Dental Anatomy: Quiz 5: Unit 5: Review Questions

The root of the max first premolar is normally completely formed at:

12-13 yo

Endodontic procedures can be completed for the max second premolar when the root is fully formed at:

12-14 yo

On the crowns of max premolars, the marginal groove which is most often present is the (mesial/ distal) of the maxillary (first/ second) premolar.

Mesial of the max first premolar

The total number of transverse ridges normally found on the occlusal surface of a max premolar is:

1

Of the following choices, a longitudinal groove of the

root is most likely to be present on the:

(1) mesial surface of the maxillary first premolar.

(2) distal surface of the maxillary first premolar.

(3) mesial surface of the maxillary second premolar.

(4) distal surface of the maxillary second premolar.

(5) mesial surface of the maxillary canine.

1. mesial surface of the max first

In cross section at the neck of the tooth, the maxillary

second premolar root is normally:

(1) wider mesiodistally than buccolingually.

(2) wider mesiodistally at the buccal than the lingual.

(3) concave on its mesial outline.

(4) circular in outline.

(5) flat on its buccal outline.

2. wider mesiodistally at the buccal than the lingual

On the buccal crown surface of the maxillary premolars,

the structure which is located immediately distal to the

mesiobuccal developmental depression is the:

Buccal ridge

A distinct concavity of the mesial surface is normally

found on the crowns of:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) permanent maxillary canines.

(4) all of the above teeth.

(5) none of the above teeth.

1. max firsts

On the lingual surface of the crown of a maxillary first premolar, the height of contour is normally found in the:

(1) occlusal third.

(2) same third as on the buccal surface of that tooth.

(3) same third as on the labial surface of anteriors.

(4) middle third.

(5) same third as on the lingual surface of anteriors.

4. middle third

On the crown of the maxillary first premolar, the lingual

surface normally:

(1) has a prominent lingual ridge.

(2) is wider mesiodistally than the buccal surface.

(3) has a shorter cusp tip than the buccal cusp tip.

(4) has a cusp tip which is centered mesiodistally.

(5) is wider occlusogingivally than the buccal surface.

(3) has a shorter cusp tip than the buccal cusp tip.

A premolar which exhibits a greater buccolingual than

mesiodistal crown dimension, and of its two cusps, the

lingual cusp length is about a milimeter shorter than the

buccal cusp length is most likely a:

(1) maxillary first premolar.

(2) maxillary second premolar.

(3) mandibular first premolar.

(4) mandibular second premolar.

1. max first premolar

Facial developmental depressions are a normal finding on

the crowns of:

(1) permanent maxillary incisors.

(2) permanent maxillary canines.

(3) maxillary premolars.

(4) all of the above teeth.

(5) none of the above teeth.

4. all of the above

Besides molars, permanent maxillary teeth which normally erupt prior to the maxillary first premolar include:

(1) central and lateral incisors only.

(2) canines only.

(3) second premolars only.

(4) both incisors and second premolars.

(5) canines and second premolars.

1. central and lateral incisors only

From the occlusal aspect, the outline of the crown

of maxillary premolars is roughly (what shape?):

hexagonal

At age 13, the fifth tooth from the midline in the

maxillary left quadrant is universal tooth:

#13

An anomalous condition of the maxillary second premolar

described in the text involves:

(1) an extra cusp.

(2) an extra occlusal pit.

(3) three root branches.

(4) a tubercle.

(5) one occlusal pit less than normal.

5. one occlusal pit less than normal

At age 14, the fourth tooth from the midline in each

quadrant of the maxillary arch, is normally a:

(1) deciduous first molar.

(2) deciduous second molar.

(3) fully erupted first premolar with complete root.

(4) fully erupted second premolar with incomplete root.

(5) fully erupted second premolar with complete root.

(3) fully erupted first premolar with complete root.

The maxillary second premolar normally erupts:

(1) at age 9-10.

(2) prior to the maxillary first premolar.

(3) at age 12-14.

(4) prior to the time its enamel formation is completed.

(5) prior to the time its root formation is completed.

5. prior tot he time its root formation is completed

On the crown of a maxillary premolar, the cusp ridge of

the buccal cusp which extends from the cusp tip to the

distobucco-occlusal point angle, is the:

Distal cusp ridge

On the crowns of maxillary premolars, the marginal groove

which is most often present is the:

(1) mesial of the maxillary first premolar.

