Dental Anatomy: Quiz 7: Unit 7: Review Questions

At age 8, the sixth tooth from the midline in each quadrant of the maxillary arch, is normally:

(1) a deciduous second molar.

(2) a permanent first molar, which is partially erupted.

(3) a permanent first molar, which is fully erupted, but has incomplete root formation.

(4) a permanent first molar, which is fully erupted and has a completely formed root.

(5) not erupted.

3. a permanent first molar, which is fully erupted, but has incomplete root formation

The maxillary third molar normally has its root formation completed at:

(1) 14-16 years.

(2) 15-17 years.

(3) 17-21 years.

(4) 18-25 years.

(5) 21-26 years.

4. 18-25 yrs

On the crown of a permanent maxillary first molar, the primary groove which normally terminates in the lingual pit is the:

(1) distal groove.

(2) DL triangular groove.

(3) DB triangular groove.

(4) distal marginal groove.

(5) distolingual groove.

5. Distolingual groove

On a permanent maxillary first molar, the root branch which is generally the smallest is normally the:

(1) MB root.

(2) lingual root.

(3) ML root.

(4) DL root.

(5) DB root.

5. DB root

Consider the two buccal cusps of a permanent maxillary first molar as viewed from the facial aspect. When compared to the DB cusp, the MB cusp normally:

(1) is wider.

(2) is sharper.

(3) is less bulky.

(4) exhibits all of the above features.

(5) exhibits none of the above features.

1. is wider

On the occlusal surface of the permanent maxillary first molar, the correct name for the primary groove which extends from the distal pit to the mesial pit, is the:

(1) distolingual groove.

(2) buccal groove.

(3) central groove.

(4) distal groove.

(5) distal marginal groove.

3. Central groove

When compared to the permanent maxillary first molar, the crown of the second molar normally exhibits a:

(1) larger DB cusp.

(2) larger DL cusp.

(3) greater occlusocervical crown dimension.

(4) greater mesiodistal crown dimension.

(5) shorter DL groove.

5. shorter DL groove

The permanent maxillary first molar normally has ML and DL cusps. Premolars which also commonly exhibit two lingual cusps include:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) mandibular first premolars.

(4) mandibular second premolars.

(5) all of the above premolars.

4. mand second premolars

A permanent posterior tooth that has a buccolingual crown dimension which is greater than its mesiodistal crown dimension, and it has two roots, is most likely a:

(1) maxillary first premolar.

(2) mandibular first premolar.

(3) maxillary second molar.

(4) mandibular second premolar.

(5) maxillary first molar.

1. max first premolar

A twelve-year molar normally:

(1) is the eighth tooth from the midline in a quadrant.

(2) is a permanent first molar.

(3) is a succedaneous tooth.

(4) replaces a deciduous second molar.

(5) is a permanent second molar.

5. is a permanent second molar

When a certain permanent maxillary molar is viewed from the facial aspect, with roots pointing up, the two buccal cusps are of unequal size, and the cusp which is to the viewer's right is generally smaller and shorter, with a sharper tip, than the other cusp. In addition, the two

buccal roots are of about the same length. This tooth is most likely a:

(1) right second molar.

(2) right first molar.

(3) left first molar.

(4) left second molar.

(5) right third molar.

4. left second molar

In the maxillary left quadrant, the permanent tooth with the largest general crown size is tooth:

(1) # 1.

(2) # 2.

(3) # 3.

(4) # 14.

(5) # 15.

#14

Accessory teeth which are sometimes found distal to the maxillary third molar area, are known as:

(1) Hutchinson's molars.

(2) mulberry molars.

(3) peg third molars.

(4) impactions.

(5) supernumeraries.

5. supernumeraries

Of the following heights of contour for the crown of the

permanent maxillary first molar, the one which is located

in the cervical third, is the:

(1) lingual margin of the mesial surface.

(2) lingual surface.

(3) mesial surface.

(4) mesial margin of the buccal surface.

(5) buccal margin of the distal surface.

