Midterm

Question 1

What are the maxillary primary stress areas?

Answer 1

Alveolar ridge and tuberosities

Question 2

What are the mandibular primary stress areas?

Answer 2

Buccal shelves

Question 3

The _____________ is a secondary stress bearing area on the mandible.

Answer 3

Alveolar ridge

Question 4

The _______ is a secondary stress bearing area on the maxilla only.

Answer 4

Lateral hard palate

Question 5

The mucosa covering the hard palate and residual ridge on an edentulous patient is classified as _____________ mucosa because it is (keratinized or unkeratinized).

Answer 5

Masticatory; keratinized

Question 6

What areas on may require relief to ensure there is no pressure on them in the final denture?

Answer 6

1. Secondary stress bearing areas
2. Palatal torus
3. Median palatal raphe
4. Mandibular tori
5. Retromylohyoid ridge
6. Undercuts or sharp bony prominences

Question 7

What should be the anatomical posterior extent of the maxillary denture?

Answer 7

Vibrating line

Question 8

T/F: The vibrating line is a straight line from one hamular notch to the other.

Answer 8

FALSE

Does go through the hamular notches but it is a CURVED line towards the anterior

Question 9

Using phonetic sounds such as “f” and “v” can help determine what part of the maxillary occlusal rim?

Answer 9

Anterior contour and length

Question 10

The anterior-posterior maxillary occlusal plane is often parallel with which line?

Answer 10

Ala-tragus line (Camper’s line)

Question 11

The lateral maxillary occlusal plane is normally parallel with which line?

Answer 11

Inter-pupillary line

Question 12

If the floor of the mouth is near the level of the ridge crest, ________ and ________ of the denture is severely compromised.

Answer 12

Retention and stability

Question 13

A cross section of the residual ridge form in the shape of a ___ is most favorable for retention and stability.

Answer 13

U

Question 14

T/F: A V-shaped ridge is unfavorable, but a flat/feather edged is the worst.

Answer 14

True

Question 15

The biggest thing leading to instability of dentures is ________ tissue.

Answer 15

Movable

Question 16

Which part of the maxilla can be displaced too far occlusally and disrupt interocclusal space, esp in a patient who has been edentulous for a long time.

Answer 16

Maxillary tuberosities

Question 17

A class __ soft palate is favorable, while a class __ soft palate declines quickly into the throat leaving less room for the posterior of the denture.

Answer 17

I; III

Question 18

Along with the vibrating line, what other two features denote the maximum posterior extent of the maxillary denture?

Answer 18

Hamular notches

Question 19

T/F: The buccal shelf resorbs with the alveolar ridges.

Answer 19

FALSE

Buccal shelf does not resorb

Question 20

The __________ creates the peripheral seal of the mandibular denture.

Answer 20

Retromolar pad

Question 21

_______ and ________ are affected by the shape of the residual ridge.

Answer 21

Support and Retention

Question 22

The patient should be instructed to leave dentures out for how long prior to the final impression appt?

Answer 22

24 hours

Question 23

Describe the four actions of border molding for a maxillary impression.

Answer 23

1. Pucker lips around finger and tray handle
2. Produce a maximal smile line
3. Open wide and move mandible laterally (pterygomandibular raphe and coronoid process)
4. Plug nose and hold tongue down - ask patient to blow through nose (find vibrating line)

Question 24

Describe the 5 key actions to create a mandibular border molding.

Answer 24

1. Suction around finger and tray handle
2. Produce maximal smile line
3. Pronounce “christmas”, “Q”, and “U”. Pull lower lip over the tray
4. Close against resistance in intervals
5. Move tongue and swallow

Question 25

What two muscles lead to the postero-lateral borders of the mandibular impression tray?

Answer 25

Buccinator and masseter

Question 26

What muscle leads to the medial/lingual border of the mandibular impression?

Answer 26

Mylohyoid

Question 27

How much material is loaded into the tray for the final impression?

Answer 27

2-3 mm

Question 28

T/F: Minimal pressure should be used in taking final impressions.

Answer 28

TRUE

Question 29

T/F: Women typically show more teeth with the resting lip than men.

Answer 29

TRUE

Question 30

What material are the denture teeth made from?

Answer 30

Polymethylmethacrylate

Question 31

T/F: Anterior teeth should be placed directly over the ridge.

Answer 31

FALSE

Question 32

On average, the distance from the center of the incisive papillae to the labial surface of the central incisor is ____ mm.

Answer 32

8-10 mm

Question 33

How can the incisive papilla show where the canine tips should be?

Answer 33

Transverse Line passing through the posterior portion of the papilla will define where the cusp tips should be

Question 34

During what sounds should the central incisors contact the wet-dry line?

Answer 34

F and V

Question 35

T/F: The maxillary lingual cusps should be centered over the posterior residual ridge.

Answer 35

True

Question 36

T/F: The mandibular anterior teeth should not be placed beyond the center of the vestibule.

Answer 36

TRUE

Question 37

T/F: Anatomic and semi-anatomic teeth are NOT indicated if they will oppose natural teeth.

Answer 37

FALSE

Question 38

When would non-anatomic teeth be indicated?

Answer 38

When stability and retention are of great concern. Less inclined cusps will reduce risk of lateral displacement.

Question 39

Describe lingualized occlusion.

Answer 39

Anatomic upper teeth set so that only the lingual cusp will contact non-anatomic lower teeth

Question 40

What are the functions of the record bases and occlusion wax rims?

Answer 40

1. Establish facial contours 2. Aid in orientation of occlusal plane 3. Establish VDO

Question 41

How thick should the occlusal rim be?

Answer 41

Molar region: 8-10mm Permolar region: 5-7mm Anterior: 3-5mm

Question 42

The maxillary occlusal rim should be ___ mm tall from the front and ____ mm tall from the posterior.

Answer 42

22mm; 8mm

Question 43

The mandibular occlusion rim should be ___ mm high in the front and should extend posteriorly to ___ the height of the retromolar pad.

Answer 43

18 mm; 2/3

Question 44

What is the ideal nasiolabial angle?

Answer 44

95 degrees

Question 45

T/F: There should be a 1-2 mm horizontal overlap between maxillary and mandibular wax rims.

Answer 45

True

Question 46

T/F: There must be a 2-4 mm space between the rims to account for the interocclusal distance.

Answer 46

True

Question 47

T/F: The anterior maxillary teeth are all set with a slight distal inclination.

Answer 47

True

Question 48

When setting mandibular teeth we want a ____ mm vertical overlap, a ____ mm horizontal overlap, and (contact or no contact) between the maxillary and mandibular teeth.

Answer 48

1-2 mm; 1-2 mm; No contact