1. PowerPoint® Presentation for Dental Materials with Labs
Module:
Laboratory Materials and Techniques: Alginate Impression Material
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2. Laboratory Materials and Techniques: Alginate Impression Material
Module: Laboratory Materials and Techniques: Alginate Impression Material
Laboratory Materials and Techniques: Alginate Impression Material
Part A: Alginate Impression Material
Part B: Bite Registration
Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.

3. Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.
Module: Laboratory Materials and Techniques: Alginate Impression Material
Learning Objectives
1. Define the Key Terms.
2. Identify materials used in the dental lab
and perform associated procedures.
3. Demonstrate the knowledge and skills
necessary to prepare, take, and remove
alginate impressions and wax bites.
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Key Terms
Accelerates
Articulator
Calcination
Catalyst
Distortion
Exothermic
Gel
Gypsum
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5. Part A: Alginate Impression Material
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Alginate
Economical
Rapid setting
Powder/water ratio
Accurate
Sol
Bowls
Syneresis
Gel
Spatulas
Imbibition
Setting time
Trays
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Impression Set-up
Alginate material
Mixing bowl
Spatula
Water-measuring device
Trays
Wax
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Taking the Impression
Try tray in patient’s mouth
Mix material
Remove excess material
Place gently in patient’s mouth
Hold until set
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Taking the Impression
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10. Removing the Impression
Ensure material is set
Carefully rock tray back and forth
Keep fingers steady to protect teeth
Give patient wet paper towel for face
Check impression for landmarks
Rinse impression
Disinfect impression
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11. Part B: Bite Registration
Wax
Polysiloxane
Relationship of
maxillary
to mandibular
arch
Accurate
occlusal
relationship
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Assessment Questions
Is alginate material is a Reversible Hydrocolloid?
It is irreversible.
Is the term for when an alginate impression loses water is known as syneresis?
Yes.
Is the alginate tray should be tried in the patient’s mouth before mixing and loading the material?
The tray should be tried in empty.
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13. Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.
Summary of Module
Key Terms
Alginate impression material
Bite registration
Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.