(2) distal of the maxillary first premolar.

(3) distal of the maxillary second premolar.

(4) mesial of the maxillary second premolar.

1. Mesial of the max first

On the occlusal surface of maxillary premolars, the

structure which is formed by the combination of the

buccal cusp ridge of the lingual cusp and the lingual

cusp ridge of the buccal cusp, is the:

(1) mesial marginal ridge.

(2) distal boundary of the distal triangular fossa.

(3) transverse ridge.

(4) mesial boundary of the mesial triangular fossa.

(5) distal marginal ridge.

3. transverse ridge

On the crown of a maxillary second premolar, the inclined

plane which is located between the mesial cusp ridge of

the lingual cusp and the lingual triangular ridge is:

(1) functional.

(2) the ML inclined plane of the lingual cusp.

(3) both of the above.

(4) neither of the above.

1. functional

The branches of a two-rooted maxillary first premolar are

correctly named:

(1) type I and type II.

(2) single and laminated.

(3) buccal and lingual.

(4) type I and type III.

(5) mesial and distal.

3. buccal and lingual

When the maxillary premolars are viewed from the buccal

aspect, the occlusal crown outline reveals mesial and

distal cusp ridges (occlusal slopes) which normally:

(1) are equal in length on both premolars.

(2) are equal in length on the first premolar, but on the second premolar the distal slope is longer.

(3) are equal in length on the second premolar, but on the first premolar the mesial slope is longer.

(4) are unequal in length on both premolars; the mesia slope is longer on the first premolar and the distal slope is longer on the second premolar.

(5) are unequal in length on both premolars; the mesial slope is longer on both first and second premolars.

4. are unequal in length on both premolars; the mesial slope is longer on the first premolar and the distal slope is longer on the second premolar

On the mesial surface of the maxillary first premolar,

the cervical line normally:

(1) is convex toward the apical.

(2) is relatively straight.

(3) has a depth of curvature which is greater than that of anterior teeth.

(4) has a depth of curvature which is the same as that of the distal of the canine.

(5) has a depth of curvature which is equal to that of the distal of the same tooth.

4. has a depth of curvature which is the same as that of the distal canine

The maxillary first premolar has a height of contour that

is normally located in the middle third of the crown on (which surface?):

2. lingual surface

When viewing the maxillary second premolar from the

lingual aspect, normally the:

(1) lingual cusp tip is offset to the distal.

(2) lingual cusp tip is noticeably shorter than the buccal

cusp tip.

(3) lingual surface is wider mesiodistally than the buccal surface.

(4) cervical line is convex toward the occlusal.

(5) lingual cusp tip is relatively longer than on the first premolar.

5. lingual cusp tip is relatively longer than on the first premolar

All of the following structures are normally found on the

crown of a maxillary second premolar, EXCEPT a:

(1) central groove.

(2) buccal ridge.

(3) DL triangular groove.

(4) MB triangular groove.

(5) mesial concavity.

5. mesial concavity

On the lingual surface of the crown, the height of

contour is normally located in the middle third on:

(1) maxillary incisors.

(2) maxillary canines.

(3) maxillary premolars.

(4) all maxillary anteriors.

(5) all maxillary anteriors and premolars.

3. max premolars

Besides molars, permanent maxillary teeth which normally

erupt prior to the maxillary second premolar, include:

(1) central and lateral incisors only.

(2) first premolars only.

(3) both incisors and canines.

(4) both incisors and first premolars.

(5) canines and first premolars.

4. both incisors and first premolars

The permanent maxillary premolars:

(1) are also known as cuspids.

(2) are considered to be anterior teeth.

(3) have crowns which display approximately equal dimensions mesiodistally and buccolingually.

(4) are also termed mini-molars.

(5) are succedaneous teeth.

5. are succedaneous

Tooth # 5 is a succedaneous tooth which replaces deciduous tooth:

#2d

An anomaly which involves the occlusal surface of a

maxillary premolar features one centrally located pit

and no central groove. The tooth most likely to exhibit

this anomaly is the:

(1) first premolar with a type I root.

(2) first premolar with a type II root.

(3) first premolar with a type III root.

(4) second premolar.

4. second premolar

The maxillary first premolar normally has completed

enamel formation at:

5-6 yo

Root formation is normally complete for the maxillary

second premolar at:

12-14 yo

On the crown of a maxillary premolar, the buccal

triangular ridge is also known as the:

(1) buccal cusp ridge of the buccal cusp.

