L1: Anatomy of the edentulous maxilla Flashcards Preview

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Flashcards in L1: Anatomy of the edentulous maxilla Deck (24)
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1
Q

What are the 3 traits that result in a successful denture?

A

Support, Stability and retention

2
Q

What are the 2 primary and 1 secondary supporting areas of the maxilla?

A
Primary = Hard Palate, Posterior Ridge Crest
Secondary = Anterior Ridge Crest
3
Q

What element provides greater stability?

A

Increased contour

4
Q

Does a homologous solid have high cohesive or adhesive properties?

A

Cohesive

5
Q

What tissue type tolerates prosthesis better? Keratinized or Non-keratinized tissue?

A

Keratinized

6
Q

What is important about the mucogingival junction?

A

it is the unction seperating the keratinized, attached gingiva, and the non-keratinized, mobile gingiva

7
Q

In terms of keratinized tissue does the maxilla or mandible have more?

A

Maxilla, this creates a greater amount of support

8
Q

Where is the labial frenum? Why is it important?

A

The labial frenum is found in the maxillary and mandible at the mid-line connecting the lips to the attached gingiva. This tissue is very friable (delicate) thus it affects the shape & strength of the denture greatly

9
Q

What is a difference b/t the labial frenum and the buccal frenum?

A

The buccal frenum is located above the k9 eminence and is more broad. Multiples may also be seen

10
Q

Where is the labial vestibule found? Why is it important?

A

b/t the labial and buccal frena. It serves as a site of denture support

11
Q

Why is the buccal vestibule important? What can greatly affect the amount of surface area available for dentures in the maxillary? Mandible?

A

Buccal vestibule is located distal to the buccal frenum and serves as a support area, however, the surface area available is greatly affected by the forward movement of the coronoid process in the maxillary and the buccal muscle, which is forced forward as the masseter muscle is clenched.

12
Q

How do you determine the location of the hamular notch?

A

The hamular notch is located anterior to the hamulus and distal to the pterygoid space. It is determined via palpation with a hand mirror

13
Q

What is the Pterygomandibular Raphe?

A

A ligamentous band that attaches to the hamulus superiorly and the posterior end of the mylohyoid line of the mandible inferiorly.

14
Q

What is the fovea palatini?

A

Two holes/pits found on the hard palate just anterior to the vibrating line.

15
Q

What boundary marks the vibrating line? Why is this important?

A

The vibrating line marks the line separating the moveable and immovable portions of the soft palate. It is important to not extend a denture beyond this line or the moveable portion of the soft palate will cause the denture to have poor retention.

16
Q

Where is the incisive papilla located? Why is this spot important?

A

The incisive papilla is located just palatal b/t teeth #s 8 & 9. It overlays the incisive canal and it’s NVB so it is unable to provide much support to the denture

17
Q

How do the canine eminences affect a denture?

A

They affect the shape but more importantly, they are covered by very thin mucosa meaning that they can’t offer much support

18
Q

What is the residual ridge? What is another name for it?

A

The residual ridge is the remaining ridge of alveolar bone in an edentulous patient. This ridge is also called the alveolar ridge and is designed to hold the teeth. It is the first bone in the jaw to recede after tooth loss

19
Q

What is the maxillary tuberosity? Why might this cause difficulty for denture patients?

A

The maxillary tuberosity is a rounded eminence lieing overtop the buccal side of the maxillary molars. If horizontal excess exists it creates a lateral undercut which causes difficulty fitting dentures

20
Q

What is the ideal palate shape to maximize support?

A

The palate is a primary support site for dentures. This support is maximized when it has a broad-flat shape.

21
Q

What is the importance of the minor salivary glands found in the palate?

A

The minor salivary glands located just posterior to the line dividing the hard and soft palates is responsible for creating the posterior palatal seal, which creates a suction effect

22
Q

What are ruggae? Why can they be a problem?

A

Ruggae are the ridges at the anterior of the hard palate. They provide tactile feel, serving as a reference point for speech, however, they roughness doesn’t provide great support, therefore, the anterior palate is only classified as a secondary support area.

23
Q

Describe Angle’s Class I, II & III skeletal relationships.

A

Class I: Proper molar alignment. The lingual Class II: Overjet.
Class III: Negative overjet

24
Q

Describe the 3 classes of House’s classification of soft palate form.

A

Class I: Soft palate slopes down slowly.
Class II: Intermediate
Class III: Soft palate descends abruptly at the line with the hard palate often closing much of the airway and making it more difficult to get a palatal seal.