M.C.

Q:
7- All the following selection parameters are true for posterior teeth selection except
a- Buccolingual width is the same as natural te eth
b- Anteroposterior dimension is determined posteriorly just before ascending area of mandible
c-The form of posterior teeth is selected according to ridge integrity and jaw rel ationship
d- Non of the above.

Choose the best answer (circle only one):

1. Rotational movement of the mandible:
a. Condylar head and the disc move as one unit.
b. It occurs during the first few millimeters opening of the mouth.
c. Both (a) and (b).
d. Neither (a) nor (b).
2. Compensating curve:
a. It is an equilateral triangle between the condyles and contact point
of the lower central incisors.
b. Each side is 4 inches (10 cm).
c. It helps in mounting maxillary cast
d. None of the above.
3. Maxillary face bow:
a. It is used to locate the true terminal hinge axis.
b. It is used for mounting the maxillary cast.
c. Both (a) and (b).
d. Neither (a) nor (b).
4. Mandibular rest position:
a. It is the position of the mandible to the cranium in the active state.
b. It is used clinically as reference position for determining vertical
dimension of occlusion which is 3mm greater than that of rest.
c. Both (a) and (b).
d. Neither (a) nor (b).

 Choose the correct answer:

retention & stability

 Choose the correct answer:

1. Adhesion depends on:
a) Area covered by the denture.
b) Close adaptation of the denture to the tissues.
c) Fluidity of the saliva.
d) All of the above.
2. Rubber suction disk is fixed to which surface of the denture:
a) Polished surface.
b) Fitting surface.
c) Occlusal surface.
d) All of the above.
3. Denture adhesives are used in which of the following conditions:
a) To increase the retention in case of severe ridge resorption.
b) During jaw relation record.
c) To increase the retention of all dentures.
d) A & b.
e) B & c.
4. Posterior teeth of the denture should:
a) Have a wide base & a narrow apex.
b) Be set up over the crest of the ridge.
c) Be set up so that the occlusal plane is nearer to the weaker ridge.
d) All of the above.
5. The occlusal plane should be:
a) Below the maximum convexity of the tongue.
b) Nearer to the lower ridge.
c) Nearer to the weaker ridge.
d) All of the above.

relief & posterior palatal seal

 Choose the correct answer:
1. From the methods of relief:
a) Scrapping the final impression.
b) Scrapping the master cast.
c) Building onto the cast.
d) Using selective pressure impression technique.
e) A, c, d.
f) A, b, d.
2. From the hard areas requiring relief:
a) Median palatine raphe.
b) Incisive papilla.
c) Prominent genial tubercles.
d) All of the above.
e) A & b.
f) A & c.
3. Relief of insufficient depth at the median palatine raphe can result in:
a) Unstable denture.
b) Inflammation at the midline of the palate.
c) Midline fracture of the maxillary denture.
d) All of the above.
e) A & b.
4. Automatic relief is obtained by:
a) Mucostatic impression tech.
b) Mucocompressive imoression tech.
c) Selective pressure impression tech.
d) None of the above.
5. The following materials can be used for blocking undercuts in
complete
dentures except:
a) Tin foil.
b) Plaster.
c) Wax.
d) None of the above.
6. Relief is important to:
A) Prolong duration of denture service.
B) Increasing denture stability.
C) Giving comfort to the patient.
D) Compensate for technical discrepancies.
E) All of the above.
F) A & b only.
7. Posterior palatal seal area is:
a) The area in the fitting surface of the denture that is reduced to
eliminate pressure.
b) Area that must be relived to improve denture retention.
c) Soft tissue area at or beyond the junction of the hard & soft palate
which can be pressed within the physiologic limit to aid in retention.
d) None of the above.

4) From the mandibular supporting structure for complete denture

construction :
a) Buccal vestibule
b) Masseter groove
c) Labial frenum
d) Buccal shelf of bone

6) The technique of jaw relationship depend on :

a) Impression material
b) Type of occlusion rim
c) Arrangement of teeth
d) Boxing method

11) Retromolar pad is used as a guide for :

a) Position of maxillary incisors
b) Position of mandibular canine
c) Height of posterior occlusal plane in mandible
d) Height of posterior occlusal plane in maxilla

15) A procedure to resurface the fitting surface of an existing denture with

new denture base material is called :
a) Boxing
b) Repair
c) Rebasing
d) Relining