(2) lingual portion of the transverse ridge.

(3) lingual cusp ridge of the buccal cusp.

(4) buccal cusp ridge of the lingual cusp.

(5) lingual cusp ridge of the lingual cusp.

3. lingual cusp ridge of the buccal cusp

On the occlusal surface of maxillary premolars, the

groove which originates in the mesial pit, and extends

toward the MB line angle, before fading out, is the:

(1) ML triangular groove.

(2) MB secondary groove.

(3) central groove.

(4) MB triangular groove.

(5) mesial marginal groove.

4. MB triangular groove

On the occlusal surface of maxillary premolars, the

lingual boundary of the mesial triangular fossa is the:

(1) mesial marginal ridge.

(2) mesial cusp ridge of the lingual cusp.

(3) buccal cusp ridge of the lingual cusp.

(4) transverse ridge.

(5) distal marginal ridge.

2. mesial cusp ridge of the lingual cusp

On the occlusal surface of the maxillary first premolar,

the distal pit normally:

(1) is located in the central fossa.

(2) is located near the midpoint of the central groove.

(3) is the point of union of four primary grooves.

(4) is the point of union of five primary grooves.

(5) does not have a marginal groove originating in it.

(5) does not have a marginal groove originating in it.

On the occlusal surface of a maxillary premolar, the

inclined plane which is located immediately to the buccal

of the central groove and to the distal of the transverse

ridge is:

(1) the DB inclined plane of the buccal cusp.

(2) the DB inclined plane of the lingual cusp.

(3) functional.

(4) the MB inclined plane of the buccal cusp.

(5) the DL inclined plane of the lingual cusp.

3. fxnal

Of the following choices, a longitudinal groove of the

root is most likely to be present on the:

(1) mesial surface of the maxillary first premolar.

(2) distal surface of the maxillary first premolar.

(3) mesial surface of the maxillary second premolar.

(4) distal surface of the maxillary second premolar.

(5) mesial surface of the maxillary canine.

1. mesial surface of the max first premolar

The root of the maxillary second premolar is normally:

(1) wider mesiodistally than buccolingually.

(2) bifurcated.

(3) deflected to the mesial in the apical third.

(4) shorter than the root of the first premolar.

(5) ovoid in cross section at the mid root level.

(5) ovoid in cross section at the mid root level.

If the crown of a maxillary first premolar is viewed from

the buccal aspect, the mesial outline normally exhibits:

(1) an occlusal angle which is less prominent than the disto-occlusal angle.

(2) a gingival concavity which is not so great as that of the distal outline.

(3) a crest of curvature which is located at a more occlusal level than that of the distal outline.

(4) all of the above features.

(5) none of the above features.

(3) a crest of curvature which is located at a more occlusal level than that of the distal outline.

The proximal crown surface of a maxillary premolar which

does not normally have a marginal groove, and from which

aspect one cusp is usually quite a bit longer than the

other cusp, is most likely to be the:

(1) mesial surface of the first premolar.

(2) distal surface of the first premolar.

(3) mesial surface of the second premolar.

(4) distal surface of the second premolar.

(2) distal surface of the first premolar.

The maxillary second premolar has a height of contour

which is located in the cervical third of the crown on:

(1) the buccal surface.

(2) the lingual surface.

(3) the mesial surface.

(4) the distal surface.

(5) none of the above surfaces.

1. buccal

When the crown of the maxillary first premolar is viewed

from the lingual aspect, normally the:

(1) lingual cusp tip is centered mesiodistally.

(2) cervical line is symmetrically convex toward the occlusal.

(3) mesial cusp ridge of the lingual cusp is longer than the distal cusp ridge.

(4) distal outline is concave.

(5) buccal cusp tip is visible.

(5) buccal cusp tip is visible.

Maxillary second premolars normally exhibit:

(1) two roots.

(2) a mesial concavity of the crown.

(3) a buccal crown contour which is greatly inclined to the lingual.

(4) a lingual height of contour in the cervical third of the crown.

(5) a crown which is wider buccolingually than mesiodistally.

(5) a crown which is wider buccolingually than mesiodistally.

On the distal surface of the maxillary first premolar, the cervical line normally has a depth of curvature which is less than that on:

(1) the mesial surface of the same tooth.

