Removable Midterm

Front 1

The primary stress-bearing area of the maxillary arch is:
a. the rugae
b. the residual alveolar ridge
c. the maxillary tuberosities
d. the posterior palatal seal

Back 1

b. the residual alveolar ridge

Front 2

The labial frenum:
a. is a fold of mucous membrane
b. contains muscle fibers from the orbicularis oris
c. is an area requiring relief in the maxillary denture
d. a and c
e. all of the above

Back 2

d. a and c

Front 3

The muscles that affect the buccal frenum are:
a. the levator anguli oris (caninus)
b. the buccinator
c. the orbicularis oris
d. a and c
e. all of the above

Back 3

e. all of the above

Front 4

As the flange of the maxillary denture extends posteriorly from the labial vestibule to the buccal vestibule, it tends to "dip down" and then rise up again. This depression of the flange of the maxillary denture is due to:
a. the prominence of the malar process of the zygoma
b. the buccal frenum
c. the infraorbital rim

Back 4

a. the prominence of the malar process of the zygoma

Front 5

The reason that the lingual flange of the mandibular complete denture is longer posteriorly than anteriorly is because:
a. the attachment of the mylohyoid muscle is lower posteriorly
b. the fibers of the mylohyoid muscle run vertically posteriorly rather than horizontally
c. the fibers of the mylohyoid muscle run horizontally posteriorly

Back 5

b. the fibers of the mylohyoid muscle run vertically posteriorly rather than horizontally

Front 6

Loss of the complete dentition results in:
a. lack of fullness to the vermilion border of the lips
b. deepening of the nasolabial and mental sulci
c. decrease in th ecolumella-philtrum angle
d. a and b
e. all of the above

Back 6

d. a and b

Front 7

The incisal guidance:
a. is determined by the aesthetic arrangement of the maxillary and mandibular teeth
b. is deteremed by the arrangement of the maxillary and mandibular anterior teeth for proper phonetics
c. can be altered to a certain extent to provide a properly balanced occlusion
d. a and c
e. all of the above

Back 7

e. all of the above

Front 8

The incisal edges of the maxillary central incisors are usually found:
a. 3-4 mm anterior to the front of the incisive papilla
b. 8-10 mm anterior to the center of the incisive papilla
c. 8-10 mm anterior to the front of the incisive papilla
d. centered over the incisive papilla

Back 8

b. 8-10 mm anterior to the center of the incisive papilla

Front 9

The incisive papilla can be used as an anatomic landmark for:
1. the midline
2. the posterior palatal seal
3. the positioning of the maxillary central incisors
4. the positioning of the maxillary cuspids
5. the positioning of the mandibular cuspids

a. 1, 2, 3, 4
b. 1, 3, 4, 5
c. 1, 3, 4
d. 2, 3, 4
e. all of the above

Back 9

c. 1, 3, 4

Front 10

Which factors control the development of complete denture occlusion?

1. condylar guidance
2. occlusal plane
3. compensating curve
4. incisal guidance
5. cuspal inclination

a. 1, 3, 4, 5
b. 2, 3, 4
c. 1, 3, 4
d. 1, 2, 3, 5
e. all of the above

Back 10

e. all of the above

Front 11

Which of the above factors is determined by the patient and cannot be altered by the dentist?
a. incisal guidance
b. condylar guidance
c. compensating curve
d. occlusal plane

Back 11

b. condylar guidance

Front 12

All of the following are true EXCEPT:
a. increasing film thickness will decrease retention
b. better denture base adaptation decreases film thickness
c. atmospheric pressure and surface tension contribute to retention
d. the meniscus of saliva is not affected by the peripheral border seal

Back 12

d. the meniscus of saliva is not affected by the peripheral border seal

Front 13

The occlusal plane should be level posteriorly with:
a. the superior border of the retromolar pad
b. the lower 1/3 of the retromolar pad
c. 2/3 the height of the retromolar pad

