal for the pouring technique, particularly for multiple opposing saddles.

  • Palabond®


    Firm adhesion: Palabond adhesion promoter ensures a permanent bond between tooth and denture base – the basis for long denture life.