5. B margin of the D surface

The most common occlusal crown form for a permanent

maxillary second molar is:

(1) triangular shaped.

(2) rhomboidal shaped.

(3) pentagonal shaped.

(4) trapezoidal shaped.

(5) heart-shaped.

2. rhomboidal shaped

On the occlusal surface of the permanent maxillary first

molar, the structure which normally forms the distal

boundary of the mesial triangular fossa, is the:

(1) mesial marginal ridge.

(2) mesial cusp ridge of the MB cusp.

(3) oblique ridge.

(4) distal cusp ridge of the ML cusp.

(5) transverse ridge.

5. transverse ridge

The occlusal table of a permanent maxillary first molar

normally exhibits:

(1) 4 triangular ridges.

(2) 3 transverse ridges.

(3) 2 oblique ridges.

(4) 5 triangular ridges.

(5) 4 marginal ridges.

4. 5 triangular ridges

When the crown of the permanent maxillary first molar is viewed from the occlusal aspect, normally:

(1) the mesiodistal and buccolingual dimensions are approximately equal.

(2) the MB line angle is obtuse.

(3) the DL line angle is acute.

(4) all of the above features are present.

(5) none of the above features are present.

3. the DL line angle is acute

The combined total number of functional inclined planes

normally associated with both buccal cusps of a permanent

maxillary first molar is:

(1) 2.

(2) 4.

(3) 6.

(4) 8.

(5) 12.

2 .4

The maxillary third molar normally begins calcifying at:

(1) birth.

(2) 1 1/2 - 2 1/2 years.

(3) 3-5 years.

(4) 6-7 years.

(5) 7-9 years.

5. 7-9 yrs

On the crown of a permanent maxillary first molar, the

only primary groove which normally crosses over the

oblique ridge is the:

(1) distolingual groove.

(2) distal marginal groove.

(3) buccal groove.

(4) central groove.

(5) mesial groove.

4. central groove

On the crown of the permanent maxillary first molar, the

largest (bulkiest) cusp, is normally the:

(1) MB cusp.

(2) ML cusp.

(3) DB cusp.

(4) DL cusp.

(5) cusp of Carabelli.

2. ML cusp

When compared to the permanent maxillary first molar, the maxillary second molar normally has a relatively:

(1) smaller DB cusp.

(2) smaller MB cusp.

(3) larger DL cusp.

(4) larger cusp of Carabelli.

(5) larger crown.

1. smaller DB cusp

On the crowns of permanent maxillary molars, the contact

area which is the smallest in size is found on the:

(1) mesial surface of the maxillary first molar.

(2) distal surface of the maxillary first molar.

(3) mesial surface of the maxillary second molar.

(4) distal surface of the maxillary second molar.

(5) mesial surface of the maxillary third molar.

1. M surface of the max first molar

On the occlusal surface of a permanent maxillary first

molar, the structure which is immediately to the mesial

of the oblique ridge is the:

(1) distolingual groove.

(2) distal fossa.

(3) mesial marginal ridge.

(4) transverse ridge.

(5) central fossa.

5. central fossa

The permanent maxillary third molars are universal teeth:

(1) # 1 and # 2.

(2) # 2 and # 15.

(3) # 3 and # 14.

(4) # 14 and # 15.

(5) # 16 and # 1.

5. #16 and #1

A 50 year old patient has a full mouth set of x-rays,

from which the dentist discovers the maxillary third

molars are present in the alveolar process, but they are

not visible clinically. The condition associated with

these third molars is correctly termed:

(1) ankylosis.

(2) congenital absence.

(3) supernumerary.

(4) Hutchinson's teeth.

(5) impaction.

5. impaction

At age 5, permanent maxillary molars which have normally

initiated calcification, include:

(1) first molars only.

(2) first and second molars only.

(3) first and third molars only.

(4) second and third molars only.

(5) all maxillary molars.

2. first and second molars only

At age 13 1/2, the seventh tooth from the midline in each

quadrant of the maxillary arch, is normally:

(1) a permanent first molar with incomplete root.

