Dental Anatomy: Quiz 9: Unit 9: Review Questions

A root canal, or branch, which is similar to a normal

root canal, but is in excess of the usual number of

canals, is known as:

(1) an anastomosis.

(2) a pulp prolongation.

(3) an accessory canal.

(4) a supplementary canal.

(5) a lateral canal.

4. a supplementary canal

The dental tissue which encloses the pulp cavity, and

also is in direct contact with it, is the:

(1) enamel in the crown of the tooth, and the cementum in the root.

(2) enamel in the crown of the tooth, and dentin in the root.

(3) dentin in the crown of the tooth, and cementum in the root.

(4) enamel in both the crown and root.

(5) dentin in both the crown and root.

5. dentin in both the crown and root

In a permanent tooth, secondary dentin normally:

(1) obliterates the pulp chamber by middle age.

(2) is found only in the pulp canal.

(3) has a different color than primary dentin.

(4) is found only in the pulp horn areas.

(5) is formed only during tooth development.

3. has a different color than primary dentin

Shortly after eruption of a permanent tooth, the apical

portion of the pulp cavity is:

(1) obliterated.

(2) funnel shaped.

(3) cylindrical.

(4) constricted.

(5) necrotic.

2. funnel shaped

From previous knowledge of the general shape of the

proximal crown surfaces of anterior teeth, their pulp

chamber, in a labiolingual section, should be:

(1) rhomboidal in outline.

(2) widest at the incisal.

(3) trapezoidal in outline.

(4) the same width at the incisal as at the cervical.

(5) triangular in outline.

5. triangular in outline

Of the following permanent teeth, those which normally

exhibit a pulp chamber that is wider mesiodistally than

faciolingually, are the:

(1) mandibular incisors.

(2) maxillary incisors.

(3) mandibular canines.

(4) maxillary canines.

(5) maxillary premolars.

2. max incisors

In a cervical cross section, the pulp cavity of a newly

erupted permanent anterior tooth which exhibits a

somewhat triangular shaped outline most likely belongs

to a:

(1) maxillary central incisor.

(2) mandibular incisor.

(3) maxillary canine.

(4) mandibular canine.

(5) maxillary lateral incisor.

1. max central

All of the following pulp horns are normally associated

with the pulp cavity of a permanent mandibular second

molar, EXCEPT the:

(1) MB pulp horn.

(2) ML pulp horn.

(3) DB pulp horn.

(4) DL pulp horn.

(5) distal pulp horn.

5. distal pulp horn

The permanent mandibular posterior tooth which would most often exhibit four root canals is the:

(1) first premolar.

(2) second premolar.

(3) first molar.

(4) second molar.

(5) third molar.

3. first molar

In the fully formed tooth, the constricted portion of the

pulp canal, at the root end, is known as the:

(1) pulp cavity.

(2) foramen.

(3) pulp constriction.

(4) supplementary canal.

(5) pulp chamber.

2. foramen

Of the following, the dental tissue(s) which normally

may be deposited in a tooth after root development is

complete, is(are):

(1) primary dentin only.

(2) secondary dentin only.

(3) both primary and secondary dentin.

(4) enamel only.

(5) enamel and primary dentin.

2. secondary dentin only

During much of the period of a tooth's root development,

the diameter of the root canal is greatest at the:

(1) cervical line level.

(2) cervical third of the root level.

(3) mid root level.

(4) apical level.

(5) junction of the middle and apical thirds of the root.

4. apical level

The pulp chamber of a permanent anterior tooth which is

wider mesiodistally than labiolingually, and two pulp

horns are visible on a routine radiograph of a newly

erupted specimen most likely belongs to a:

(1) maxillary central incisor.

(2) maxillary lateral incisor.

(3) mandibular central or lateral incisor.

(4) maxillary canine.

(5) mandibular canine.

2. max lateral incisor

5) The permanent maxillary second molar normally exhibits

two root canals in:

(1) the lingual root.

(2) the MB root.

(3) the DB root.

(4) all roots.

(5) none of its roots.