(2) the mesial surface of the adjacent canine.

(3) the distal surface of the adjacent canine.

(4) all of the above surfaces.

(5) none of the above surfaces.

(4) all of the above surfaces.

When viewed from the facial aspect, the crown of the

maxillary first premolar can be described as:

(1) roughly five-sided.

(2) similar to the maxillary second premolar.

(3) similar to the permanent maxillary canine.

(4) having all of the above features.

(5) having none of the above features.

4. all of the above

In the permanent dentition, the fifth tooth from the

midline on the right side of the maxillary arch, is:

#4

On the occlusal surface of the maxillary first premolar,

the primary grooves which normally originate in the mesial pit include all of the following, EXCEPT the:

(1) central groove.

(2) MB triangular groove.

(3) mesial marginal groove.

(4) DB triangular groove.

(5) ML triangular groove.

4. DB triangular groove

On the occlusal surface of maxillary premolars, the

lingual boundary of the mesial triangular fossa is the:

(1) mesial marginal ridge.

(2) mesial cusp ridge of the lingual cusp.

(3) buccal cusp ridge of the lingual cusp.

(4) transverse ridge.

(5) distal marginal ridge.

(2) mesial cusp ridge of the lingual cusp.

On the occlusal surface of the maxillary first premolar,

the distal pit normally:

(1) is located in the central fossa.

(2) is located near the midpoint of the central groove.

(3) is the point of union of four primary grooves.

(4) is the point of union of five primary grooves.

(5) does not have a marginal groove originating in it.

(5) does not have a marginal groove originating in it.

On the crown of a maxillary second premolar, the inclined

plane which is located between the mesial cusp ridge of

the lingual cusp and the lingual triangular ridge is:

(1) functional.

(2) the ML inclined plane of the lingual cusp.

(3) both of the above.

(4) neither of the above.

1. fnxal

In a mid root cross section, a root outline which has a

kidney shape, most likely belongs to a maxillary:

(1) second premolar.

(2) first premolar with type I root.

(3) first premolar with type II root.

(4) first premolar with type III root.

(5) canine.

2. first premolar with type I root

The root of the maxillary second premolar is normally:

(1) wider mesiodistally than buccolingually.

(2) bifurcated.

(3) deflected to the mesial in the apical third.

(4) shorter than the root of the first premolar.

(5) ovoid in cross section at the mid root level.

(5) ovoid in cross section at the mid root level.

On the buccal crown surface of the maxillary premolars,

the structure which is located immediately distal to the

mesiobuccal developmental depression is the:

(1) MB line angle.

(2) buccal ridge.

(3) imbrication line.

(4) DB line angle.

(5) DB developmental depression.

(2) buccal ridge.

On the mesial surface of the maxillary first premolar,

the cervical line normally:

(1) is convex toward the apical.

(2) is relatively straight.

(3) has a depth of curvature which is greater than that of anterior teeth.

(4) has a depth of curvature which is the same as that of the distal of the canine.

(5) has a depth of curvature which is equal to that of the distal of the same tooth.

(4) has a depth of curvature which is the same as that of the distal of the canine.

Consider the following facts, and identify the proximal

aspect and maxillary premolar which is being described.

(a) A marginal groove is normally evident.

(b) The lingual cusp is noticeably shorter than the buccal cusp.

The view described is most likely the:

(1) mesial aspect of the maxillary first premolar.

(2) distal aspect of the maxillary first premolar.

(3) mesial aspect of the maxillary second premolar.

(4) distal aspect of the maxillary second premolar.

(1) mesial aspect of the maxillary first premolar.

Facial developmental depressions are a normal finding on

the crowns of:

(1) permanent maxillary incisors.

(2) permanent maxillary canines.

(3) maxillary premolars.

(4) all of the above teeth.

(5) none of the above teeth.

4. all of the above

The maxillary first premolar normally erupts:

(1) prior to the maxillary canine.

(2) prior to the maxillary second premolar.

(3) prior to both the canine and second premolar.

(4) after both the canine and second premolar.

(5) prior to all maxillary anterior teeth.

(3) prior to both the canine and second premolar.

From the buccal aspect, the crown profile of the maxillary

premolars is roughly:

pentagonal

The term for a thin connection between portions or

branches of the root structure of certain teeth is:

Lamination

The maxillary first premolar initiates calcification at:

18-21 months.