Back 13

c. 2/3 the height of the retromolar pad

Front 14

The mandibular posterior teeth should:
1. be positioned so that the central grooves of the teeth are over the crest of the residual ridges
2. end anterior to the upward incline of the residual ridge
3. be positioned so that the buccal cusps of the teeth are over the crest of the ridge
4. extend posteriorly onto the upward incline of the residual alveolar ridge
should extend onto the retromolar pad

a. 1, 4, 5
b. 3, 4, 5
c. 1, 2
d. 1, 4
e. 1, 2, 5

Back 14

c. 1, 2

Front 15

The primary stress-bearing area of the atrophic mandible is the:
a. buccal vestibule
b. crest of the residual alveolar ridge
c. buccal shelf
d. slopes of the residual ridge

Back 15

c. buccal shelf

Front 16

In an atrophic mandible, the secondary stress-bearing area is (are):
a. the crest of the residual alveolar ridge
b. the slopes of the residual alveolar ridge
c. the retromolar pad

Back 16

b. the slopes of the residual alveolar ridge

Front 17

The rugae:
1. are the secondary stress-bearing area of the maxilla
2. resist lateral movement of the denture
3. should be impressed under pressure
4. resist forward movement of the maxillary denture
5. contain fibrous CT
6. contain adipose tissue

a. 1, 4, 5
b. 1, 4, 5, 6
c. 1, 2, 5
d. 1, 2, 3, 5
e. 1, 2, 3, 5, 6

Back 17

b. 1, 4, 5, 6

Front 18

In making a preliminary impression, the impression tray:
a. should be large enough to cover the entire arch
b. should have at least 1/4" of space between the inside of the tray and the tissues
c. can be a dentulous tray modified w/ rope wax to simulate an edentulous tray
d. a and b
e. all of the above

Back 18

e. all of the above

Front 19

Retention is defined as:
a. resistance to vertical dislodgement towards the supporting tissues
b. resistance to vertical dislodgement away from the supporting tissues
c. resistance to horizontal dislodgement

Back 19

b. resistance to vertical dislodgement away from the supporting tissues

Front 20

Adhesion is:
1. the physical attraction of like molecules for each other
2. the physical attraction of unlike molecules for each other
3. depends on the viscosity of the saliva
4. is independant of the viscosity of the saliva

a. 1 only
b. 2 only
c. 1 and 3
d. 2 and 3
e. 2 and 4

Back 20

d. 2 and 3

Front 21

The buccal shelf:
1. is bounded medially by the buccal frenum
2. is bounded laterally by the buccal vestibule
3. is bounded distally by the retromolar pad
4. is bounded medially by the crest of the alveolar ridge
5. is bounded anteriorly by the labial frenum
6. is bounded laterally by the external oblique line
7. is bounded medially by the mylohyoid ridge
8. is bounded anteriorly by the buccal frenum

a. 1, 2, 3, 5
b. 2, 3, 4, 5
c. 3, 4, 6, 8
d. 3, 6, 7, 8

Back 21

c. 3, 4, 6, 8

Front 22

Occlusion rims are used:
1. to establish the occlusal plane
2. to establish the arch form
3. to establish proper support of the lips and cheeks
4. to establish the initial vertical and horizontal overlaps
5. to obtain preliminary maxillomandibular relation records
6. to establish the vertical dimension of occlusion

a. 1, 3, 4, 5
b. 1, 2, 4, 5, 6
c. 1, 3, 5, 6
d. 1, 2, 3, 5, 6
e. all of the above