5. none of its roots

The aspect from which a vertical section of the pulp

chamber of a permanent mandibular first molar is normally

narrowest, is the:

(1) mesial aspect.

(2) distal aspect.

(3) buccal aspect.

(4) lingual aspect.

2. distal aspect

Of the following permanent teeth, the one which is likely

the poorest candidate for root canal therapy, is the:

(1) maxillary central incisor.

(2) mandibular canine.

(3) maxillary second premolar.

(4) mandibular first molar.

(5) maxillary third molar

5. max third molar

The longest side of the permanent maxillary molar

triangle is located toward the:

(1) mesial.

(2) distal.

(3) buccal.

(4) lingual.

1. mesial

Small lateral branches from the main root canal(s), which

are usually found in the apical half of the root, and

function in auxiliary nutrient supply, are termed:

(1) accessory canals.

(2) supplementary canals.

(3) pulp canals.

(4) anastomoses.

(5) pulp prolongations.

1. accessory canals

The maxillary first premolar normally exhibits two root

canals in:

(1) type I roots only.

(2) type II roots only.

(3) type III roots only.

(4) type I and type II roots only.

(5) type I, type II and type III roots

5. type I, type II, and type III roots

In the permanent maxillary first molar, the root canal

which is normally the largest in diameter, is the:

(1) buccal canal.

(2) lingual canal.

(3) mesiobuccal canal.

(4) distobuccal canal.

(5) mesiolingual canal.

2. lingual canal

In a majority of specimens, the permanent maxillary

second molar exhibits a total of:

(1) 1 root canal.

(2) 2 root canals.

(3) 3 root canals.

(4) 4 root canals.

(5) 5 root canals.

3. 3 root canals

In a buccolingual section through the distal portion of

the pulp cavity of a permanent maxillary first molar,

normally:

(1) 1 root canal is visible.

(2) 3 pulp horns are visible.

(3) the pulp chamber is wider at its occlusal limit than at its floor.

(4) 3 root canals are visible.

(5) the pulp chamber is generally wider than in a mesiodistal section.

5. the pulp chamber is generally wider than in a MD section

In a permanent mandibular second molar, the total number of

pulp horns which are normally visible is:

(1) 0.

(2) 2.

(3) 3.

(4) 4.

(5) 5.

2

In the permanent mandibular first molar, the most common

deviation from normal pulp canal anatomy involves:

(1) only one root canal in the mesial root.

(2) two root canals in the distal root.

(3) two root canals in the lingual root.

(4) two root canals in the MB root.

(5) two root canals in the DB root.

2. two root canals in the D root

Considering previous knowledge of the dimensions of the

crowns of permanent teeth, the premolar which normally

has the widest pulp chamber outline, in a buccolingual

section, is the:

(1) maxillary first premolar.

(2) maxillary second premolar.

(3) mandibular first premolar.

(4) mandibular second premolar.

1. max first premolar

The longest root canal of any permanent tooth is normally

exhibited by the:

(1) maxillary central incisor.

(2) maxillary canine.

(3) maxillary second premolar.

(4) lingual canal of the maxillary first molar.

(5) mandibular canine.

2. max canine

In a mesiodistal section of a permanent maxillary canine,

the pulp cavity normally:

(1) exhibits two pulp horns.

(2) is generally wider than in a labiolingual section.

(3) is widest at its incisal limit.

(4) is pointed at its incisal limit.

(5) is widest at the mid root level.

4. is pointed at its incisal limit

In a cervical cross section of the pulp cavity, the

mandibular first premolar normally exhibits:

(1) two root canal orifices, with the lingual being larger than the buccal.

(2) two root canal orifices, both of which are circular in outline.

(3) one root canal, which is circular in outline.

(4) one root canal, which is ovoid in outline and wider MD than BL.

(5) one root canal, which is ovoid in outline and wider BL than MD.

5. one root canal, which is ovoid in outline and wider BL than MD

In a mid root cross section of a permanent maxillary

first molar, the root canal that normally has an outline

which is ovoid, and is wider mesiodistally than

faciolingually, is the:

(1) mesial root canal.

