Anatomy of Denture bearing Area - maxilla Flashcards

1
Q

What can destabilise the denture?

A

Muscles, during swallowing or eating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the astrix showing?

A

These points are not static, the change with teh muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What other structures can have an effect on the denture?

A

Ligaments, frenulum and glandular tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Can the pterygomandibular raphe affect the denture?

A

Yes, when opening mouth it may impede on it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What effect does the labial Freya have on the denture?

A

Different to buccal frenulum

Said to contain no muscle fibres but CT

It may destabilise the denture

If there is no relief for the labial frena, may cause trauma and ulceration - not so much destabilisation of denture but trauma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Can a space for the labial frena affect the denture?

A

Yes, it can cause a midline fracture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do you relieve the denture at the labial frena?

A

Make it a U shape instead of a V shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Do you sometimes have to surgically remove the labial frena?

A

Yes, if it is particularly large

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What area is beyond the 3rd molar?

A

Retromolar pad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the role of the retromolar pad in dentures

A

Contains glandular tissue

Compressible tissue

Are can be shed for retention

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How much of the retromolar pad shows k the denture be extended to?

A

About half

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is shown here?

A

Retromolar pad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Do you consider the maxillary denture/dentition with the retromolar pad?

A

Yes - the heel will ht against it when the mouth is closed and destabilise denture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How do you know the maxillary denture is destabilised?

A

Dropping of anterior portion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does the coronoid process lie in relation to the maxillary?

A

Lies lateral to the maxillary tuberosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What can the coronoid process impead on? What does this cause ?

A

Sometimes impead on the buccal flange o a denture and case pain or instability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Where does the coronoid process go when you open the mouth?

A

Towards 3rd molar

Impead on the flange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What happens of the buccal flange is to thick?

A

When you open the mouth the coronoid notch will impeded on it, cause pain form tissues ver coronoid notch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Can the coronoid notch destabilise the denture?

A

Yes

20
Q

What should you measure to avoid the coronoid notch impending on the buccal flange?

A

Depth and width characteristics

21
Q

What is the hamular notch?

A
22
Q

Where is the hamular notch located?

A

The notch is the junction of the maxillary tuberosity and hamular process.

Periphery of a correctly extended denture should extend through these notches via the area of the fovea palatinae

23
Q

What is the importance of teh hamular notch?

A

Needs to be incorporated in the impression and that needs to be shown by the blue impression shown.

Capture it to obtain the peripheral seal - good suction

24
Q

If a pt comes to you with a loose denture, what area would you look at?

A

Hamular notch area

Need to capture the full depth of the area

25
Q

What seal does the hamular notch allow?

A

Peripheral seal

26
Q

What is shown here?

A

Palatine fovae

27
Q

What is the fovae palatinae?

A

Pair of mucous gland duct orifices near the midline at the junction of the hard and soft palate

28
Q

What do the fovae palatine provide?

A

Provide a guide to the position of the posterior palatal border of the denture

29
Q

Where is the fovae palatinae located?

A

Between the hard an soft palate

30
Q

What is the vibrating line?

A

Tell pt to say AHHHH

Soft palate will vibrate

31
Q

Where does the denture need to extend to capture the fovae palatinae?

A

Vibrating line

32
Q

What does captured the vibrating line (palatine fovae) allow?

A

Posterior peripheral seal and retention for denture

Suction oof denture

33
Q

How do you know where the incisors should be on an edentulous pt?

A

Incisive papilla

Mass of fibrous tissue behind the upper incisors

34
Q

Alma gauge?

A

Devise to set where the anterior teeth should sit in an edentulous pt

35
Q

What is the role of the rugae?

A

Articulation of sound

Mastication - rough palate

Are like finger prints - they are similar to finger prints - unique

Dentures…

Used to determine where to put the cane teeth

Need to have in the impression - to make sure the new dentition does not damage them

36
Q

Posterior palatal seal?

A

At the vibrating line

On the denture this is the posterior palatal seal

37
Q

When is the residual ridge irregular?

A

Teeth extracted at different times

38
Q

What is the residual ridge?

A

Height, width, form, thickness and consistency

39
Q

What does the shape of the palatal vault affect?

A

Retention of the denture

Resistance to lateral displacement

Tongue space

40
Q

What is tori?

A

Torus palatines

A bony enlargement (hyperostosis) occurring in th midline of the hard palate in about 20% of the population

41
Q

How would you accommodate palatal torus?

A

Or surgical excision

42
Q
A

A = buccal frenum

B = retro-zygomatic area

43
Q
A
44
Q
A
45
Q

What does the size of the buccal sulcus depend upon?

A

Contraction of buccinator muscle

Position of the mandible

Amount of bone loss

46
Q

Where does the buccal sulcus extend from and to?

A

Extends from the buccal frenum to hamular notch

47
Q

Mucoperiosteum?

A

Mucosa attached to the periosteum and underlying tissue