The maxillary second premolar normally has its enamel

formation completed at:

6-7 yo

On the occlusal surface of a maxillary first premolar, the

groove which originates in the mesial pit, and terminates

by fading out on the mesial surface, is known as the:

(1) ML triangular groove.

(2) MB triangular groove.

(3) mesial marginal groove.

(4) central groove.

(5) secondary groove

3. mesial marginal groove

On the occlusal surface of the maxillary premolars, the

structure which normally forms the distal boundary of the

mesial triangular fossa is the:

(1) distal marginal ridge.

(2) mesial marginal ridge.

(3) distal cusp ridge of the buccal cusp.

(4) transverse ridge.

(5) mesial cusp ridge of the lingual cusp.

4. transverse ridge

On the occlusal surface of a maxillary first premolar,

the total number of pits normally present is:

2

The root of the maxillary second premolar is normally:

(1) wider mesiodistally than buccolingually.

(2) laminated.

(3) bifurcated.

(4) convex on its buccal surface.

(5) longer than the root of the maxillary canine.

(4) convex on its buccal surface.

On the mesial surface of the maxillary first premolar,

the cervical line is:

(1) evenly convex toward the apical.

(2) irregularly convex toward the apical.

(3) evenly or irregularly convex toward the occlusal.

(4) straight.

(5) less deeply curved than on its distal surface.

(3) evenly or irregularly convex toward the occlusal.

Of the following, the smallest contact area in size

is normally the:

(1) mesial contact of the maxillary first premolar.

(2) distal contact of the maxillary first premolar.

(3) mesial contact of the maxillary second premolar.

(4) distal contact of the maxillary second premolar

1. mesial contact of the max first premolar

When compared to the maxillary first premolar, the buccal

cusp tip of the second premolar normally:

(1) is higher.

(2) is sharper.

(3) is offset in the same direction mesiodistally.

(4) exhibits all of the above features.

(5) exhibits none of the above features.

(5) exhibits none of the above features.

The crown of a premolar which is wider buccolingually

than mesiodistally, and its two cusps are of

approximately equal height, most likely belongs to a:

(1) mandibular first premolar.

(2) mandibular second premolar.

(3) maxillary first premolar.

(4) maxillary second premolar.

(4) maxillary second premolar.

Facial developmental depressions are a normal finding on

the crowns of:

(1) permanent maxillary incisors.

(2) permanent maxillary canines.

(3) maxillary premolars.

(4) all of the above teeth.

(5) none of the above teeth.

4. all

In the mouth of an adult, the fourth tooth from the

midline in the maxillary right quadrant, is tooth:

#5

An anomaly which involves the occlusal surface of a

maxillary premolar features one centrally located pit

and no central groove. The tooth most likely to exhibit

this anomaly is the:

(1) first premolar with a type I root.

(2) first premolar with a type II root.

(3) first premolar with a type III root.

(4) second premolar.

(4) second premolar.

On the crown of a maxillary premolar, the cusp ridge of the

lingual cusp which extends from the cusp tip to the area of

the mesiolinguo-occlusal point angle, is the:

(1) mesial cusp ridge.

(2) distal cusp ridge.

(3) buccal cusp ridge.

(4) lingual cusp ridge.

1. mesial cusp ridge

On the occlusal surface of maxillary first premolars, the

groove which originates and terminates in pits is the:

(1) secondary groove.

(2) MB triangular groove.

(3) mesial marginal groove.

(4) ML developmental groove.

(5) central groove.

5. central groove

The root of the maxillary second premolar is most often:

(1) single.

(2) bifurcated, with mesial and distal root branches.

(3) trifurcated, with two root branches buccally, and

one root branch lingually.

(4) laminated.

(5) bifurcated, with buccal and lingual root branches.

1. single

The crown of the maxillary first premolar normally has:

(1) buccal developmental depressions.

(2) imbrication lines.

(3) a buccal ridge.

(4) all of the above features.

(5) none of the above features.

4. all of the above

On the mesial crown surface of the maxillary first

premolar, the height of contour is normally located:

(1) in the cervical third.

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

(3) in the middle third.

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

(5) in the occlusal third.

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

On the crowns of maxillary premolars, the cusp tip is

normally offset to the distal on:

(1) the buccal cusp of the first premolar.