Back 22

e. all of the above

Front 23

The maxillary occlusion rim is adjusted so that:
1. anteriorly the rim lightly touches the lower (arch) during the production of "f" and "v" consonants
2. its anteroposterior plane is parallel to the lateral canthus-tragus line
3. anteriorly will usually extend inferiorly in a range level with the upper lip at rest to 2 mm below the upper lip at rest
4. it provides adequate support for the lips and cheeks
5. its anteroposterior plane is parallel to a line from the inferior border of the ala to the superior border of the tragus (Camper's line)

a. 1, 3, 4, 5
b. 1, 2, 3, 5
c. 1, 2, 4, 5
d. 1, 2, 3, 4, 5

Back 23

a. 1, 3, 4, 5

Front 24

Muscles that are involved with the opening and protrusion of the mandible include:
1. mylohyoid
2. geniohyoid
3. digastric
4. platysma
5. lateral pterygoids
6. medisal pterigoids
7. masseter
8. omohyoid
9. sternohyoid
10. stylohyoid
11. temporalis

a. 1, 2, 3, 4, 5
b. 1, 2, 3, 4, 6, 8, 9, 10
c. 1, 2, 3, 4, 5, 8, 9, 10

Back 24

c. 1, 2, 3, 4, 5, 8, 9, 10

Front 25

The average interocclusal distance is:
A. 1-2 mm
B. 2-4 mm
C. 3-5 mm
D. 1-3 mm

Back 25

B. 2-4 mm

Front 26

Centric relation is defined as:
A. the most posterior relation of the mandible to the maxilla at the established vertical dimension of occlusion w/ the condyles articulating in the anterior-superior position against the slopes of the articular eminences.
B. the most posterior relation of the maxilla to the mandible at the established vertical dimension of occlusion w/ the condyles articulating in the anterior- superior position against the slopes of the articular eminences.
C. the most retruded relation if the mandible to the maxilla at the established vertical dimension of occlusion w/ the condyles articulating in the anterior- superior position against the slopes of the articular eminences.

Back 26

A. the most posterior relation of the mandible to the maxilla at the established vertical dimension of occlusion w/ the condyles articulating in the anterior-superior position against the slopes of the articular eminences.

Front 27

27. Methods used to retrude the mandible include:
1. instructing the patient to relax their mandible and allow it to move backwards and close
2. asking the patient to place the tip of their tongue to the back of the palate and close
3. tilt the patient back slightly in the chair
4. turn the patient upside down and shake

Back 27

1. instructing the patient to relax their mandible and allow it to move backwards and close
2. asking the patient to place the tip of their tongue to the back of the palate and close
3. tilt the patient back slightly in the chair

Front 28

Mounting the max. cast on the articulator w/o a face-bow transfer:
A. presents no problem in development of the occlusion
B. may place the relationship of the teeth in a position on the articulator that is different from their relationship in the mouth
C. can cause discrepancies in eccentric movements of the denture teeth that could lead to an unbalanced occlusion especially w/ anatomic denture teeth
D. B and C

Back 28

D. B and C

Front 29

Differences b/w the arbitrary face-bow and the kinematic face-bow:
1. the fork for the arbitrary fb attaches to the mand. occlusion rim
2. the fork for the kinematic fb attaches to the mand. occlusion rim
3. the fork for the kinematic fb attaches to the max. occlusion rim
4. the fork for the arbitrary fb attaches to the max. occlusion rim
5. you can locate the exact, true center of the terminal hinge axis of the mandible w/ the arbritrary fb
6. you can locate the exact, true center of the terminal hinge axis of the mandible w/ the kinematic fb
7. there are no differences b/w the 2 facebows

Back 29

2. the fork for the kinematic fb attaches to the mand. occlusion rim
4. the fork for the arbitrary fb attaches to the max. occlusion rim
6. you can locate the exact, true center of the terminal hinge axis of the mandible w/ the kinematic fb

Front 30

The facia arbritrary fb is positioned:
A. 13 mm in front of the tragus on the ala-tragus line
B. 13 mm in front of the tragus on the outer canthus-tragus line
C. 5 mm in front of the tragus on the ala-tragus line
D. 13 mm in front of the external auditory meatus on the outer canthus- tragus line

Back 30

D. 13 mm in front of the external auditory meatus on the outer canthus- tragus line

Front 31

The centric relation record can be made w/ which of the following mediums?
1. beeswax
2. baseplate wax
3. zinc-oxide eugenol paste
4. aluwax
5. impression plaster
6. high viscosity impression materials
7. low viscosity impressin materials

