LAB 7

Question 1

What problems do anterior missing teeth pose?

Answer 1

1. Aesthetics
2. Retention of the saddle
3. Path of insertion difficult due to boney undercut

Question 2

What aesthetic problems do anterior missing teeth pose?

Answer 2

1. Clasps may be visible
2. Black triangles visible
3. Tooth shade, shape and position may be variable

Question 3

Why do we prefer making dentures rather than making bridges for anterior missing teeth?

Answer 3

As anterior teeth are unsuitable abutments for a pontic bridge as they have a small root surface area

Question 4

What is the path of withdrawal?

Answer 4

The direction thorns toffee pulls on average (perpendicular to the occlusal plane)

Question 5

What is the path of insertion

Answer 5

The designed path of insertion for a denture

Question 6

When designing out path of insertion what are we aiming to create

Answer 6

A path of insertion that is radically different from the path of withdrawal

Question 7

Which denture design is most favourable for mission upper anterior teeth

Answer 7

Cobalt chrome

Question 8

List the planning stages required for a cobalt chrome denture

Answer 8

1. Primary impression
2. Survey
3. Second survey
4. Design denture
5. Tooth prep and secondary impressions
6. Record occlusion
7. Wax try in
8. Construct metal framework
9. Try in metal framework incorporating wax try in
10. fit and review

Question 9

As in Kennedy class 4 dentures we lack retention anteriorly what must we do?

Answer 9

Find ways to achieve indirect retention

Question 10

How can we protect denture teeth from breaking off?

Answer 10

By adding metal backings to the denture teeth

Question 11

What does the technician need to know when placing metal backings

Answer 11

Needs to know the position of each tooth

Question 12

How many appointments can a cobalt chrome denture take to make?

Answer 12

10 ish appointments if you are considering metal backings

Question 13

When selecting a patient who may need a cobalt chrome denture what should we consider and look for

Answer 13

1. Oral hygiene
2. Periodontal status
3. Caries status
4. Motivation

Question 14

How do we assess the abutment teeth we may use for dentures

Answer 14

1. Radiographs
2. Periodontal assessment
3. Tooth contour modification
4. Potential for support

Question 15

Name the 4 principles of cobalt chrome dentures

Answer 15

1. Adequate support
2. Gingival clearance
3. Simple
4. Rigid

Question 16

What dose need to empathise to a patient once the denture has been made and given o them

Answer 16

Maintenance is very important so:

1. Regular check ups needed
2. Denture hygiene is very important
3. OHI
4. Tell patient to give particular attention to abutment teeth