(2) a permanent first molar with completed root.

(3) a permanent second molar with completed root.

(4) a permanent second molar with incomplete root.

(5) not erupted.

4. a permanent second molar with incomplete root

Of the primary grooves which unite in the distal pit on

the occlusal surface of permanent maxillary first molars,

the one which has no counterpart among the grooves of the

mesial pit on the same tooth is the:

(1) central groove.

(2) DB triangular groove.

(3) DL triangular groove.

(4) distal marginal groove.

(5) distolingual groove.

5. DL groove

The root structure of a permanent maxillary first molar

normally exhibits:

(1) a bifurcation.

(2) no root trunk.

(3) a lamination.

(4) a trifurcation.

(5) longitudinal grooves in all proximal root surfaces.

4. a trifurcation

In the occlusal third of the buccal crown surface of the

permanent maxillary first molar, the structure which is

normally located just mesial to the occlusogingival

concavity containing the buccal groove is the:

(1) buccal ridge of the MB cusp.

(2) buccal ridge of the DB cusp.

(3) buccocervical ridge.

(4) mesiodistal concavity.

(5) mesiobuccal line angle.

1. B ridge of the MB cusp

On the crown of a permanent maxillary first molar, the

inclined plane of the DB cusp which is located between

the distal cusp ridge and the cusp ridge which forms a

portion of the oblique ridge, is:

(1) functional and the DB inclined plane.

(2) non-functional and the DB inclined plane.

(3) functional and the ML inclined plane.

(4) non-functional and the DL inclined plane.

(5) functional and the DL inclined plane.

5. functional and the DL inclined plane

The permanent maxillary molars normally have two lingual cusps of unequal size. Premolars which often exhibit the same arrangement include:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) mandibular second premolars.

(4) mandibular first premolars.

(5) all of the premolars.

3. mand second premolars

An oblique ridge is a normal finding on the crowns of:

(1) mandibular premolars.

(2) maxillary premolars.

(3) permanent maxillary molars.

(4) all of the above posterior teeth.

(5) none of the above posterior teeth.

3. permanent max molars

Maxillary molars are the only group of permanent teeth

which normally exhibit:

(1) a transverse ridge.

(2) a masticatory function of grinding.

(3) at least two roots.

(4) an oblique ridge.

(5) at least two cusps.

4. an oblique ridge

When a certain permanent maxillary molar is viewed from

the facial aspect, with roots pointing up, the two buccal

cusps are of unequal size, and the cusp which is to the

viewer's right is generally smaller and shorter, with a

sharper tip, than the other cusp. In addition, the two

buccal roots are of about the same length. This tooth is

most likely a:

(1) right second molar.

(2) right first molar.

(3) left first molar.

(4) left second molar.

(5) right third molar.

4. left second molar

When compared to the permanent maxillary first molar,

the crown of the second molar normally exhibits:

(1) a longer distolingual groove.

(2) a deeper cervical concavity on the mesial surface.

(3) a much greater buccolingual dimension.

(4) more variation in the size of the DL cusp.

(5) a greater mesiodistal dimension.

4. more variation in the size of the DL cusp

On the crown of the permanent maxillary first molar,

the distal contact area is normally:

(1) wider occlusogingivally than buccolingually.

(2) larger in size than the mesial contact area on the maxillary second molar.

(3) located well toward the buccal.

(4) located well toward the occlusal.

(5) located in the middle third occlusocervically.

5. located in the middle third OC

The cusp which is ALWAYS absent from the crown of a

permanent maxillary second or third molar is the:

(1) MB cusp.

(2) ML cusp.

(3) DB cusp.

(4) DL cusp.

(5) cusp of Carabelli.

5. cusp of Carabelli

On the occlusal surface of the permanent maxillary first

molar, the structure which normally forms the mesial

boundary of the mesial triangular fossa is the:

(1) distal marginal ridge.

(2) mesial cusp ridge of the MB cusp.

(3) transverse ridge.

(4) oblique ridge.

(5) mesial marginal ridge.

