Dental Anatomy Quiz 1

*When viewing a patient's mouth from the front, the teeth which are to the viewer's left in the movable jaw member are located in the quadrant.

Mandibular right quadrant

*An animal with a total of two dentitions can be described as:

Diphyodont

In the FDI numbering system, the permanent mandibular left first premolar is correctly identified by the number:

34

The universal number for the succedaneous tooth which replaces #11d is:

20

*On the crowns of posterior teeth, the function of mastication is mainly carried on by the:

Occlusal surface

Of the following surfaces, those which are normally found on both anterior and posterior maxillary teeth include:
a. Mesial
b. Palatal
c. Facial
d. All of the above
e. None of the above

d. All of the above

*Of the following groups, the one in which all the teeth are succedaneous is:

1. Deciduous anteriors
2. Deciduous posteriors
3. Permanent anteriors
4. Permanent posteriors
5. None of the above

3. Permanent Anteriors

*In the dentition periods of man, normally:

1. The permanent dentition period occurs over the longest length of time
2. There are five distinct periods
3. Deciduous teeth are present during all periods
4. All the periods are equal in duration
5. Permanent teeth are present during all periods

1. The permanent dentition period occurs over the longest length of time

*In the normal order of eruption for the deciduous mandibular teeth, the:

1. Lateral incisor erupts before the central incisor
2. Canine erupts before the lateral incisor
3. Second molar erupts before the first molar
4. First molar erupts before the canine
5. First molar erupts before the central incisor

4. First molar erupts before the canine

In the normal order of eruption for the permanent dentition, the:

1. Maxillary teeth precede the mandibular teeth
2. Lateral incisors precede central incisors
3. First molars precede first premolars
4. Second molars precede the second premolars
5. Canines precede the incisors

3. First molars precede the first premolars

The following dental formula shows that the total number of anterior teeth in this dentition is:
I 1/1: C1/1: P 2/2: M4/4

8

*When present on the crowns of teeth, a cingulum is found:

On the lingual surface of incisors and canines

*On the crowns of teeth, transverse ridges are:

The combination of two triangular ridges

*The anatomical root of the tooth is normally composed of:

Cementum and dentin

The dental tissue known as the periodontal ligament is normally the attachment between:

Cementum and bone

In each quadrant of the permanent dentition, the sixth tooth from the midline is also known as:

A six-year molar

The total number of canines in the primary dentition is the same as the total number of:

1. Permanent molars in a quadrant
2. Deciduous premolars in an arch
3. Deciduous anterior teeth in a quadrant
4. Incisors in the permanent dentition
5. Deciduous molars in an arch

5. Deciduous molars in an arch

*The number of anterior teeth which are normally found in one arch of the deciduous dentition is:

6

*When compared to a quadrant of the permanent dentition, a quadrant of the deciduous dentition normally has:

1. Fewer premolars
2. Fewer incisors
3. Fewer anterior teeth
4. More molars
5. More anterior teeth

1. Fewer premolars

*In each quadrant of the permanent dentition, the third tooth from the midline normally:

1. is a premolar
2. is a primary toth
3. has a masticatory function of grinding
4. has a masticatory function of biting and incising
5. is a succedaneous tooth

5. is a succedaneous tooth

*On the crown of a tooth, a small depression which is often the point of union of two or more developmental grooves, describes:

A pit

*A tooth in the mouth has considerable recession of the gingiva toward the apex. Which structures would normally be visible in this situation?

Cervical line and anatomical crown only

*Of the following ridges, those which are found on every tooth in the mouth are:

Marginal ridges

*Mamelons are normally found:

On the incisal ridge of anterior teeth

*The dental formula does not directly describe the total number of teeth in a particular dentition, since only the figures are presented for:

One side (right or left) of the mouth

*The first posterior succedaneous tooth to erupt is normally the permanent:

Mandibular first premolar

An alternative name for premolar is:

Bicuspid

*The total number of premolars which are normally present in the permanent dentition is:

8

The "twelve year" molar is also:

A second molar

*In each quadrant of the deciduous dentition, the fourth tooth from the midline normally:

1. is a succedaneous tooth
2. is a lateral incisor
3. functions in mastication by tearing and holding
4. is a second molar
5. is a posterior tooth

5. is a posterior tooth

the dental tissue known as the periodontal ligament is normally the attachment between:

cementum and bone

The cervical line of a tooth:

1. is also called the dentino-enamel junction
2. always separates the anatomical crown and root
3. is found at a constantly changing level on the root
4. is found at a constantly changing level on the crown
5. always separates the clinical crown and root

2. always separates the anatomical crown and root

Oblique ridges are dental structures which are normally found on the :

crowns of maxillary molars only

On the crowns of teeth, contact areas are located on:

1. Proximal surfaces
2. Palatal surfaces
3. Facial surfaces
4. Lingual surfaces
5. Buccal surfaces

1. Proximal surfaces

The following dental formula shows that the total number of premolars found in the dentition of this animal is:

I: 6/6: P 1/1: M3/3

4

The first posterior succedaneous tooth to erupt is normally the permanent:

Mandibular first premolar

*In the deciduous dentition, the tooth which normally erupts immediately after the maxillary lateral incisor is the deciduous:

Mandibular first molar

Of the following groups, the one in which ALL the teeth are succedaneous is:

1. Deciduous anteriors
2. Deciduous posteriors
3. Permanent anteriors
4. Permanent posteriors
5. None of the above

Permanent anteriors

On tooth #9, the crown surface which is toward the vertical midline, is the:

Mesial surface

Place the following terms in their correct order of occurrence for any deciduous tooth:
Eruption, exfoliation, resorption

Eruption, resorption, exfoliation

*"Wisdom" teeth are also:

Third molars

*In each quadrant of the permanent dentition, the fourth tooth from the midline normally:

1. Has a masticatory function which is similar to that of the second tooth from the midline
2. exhibits a cingulum
3. is a first molar
4. is a succedaneous tooth
5. is a second premolar

4. is a succedaneous tooth

The dental tissue known as the periodontal ligament is normally the attachment between:

cementum and bone

The anatomical root of the tooth is normally composed of:

Cementum and dentin

In the permanent dentition, the initial premolar to erupt is normally the:

Mandibular first

In a normal eruption pattern for the deciduous teeth, the:

1. mandibular central incisor erupts before the maxillary central incisor
2. maxillary canine erupts before the maxillary first molar
3. mandibular canine erupts before the mandibular first molar
4. Maxillary canine erupts before the mandibular canine
5. maxillary lateral incisor erupts before the mandibular central incisor

1. mandibular central incisor erupts before the maxillary central incisor

*The human mixed dentition period normally ends:

1. at about age six
2. with the eruption of the permanent mandibular first molar
3. with the exfoliation of the last deciduous tooth
4. with the eruption of the deciduous mandibular second molar
5. with the exfoliation of the deciduous mandibular central incisor

3. with the exfoliation of the last deciduous tooth

*Permanent teeth which normally are NOT succedaneous are:

molars

The crown surface on tooth #18 which lies against the cheek is the _ surface.

Buccal

On the buccal surface of the crown of tooth #19, the horizontal third closest to the roots is the:

Cervical third

Of the following crown surfaces, the one which could correctly be termed a palatal surface is the:

1. lingual surface of #15
2. facial surface of #2
3. lingual surface of #18
4. labial surface of #8
5. lingual surface of #26

1. lingual surface of #15

*The label "mesio-occlusal" is appropriate for a:

1. line angle of an anterior tooth
2. line angle of a posterior tooth
3. point angle of a posterior tooth
4. point angle of an anterior tooth

2. line angle of a posterior tooth

In a full complement of permanent teeth, the universal number for the tooth in the mandibular left quadrant which has only one contact area is:

17

There term for the process of biting or chewing food is:

Mastication

When compared to a quadrant of the permanent dentition, a quadrant of the deciduous dentition normally has:

1. the same number of premolars
2. fewer anterior teeth
3. the same number of molars
4. fewer posterior teeth
5. more anterior teeth

4. fewer posterior teeth

*In each quadrant of the deciduous dentition, the fourth tooth from the midline is the:

first molar

The portion of the pulp cavity which is located in the anatomical root of an anterior tooth is:

known as the pulp canal

*Of the following dental structures, those which are found ONLY on the crowns of anterior teeth are:

1. transverse ridges
2. marginal ridges
3. cingula
4. cusps
5. inclined planes

Cingula

Of the following, the correct normal order of eruption for the maxillary arch of man's deciduous dentition is:

1. central, lateral, canine, first molar, second molar
2. central, lateral, first molar, canine, second molar
3. lateral, central, canine, first molar, second molar
4. lateral, central, first molar, canine, second molar
5. first molar, central, lateral, canine, second molar

2. central, lateral, first molar, canine, second mlar

Of the following, the tooth which is succedaneous is:

1. #15
2. the deciduous maxillary first molar
3. #8
4. the permanent mandibular first molar
5. #3

3. #8

On the anterior teeth, the crown surface which is normally
toward the lips, is correctly named the:

Labial surface

The crown surface of posterior teeth which corresponds to the incisal edge of anterior teeth is the:

Occlusal

The total number of line angles which are present on the crown of a permanent molar is:

8

*The permanent mandibular second premolars are universal:

1. 20 and 29
2. 20 and 28
3. 19 and 28
4. 21 and 28
5. 21 and 29

1. 20 and 29

In the FDI numbering system, the deciduous maxillary right canine is identified by the number:

53

*The number of molars which are normally found in one arch of the permanent dentition is:

6

In the permanent dentition, the second tooth from the
midline in each quadrant normally exhibits:

1. a mesial contact area, but no distal contact area
2. a function in mastication which is mainly tearing and holding
3. a deciduous predecessor
4. an occlusal surface
5. only one cusp