Back 31

1. beeswax
3. zinc-oxide eugenol paste
4. aluwax
5. impression plaster
7. low viscosity impressin materials

Front 32

The cuspid lines may be determined by lines:
A. drawn from the pupils in a vertical plane passing through the commisures of the lips
B. extending lines from the inner canthus of the eyes through the commisures of the lips
C. drawn just anterior to the buccal frena bilaterally
D. A and C
E. all of the above

Back 32

E. all of the above

Front 33

. When drawn, the cuspid line:
A. delineates the location of the mesial surface of the maxillary cuspid
B. delineates the location of the distal surface of the maxillary cuspid
C. delinieates the location of the cusp tip of the maxillary cuspid
D. is of no consequence to the location of the max. cuspid

Back 33

B. delineates the location of the distal surface of the maxillary cuspid

Front 34

When a patient is requested to make the "m" sound, lick their lips, swallow, and/or close their lips lightly together, the clinician is attempting to determine the patients's:
A. vertical dimension of occlusion
B. vertical dimension of rest
C. centric relation record
D. none of the above

Back 34

B. vertical dimension of rest

Front 35

A vertical dimension of occlusion that is excessive;
1. will cause elimination of the interoocclusal distance
2. will cause an increased interocclusal distance
3. will cause spasms of the muscles of the jaws
4. will cause a generalized soreness to the residual alveolar ridges

Back 35

1. will cause elimination of the interoocclusal distance
3. will cause spasms of the muscles of the jaws
4. will cause a generalized soreness to the residual alveolar ridges

Front 36

A vertical dimension of occlusion that is overclosed (insufficient):
1. will cause elimination of the interocclusal distance
2. will cause an increased interocclusal distance
3. reduces biting force
4. increases biting force
5. causes the chin to look closer to the nose
6. causes the mandible to protrude in relation to the maxilla
7. causes the mandible to retrude in relation to the maxilla
8. causes the corners of the mouth to turn down

Back 36

2. will cause an increased interocclusal distance
3. reduces biting force
5. causes the chin to look closer to the nose
6. causes the mandible to protrude in relation to the maxilla
8. causes the corners of the mouth to turn down

Front 37

If there exists a steep condylar guidance and a steep incisal guidance, the preferred choice of occlusal design is:
A. use of anatomic teeth w/ a compensating curve
B. use of semi-anatomic teeth w/ a compensating curve
C. use of monoplane teeth w/ ramping of the second molars

Back 37

A. use of anatomic teeth w/ a compensating curve

Front 38

If there exists a Class II of Class III jaw relationship, severely atrophic residual ridges and/or poor neuromuscular coordination of the patient, the preferred choice of occlusal design is:
A. use of anatomic teeth w/ a compensating curve
B. use of semi-anatomic teeth w/ a compensating curve
C. use of monoplane teeth w/ ramping of the second molars

Back 38

C. use of monoplane teeth w/ ramping of the second molars

Front 39

If there exists a steep condylar guidance w/ a shallow incisal guidance, the choice(s) of occlusal design is/are:
A. use of anatomic teeth w/ a compensating curve
B. use of semi-anatomic teeth w/ a compensating curve
C. use of monoplane teeth w/ ramping of the second molars
D. A and B
E. all of the above

Back 39

D. A and B

Front 40

The basic facial shapes of anterior teeth are:
1. square
2. square tapering
3. tapering
4. tapering ovoid
5. ovoid
6. square ovoid
7. square tapering ovoid

Back 40

1. square
2. square tapering
3. tapering
5. ovoid

Front 41

Anatomic teeth:
1. are very aesthetic
2. are easier to balance than non-anatomic teeth
3. provide a more vertical chewing stroke
4. provide a more horizontal chewing stroke

Back 41

1. are very aesthetic
2. are easier to balance than non-anatomic teeth
3. provide a more vertical chewing stroke