16) Warpage of shellac and wax baseplate can be overcomed by making :

a) Compound occlusion rim
b) Stabilized acrylic base
c) New impression
d) Boxing of impression

18) Non anatomical teeth are indicated in atrophied ridge because there is :
a) No occlusal groove
b) Minimal vertical force
c) Minimal lateral force
d) Unesthetic

19) Combination of porcelain and opposing acrylic teeth should never be used
because difference in :
a) Color
b) Thermal expansion
c) Wear resistance
d) Tooth anatomy

20) Simulating the orange peel surface of attached gingiva in the denture
called :
a) Overcontouring
b) Stippling
c) Papillae carving
d) Eminence building

21) Median palatine raphe act as a fulcrum under the maxillary denture by ;
a) Advanced ridge resorption
b) Excessive relief
c) Incomplete acrylic polymerization
d) A & C

22) Long curing cycle of acrylic resin involve :

a) Boiling at the last 30 min
b) Boiling at the first 30 min
c) No boiling at all
d) None of them

24) Minor occlusal discrepancies resulted from converting the wax denture
into acrylic resin is corrected by :
a) Polishing the denture
b) Clinical remount
c) Laboratory remount
d) Relining the denture

25) Countouring the flange and border can affect :

a) Stability of the denture
b) Facial esthetic
c) Retention of the denture
d) All of them

28) The arbitrary mounting of the maxillary cast on fixed value articulator is :
a) Split cast method
b) Kinematic method
c) Bonwill method
d) Injection method

29) The resistance of the denture base too rotational forces refer to :
a) Retention
b) Support
c) Stability
d) None of the above
30) The reason for using sticky wax in fixation of fractured part is :
a) Thin thickness
b) Yellow color
c) Time saving
d) Brittle property

31) Separation of opposing posterior teeth when anterior teeth are edge to
edge position result from :
a) Bennet movement
b) Hinge axis
c) Christensen phenomenon
d) Condyler rotation

32) Naso labial angle is a guide to :

a) Vertical dimension of face
b) Mandibular occlusal plane
c) Lip support
d) Width of anterior teeth

33) Midline fracture of maxillary denture may result from :

a) Heavy para functional force
b) Ridge undercut
c) insufficient relief for median palatine raphe.
d) A& C

38) An important factor in the retention of complex upper dentures is:

a) Atmospheric pressure
b) Surface tension
c) Viscosity of saliva
d) Gravitational pull
39) Flat horizontal palatal area with developed ridges would:
a) Aid in adhesion of upper denture
b) Give poor peripheral seal
c) Not resist lateral movement
d) Provide unfavourable force
40) Flat palate with shallow sulci would:
a) Aid in adhesion of upper denture
b) Resist anterior posterior movement
c) Give poor peripheral seal
d) Be able to give functional requirement
41) Well-developed but narrow or knife like ridges are unfavourable because:
a) The pressure of the dentine during clenching and mastication cause pain
b) Adhesion is negligible
c) Poor peripheral seal
d) All of the above

42) The tissue of hamular notch are compressible to the:

a) Post dam line should be in this region
b) Post dam should not be carried to this region
c) Gross alveolar resorption does occur if post dam is carried to this region
d) None of the above

45) Condition of hard tissue requiring surgical intervention before denture

fabrication includes all except:
a) Dental cysts
b) Buried roots
c) Flabby, Fibrous ridge
d) Prominent tuberosities

46) Torus mandibularis is usually found in:

a) Central incisor region
b) Cuspid region
c) Premolar region
d) Molar region

47) Usually allowed clearance between the tray and cast should be:
a) 1 mm
b) 2 mm
c) 2.5 mm
d) 3.5 mm
48) Because of its accuracy and reproducible peripheral form impression
plaster is good material for.
a) Retention
b) Support
c) Stability
d) All of the above

50) Relationship in which the teeth are separated and the head of the
condyles are returned in the glenoid fossae is:
a) Retruded position
b) Dynamic position
c) Rest position
d) Lateral movement

51) Mandibular condyles are drawn forward in fossa by:

a) Medial pterygoid
b) Lateral pterygoid
c) Temporalis
d) Cenioglossus

52) Usual movement of condyles follow contraction of lateral pterygoid is:

a) Upwards
b) Downwards
c) Upwards and forwards
d) Downwards and forwards

53) Artificial teeth are:

a) Wider than natural
b) Narrower than natural
c) Same as natural
d) None of the above
54) Incisal edge of which tooth is short of the occlusal plane:
a) Central incisor
b) Lateral incisor
c) Canine
d) First premolar