3. a deciduous predecessor

In each quadrant of the deciduous dentition, the fifth
tooth from the midline normally:

1. is a succedaneous tooth
2. is a second premolar
3. has the same name as the sixth tooth from the midline in the permanent dentition
4. is an anterior tooth
5. has the same name as the seventh tooth from the midline in the permanent dentition

5. has the same name as the seventh tooth from the midline in the permanent dentition

*The dental tissue which composes the majority of the total structure of a normal tooth is the:

dentin

*The anatomical root of the tooth is normally composed of:

Cementum and dentin

From the following dental formula, it can be determined
that the total number of teeth found in this animal's
maxillary arch is:
I 1/1: C1/1: P2/2: M 3/3

14

*The last permanent anterior tooth to erupt is normally the:

Maxillary canine

In the normal order of eruption for the deciduous
mandibular teeth, the:

1. lateral incisor erupts before the central incisor
2. canine erupts before the lateral incisor
3. second molar erupts before the first molar
4. first molar erupts before the canine
5. first molar erupts before the central incisor

4. first molar erupts before the canine

Of the following teeth, the one which is succedaneous is:

(1) # 14.
(2) # 8d.
(3) # 5.
(4) # 30.
(5) # 2d.

(3) #5

On the anterior teeth, the crown surface which is normally
toward the lips, is correctly named the:

Labial surface

The horizontal third of a tooth root which is in closest proximity to the crown is correctly termed the:

Cervical third

The permanent maxillary central incisors share a proximal contact area with each other on their _ surfaces.

Mesial

The permanent mandibular right first premolar is
given universal:

28

In the FDI numbering system, the permanent mandibular left
first premolar is correctly identified by the number:

34

The dentitions of man can be correctly classified as:

heterodont

The number of molars which are normally found in one arch of the permanent dentition is:

6

*The total number of premolars in one arch of the permanent
dentition is normally the same as the total number of:
(1) deciduous premolars in one arch.
(2) permanent molars in one quadrant.
(3) molars in the deciduous dentition.
(4) permanent anterior teeth in one quadrant.
(5) canines in the deciduous dentition.

5. canines in the deciduous dentition

In each quadrant of the deciduous dentition, the fourth
tooth from the midline normally:
(1) is a succedaneous tooth.
(2) is a lateral incisor.
(3) functions in mastication by tearing and holding.
(4) is a second molar.
(5) is a posterior tooth.

5. is a posterior tooth.

The anatomical crown of a tooth is normally composed of:

Enamel and dentin

*A method of classifying the various teeth in a dentition
as to type, and number (amount) of each type, is the:

Dental formula

*The first succedaneous tooth to erupt is normally the:

permanent mandibular central incisor.

In the deciduous dentition, the last anterior tooth to erupt is normally the:

maxillary canine.

The human permanent dentition period normally begins:
(1) at about age 15.
(2) with the eruption of the permanent mandibular third molars.
(3) at about age six.
(4) with the eruption of the permanent mandibular first molars.
(5) with the exfoliation of the deciduous maxillary second molars.

5. with the exfoliation of the deciduous maxillary second molars.

Of the following teeth, the one which is succedaneous is:

1. 14
2. 8d
3. 5
4. 30
5. 2d

3. 5

Of the following surfaces, those which are normally found
on both anterior and posterior maxillary teeth include:
(1) mesial surfaces.
(2) palatal surfaces.
(3) facial surfaces.
(4) all of the above surfaces.
(5) none of the above surfaces.

4. all of the above surfaces.

*On a posterior tooth viewed from the mesial aspect, the
three thirds of the crown's mesial surface, when it is
divided by vertical lines, are correctly named:

Buccal, middle, and lingual

Of the following, the crown surfaces which is NOT found on a permanent mandibular incisor is the:

1. palatal surface
2. mesial surface
3. labial surface
4. distal surface
5. lingual surface

1. palatal surface

*The label "distolabioincisal" is appropriate for a __ angel of a (posterior/ anterior) tooth:

point angle of an anterior tooth

Of the following the posterior tooth is:

1. 8d
2. 18
3. 13d
4. 8
5. 18d

2. 18

If it is known that a certain animal has only one mixed
dentition period during its life, this is enough
information to classify that animal as:

Diphyodont

An alternative name for premolar is

Bicuspid

The number of posterior teeth which are normally found in one arch of the deciduous dentition is:

4

*When compared to the permanent dentition, the deciduous dentition normally exhibits:
(1) fewer molars.
(2) fewer incisors.
(3) fewer canines.
(4) more incisors.
(5) more total teeth.

1. fewer molars

In each quadrant of the permanent dentition, the third
tooth from the midline normally:
(1) is a premolar.
(2) is a primary tooth.
(3) has a masticatory function of grinding.
(4) has a masticatory function of biting and incising.
(5) is a succedaneous tooth.

5. is a succedaneous tooth.

*On the crown of a tooth, the specific anatomical location
where developmental grooves normally cross each other,
unite, or terminate is known as a:

Pit