(2) MB root canal.

(3) lingual root canal.

(4) distal root canal.

(5) DB root canal.

3. lingual root canal

It is MOST difficult to differentiate the pulp cavities

of any of the four premolars from one another in:

(1) a faciolingual section.

(2) a mesiodistal section.

(3) a cervical line cross section.

(4) a mid root cross section.

(5) an apical third of the root cross section.

2. a MD section

In mesiodistal sections of the pulp cavity, there are

most often no pulp horns evident in permanent:

(1) maxillary central incisors.

(2) maxillary lateral incisors.

(3) mandibular incisors.

(4) maxillary first molars.

(5) mandibular second molars.

3. Mand incisors

In a mid root cross section, a pulp outline which is

round, most likely belongs to a permanent mandibular:

(1) central incisor.

(2) lateral incisor.

(3) canine.

(4) first premolar.

(5) second premolar

4. first premolar

In a labiolingual section of a permanent mandibular

incisor, the pulp cavity normally:

(1) is widest at the level of the cingulum.

(2) exhibits three pulp horns.

(3) is generally narrower than in a mesiodistal cross section.

(4) exhibits two pulp horns.

(5) is widest at its incisal limit.

1. is widest at the level of the cingulum

In a mid root cross section, the ROOT of a permanent

first molar which is normally the largest, is the:

(1) DB root of the maxillary first molar.

(2) MB root of the maxillary first molar.

(3) lingual root of the maxillary first molar.

(4) mesial root of the mandibular first molar.

(5) distal root of the mandibular first molar.

4. M root of the mand first molar

The pulp cavity of a permanent maxillary second molar

normally exhibits:

(1) 3 pulp horns.

(2) 3 pulp canals.

(3) 4 orifices.

(4) 4 root canals.

(5) 4 pulp chambers.

2. 3 pulp canals

In a cervical cross section, a newly erupted permanent

incisor with a round pulpal outline is most likely a:

(1) maxillary central.

(2) maxillary lateral.

(3) mandibular central.

(4) mandibular lateral.

2. max lateral

A permanent anterior tooth that has a pulp chamber which

is wider labiolingually than mesiodistally, and in a MD

section, the incisal limit has no pulp horns, but is

nevertheless normally pointed, is most likely a:

(1) maxillary central incisor.

(2) maxillary lateral incisor.

(3) mandibular central incisor.

(4) mandibular lateral incisor.

(5) maxillary canine.

5. max canine

In a cervical cross section, a pulp cavity which exhibits

an hourglass shaped outline most likely belongs to a:

(1) maxillary first premolar.

(2) maxillary second premolar.

(3) mandibular first premolar.

(4) Y type mandibular second premolar.

(5) U or H type mandibular second premolar.

1. max first premolar

In a labiolingual section of a permanent mandibular

incisor, the widest dimension of the pulp cavity is

normally at the:

(1) incisal limit level.

(2) mid crown level.

(3) mid root level.

(4) apical third level.

(5) mid cingulum level.

5. mid cingulum level

The pulp cavity of the maxillary second premolar

normally exhibits:

(1) two root canals, which are buccally and lingually located.

(2) dimensions which are wider mesiodistally than buccolingually.

(3) two pulp horns in a mesiodistal cross section.

(4) two root canals, which are mesially and distally located.

(5) a single root canal, which is ovoid in cross sectional outline at the mid root level.

5. a single root canal, which is ovoid in cross sectional outline at the mid root level

In a mid root cross section, the permanent molar root

canal which is normally ovoid, and wider mesiodistally

than buccolingually, is the:

(1) MB canal of the maxillary molars.

(2) lingual canal of the maxillary molars.

(3) MB canal of the mandibular molars.

(4) ML canal of the mandibular molars.

(5) distal canal of the mandibular molars.

2. lingual canal of the max molars

A permanent molar that normally exhibits a pulp chamber

which is wider buccolingually than mesiodistally, and

also exhibits four root canals, is most likely the:

(1) maxillary first molar.

(2) maxillary second molar.

