Q2 Lecture 8. Edentulous Anatomy Flashcards
2
What direction is maxillary tooth loss in?
2
What direction is mandibular tooth loss in?
3
What is the result of residual ridge resorption?
6
What are the two primary support structures on the maxilla?
6
What are the two primary support structures on the mandible?
1
Labial Frenum
2
Labial Vestibule
3
Buccal Frenum (left) and Buccal Notch (right)
4
Buccal Vestibule
5
Corono-maxillary Space
6
Alveolar Ridge (left) and Alveolar Groove (Right)
7
Maxillary Tuberosity
8
Hamular Notch
9
Posterior Palatal Seal
10
Fovea Palatini
11
Median Palatine Raphe
12
Incisive Papilla
13
Rugae
14
Displaceable Soft and Hard Outline of Butterfly of Posterior Palatal Seal
8
Frenum are high folds of what?
8
Do frenum contain significant muscle fibers?
8
How will high frenum attachments affect denture retention?
8
High frenum attachments may require what?
8
When the buccal vestibule is properly filled with the denture flange is greatly enhances ____ and _____.
9
What does the canine eminence provide for dentures?
9
What type of arch is best for denture stability?
9
What type of connective tissue is the incisive papilla? What does it overlie?
9
Why does the denture need to be relieved over the incisive papilla?
10
The tuberosity is an important _______.
10
Tuberosities provide resistance to what movement of the denture?
10
Where and what is the posterior palatal seal?
11
What does rugae resist?
11
Are rugae a primary or secondary support area?
11
The hamular notch extends from what two things?
11
What attaches to the pterygoid hamulus?
11
What two things can improper molding of the hamular notch lead to?
12
The patient is allowed to open wide, protrude, and go into the lateral movements. What will be contoured by the anterior border of the coronoid process?
12
Where are the fovea palatina located?
12
Where are the minor salivary glands? Are they glandular and displaceable?
13
The zygomatico-alveolar crest has been linked to the _____ in the mandible as a _____ area. However, the mucosal coverage is thin and is not considered desirable for this purpose.
14
14
What does the hard palate consist of?
14
What does the hard palate resist?
14
Is the hard palate a primary support area for maxillary dentures?
14
Why is the configuration of a high hard palate not conducive to the stability and support of a denture?
14
Where does the midline palatal suture extend from?
14
Why is relief required around the midline palatal suture?
14
Is the bone dense under the midline palatal suture?
14
What two things exit through the major palatine foramen?
14
Is relief required for the major palatine foramen?
15
For an ideal maxillary ridge, what shape do you want in cross section?
1
Labial Frenum
2
Labial Vestibule
3
Buccal Frenum
4
Buccal Vestibule
5
Alveolar Ridge
6
Buccal Shelf
7
Retromolar Pad
8
Pterygomandibular Raphe
9
Retromylohyoid Space
10
Alveo-lingual sulcus
11
Sublingual Caruncles
12
Lingual Frenum
13
Premylohyoid Region
19
What muscle attaches at the labial flange space?
19
What is the labial vestibule of the mandible limited inferiorly by? Internally by? Labially by?
20
What are two roles of the mentalis muscle?
20
What does the mentalis muscle dictate?
21
Is the alveolar ridge a primary or secondary support area?
22
What is the buccal shelf bordered by internally and externally by?
22
Is the buccal shelf a primary stress bearing area?
22
What are two reasons why the buccal shelf is a primary support area?
23
What determines the amount of access to the buccal shelf?
24
The size and position of the buccal shelf varies relative to the degree of _______.
25
The external oblique line is a ridge of ______ from the ________, coursing superiorly and distally to become continuous with the _______.
25
What is the external oblique line the attachment site for?
25
The external oblique line is an anatomic guide for the lateral termination of the ________ of the mandibular denture.
26
What nerve exits through the mental foramen?
26
What has to happen in the area of the mental foramen in more severe cases where the foramen is in a more superior position?
27
What is one constant, relatively unchanging structure on the mandibular denture bearing surface?
27
What are 6 things that the retromolar pad contains?
27
Does the bone beneath the retromolar pad resorb secondary to the pressure associated with denture use?
27
Is the retromolar pad a primary support area?
28
What is the masseter groove?
29
What is the function of the suprahyoid muscles?
29
What are the four suprahyoid muscles?
29
What does the mylohyoid muscle form?
29
What does the mylohyoid muscle determine?
30
The position of the mylohyoid ridge varies relative to the degree of _______.
32
Where are the geniotubercles (mental spines) found?
32
What do the geniotubercles (mental spines) serve as the attachment sites for (2)?
33
The lingual frenum overlies which muscle?
33
What muscle does the genioglossus muscle originate from?
33
What forms the sublingual folds?
34
Where the retromylohyoid space found?
34
What is the retromylohyoid space bounded medially by?
34
What is the retromylohyoid space bounded posteriorly by?
34
What forms the retromylohyoid curtain posteriorly, laterally, and anteriorly, and inferiorly
34
The retromylohoid space is very important for ____ and _____
37
What do the intrinsic tongue muscles originate and insert with?
37
What do the intrinsic muscles of the tongue produce changes in?
37
Where do the extrinsic muscles of the tongue originate?
37
What do the extrinsic muscles of the tongue do?
37
What are the four extrinsic muscles of the tongue?
37
What percent of tongues are abnormal in either size, position, or shape?
38
Muscles of facial expression generally do not insert in what?
38
Muscles of facial expression need support from the _____ for proper function.
38
What are the 5 muscles of facial expression?
38
Where is the modiolus located?
38
Modiolus is an area where extrinsic perioral muscles deucussate to join ______.
38
What can the Modiolus influence for the maxillary denture?
38
What does the buccinator provide?
38
Bucinator muscle fibers contract in a line _____ to the plane of occlusion.
38
As a person ages, tension is lost in the buccinator and predisposes them to ______.
39
What is the role of the mentalis mucsle?
39
What does the mentalis muscle dictate for the lower denture?
39
What muscle are the action of the incisivus labii superioris and inferiorus similar to on the vestibular fornix?
39
Orbicularis oris is the ______ of the mouth.
39
Does orbicularis oris have any skeletal attachments?
39
Orbicularis oris is a composite muscle. It is composed of _____ fibers and ____ fibers of many muscles that converge at the _____.
41
What are the 5 muscles of the soft palate?
41
Describe class 1 soft palate classification.
41
Describe class 2 soft palate classification.
41
Describe class 3 soft palate classification.
42
What is the relationship between the functional movement of the soft palate and the House Classification?
