Dental Anatomy Midterm Flashcards
When looking at the facial or lingual aspect of all anterior teeth, they have a:
Trapezoidal outline
The mesial and distal aspects of the anterior central and lateral incisors may be included within triangles
The base of the triangle is represented by the cervical portion of the crown and the apex by the incisal ridge.
Both statements are true
The maxillary permanent central incisor has these unique characteristics:
All of the above
Most prominent tooth
Mesial CEJ contour is greater than any other tooth
Second longest crown length of any other tooth
Widest crown of all anterior teeth
The maxillary permanent central incisor crown has a mesiodistal dimension greater than the faciolingual dimension.
True
The maxillary permanent lateral has these unique characteristics:
All of the above
Most common congenitally missing tooth
Second most variable tooth form
Lingual surface is the most concave of all incisors
The maxillary primary first molars are represented by letters:
B and I
The mixed dentition period begins when the primary teeth begin to emerge and lasts for about six years
False
The enamel, cementum, dentin, and pulp, make up the four hard tissues of the tooth.
False
Teeth numbers 7,8,9,10, could have what surfaces
A,b,&c
Facial
Lingual
Labial
With maxillary incisors:
The facial and lingual CEJ’s curve apically.
The mesial and distal CEJ’s curve coronally
Both statements are true
Anterior teeth have six point angles and posterior teeth have eight point angles.
All teeth have four line angles.
Both statements are false
Which of the following is true about premolars?
All of the above
They follow canines and precede molars
There are usually four of them in each arch
They are located posteriorly in the arch
Which of the following groups of numbers identify the maxillary left anterior
teeth?
9, 10, 11
That portion of the pulp cavity found mainly within the coronal portion of the tooth
is called the:
pulp chamber
The junction of the dentin and the enamel is called the:
dentinoenamel junction
Which of the following is an example of a correctly formulated point angle?
distolabioincisal
A _____ is the lingual lobe of an anterior tooth.
Cingulum
A \_\_\_\_\_\_\_\_\_\_ is any one of the three rounded protuberances found on the incisal ridges of newly erupted incisor teeth. Lobe Mamelon Cusp Supplemental groove
Mamelon
The incised edge takes an oblique course appearing as if twisted around the long axis of the root. this describes most succinctly the
mandibular lateral incisor-incisal view
The labiolingual (faciolingual) dimension of the maxillary and mandibular canines is greater than their mesiodistal dimension.
True
A linguogingival grove may be present on the root (and possibly on the crown) of the maxillary lateral incisor.
A maxillary lateral incisor has a single conical root that is relatively smooth and straight but may curve slightly to the distal.
Both statements are true
In the primary dentition there are ____ teeth per arch, while in the permanent dentition there are ____ teeth per arch.
10, 16
Which characteristics correctly identify the mandibular central incisor:
a. crown is generally narrower mesiodistally than the crown of a mandibular lateral incisor
b. crown is asymmetrical with a rounded distoincisal angle
c. mesial and distal heights of contour are at relatively equal distances from the cervical
a and c
Which of the following characteristics describe #26?
all of the above
A. distal contact area closer to cervical than mesial contact area
b. labial surface flatter than #7’s
c. appears twisted on its crown when viewed incisally