(3) mandibular first molar.

(4) mandibular second molar.

(5) mandibular third molar.

1. max first molar

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

two root canal outlines, most likely belongs to a:

(1) maxillary first premolar.

(2) maxillary second premolar.

(3) mandibular first premolar.

(4) mandibular second premolar.

1. max first premolar

In permanent maxillary canines, the pulp chamber is wider

at the mid cingulum level than at any other level, in:

(1) mesiodistal sections.

(2) labiolingual sections.

(3) both mesiodistal and labiolingual sections.

(4) neither mesiodistal nor labiolingual sections.

2. labiolingual sections

In cross section at the mid root level, a permanent

maxillary first molar exhibits two root canals in the

majority of cases, in the:

(1) lingual root.

(2) MB root.

(3) mesial root.

(4) distal root.

(5) DB root.

2. MB root

n a mid root cross section, the ROOT of a permanent

first molar which is normally the largest, is the:

(1) DB root of the maxillary first molar.

(2) MB root of the maxillary first molar.

(3) lingual root of the maxillary first molar.

(4) mesial root of the mandibular first molar.

(5) distal root of the mandibular first molar.

4. M root of the mand first molar

When compared to the faciolingual dimension, the pulp

chamber is wider in the mesiodistal dimension in:

(1) permanent maxillary canines.

(2) permanent mandibular incisors.

(3) permanent mandibular canines.

(4) all of the above permanent anteriors.

(5) none of the above permanent anteriors.

5. none of the above

Of the following permanent posterior teeth, the one which

is most likely to exhibit three root canal outlines in a

mid root cross section, is the:

(1) maxillary first molar.

(2) maxillary second molar.

(3) maxillary first premolar.

(4) mandibular first premolar.

(5) mandibular second premolar.

2. max second molar

Of the following permanent posterior teeth, those which

normally exhibit a total of two orifices, are:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) maxillary first molars.

(4) mandibular first premolars.

(5) mandibular first molars.

1. max first premolars

In a labiolingual section, the pulp cavity of a permanent

maxillary incisor normally is widest at the:

(1) level of the incisal limit of the pulp chamber.

(2) mid cingulum level.

(3) junction of the middle and apical thirds of the root level.

(4) mid root level.

(5) apical third of the root level.

2. mid cingulum level

In some teeth, there are extra root canals which can be

difficult to diagnose for endodontic therapy when they

are superimposed on the main root canal(s) on the x-ray.

They are termed:

(1) anastomoses.

(2) lateral canals.

(3) accessory canals.

(4) supplementary canals.

(5) foramen branches.

4. supplementary canals

The correct term for the entity which is found within

(internally) the pulp cavity of a tooth, is the:

(1) soft pulp.

(2) pulp chamber.

(3) anastomosis.

(4) secondary dentin.

(5) pulp tissue.

5. pulp tissue

In a permanent tooth, secondary dentin may:

(1) increase the size of the pulp chamber.

(2) be the result of internal resorption.

(3) reduce the size of the pulp cavity.

(4) create accessory root canals.

(5) increase the size of the pulp canals

3. reduce the size of the pulp cavity

The outline of the pulp cavity generally corresponds to

the external shape of:

(1) the crown of the tooth.

(2) the root(s) of the tooth.

(3) both of the above shapes.

(4) neither of the above shapes.

3. both of the above shapes

If one views all four lateral sections of the pulp cavity

of a permanent mandibular first molar, the aspect from

which only one root canal is normally visible, is the:

(1) mesial aspect.

(2) distal aspect.

(3) buccal aspect.

(4) lingual aspect.

2. D aspect

On occasion, the permanent mandibular canine exhibits two

root canals which are correctly named the:

(1) mesiolabial and mesiolingual root canals.

(2) labial and lingual root canals.

(3) distolabial and distolingual root canals.

(4) mesial and distal root canals.

(5) mesiolabial and distolingual root canals.

2. labial and lingual root canals

The entire internal space of a tooth, which contains the

pulp tissue, is termed the:

(1) pulp horn.