5. M marginal ridge

On the occlusal surface of the permanent maxillary first

molar, the oblique ridge connects the:

(1) ML and DB cusps.

(2) ML and DL cusps.

(3) MB and DL cusps.

(4) MB and ML cusps.

(5) DB and DL cusps

1. ML and DB cusps

From the occlusal aspect of a permanent maxillary first

molar, normally the:

(1) MB line angle is obtuse.

(2) crown is wider mesiodistally than buccolingually.

(3) DB line angle is acute.

(4) crown outline is trapezoidal.

(5) ML line angle is obtuse.

5. ML line angle is obtuse

On the buccal crown surface of the permanent maxillary

first molar, the structure which is normally located just

distal to the buccal cusp ridge of the DB cusp, is the:

(1) MB line angle.

(2) buccal groove.

(3) buccocervical ridge.

(4) buccal cusp ridge of the MB cusp.

(5) DB line angle.

5. DB line angle

At age 5, the sixth tooth from the midline in each

quadrant of the maxillary arch normally is:

(1) a deciduous second molar.

(2) an erupted permanent first molar with incomplete

root formation.

(3) an erupted permanent first molar with complete root

formation.

(4) not erupted.

(5) a deciduous first molar.

4. not erupted

The maxillary third molar normally erupts at:

(1) 6-7 years.

(2) 12-13 years.

(3) 14-16 years.

(4) 17-21 years.

(5) 18-25 years.

4. 17-21 years

On the crown of a permanent maxillary first molar, the

pit which is normally located at the lingual termination

of the distolingual groove, is the:

(1) mesial pit.

(2) distal pit.

(3) central pit.

(4) lingual pit.

(5) buccal pit.

4. lingual pit

On a permanent maxillary first molar, the root branch

which is generally the smallest is normally the:

(1) MB root.

(2) lingual root.

(3) ML root.

(4) DL root.

(5) DB root.

5. DB root

On the crown of the permanent maxillary first molar, the

sharpest cusp is normally the:

(1) MB cusp.

(2) ML cusp.

(3) DB cusp.

(4) DL cusp.

(5) cusp of Carabelli.

3. DB cusp

On the occlusal surface of the permanent maxillary first

molar, the buccal groove originates in the:

(1) lingual pit.

(2) mesial pit.

(3) distal pit.

(4) central pit.

(5) distolingual pit.

4. central pit

The crown of the permanent maxillary first molar is

longer occlusogingivally than the crowns of:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) permanent maxillary second molars.

(4) all of the above posterior teeth.

(5) none of the above posterior teeth.

3. permanent max second molars

The facial height of contour is normally located in the

cervical third of the crown on:

(1) permanent maxillary anteriors.

(2) permanent maxillary premolars.

(3) permanent maxillary molars.

(4) all permanent maxillary teeth.

(5) none of the permanent maxillary teeth.

4. all permanent max teeth

Molars are the only group of permanent teeth which

normally exhibit:

(1) an occlusal surface.

(2) a transverse ridge.

(3) at least two roots.

(4) a masticatory function of grinding.

(5) at least two buccal cusps.

5. at least two buccal cusps

Of the following permanent teeth, the one which is a

wisdom tooth is:

(1) # 1.

(2) # 2.

(3) # 3.

(4) # 14.

(5) # 15.

1. #1

The permanent maxillary third molar sometimes exhibits a

tiny one cusp crown form with no occlusal anatomy which

looks like a peg. The other permanent tooth, that has

been previously studied, which may exhibit a diminuitive

peg crown form that looks very similar to this third

molar is the:

(1) maxillary first premolar.

(2) maxillary lateral incisor.

(3) mandibular canine.

(4) mandibular second premolar.

(5) mandibular central incisor.

2. max lateral incisor

The permanent maxillary first molar normally begins

calcifying at:

(1) birth.

(2) 2-3 years.

(3) 7-9 years.

(4) 9-10 years.

(5) 12-16 years.