55) Posterior teeth with cusps should generally be used in preference to

cuspless for following reasons:
a) Greater efficiency
b) Balanced occlusion
c) Both of the above
d) None of the above

56) Which toot has all its cusp clear of occlusal plane:
a) First premolar
b) Second premolar
c) First molar
d) Second molar

57) Arrangement of the posterior teeth in anteroposterior curved manner

following an imaginary line touching the buccal cusp of lower teeth is known
as:
a) Curve of Monro
b) Curve of orientation
c) Curve of Spee
d) Curve of Mcmson

58) The bonding of porcelain teeth to the denture base is:

a) Chemical
b) Mechanical
c) Both of the above
d) None of the above

59) All of the following statements regarding acrylic teeth are correct except:
a) It has a poor abrasion resistance
b) Teeth can be stained in lab
c) Bonding to denture base is mechanical
d) Density of acrylic is about half that of porcelain

60) Artificial teeth which maintain the vertical occlusal dimension are:
a) Acrylic
b) Porcelain
c) Metal
d) Ivory

61) As a general rule the distance from the distal surface of the second molar
to the posterior edge of the denture should be:
a) 1 mm
b) 5 mm
c) 8 mm
d) 10 mm
62) Greatest instability of the lower denture is caused by:
a) Cheek
b) Buccinator
c) Tongue
d) Mentalis

63) Bennet angles on the condylar pillars are set by the formula:
a) H = (L/8) +12
b) H = (L/12) +8
c) L = (H/12) + 8
d) L = (H/8) + 12

64) The most common effect of reduced salivary flow is:

a) Liability to trauma
b) Reduction in retention
c) Both of the above
d) None of the above

65) Zero cusp teeth are usually used in:

a) Spiky lower ridge
b) flat lower ridge
c) High lower ridge
d) Undercut ridges
66) Incisal edge of upper CD should be:
a) 1-2 mm below lip
b) 2-3 mm below lip
c) 1-2 mm above lip
d) 4 mm below lip

67) Dentures constructed before the extraction of teeth which it replaces are:
a) Onlay dentures
b) Hybrid dentures
c) Complete dentures
d) Immediate dentures

68) Patients has class III relationship of mandible to maxilla. The upper
anterior teeth should:
a) Be set to mandibular
b) Be set end to end
c) Never be set lingual to mandibular teeth
d) Never be set labial to mandibular teeth

70) Vertical dimension of occlusion when added to interocciusal distance lead

to:
a) Centric relation
b) Centric occlusion
c) Vertical dimension of rest
d) Lateral relation

71) Most common cause of porosity in heat cured acrylic

is:
a) Slow heating
b) Lack of pressure
c) Packing in dough stage
d) Packing in high pressure
72) Consequences of excess monomer in acrylic resin mixture is:
a) Excessive shrinkage
b) Excessive expansion
c) Excessive porosity
d) Excessive strength

75) Atmospheric pressure is utilized in retention of:

a) Lower denture only
b) Upper denture only
c) Both of the above
d) None of the above
76) Negative duplication of the mouth tissue at rest is known as:
a) Mucostatic

b) Mucocompressive
c) Both of the above
d) None of the above

77) Failure to completely close the flask in packing and processing a denture
results in:
a) Marked porosity
b) Disturbed peripheries
c) Opening of the bite
d) Closing of the bite
78) The intimate contact of the denture periphery with the soft border tissues
is referred to as the:
a) Articulation
b) Boxing area
c) Peripheral contact
d) Peripheral seal
79) The main purpose of boxing the impression is to:
a) Preserve the border width
b) To give shape to base
c) To condense material
d) To avoid distortion of impression
80) One of the most important factor in maintaining stability of artificial
dentures is proper
a) Articulation

b) Occlusion harmony
c) Teeth selection
d) Adaptation of denture base to tissue

81) When the mandible is in centric relation the condyles are in their.
a) Anterior, lower most position
b) Posterior, lower most position
c) Rearmost, upper most position
d) None of the above

82) The concept of balanced occlusion is applied primarily to:

a) Natural dentition
b) Complete dentures
c) Fixed partial dentures
d) All of the above

83) Occlusion can be adjusted by all parameters except:

a) Cusp height
b) Postural position
c) Incisal guidance
d) Compensating curve
84) Porcelain denture teeth:
a) Have a higher abrasion resistance than gold
b) Used with small interalveolar clearance
c) Have lower abrasion resistance than enamel
d) Higher coefficient of thermal expansion than acrylic