(2) pulp canal.

(3) pulp cavity.

(4) pulp chamber.

(5) pulp orifice.

3. pulp cavity

As aging occurs in human teeth, a reduction in size is

normally noted in:

(1) the pulp horns.

(2) the pulp chamber.

(3) the pulp canal(s).

(4) all of the above structures.

(5) none of the above structures.

4. all of the above

The floor of the pulp chamber of a permanent mandibular

first molar normally exhibits:

(1) 1 orifice.

(2) 2 orifices.

(3) 3 orifices.

(4) 4 orifices.

(5) 5 orifices.

3. 3 orifices

The total number of pulp chambers normally found in the

permanent maxillary first molar is:

(1) 1.

(2) 2.

(3) 3.

(4) 4.

(5) 5.

1

Of the following possibilities for pulp canal morphology

of permanent mandibular anterior teeth, the LEAST

commonly observed anatomy is:

(1) one root canal.

(2) one root canal which branches into two canals that reunite in the apical third of the root.

(3) one root canal which branches into two canals that exit via separate foramina.

(4) two fully formed root canals.

4. two fully formed root canals

The prolongations in the pulp cavity of a tooth, which

often correspond to the cusps, or lobes, are termed:

(1) pulp stones.

(2) pulp horns.

(3) accessory canals.

(4) secondary pulp cavities.

(5) mamelons.

2. pulp horns

The dental tissue, which is in direct contact with, and

entirely surrounds the pulp chamber of a tooth, is the:

(1) cementum.

(2) enamel.

(3) dentin.

(4) periodontal ligament.

(5) enamel cuticle.

3. dentin

The major nutritional supply to the pulp tissue enters

the tooth through the:

(1) DEJ.

(2) periodontal ligament.

(3) pulp horns.

(4) foramen.

(5) CEJ.

4. foramen

If the lingual pulp horn of the mandibular first premolar

is missing, as is sometimes the case, the pulp chamber's

appearance in a faciolingual section, is most similar to

that of a permanent mandibular:

(1) incisor.

(2) canine.

(3) Y type second premolar.

(4) U type second premolar.

(5) H type second premolar.

2. canine

Because of its larger size, the root canal of a permanent

maxillary first molar which is most likely to be the

easiest to instrument during endodontic therapy is the:

(1) MB root canal.

(2) mesial root canal.

(3) DB root canal.

(4) distal root canal.

(5) lingual root canal.

5. lingual root canal

In a permanent mandibular first molar, the root which

normally has two root canals is the:

(1) mesial root.

(2) MB root.

(3) distal root.

(4) DB root.

(5) lingual root.

1. M root

The pulp cavity of a permanent maxillary first molar

normally exhibits:

(1) 2 pulp horns and 2 pulp canals.

(2) 2 pulp horns and 3 pulp canals.

(3) 3 pulp horns and 3 pulp canals.

(4) 4 pulp horns and 3 pulp canals.

(5) 4 pulp horns and 4 pulp canals.

5. 4 pulp horns and 4 pulp canals

In a mesiodistal section through the buccal portion of

the pulp cavity of the permanent maxillary first molar,

the pulp chamber:

(1) is widest near its occlusal limit.

(2) is wider than in a buccolingual section.

(3) has three pulp horns which are visible.

(4) exhibits all of the above features.

(5) exhibits none of the above features.

1. is widest near its occlusal limit

In a mid root cross section, the permanent molar which

normally exhibits four root canal outlines, is the:

(1) maxillary first molar.

(2) maxillary second molar.

(3) mandibular first molar.

(4) mandibular second molar.

(5) mandibular third molar.

1. max first molar

Of the following permanent anterior teeth, the one which

normally exhibits a pulp cavity outline which is round in

a cervical line cross section, is the:

(1) mandibular central incisor.

(2) maxillary lateral incisor.

(3) mandibular lateral incisor.

(4) maxillary canine.

(5) mandibular canine.

2. max lateral incisor

The permanent anterior tooth whose pulp chamber has the

greatest labiolingual dimension is the:

(1) maxillary canine.

