10 Questions
What is the most likely location of the proximal contact area of the maxillary central incisors?
Centered mesiodistally
Which feature is NOT typically observed on the labial aspect of the maxillary central incisors?
Mesial longitudinal depression
What is the characteristic feature of the lingual fossa of the maxillary central incisors?
Broad and wide
Which statement about the incisal ridge of the maxillary central incisors is true?
It is centered over the long axis of the tooth.
What is the likely location of the mesial cervical line of the maxillary central incisors?
Centered incisocervically
Which landmark on the maxillary Incisor is a smaller elevation on some portion of the crown produced by an extra formation of enamel?
A tubercle
Where is the mesial height of contour (contact area) located on the labial aspect of the maxillary Incisor?
In the incisal 1/3 near the incisal edge
What is the shape of the root of the maxillary Incisor, and how does it compare to the crown in terms of length?
Cone shaped with a blunt apex, 2-3mm longer than the crown
Which landmark on the maxillary Incisor makes up the bulk of the cervical third of the lingual surface?
Cingulum
Where is the distal height of contour (contact area) located on the labial aspect of the maxillary Incisor?
In the incisal 1/3 but further from the incisal edge
Study Notes
Maxillary Central Incisors
- The proximal contact area is likely located at the mesial third of the clinical crown, near the cervical line.
- The feature NOT typically observed on the labial aspect of the maxillary central incisors is a prominent labial ridge.
- The lingual fossa of the maxillary central incisors is characterized by a prominent, deep, and narrow V-shaped groove.
- The incisal ridge of the maxillary central incisors is typically straight, and its edges are sharp.
- The mesial cervical line of the maxillary central incisors is likely located at or near the cervical third of the clinical crown.
- The landmark on the maxillary incisor that is a smaller elevation on some portion of the crown produced by an extra formation of enamel is a mammelon.
- The mesial height of contour (contact area) on the labial aspect of the maxillary incisor is located at the junction of the cervical and middle thirds of the crown.
- The root of the maxillary incisor is single-rooted, and it is approximately 2-3 times longer than the crown.
- The bulk of the cervical third of the lingual surface of the maxillary incisor is made up by the cingulum.
- The distal height of contour (contact area) on the labial aspect of the maxillary incisor is located at the junction of the middle and incisal thirds of the crown.
Learn about the features and landmarks of the maxillary right central incisor, including its position, size, and unique characteristics such as the tubercle and cingulum.
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