85) All of the following help in determining the articulation of the teeth
except:
a) Incisal guidance
b) Condylar guidance
c) Freeway space
d) Orientation of occlusal plane

6- A 51-years-old male patient present for the final impression

appointment for the fabrication of a complete upper denture . As you
remove the final impression from the patient’s mouth is the custom
tray , which of the following structures are you attempting to
accurately capture ?
I- Residual ridge
II- Labial and buccal frenum
III- Labial and buccal vestibules

IV- Tuberosities
V- Lingual pouch
VI- Posterior palatal seal
VII- Retromolare pad

a- I , II ,III , IV and V
b- II, IV , VI , and VIII
c- I,II,III,IV ,and VI
d- All of the above

11- Anteroposterior inclination of occlusal plane should be parallel

to ?
a- Frankfort’s plane
b- Camper’s line (ala-tregus line )
c- Inter-pupillary line
d- Horizontal condylar inclination

12- Anterior inclination of occlusal plane should be parallel to

a- Frankfort’s plane
b- Camper’s line (ala-tregus line )
d- Inter-pupillary line
e- Horizontal condylar inclination

15- The amount of verminllion border shown on the lips depends on

a- The bulk of the orbicularis oris muscle
b- The bulk of the temporalis muscle
c- The bulk of the masseter muscle
d- Non of the above

19- Structures limiting mandibular denture include all of the following

except
a- Lingual pouch
b- Lingual frenum
c- Retro molar bad
d- Masseter muscle influencing area

24- Function of post dam

a- Prevent reflex irritation and gag sensation
b- Increase retention
c- To compensate acrylic dimenstion
d- All

25- The distal palatal termination of the maxillary complete denture

base is the

a- Tuberosity
b- Fovea palatatine
c- Maxillary tori
d- Vibrating line

26- Which is one of the purposes or characteristics of the postpalatal

seal ?
a- Provide a leak to air being forced under the denture
b- Usually should extend posterior to the fovea palatinae
c- Improves the support of the maxillary denture
d- None of the above

27- A temporary form representing the base of a denture which is

used for making maxilla-mandibular (jaw) relative record for
arranging teeth or for trail insertion in the mouth is :
a- Record block
b- Custom tray
c- Spacer
d- None of the above

28- The anterior width of the maxillary occlustion rim is :

a- 5-6 mm
b- 10-12 mm
c- 15-18 mm
d- 20-22 mm
29- Patient moves his mandible in a right lateral excursion . To which
direction will the nonwarking condyle moves ?
a- Down , forward , and medially
b- Down, forward and laterally
c- Up, back , and out
d- Up , back , down

30- When mandible is protruded , disocclusion of posterior teeth is

resulted . This phenomenon is called as
a- Monsoon movement
b- Christensen’s phenomenon
c- Spee movement
d- Hanau’s phenomenon

31- Which of the following is not true about centric relation and
centric occlusion
a- Centric relation is a bone to bone relationship
b- Centric occlustion is the relationship of upper and lowe teeth to
each other
c- Centric relation is a recordable and reproducible position
d- In natural dentition the centric occlustion is usually posterior to
centric relation

32- Sensitive areas to be relieved include all of the following except

a- Incisive papilla
b- Rugae area
c- Median palatine raphe
d- Thin wary ridge

1-How will the alveolar ridge respond to mandibular complete denture base that terminates short of
retromolar pad:
A. Marked ridge resorption will occur.
B. The alveolar ridge will not be affected at all.
C. Fracture of the ridge may occur.
D. Soreness of the soft tissue.
E. The apposition of bone on the ridge will occur.

2- The position of the upper Occlusal rim in the articulator is adjusted by:
A. By using a facebow.
B. Arbitrary means.
C. By adjusting the incisal pin.
D. Visually.

3- Mandibular movement pattern of complete denture patients and those with natural teeth are:
A. Mandibular movement complete denture patients are completely different.
B. Mandibular movements are irregular in complete denture patients.
C. Mandibular movement is slow in complete denture patients.
D. Same.
E. Mandibular movement is frequent in complete denture patient.
6-While recording the rest position of the mandible, the patient's:
A. The neck should be extended.
B. Head should be upright and unsupported.
C. Patient should be lying in repose position.
D. Head should be supported by the head rest.