(2) mandibular central incisor.

(3) maxillary lateral incisor.

(4) mandibular canine.

(5) maxillary central incisor.

1. max canine

Of the following permanent posterior teeth, those which

normally exhibit a total of two orifices, are:

(1) maxillary first premolars.

(2) maxillary second premolars.

(3) maxillary first molars.

(4) mandibular first premolars.

(5) mandibular first molars.

1. max first premolars

In a mid root cross section, the mandibular second

premolar most often has a pulp canal outline which is:

(1) ovoid, and wider BL than MD.

(2) the same as that of a mandibular first premolar.

(3) ovoid, and wider MD than BL.

(4) the same as that of a maxillary first premolar.

(5) round.

1. ovoid, and wider BL than MD

At the point in time when the root of a tooth is considered to be fully developed, the:

(1) production of secondary dentin ceases.

(2) apical portion of the pulp canal is funnel shaped.

(3) apical foramen is obliterated by primary dentin.

(4) production of primary dentin ceases.

(5) formation of enamel in the tooth's crown will continue for approximately two more years.

4. production of primary dentin ceases

If it was possible to have only one section of a tooth, but the dentist could have any section which he desired, the one section which would most likely reveal how many root canals (including supplementary canals) a tooth possessed, would be the:

(1) mesiodistal section.

(2) labiolingual section.

(3) cervical line cross section.

(4) mid root cross section.

(5) mid crown horizontal section.

4. mid root cross section

When compared to the faciolingual dimension, the pulp chamber is wider in the mesiodistal dimension in:

(1) permanent maxillary canines.

(2) permanent mandibular incisors.

(3) permanent mandibular canines.

(4) all of the above permanent anteriors.

(5) none of the above permanent anteriors.

5. none of the above permanent anteriors

In a mid root cross section, the permanent molar which normally exhibits four root canal outlines, is the:

(1) maxillary first molar.

(2) maxillary second molar.

(3) mandibular first molar.

(4) mandibular second molar.

(5) mandibular third molar.

1. max first molar

In a cervical cross section, the pulp cavity of a newly erupted permanent anterior tooth which exhibits a somewhat triangular shaped outline most likely belongs to a:

(1) maxillary central incisor.

(2) mandibular incisor.

(3) maxillary canine.

(4) mandibular canine.

(5) maxillary lateral incisor.

1. max central

A permanent anterior tooth that has a pulp chamber which is wider labiolingually than mesiodistally, and in a MD section, the incisal limit has no pulp horns, but is nevertheless normally pointed, is most likely a:

(1) maxillary central incisor.

(2) maxillary lateral incisor.

(3) mandibular central incisor.

(4) mandibular lateral incisor.

(5) maxillary canine.

5. max canine

In a faciolingual section of the pulp chamber, two pulp

horns are normally visible in specimens of permanent:

(1) maxillary incisors.

(2) maxillary canines.

(3) mandibular canines.

(4) mandibular incisors.

(5) maxillary premolars

5. max premolars

In a labiolingual section of a permanent mandibular incisor, the widest dimension of the pulp cavity is normally at the:

(1) incisal limit level.

(2) mid crown level.

(3) mid root level.

(4) apical third level.

(5) mid cingulum level.

5. mid cingulum level

A mandibular second premolar normally exhibits two:

(1) pulp chambers.

(2) pulp horns.

(3) orifices.

(4) root canals.

(5) of none of the above structures.

2. pulp horns

In a mesiodistal section, the pulp cavity of a maxillary

first premolar normally exhibits:

(1) two pulp horns.

(2) an outline very similar to that of a permanent maxillary canine.

(3) two root canals.

(4) all of the above features.

(5) none of the above features.

2. an outline very similar to that of a permanent max canine

In a mid root cross section of a permanent mandibular

first molar, the root canal outline which is normally

ovoid, is that of the:

(1) lingual root canal.

(2) mesial root canal.

(3) MB root canal.

(4) distal root canal.

(5) ML root canal.

4. distal root canal

The pulp cavity of a permanent maxillary first molar

normally exhibits a total of:

(1) 2 pulp horns.

