Lecture 3 Tooth Identification And maxillary lateral incisor

Question 1

Which tooth identification system uses quadrants numbered 1-4 for permanent teeth and 5-8 for primary teeth?

a) French System
b) Arithmetic System
c) International System (FDI)
d) American System

Answer 1

c) international system FDI

Question 2

In the French System, what letters are used to represent the right and left quadrants in both upper and lower dentitions?

a) A and B
b) M and D, m and d
c) R and L, r and l
d) 1 and 2

Answer 2

c) R and L, r and l

Question 3

In the American System, how are permanent teeth identified?

a) Using Arabic numbers 1-32
b) Using Roman numerals I-V
c) Using letters A-T
d) Using quadrant and tooth numbers

Answer 3

a) using Arabic numbers 1-32

Question 4

Which of the following best describes the mesial outline of the maxillary lateral incisor (labial view)?

a) Shorter and more convex
b) Longer and flatter
c) Oblique upward
d) Angled toward the root

Answer 4

b) longer and flatter

Question 5

The distal outline of the maxillary lateral incisor is described as:

a) Longer and flatter
b) Straight and oblique
c) Shorter and more convex
d) Triangular and concave

Answer 5

c) shorter and more convex

Question 6

In the proximal view, what is the shape of the maxillary lateral incisor crown?

a) Rectangular
b) Oval
c) Triangular
d) Square

Answer 6

c) Triangular

Question 7

What is the significance of the cervical line on the maxillary lateral incisor?

a) It is the point where the root divides into multiple canals.
b) It curves toward the root apex and forms a V-shape.
c) It marks the transition from enamel to dentin.
d) It outlines the tooth’s occlusal surface.

Answer 7

b) it curves towards the root apex and forms a V-shape

Question 8

Which feature of the maxillary lateral incisor can sometimes show a foramen caecum?

a) Mesial outline
b) Cervical line
c) Cingulum
d) Incisal edge

Answer 8

c) cingulum

Question 9

Where is the maximum convexity on the labial/vestibular aspect of the maxillary lateral incisor?

a) Cervical third
b) Incisal third
c) 1/3 mesial and 1/3 cervical
d) All areas are equally convex

Answer 9

c) 1/3 mesial and 1/3 cervical

Question 10

Which tooth identification system uses + and - signs to indicate the position of teeth in different quadrants?

a) Arithmetic System
b) French System
c) Angle System
d) International System

Answer 10

a) Arithmetic system

Question 11

What is the orientation of the incisal edge of the maxillary lateral incisor (labial view)?

a) Straight and horizontal
b) Oblique upward from mesial to distal
c) Curved downward
d) Convex toward the lingual aspect

Answer 11

b) Oblique upward from mesial to distal

Question 12

In the labial/vestibular aspect, how many interlobular ditches are found on the maxillary lateral incisor?

a) None
b) One
c) Two
d) Three

Answer 12

c) two

Question 13

Which of the following best describes the labial/vestibular aspect of the maxillary lateral incisor?

a) The tooth is completely flat with no curvature.
b) The mesial outline is longer and flatter, while the distal outline is shorter and more convex.
c) Both the mesial and distal outlines are equally convex.
d) The tooth shows a concave outline on both sides.

Answer 13

b) The mesial outline is longer and flatter while the distal outline is shorter and more convex

Question 14

The incisal edge of the maxillary lateral incisor (labial/vestibular view) is:

a) Completely horizontal.
b) Oblique upward from mesial to distal.
c) Convex toward the gingiva.
d) Curved downward from distal to mesial.

Answer 14

b) Oblique upward from mesial to distal

Question 15

What is the shape of the maxillary lateral incisor crown when viewed from the mesial aspect?

a) Oval
b) Triangular
c) Rectangular
d) Circular

Answer 15

b) Triangular

Question 16

The cervical line (mesial aspect) of the maxillary lateral incisor is described as:

a) Completely straight.
b) V-shaped, with the tip of the V pointing toward the incisal edge.
c) Curved toward the root apex, forming an arch.
d) U-shaped, with both sides curving toward the incisal edge.

Answer 16

b) V-shaped, with the tip of the V pointing toward the incisal edge.

Question 17

In the distal aspect of the maxillary lateral incisor, how does the cervical outline differ from the mesial aspect?

a) It is flatter and less pronounced.
b) It is more curved and prominent than the mesial aspect.
c) There is no difference between the mesial and distal cervical outlines.
d) It forms a U-shape.

Answer 17

a) It is flatter and less pronounced

Question 18

Which of the following is true about the proximal contact areas of the maxillary lateral incisor (proximal view)?

a) They are located at the incisal edge and extend toward the root.
b) They are positioned near the cervical line.
c) They are located at the middle third and are convex.
d) They are located at the junction of the incisal and middle thirds.

Answer 18

d) they are located at the junction of the incisal and middle thirds

Question 19

On the lingual/palatal aspect of the maxillary lateral incisor, which feature is more pronounced compared to the labial aspect?

a) The cervical line
b) The incisal edge
c) The marginal ridges and cingulum
d) The mesial and distal outlines

Answer 19

c) the marginal ridges and cingulum

Question 20

The relief of the lingual/palatal aspect of the maxillary lateral incisor is described as:

a) Completely flat with no ridges.
b) Convex in the cervical third, concave in the incisal two-thirds.
c) Convex in the incisal two-thirds and concave in the cervical third.
d) Entirely convex from the cervical to the incisal edge.

Answer 20

b) convex in the cervical third, concave in the incisal two-thirds

Question 21

What is the shape of the crown of the maxillary lateral incisor when viewed from the lingual/palatal aspect?

a) Quadrilateral with distinct margins.
b) Oval with no clear angles.
c) Circular, with smooth transitions.
d) Triangular, with no prominent relief.

Answer 21

a) Quadrilateral with distinct margins

Question 22

Which of the following best describes the cingulum of the maxillary lateral incisor (lingual/palatal view)?

a) It is a flat surface near the root of the tooth.
b) It is a globular, hemisphere-like structure.
c) It is located on the incisal edge of the tooth.
d) It is a concave feature that extends to the root.

Answer 22

b) it is globular, hemisphere-like structure

Question 23

In the labial/vestibular aspect, the cervical line of the maxillary lateral incisor is:

a) Straight and horizontal.
b) Convex toward the root apex.
c) Concave toward the incisal edge.
d) V-shaped, with the tip pointing toward the incisal edge.

Answer 23

b) convex toward the root apex

Question 24

How does the incisal outline of the maxillary lateral incisor (incisal view) typically appear?

a) It has a straight, horizontal outline.
b) It is distinctly convex from mesial to distal.
c) It displays a concave shape towards the mesial and distal edges.
d) It forms a triangular shape with a pointed apex.

Answer 24

b) it is distinctly convex from mesial to distal

Question 25

Which of the following describes the labial/vestibular relief of the maxillary lateral incisor?

a) Flat in all directions.
b) Convex in both mesiodistal and cervico-incisal directions.
c) Concave in both directions.
d) Flat mesiodistally but convex cervico-incisally.

Answer 25

b) Convex in both mesiodistal and cervico-incisal directions

Question 26

In the lingual view, the maxillary lateral incisor crown has how many distinct outlines?

a) Two
b) Three
c) Four
d) Five

Answer 26

c) Four

Question 27

The proximal height of contour of the maxillary lateral incisor is located:

a) In the cervical third of the tooth.
b) In the incisal third of the tooth.
c) At the junction of the middle and incisal thirds.
d) Evenly distributed across the crown.

Answer 27

c) At the junction of the middle and incisal thirds