How to Take an Impression
Course Outline
This course will give you basic techniques for taking a good impression for crown prepa-rations, and dentures. Why are we constantly seeing bubbles and short margins in our impressions? Why are our finished crowns not seating when we try to insert them? The impressions are perfect. The laboratory completes the crown to fit the stone dies, but the crown does not fit the patients tooth. What happened between the laboratory and our perfect impression?
Learning Objectives
After completing this course you’ll be able to:
- Describe crown preparation.
- Discuss cord placement.
- Describe how to take an impression for an acrylic temporary crown.
- Discuss possible problems of temporary buildup.
- List materials needed for the impression.
- Describe how to take the impression.
- Discuss possible problems of a compressed impression.
- Describe the technique for bite registration.
- Compare the short wax method and acrylic bite method.
- List possible problems of doing a bite registration.
- Describe the mouth examination.
- Compare the mandibular extended denture and maxillary extended denture.
- Describe the technique for taking an alginate impression.
- State the procedure for doing a maxillary denture tray impression.
- Compare the Coe Flex and alginate maxillary impression.
- Describe the mandibular tray impression.
- List possible problems that occur when doing a mandibular tray impression.
- Compare the maxillary and mandibular pour.
- Discuss the problems that occur with a maxillary and mandibular pour.
- Describe the gag reflex.
Course Contents
Crown Impression
Cord Placement
Acrylic Temporary Crown - Impression Technique
- The Impression
- Impression Trays
- Compressed Impression
Flat Base Plate Wax Bite
- Mush Bite
- Acrylic Bite
Impression for the Extended Denture
- Mandibular Extended Denture
- Maxillary Extended Denture
- Impressions with Extensions
- Maxillary Denture Tray Impression
- Maxillary Impression
- Mandibular Tray Impression
- Mandibular Impression