(2) 1 root canal.

(3) 3 pulp horns.

(4) 2 root canals.

(5) 4 pulp horns.

5. 4 pulp horns

The aspect of a permanent maxillary molar, from which a

vertical section of the pulp cavity normally reveals only one root canal, is the:

(1) mesial aspect.

(2) distal aspect.

(3) buccal aspect.

(4) lingual aspect.

4. lingual aspect

About 10-30% of the permanent mandibular incisor

specimens exhibit:

(1) one root.

(2) one root canal.

(3) two roots.

(4) two root canals.

(5) three root canals.

4. two root canals

In a mesiodistal section, the pulp chamber shows its

greatest width at its incisal limit, in:

(1) permanent maxillary canines.

(2) permanent mandibular canines.

(3) permanent maxillary incisors.

(4) all of the above teeth.

(5) none of the above teeth.

3. permanent max incisors

In a faciolingual section of a maxillary first premolar,

the pulp cavity normally:

(1) exhibits two pulp horns.

(2) has an outline which is very similar to that of a permanent maxillary canine.

(3) is generally narrower than it is in a mesiodistal section.

(4) exhibits one pulp horn.

(5) exhibits one root canal

1. exhibits two pulp horns

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

maxillary first molar, which is ovoid, wider

faciolingually than mesiodistally, and normally exhibits

only one root canal, is the:

(1) lingual root.

(2) DB root.

(3) mesial root.

(4) MB root.

2. DB root

Routine periapical radiographs of posterior teeth show

pulp anatomy best as it is seen from the:

(1) mesial aspect.

(2) distal aspect.

(3) buccal aspect.

(4) lingual aspect.

(5) occlusal aspect.

3. B aspect

The pulp chamber of a permanent anterior tooth which is

wider labiolingually than mesiodistally, and in a routine

x-ray is flat at its incisal limit, most likely belongs

to a permanent:

(1) maxillary central incisor.

(2) maxillary lateral incisor.

(3) mandibular canine.

(4) maxillary canine.

(5) mandibular incisor.

5. mand incisor

In a cervical cross section, the pulp cavity of a newly

erupted permanent anterior tooth which exhibits a

somewhat triangular shaped outline most likely belongs

to a:

(1) maxillary central incisor.

(2) mandibular incisor.

(3) maxillary canine.

(4) mandibular canine.

(5) maxillary lateral incisor

1. max central incisor

In a faciolingual section of the pulp cavity, two pulp

horns are normally visible in:

(1) permanent maxillary central incisors.

(2) permanent maxillary lateral incisors.

(3) permanent maxillary canines.

(4) maxillary premolars.

(5) all of the above maxillary teeth.

4. max premolars

If, when removing deep decay in the occlusal surface of a

posterior tooth an exposure of the pulp tissue occurs, it

is most likely the dentist has exposed:

(1) the pulp chamber.

(2) the foramen.

(3) a pulp canal.

(4) an anastomosis.

(5) a pulp horn.

5. a pulp horn

Secondary dentin formation is:

(1) a function of the ameloblasts.

(2) a function of the pulp.

(3) found only in deciduous teeth.

(4) found only in permanent teeth.

(5) thought to occur only in the mixed dentition stage.

2. a function of the pulp

Primary and secondary dentin:

(1) exhibit the same color.

(2) may both be formed in response to an irritant in a fully formed tooth.

(3) are histologically the same.

(4) are both formed by the ameloblasts.

(5) are formed at different stages in a tooth's life.

5. are formed at different stages in a tooth's life

Of the following permanent molars, those which normally

exhibit a total of three root canals include:

(1) maxillary second molars.

(2) mandibular first molars.

(3) mandibular second molars.

(4) all of the above molars.

(5) none of the above molars.

4. all of the above molars

In a mid root cross section, a pulp outline which is

round, most likely belongs to a permanent mandibular:

(1) central incisor.

(2) lateral incisor.

(3) canine.

(4) first premolar.

(5) second premolar.

4. first premolar