PROS- Partial dentures

Question 1

How do missing teeth affect a patient’s facial appearance?

Answer 1

The loss of teeth causes jawbone resorption.This causes patient’s maxilla to move backwards and the patients mandible to move forwards.

Question 2

Why does alveolar resorption occur?

Answer 2

There is a lack of downwards pressure on the alveolar bone due to tooth loss which causes bone loss.

Question 3

What are A, B and C and describe them

Answer 3

A- The retainer (The metal wing that attaches to the neighbouring tooth)

B- The pontic (the fake tooth)

C- The abutment tooth (The tooth the retainer goes on)

Question 4

What type of bridge is this?

Answer 4

A mesial cantilever.

Question 5

What type of bridge is this?

Answer 5

A fixed fixed bridge

Question 6

Compare the difference between a mesial cantilever and a fixed fixed bridge.

Answer 6

A mesial cantilever is only supported by one tooth, so has 1 retainer.

a fixed fixed is supported by two teeth, so it has 2 retainers.

Question 7

What is the saddle?

Answer 7

The area in the mouth which has no teeth.

Question 8

What type of saddle is this?

Answer 8

A Free end saddle

There are no teeth at the end.

Question 9

What type of saddle is this?

Answer 9

A bounded saddle-

Where the gap has teeth on either side.

Question 10

Discuss tooth borne support?

Answer 10

Tooth borne is when everything rests on the teeth rather than the soft tissue.

This is the most desirable as it prevents tissue damage.

Question 11

Discuss mucosa borne support?

Answer 11

Mucosa borne support is where everything rests on the mucosa.

These dentures are replacing lots of teeth

Question 12

Describe a denture patient assessment.

Answer 12

1. Full denture history- Why do they have dentures/how long for/ how many/ denture preferences.
2. Medical history
3. Social history
4. Examination (of patient and denture seperately then together)

Question 13

Why is knowing how the patient lost their teeth beneficical for producing dentures?

Answer 13

If the patient lost their teeth due to periodontal disease this will cause the ridges to change quicker. You want to know this.

Question 14

Describe these missing teeth using kennedy class:

Answer 14

Kennedy class I

This is a bilateral free end saddle

(free end on both sides= bilateral)

Question 15

Describe these missing teeth using kennedy class:

Answer 15

This is kennedy class II.

This is a unilateral free end saddle.

Question 16

Describe these missing teeth using kennedy class:

Answer 16

This is kennedy class III.

This shows a unilateral bounded saddle.

Question 17

Describe these missing teeth using kennedy class:

Answer 17

This is kennedy class IV.

This is a anterior bounded saddle.

(The saddle crosses the midline and is surrounded by teeth)

Question 18

Describe these missing teeth using the craddock class:

Answer 18

This is Craddock class I.

This is tooth borne support.

Question 19

Describe these missing teeth using craddock class:

Answer 19

This is craddock class II.

This is mucosa borne support

This is where the vertical biting force is against the soft tissue saddle.

Question 20

Describe these missing teeth using craddock class:

Answer 20

This is craddock class III

This is mixed tooth and mucosa borne support.

1 saddle is supported by teeth, the other is a free-end.

Question 21

What are the three main things we consider when looking at dentures?

Answer 21

1. Support- does the denture resist movement vertically towards the tissue? (Does the denture push up towards the tissue)
2. retention- is the denture easily displaced away from the tissue?​ (Can the denture be moved away from the tissue easily)
3. Stability- Does the denture resist horizontal movement. (Can the denture be moved from side to side?)

Question 22

What is this picture showing? and discuss it

Answer 22

This is denture stomatitis.

This is a mixed infection of bacteria and yeast caused by wearing a denture all the time. The exact shape of the denture is showing the gum at A.

Question 23

What is partial edentiulism?

Answer 23

This describes a patient with some but not all teeth missing in the arch

Question 24

What is shown in this clinical image?

Answer 24

Combination syndrome.

This is when the patient has a flabby area of tissue due to a complete upper denture biting against real lower teeth,