Front 42

. The vibrating line:
A. marks the posterior border of the posterior palatal seal
B. is totally on the soft palate
C. extends form hamular notch to hamular notch passing anywhere from 2 mm in front to 2mm behind the fovae palatinae
D. A and C
E. all of the above

Back 42

E. all of the above

Front 43

. The deflection of the lingual flange medially away from the alveolar ridge in the molar region and downward beneath the tongue:
1. is caused by the prominence of the mylohyoid ridge in the molar region
2. is caused by the contraction of the mylohyoid muscle
3. is not desirable and is eliminated in the denture
4. is desirable b/c it allows the tongue to sit upon this portion of the lingual flange to aid in retention of the mand. denture
5. is desirable b/c it allows the mylohyoid muscle to contract during function w/o displacing the mand. denture

Back 43

1. is caused by the prominence of the mylohyoid ridge in the molar region
2. is caused by the contraction of the mylohyoid muscle
4. is desirable b/c it allows the tongue to sit upon this portion of the lingual flange to aid in retention of the mand. denture
5. is desirable b/c it allows the mylohyoid muscle to contract during function w/o displacing the mand. denture

Front 44

. The amount of space that exists b/w the vertical dimension of rest and the vertical dimension of occlusion is:
A. the closest speaking space
B. the interocclusal distance (free-way space)
C. the centric relation position

Back 44

B. the interocclusal distance (free-way space)

Front 45

The positional relationship of the mand. incisors to the max. incisors during the "s", "ch", and "j" sounds is:
A. the closest speaking space
B. the interocclusal distance
C. the vertical dimension of rest

Back 45

A. the closest speaking space

Front 46

. Instablility of the max. denture can be associated w/:
1. overextension of the labial, buccal, and posterior borders
2. underextension of all borders
3. flabby tissues displaced during impressions
4. loss of the posterior palatal seal
5. anterior teeth placed too far labially
6. premature occlusal contacts
7. centric relation and centric occlusion are in harmony
8. denture base is not relieved over the median palatal region

Back 46

1. overextension of the labial, buccal, and posterior borders
2. underextension of all borders
3. flabby tissues displaced during impressions
4. loss of the posterior palatal seal
5. anterior teeth placed too far labially
6. premature occlusal contacts
8. denture base is not relieved over the median palatal region

Front 47

The vibrating line:
1. marks the posterior border of the denture
2. generally runs 2mm anterior to the fovea
3. can vary in position among patients and is best found by marking the soft palate w/ an indelible marking stick when the pt. is instructed to say "ah"
4. is directly located at the junction of the hard and soft palate

Back 47

1. marks the posterior border of the denture
2. generally runs 2mm anterior to the fovea
3. can vary in position among patients and is best found by marking the soft palate w/ an indelible marking stick when the pt. is instructed to say "ah"

Front 48

Obliteration of the philtrum indicates:
1. the max. anterior teeth are set too far to the palatal side
2. the max. anterior teeth are set too far labially
3. the labial flange is too thin
4. the labial flange is too thick
5. the mand. teeth are set too far lingually
6. the mand. teeth are set too far labially
7. no problems

Back 48

2. the max. anterior teeth are set too far labially
4. the labial flange is too thick

Front 49

. Polishing of the denture involves the following sequence:
1. dry pumice w/ a dry rag wheel
2. wet pumice w/ a dry rag wheel
3. wet pumice w/ a wet rag wheel
4. Tripoli w/ a wet rag wheel
5. Tripoli w/ a dry rag wheel
6. high shine w/ a dry rag wheel
7. high shine w/ a wet rag wheel

Back 49

3. wet pumice w/ a wet rag wheel
5. Tripoli w/ a dry rag wheel
6. high shine w/ a dry rag wheel

Front 50

. The processing time and temperature for heat curing of acrylic resin is:
A. 5 hrs. at 140°
B. 9 hrs. at 150°
C. 9 hrs. at 165°
D. 6 hrs. at 165°

Back 50

C. 9 hrs. at 165°