1. birth

Although occlusal crown form for both permanent maxillary

second and third molars is somewhat variable, the most

common form for these two teeth is:

(1) a heart shaped second molar and a rhomboidal third.

(2) a rhomboidal second molar and a heart-shaped third.

(3) heart shaped second and third molars.

(4) rhomboidal second and third molars.

2. a rhomboidal second molar and a heart-shaped third

On the occlusal surface of the permanent maxillary first

molar, the structure which is located immediately to the

mesial of the distal fossa, is the:

(1) mesial marginal ridge.

(2) distal marginal ridge.

(3) transverse ridge.

(4) central pit.

(5) oblique ridge.

5. oblique ridge

On the crown of a permanent maxillary first molar, the

distal cusp ridge of the ML cusp, normally forms the:

(1) buccal portion of the transverse ridge.

(2) lingual portion of the transverse ridge.

(3) buccal portion of the oblique ridge.

(4) lingual portion of the oblique ridge.

(5) lingual portion of the mesial marginal ridge.

4. lingual portion of the oblique ridge

On the buccal crown surface of the permanent maxillary

first molar, the structure which is normally located just

distal to the buccal cusp ridge of the DB cusp, is the:

(1) MB line angle.

(2) buccal groove.

(3) buccocervical ridge.

(4) buccal cusp ridge of the MB cusp.

(5) DB line angle.

5. DB line angle

The permanent maxillary first molar normally has ML and

DL cusps. Premolars which also commonly exhibit two

lingual cusps include:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) mandibular first premolars.

(4) mandibular second premolars.

(5) all of the above premolars.

4. mand second premolars

An oblique ridge is a normal finding on the crowns of:

(1) mandibular premolars.

(2) maxillary premolars.

(3) permanent maxillary molars.

(4) all of the above posterior teeth.

(5) none of the above posterior teeth.

3. permanent max molars

On the crown of the permanent maxillary first molar, the

cusp of Carabelli is associated anatomically with the:

(1) MB cusp.

(2) ML cusp.

(3) DB cusp.

(4) DL cusp.

2. ML cusp

On the occlusal surface of the permanent maxillary first

molar, the primary grooves which normally unite in the

central pit, are the:

(1) buccal and lingual grooves.

(2) central and buccal grooves.

(3) central and lingual grooves.

(4) central and distolingual grooves.

(5) buccal, lingual, and central grooves.

2. central and buccal grooves

When compared to the permanent maxillary first molar, the crown of the second molar normally exhibits:

(1) a shorter DL groove.

(2) a sharper DB cusp.

(3) a smaller DL cusp.

(4) all of the above features.

(5) none of the above features.

4. all of the above

On the lingual crown surface of the permanent maxillary

first molar, the height of contour is normally located:

(1) in the occlusal third.

(2) in the middle third.

(3) in the cervical third.

(4) at the junction of the occlusal and middle thirds.

(5) at the junction of the middle and cervical thirds.

2. in the middle third

On the occlusal surface of the permanent maxillary first

molar, the structure which is located immediately to the

mesial of the distal fossa, is the:

(1) mesial marginal ridge.

(2) distal marginal ridge.

(3) transverse ridge.

(4) central pit.

(5) oblique ridge.

5. oblique ridge

A young adult dental patient exhibits no evidence of

maxillary third molars, either clinically or by x-ray,

and there is no history of extraction. The condition

most likely associated with these teeth is termed:

(1) supernumerary.

(2) ankylosis.

(3) congenital absence.

(4) impaction.

(5) supraeruption.

3. congenital absence

The permanent maxillary second molar normally has enamel formation completed at:

(1) 3-4 years.

(2) 6-7 years.

(3) 7-8 years.

(4) 10-12 years.

(5) 12-16 years.

3. 7-8 years

On the crown of the permanent maxillary first molar, the

distolingual groove normally:

(1) is a secondary groove.

(2) originates in the central pit.

(3) originates and terminates in pits.

(4) parallels the transverse ridge on its distal margin.

(5) parallels the transverse ridge on its mesial margin.

