Complete Dentures Course

Question 1

What is retention?

Answer 1

Stops something coming out

Question 2

What is stability?

Answer 2

Keeps denture in place

Question 3

What are the three main components for good retention & fourth minor component?

Answer 3

Border Seal
Saliva
Muscular forces

Accessory retention

Question 4

What is the border seal?

Answer 4

This is created in the sulcus by correct boarder moulding & by a post dam.

Question 5

What is a post dam?

Answer 5

This is a lip on the denture to create a seal on a maxillary full denture at the vibrating line (most listeria part of the hard palate).

This helps create suction.

This won’t work on the soft tissue posterior to hard palate.

Question 6

What muscular forces aid denture retention?

Answer 6

Tongue holding denture in place.

Neutral zone for denture to sit.

Question 7

How does saliva aid retention?

Answer 7

Cohesive and adhesive forces between denture and palate help keep denture in place.

Question 8

What are is accessory retention?

Answer 8

Over denture,
Implants,
Fixative

Question 9

What are problems with fixatives?

Answer 9

Contained lots of zinc and some patients experienced sink poisoning effects

Question 10

What are some symptoms of zinc poisoning?

Answer 10

Pins and needles

Nausea

Question 11

What’s a quick test for xerostomia?

Answer 11

Run finger inside cheaply should glide smoothly salivary deficiency if it sticks

Question 12

What features can a denture be given to help stabilise it?

Answer 12

Remove 7s so tongue sits on it

Question 13

Where should the occlusal plane be in relation to occlusal plane of dentures?

Answer 13

Occlusal plane lower than tongue

Question 14

What are issues with the mentalis muscle and dentures?

Answer 14

Push lower denture backwards displacing it.

Make sure this area isn’t too large to avoid this

Question 15

What is the mentalist muscle?

Answer 15

This is the elevator of lower lip and chin

Question 16

What problems can be caused by denture instability?

Answer 16

Ulceration and pain
Loss of denture
Can’t chew
Speech difficulty 
Mental thinks that a company these

Question 17

What are the main causes of denture instability?

Answer 17

Premature occlusal contacts
Change in the supporting tissue
Interferences on lateral movements

Question 18

What kind of guidance does complete dentures need?

Answer 18

Group, all teeth want to meet at the same time and be in contact on both sides in guidance

Question 19

How do you check occlusion in patient?

Answer 19

Dentures have to be held in place when checking to ensure true occlusion is measured

Question 20

What is a compensating curve?

Answer 20

This is used to check articulation is balanced

Teeth are placed on a curve not a flat plane

Curve of Wilson/monsoon

Question 21

Which articulated would you use to make a full denture?

Answer 21

Average value

Question 22

What is a flabby ridge?

Answer 22

This is very problematic it’s where the supporting bone resorbs but the ridge stays in place and is therefore very unsupportive of a denture

Question 23

What is the curve of spee?

Answer 23

This is the curved plane that the teeth is on from a side view, this is so when the jaw protrudes the teeth still stay in contact as the condyle moves the jaw lower.

Question 24

What is an immdediate denture

Answer 24

Denture made to fit the day of extractions

Question 25

What are the types of immediate denture

Answer 25

Remove all teeth and provide full dentures Remove all posteriors let heal and then remove anteriors and provide full dentures Post immediate denture - remove all teeth and wait before making a denture (rare) Progressively add teeth to partial denture

Question 26

What do you do each visit for immediate dentures

Answer 26

``` Visit one impression and extractions Secondary impressions Visit 3Record rims and record occlusion Visit 4 try in for missing teeth Extraction and fit ```

Question 27

What’s important about immediate denture fitting

Answer 27

Don’t expand bone Check occlusion Check it’s not uncomfortable because it will be numb 24h post extraction will be very uncomfortable Try not to take denture out

Question 28

When do you review immoderate dentures

Answer 28

After 1 week

Question 29

When do you review after immediate denture (after one week)

Answer 29

3 months | & 6 months

Question 30

What is a conventional flange denture

Answer 30

This is where a flange extend alll the way into the buccal sulcus

Question 31

What is a socket fitted denture

Answer 31

The teeth go slightly into the socket because the lip support of a flange would look un-natural and bulky.

Question 32

What is a part flange design

Answer 32

This is in between conventional flange and socket fitted (best of both)

Question 33

What are problems with immediate dentures

Answer 33

``` Poor fit Long term discomfort Food packing under denture Bone loss Ridge damage ```

Question 34

Where are dentures most commonly over/under extended

Answer 34

Under extended posteriorly | Overextended in the buccaneers sulci