8- A loss in vertical dimension in complete denture will cause the mandible to move:
A. Loss of vertical dimension is very rare.
B. Forward in relation to upper jaw.
C. No change in the position of the jaws.
D. In eccentric movement.
E. Backward in relation to upper jaw.

10- The oral muscular forces have a definitive effect on the position of the mandible. What position will the
mandible be braced during typical empty mouth swallowing:
A. Eccentric relation.
B. The intercuspal position.
C. Centric relation.
D. The retruded contact position.
(REMAKE)
3-The most common site of mandibular torus is:
A. Labial side of anterior mandible.
B. Buccal side of posterior mandible.
C. Palatal side of posterior maxilla.
D. Lingual side opposite to mandibular premolars.
E. Buccal side of posterior maxilla.

4-The acquired muscle control is:

A. The physical attraction of unlike molecules for each other.
B. Required so that the muscles of the cheek and tongue will seat rather unseat the dentures.
C. The resistance to denture displacement by atmospheric pressure.
D. Of no value in complete denture retention.
E. The resistance to separation possessed by the film of liquid between two well-adapted surfaces.

5-The lateral condylar path angle is:

A. The Gothic arch angle.
B. The angle between the condylar path during protrusion and the horizontal plane.
C. The angle between the path taken by the incisal edges of the lower incisors on the palatal surface of the
upper incisors until the teeth touch edge to edge and the horizontal..
D. The angle between the path along which the balancing condyle head moves medially during lateral
movement and the sagittal plane.
E. The angle between Bennett movement and the horizontal plane,
6-Which of the following palatal vault and arch form are the most favorable for complete denture retention
A. V-shaped and tapering arch form.
B. Flat palate and tapering arch form.
C. U- shaped palate and square arch form.
D. V- shaped palate and ovoid arch form.
E. Flat palate and ovoid arch form .

7-The horizontal condylar path angle is:

A. The angle between Bennett movement and the horizontal plane,
B. The angle between the condylar path during protrusion and the horizontal plane.
C. The angle between the path along which the balancing condyle head moves medially during lateral
movement and the sagittal plane.
D. The Gothic arch angle.
E. The angle between the path taken by the incisal edges of the lower incisors on the palatal surface of the
upper incisors until the teeth touch edge to edge and the horizontal..

8-Centric relation is:

A. Eccentric relation.
B. Orientation jaw relation.
C. Horizontal jaw relation.
D. Lateral jaw relation.
E. Vertical jaw relation.

9- If mandibular trial denture moves when the patient raise tongue posteriorly, this indicates overextension
of:
A. Labial flange.
B. Lingual flange anteriorly.
C. Buccal flange.
D. Lingual flange in premolar region.
E. Lingual flange in posterior area.

10- To aid the patient to retrude the mandible during centric relation registration, he/ she asked to:
A. Wetting lower lip by the tongue.
B. Keep tongue in floor of mouth.
C. Protrude the tongue.
D. Raise the tongue backwards.
E. Move tongue from side to side.
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3.In recording jaw relationship; the height of the maxillary wax rim is adjusted so that about:
A. 7 mm are shown from upper lip.
B. 6 mm are shown from upper lip.
C. 1 mm is shown from upper lip.
D. 5 mm are shown from upper lip.
E. 2 mm are shown from upper lip.
4.Opening or closing mandibular movement around a horizontal axis that is common to both condyles is
called
A. lateral.
B. hinge.
C. centric relation.
D. translatory excursion .

5.An instrument which simulates the movements of the mandible:

A. articulator.
B. ear bow.
C. face bow.
D. flask.
6.For try in stage; Both dentures upper and lower together we check
A. The peripheral outline.
B. Stability under occlusal stresses.
C. Tongue Space.
D. Position of occlusion.

7.Applying unilateral pressure on the occlusal surface of the trial denture causes its instability when:
A. Posterior teeth are set at ridge crest.
B. Posterior teeth are set outside the ridge.
C. There is high vertical dimension.
D. Occlusal plane parallel to the ridge.
E. There is low vertical dimension.

8.Public speakers and singers patient require ………………..for the complete denture.
A. Remounting
B. Perfect retention only.
C. Perfect appearance only
D. Perfect retention and particular attention to palatal shape and thickness

9.In history taking for complete denture patient's; increasing age

A. Increase the readiness to form new habits.
B. Decreases the ability to form new habits.
C. Has no effects on developing new habits.
D. Decrease the ability to form old habits.