3. originates and terminates in pits

In a mid root cross section, the root branch of a

permanent maxillary first molar which normally exhibits

the smallest outline, is the:

(1) MB root.

(2) ML root.

(3) DB root.

(4) DL root.

(5) lingual root.

3. DB root

If the crown of the permanent maxillary first molar is

viewed from the mesial aspect, the total number of cusps

which are visible (excluding the cusp of Carabelli) is:

(1) 1.

(2) 2.

(3) 3.

(4) 4.

(5) 5.

2. 2

On the occlusal surface of the permanent maxillary first

molar, the distal pit is normally the point of union of:

(1) 1 primary groove.

(2) 2 primary grooves.

(3) 3 primary grooves.

(4) 4 primary grooves.

(5) 5 primary grooves.

5. 5 primary grooves

From the buccal aspect of the crown of the permanent

maxillary first molar, the outline is normally convex,

from the cervical line to the contact area, on:

(1) the mesial margin only.

(2) the distal margin only.

(3) both mesial and distal margins.

(4) neither mesial nor distal margin.

2. the D margin only

On the crown of the permanent maxillary first molar, the

inclined plane of the MB cusp which is situated between

the mesial cusp ridge, and the cusp ridge which forms a

portion of the transverse ridge, is the:

(1) MB inclined plane.

(2) ML inclined plane.

(3) DB inclined plane.

(4) DL inclined plane.

(5) BL inclined plane.

2. ML inclined plane

The crown size of the permanent maxillary first molar is

generally larger than the crown size of:

(1) the maxillary premolars.

(2) the permanent maxillary second molar.

(3) the permanent maxillary third molar.

(4) all of the above permanent teeth.

(5) none of the above permanent teeth.

4. all of the above

On the crown of the permanent maxillary first molar,

those lateral surfaces which exhibit a generally

trapezoidal outline include:

(1) buccal surfaces.

(2) lingual surfaces.

(3) proximal surfaces.

(4) all of the above surfaces.

(5) none of the above surfaces

4. all of the above

In the maxillary right quadrant, the permanent tooth

which is sixth from the midline:

(1) is # 2.

(2) replaces # 1d.

(3) is # 3.

(4) replaces # 2d.

(5) is # 14.

3. is #3

On the crown of the permanent maxillary first molar, the

height of contour of the buccal surface is sometimes

associated with the:

(1) buccal cusp ridges of the buccal cusps.

(2) tips of the buccal cusps.

(3) contact areas.

(4) mesiodistal concavity in the middle third.

(5) buccocervical ridge.

5. BC ridge

The occlusal table of a permanent maxillary first molar

normally exhibits:

(1) 4 triangular ridges.

(2) 3 transverse ridges.

(3) 2 oblique ridges.

(4) 5 triangular ridges.

(5) 4 marginal ridges.

4. 5 triangular ridges

From the distal aspect of the crown of a permanent

maxillary first molar, the total number of cusps which

are normally visible is:

(1) 1.

(2) 2.

(3) 3.

(4) 4.

(5) 5.

4. 4

The permanent maxillary first molar normally has enamel

formation completed at:

(1) birth.

(2) 3-4 years.

(3) 6-7 years.

(4) 7-8 years.

(5) 10-12 years.

2. 3-4 years

The two buccal root branches are about the same length as each other on:

(1) permanent maxillary first molars only.

(2) permanent maxillary second molars only.

(3) both permanent maxillary first and second molars.

(4) neither permanent maxillary first or second molar.

2. permanent max second molars only

If the crown of a permanent maxillary first molar is

viewed from the facial aspect, the total number of cusp

tips which are normally visible is:

(1) 1.

(2) 2.

(3) 3.

(4) 4.

(5) 5.

3. 3

Crown dimensions which are about the same for both

permanent maxillary first and second molars, include:

(1) only the buccolingual dimension.

(2) only the mesiodistal dimension.

(3) only the occlusocervical dimension.

(4) all of the above dimensions.

(5) none of the above dimensions.