(2) the lingual cusp of the first premolar.

(3) the buccal cusp of the second premolar.

(4) the lingual cusp of the second premolar.

(5) all of the above cusps.

(1) the buccal cusp of the first premolar.

All of the following structures are normally found on the

crown of a maxillary second premolar, EXCEPT a:

(1) central groove.

(2) buccal ridge.

(3) DL triangular groove.

(4) MB triangular groove.

(5) mesial concavity.

(5) mesial concavity.

Of the following structures, all of which are found on

the crowns of maxillary premolars, those which are NOT

normally found on the crowns of maxillary incisors are:

(1) facial ridges.

(2) fossae.

(3) imbrication lines.

(4) facial developmental depressions.

(5) marginal ridges.

1. facial ridges

Of the following structures, all of which are normally

found on the crowns of maxillary premolars, those which

are NOT normally found on the crowns of permanent

maxillary canines include:

(1) facial ridges.

(2) marginal ridges.

(3) marginal grooves.

(4) imbrication lines.

(5) facial developmental depressions.

3. Marginal grooves

At age 13, the fifth tooth from the midline in the

maxillary left quadrant is universal tooth:

#13

The root of the maxillary first premolar is normally

completely formed at:

12-13 yo

The maxillary second premolar normally initiates

calcification at:

24-27 months

On the crowns of maxillary premolars, the buccal cusp

ridge of the lingual cusp is also known as the:

(1) buccal portion of the transverse ridge.

(2) distal cusp ridge of the buccal cusp.

(3) lingual cusp ridge of the buccal cusp.

(4) buccal triangular ridge.

(5) lingual triangular ridge.

5. lingual triangular ridge

The groove that has its origin in the mesial pit on the

occlusal surface of the maxillary first premolar, but is

most often absent in the second premolar is the:

(1) MB triangular groove.

(2) DB triangular groove.

(3) mesial marginal groove.

(4) ML triangular groove.

(5) central groove.

3. M marginal groove

On the occlusal surface of maxillary premolars, the

structure which forms the distal boundary of the distal

triangular fossa is the:

(1) distal marginal ridge.

(2) mesial marginal ridge.

(3) transverse ridge.

(4) mesial marginal groove.

(5) distal marginal groove.

1. D marginal ridge

On the crown of the maxillary second premolar, the total

number of functional inclined planes is normally:

6

In a mid root cross section, a maxillary second premolar

normally exhibits a root outline which is:

(1) wider mesiodistally than buccolingually.

(2) circular.

(3) convex on its buccal surface.

(4) triangular.

(5) concave on its mesial surface.

3. Convex on its B surface

On the crown of a maxillary premolar, the lateral surface

which exhibits both a mesial concavity and a marginal

groove, is most likely to be the:

(1) mesial surface of the first premolar.

(2) distal surface of the first premolar.

(3) mesial surface of the second premolar.

(4) distal surface of the second premolar.

(5) buccal surface of the second premolar.

1. M surface of the first premolar

On the crown of the maxillary first premolar, the mesial

contact area normally:

(1) is smaller in size than the distal contact area of the same tooth.

(2) is located toward the buccal of the surface.

(3) is circular in shape.

(4) exhibits all of the above features.

(5) exhibits none of the above features.

4. exhibits all of the above

On the crown of the maxillary first premolar, the buccal

cusp tip normally:

(1) is the highest cusp.

(2) is the sharpest cusp.

(3) is offset to the distal.

(4) exhibits all of the above features.

(5) exhibits none of the above features.

4. all of the above

A premolar which exhibits a greater buccolingual than

mesiodistal crown dimension, and of its two cusps, the

lingual cusp length is about a milimeter shorter than the

buccal cusp length is most likely a:

(1) maxillary first premolar.

(2) maxillary second premolar.

(3) mandibular first premolar.

(4) mandibular second premolar

(1) maxillary first premolar.

From the facial aspect, the outline of the distal cusp

ridge is normally longer than the outline of the mesial

cusp ridge, on the crowns of:

(1) permanent maxillary canines after attrition has occurred.

(2) maxillary first premolars.

(3) maxillary second premolars.

(4) all of the above teeth.

(5) none of the above teeth.

(3) maxillary second premolars.

The main masticatory function of the premolars is:

Grinding

The maxillary premolar which has a distal contact with

the permanent maxillary left first molar is tooth:

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