10.For test the retention and prepheral seal of the anterior labial part of upper dentures
A. By applying upward and outward pressure at the tuberosity region.
B. By appling upward and outward pressure on the cingulae of the upper incisors.
C. Pulling the anterior labial part of the upper denture vertically downward.
D. By applying upward and outward pressure at the canine region.
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1. Rest position is obtained by asking the patient to:
A. Say short and gentile ah different times.
B. Repeat a series of vigorous ah.
C. Bend his/her head forward.
D. Close his/her teeth together.
E. Swallow and relax and repeat letter M

2. For making mandibular impression right-handed operator stands:

A. in front to the left of the patient.
B. In front and to the right of the patient.
C. Back left of the patient.
D. Back right of the patient.
E. Directly back of the patient.

3. Border Positions of the Mandible Are Valuable When Making Jaw Relation Records As They Are
A. The only positions of the mandible
B. Static positions
C. The only repeatable positions
D. Non repeatable positions

4. The resistance of the denture to withstand horizontal displacement forces:

A. Retention.
B. Support.
C. Stability.
D. Strengthening.

5. For making an impression the patient is seated in:

A. Upright position with the head tilted forward.
B. Forward position.
C. Backward position.
D. Upright position with the head tilted backward.
E. Upright position with the patient’s head, neck and back in one line.
6. Immediate movement of mandibular denture upon tongue raising indicates:
A. Mandibular posterior teeth are narrow.
B. Over extended lingual flange.
C. Cramped tongue.
D. Mandibular posterior teeth are outside the ridge.
E. Underextended lingual flange.

7. The primary stress bearing area in the upper arch is:

A. Posterior palatal seal areas.
B. Alveolar ridge.
C. Palate.
D. Buccal flange.

10. For making maxillary impression the patient is seated so that his mouth is in the level of operators:
A. Mouth.
B. Shoulder.
C. Wrist.
D. Elbow
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1. For making mandibular impression the patient is seated so that his mouth is in the level of operator's:
A. Shoulder.
B. Elbow.
C. Wrist.
D. Eye.
E. Mouth.

2. Syneresis of alginate means

A. Porosity of alginate
B. Evaporation of water.
C. Absorption of water.
D. Dehydration of water.

3. Short term variables affecting VDR:

A. Sex
B. Age
C. Respiration
D. Obesity

4. Attraction between unlike molecules is known as

A. Surface tension
B. Capillary attraction
C. Adhesion
D. Cohesion
7. The three main functions of a complete denture?
A. Aesthetic, mastication, sound.
B. Mastication, phonetic, speech.
C. Sound, speech, aesthetic.
D. Aesthetic, mastication, phonetic

8.The angle of inclination of a line extending through the incisal edge of upper and lower anterior teeth, to
the horizontal plane.
A. lncisal angle
B. Incisal pin
C. Condylar angle
D. lncisal path

9.lnterocclusal distance is also known as:

A. Cobleman space.
B. Seeway space.
C. Freeway space.
D. lnterarch space.
E. Leeway space.

10.The heel of the lower denture should extend up to mandibular ramus to buttress the denture against:
A. Pressure of left cheek.
B. Pressure of the mylohyoid muscle.
C. Forward pressure of the tongue. *
D. Backward pressure of lower lip.
E. Pressure of right cheek.
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1.If mandibular trial denture moves when the patient protrudes tongue, this indicates overextension of:
A. Lingual flange in premolars regions.
B. Lingual flange in posterior area.
C. Labial flange.
D. Lingual flange anteriorly. *

4.Inter-occlusal distance in rest position of the mandible is normally:

A. 10 mm.
B. 1mm.
C. 7 mm.
D. 3mm.
6.With most professional men and whose occupation entails intimate contact with their fellows,
A. Appearance and retention of the denture are more important than efficiency.
B. Efficiency of the denture are more important than appearance and retention
C. Only the appearance is important
D. Efficiency, appearance and retention of the denture are important

7.The resistance to tissue away forces is called:

A. Stability.
B. Retention.
C. Support.
D. Strengthening.

8.The compound impression material has a low thermal conductivity so it must be immersed in the warm
bath water.
A. Short time to prevent leach out some of the volatile constituents and alter its properties.
B. Sufficient time to ensure complete softening.
C. It has high thermal conductivity and the statement is wrong.
D. Option 2
E. After immersed in cold water.

9.Occlusal rims should be designed with?

A. Neutral zone. *
B. Curve of spee zone.
C. Balancing zone.
D. Occlusal zone.