dental test bank Flashcards
Tooth #8 describes the Permanent Maxillary Right Central Incisor in the Universal numbering system. Identify this tooth using either the International Numbering System.
1,1
TRUE or FALSE (circle one) A transverse ridge is made up of two oblique ridges
f
Based on its name “bicuspid”, how many cusps are usually present on a premolar?
2
Which of the following is not a function of an incisor?
Grasp meat for tearing from the bone
TRUE OR FALSE: The mesial of 8 contacts the mesial of 9
TRUE
The incisal edge of a maxillary central incisor is located______________ a bisecting line from a proximal aspect.
ON
Where is the lingual height of contour on a maxillary lateral incisor located?
c 1/3
TRUE OR FALSE. As a general rule, the mesial curvature of the CEJ is greater than the distal.
T
TRUE OR FALSE. One distinct difference between maxillary and mandibular incisors is that mandibular incisors DO NOT HAVE a fossa, mesial and distal marginal ridges, or a cingulum.
F
Arrange the measurements of a mandibular central incisor from least to greatest. Remember, specific measurements are not important. only how the measurements compare with others.
For example: F_L > M D
Mesiodistal, Labiolingual, Incisal gingival, Cervico-apical
the incisal edge of a mandibular central incisor is _________ a bisecting line, while the cingulum is _________ a bisecting line.
lingual to, distal to
The engineering feature incorporated into buildings and mandibular central incisors for added strength is the __________.
I bea,m
Which of the following is not true about the Haplodont class of dentition?
a. They consist of a single cone
b. reptiles are haplodonts
c. there is no occlusion with Haplodonts
d. Jaw movements are related to and governed by tooth form in all cases including Haplodonts
e. all of the above are true
E
All teeth are formed from how many lobes?
4 or more
Humans are considered to have what tooth and jaw form?
Bunodont and isognathous (relatively)
What is the geometries of a maxillary central incisor from the facial and proximal view respectively?
Trapezoid, Triangle
Calcification of the permanent mandibular canine begins at about what age?
4 to 5 months
The mesial contact area of the permanent maxillary canine is centered where on the crown?
Junction of the incisal and middle third
Which of the following teeth is most likely to have a bifurcated root?
mandibular canine
Which cusp ridge is longer on a permanent maxillary canine?
distal
Which of the following characteristics, when viewed together from the labial aspect, give the appearance of the mandibular canine being bent distally at the CEJ?
Select all correct answers
mesial outline of the crown is almost straight with the mesial outline of the root
The distal outline has a concavity in the gingival third and a convexity in the incisal and middle third
At what age is calcification of the permanent mandibular 1st molar first evident?
At birth
Statement 1:
from the mesial view, all permanent mandibular posterior teeth resemble a rhombus.
Statement 2:
in relation to the root axis, the crowns of all mandibular posterior teeth are tilted towards the buccal.
Statement 1 is true and statement 2 is false
Which mandibular molar has a cruciform or cross shaped occlusal anatomy?
mandibular 2nd molar
Which mandibular molar has a cruciform or cross shaped occlusal anatomy?
mandibular 2nd molar
TRUE or FALSE
As a general rule the bifurcation of roots in mandibular molars tend to get larger and wider as you move posteriorly from 1st to 3rd molar.
F
Which cusp of the maxillary first molar is the largest and most developed?
Mesiolingual
Calcification of the permanent maxillary first molar begins ate what age?
at birth
Calcification of the permanent maxillary second molar begins at what age?
2.5 years
Which of the following teeth is least likely to have roots that are fused together to act as one large tapered root?
maxillary first moalr
The oblique ridge found on the maxillary first molar is formed by the union of which of the following structures?
Distal Ridge of the mesiolingual cusp and the triangular ridge of the distobuccal cusp.
True or False. It is possible for the roots of primary teeth to begin to resorb before they are done erupting.
TRUE
Eruption can be defined as: 1)The tooth’s emergence through the gingiva 2)When root formation if complete 3)When the First sign of calcification appears 4) The continuous movement from the dental bud to occlusal contact.
1 and 4
At what age does tooth J normally erupt?
29 months
The crowns of primary anterior teeth are wider mesiodistally in comparison with their crown length, than are the permanent anterior teeth.
T
Which tooth replaces tooth #R?
27
The number of point angles on posterior teeth is:
four
The lingual cusp tip on the maxillary first premolar is positioned:
Lingual to and mesial of the facial cusp.
The ridge that comprises the lingual segment of the transverse ridge of the maxillary first premolar is correctly named:
The lingual triangular cusp ridge
The ridge that separates the two lingual fossae on a maxillary canine is correctly named:
the lingual ridge
All height of contours are contact areas
f
The lingual crest of contour on the maxillary first premolar is located:
m 1/3
Viewed from the lingual, the lingual cusp tip of the maxillary 1st premolar is positioned:
medial to the facial cusp
Which tooth often displays a mesiolingual developmental groove?
mandibular 1st premolar
The distal marginal ridge of all posterior teeth is lower than the mesial.
false
