Impressions and Occlusion for Replica Dentures

Question 1

What are the 7 stages in conventional denture construction ?

Answer 1

Assessment.
Primary impressions.
Master impressions.
Registration.
Tooth/framework trial.
Delivery and aftercare.
Review.

Question 2

What are the 6 stages in replica denture construction ?

Answer 2

Assessment.
Replica impressions.
Secondary impressions and occlusion.
Tooth/framework trial.
Delivery and aftercare.
Review.

Question 3

What are the three objectives of a replica denture ?

Answer 3

Create replica prosthesis that is dimensionally accurate.
Should have solid base for recording working impression.
Should have occlusal and polished surfaces that can be easily modified.

Question 4

What material can be used to make modifications (not to fitting surface) to denture for replica production ?

Answer 4

Green stick.

Question 5

What are the 4 aims of secondary impressions and occlusion visit ?

Answer 5

Determine tooth position.
Take master impressions.
Record occlusion.
Select teeth and shade.

Question 6

What is the ideal freeway space ?

Answer 6

2-4mm.

Question 7

When should a facebow be used ?

Answer 7

Only partial dentures.

Question 8

What material is used for working impressions ?

Answer 8

Light body silicone impression material.
Base and catalyst paste and mixed.

Question 9

What 4 assessments should you make when reviewing working impressions ?

Answer 9

Coverage whole of denture bearing area
Sulci - rounded free from defects
Correctly shaped and extended
Width - related to the width of the patients sulcus during function