1. only the BL dimension

On the crowns of permanent maxillary molars, the contact

area which is the smallest in size is found on the:

(1) mesial surface of the maxillary first molar.

(2) distal surface of the maxillary first molar.

(3) mesial surface of the maxillary second molar.

(4) distal surface of the maxillary second molar.

(5) mesial surface of the maxillary third molar.

1. M surface of the max first molar

Besides the permanent maxillary molars, other previously

studied permanent teeth which often exhibit a root trunk

include:

(1) mandibular first premolars.

(2) mandibular second premolars.

(3) maxillary second premolars.

(4) maxillary first premolars.

(5) all of the above premolars.

4. max first premolars

Permanent maxillary molar crowns normally:

(1) are wider buccolingually than mesiodistally.

(2) are longer occlusogingivally than are the crowns

of the maxillary premolars.

(3) are generally trapezoidal in outline from the

occlusal aspect.

(4) exhibit all of the above features.

(5) exhibit none of the above features.

1. wider BL than MD

The permanent maxillary second molar normally has its root

formation completed at:

(1) 12-13 years.

(2) 13-15 years.

(3) 14-16 years.

(4) 15-17 years.

(5) 17-19 years.

3. 14-16 years

From the occlusal aspect, the crown of the permanent

maxillary first molar has an outline best described as:

(1) rhomboidal.

(2) rectangular.

(3) triangular.

(4) trapezoidal.

(5) square.

1. rhomboidal

On the crown of the permanent maxillary first molar, the

mesial margin of the buccal surface, from the contact

area to the cervical line, is normally:

(1) convex.

(2) concave.

(3) both convex and concave.

(4) straight.

(5) quite irregular.

4. straight

On the crown of a permanent maxillary first molar, the

total number of functional inclined planes which are

associated with the MB cusp is:

(1) 2.

(2) 4.

(3) 6.

(4) 8.

(5) 12.

1. 2

The dimensions of permanent maxillary molars are generally

greater than those of maxillary premolars in each of the

following, EXCEPT the:

(1) mesiodistal crown dimension.

(2) occlusogingival crown dimension.

(3) buccolingual crown dimension.

(4) root length.

2. OG crown dimension

A permanent posterior tooth which has two roots and two

cusps is most likely a:

(1) maxillary first or second molar.

(2) maxillary first premolar.

(3) maxillary second premolar.

(4) mandibular first premolar.

(5) mandibular second premolar.

2. max first premolar

The permanent maxillary second molar normally:

(1) is a succedaneous tooth.

(2) has a distal contact with the permanent first molar.

(3) replaces the deciduous second molar.

(4) exhibits all of the above features.

(5) exhibits none of the above features.

5. none of the above

When compared to the permanent maxillary first molar, the crown of the second molar is normally wider:

(1) occlusogingivally.

(2) mesiodistally.

(3) buccolingually.

(4) in all three of the above dimensions.

(5) in none of the above dimensions.

5. none of the above

On the crowns of permanent maxillary molars, the height

of contour is normally located in the cervical third on:

(1) the facial surface.

(2) the lingual surface.

(3) the mesial surface.

(4) the distal surface.

(5) all of the above surfaces.

1. the facial surface

On the occlusal surface of a permanent maxillary first

molar, the central fossa is bounded on the mesial by the:

(1) mesial marginal ridge.

(2) transverse ridge.

(3) mesial cusp ridge of the DB cusp.

(4) oblique ridge.

(5) distal cusp ridge of the ML cusp.

2. transverse ridge

On the mesiobuccal cusp of the permanent maxillary first

molar, the two inclined planes which are considered to be

functional are the:

(1) MB and DB inclined planes.

(2) MB and ML inclined planes.

(3) ML and DL inclined planes.

(4) ML and DB inclined planes.

(5) MB and DL inclined planes.

3. ML and DL inclined planes

The mesial surface is generally trapezoidal in shape

on the crowns of:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) permanent maxillary molars.

(4) all of the permanent maxillary posterior teeth.

(5) none of the permanent maxillary posterior teeth.

4. all of the permanent max post teeth