Maxillary Incisors Flashcards
From a facial aspect, what is the shape of the crown outline of a maxillary central incisor:
Trapezoid
From a facial aspect of a maxillary central incisor, the anatomical crown is:
Longer than it is wide
From a facial aspect of a maxillary central incisor, the mesial outline of the tooth is relatively:
Straight, only slightly convex
From a facial aspect of a maxillary central incisor, the height of the mesial surface is in the:
Incisal 1/3
From a facial aspect of a maxillary central incisor, the distal outline is more _____ than the mesial outline
Convex
From a facial aspect of a maxillary central incisor, the height of contour on the distal is at the:
Junction of middle & incisal 1/3s
From this facial aspect, label each side of the maxillary central incisor a mesial or distal
Left- distal
Right- mesial
From a facial aspect of a maxillary central incisor, the incisal outline is:
Straight
On newly erupted maxillary central incisors _____ are commonly present
Mamelons
One of three rounded protuberances found on the incisal edge of newly erupted incisors:
Mamelon
From a facial aspect of a maxillary central incisor, the mesioincisal angle is a:
Right angle
From a facial aspect of a maxillary central incisor, the distoincisal angle is:
More rounded than the mesioincisal angle
Looking at the facial aspect of the maxillary central incisor- label the distoincisal & mesioincisal line angles:
Left- distoincisal
Right- mesioincisal
Junction of two tooth surfaces
Line angle
Junction of three tooth surfaces
Point angle
The red lines represent
Mesiofacial & distofacial line angles
From a facial aspect of a maxillary central incisor, the cervical line (CEJ) is curved:
Apically
From a facial aspect of a maxillary central incisor, what anatomical features are present:
Developmental depressions & ridges
How many roots does a maxillary central incisor contain:
1
From a facial aspect of a maxillary central incisor, the shape of the root is:
Cone shaped, blunt apex
In a maxillary central incisor- describe the root length compared to crown length
Root is usually longer than the crown
From a facial aspect of a maxillary central incisor, the apex of the root is slightly:
Distal to the long axis of the tooth
A line extending through the center of the tooth lengthwise:
Long axis
A linear elevation on the surface of a tooth
Ridge
Ridges are named according to:
Their location
A lingual fossa is bounded by:
Incisal edge
Mesial/distal marginal ridges
Cingulum
Occasionally present on the lingual aspect of the maxillary central incisor:
Lingual pit
Bulbous convexity on the cervical third of the lingual surface on an anterior tooth:
Cingulum
A small pinpoint depression in the depths of developmental processes:
Pit
On a maxillary central incisor from a lingual aspect, what shape is the root
Cone shaped
On a maxillary central incisor from a lingual aspect, the root tapers:
Slightly distally
On a maxillary central incisor from a lingual aspect, the crown & root taper to:
Lingual
On a maxillary central incisor from a lingual aspect the CEJ is curved _____ toward the _____
Convex
Root
On a maxillary central incisor from a mesial aspect, the shape of the crown is:
Triangular or wedge shaped
On a maxillary central incisor from a mesial aspect, the facial outline is ______ while the lingual outline is _____
Slightly curved
Concavoconvex
On a maxillary central incisor from a mesial aspect the incisal edge is:
Flat
Describe the red and purple lines:
Red: concavoconvex
Purple: slightly convex (curved)
On a maxillary central incisor from a mesial aspect the tooth is bisected longitudinally with the incisal edge:
On the line or slightly lingual (rarely facial)
On a maxillary central incisor from a mesial aspect, the incisal surface slopes:
Slightly lingual
On a maxillary central incisor from a mesial aspect, what is the root shape:
Cone with blunt apex
On a maxillary central incisor from a mesial aspect, what is unique:
Mesial-Cervical line has the greatest amount of curvature from any tooth in the mouth
On a maxillary central incisor from a mesial aspect, the cervical line is ______ incisally
Convex
On a maxillary central incisor from a mesial aspect, the ____ curvature is greater than the ____ curvature
Mesial; distal
On a maxillary central incisor compare the thickness of the tooth from a distal aspect to the mesial aspect:
Crown looks thicker in the incisal 1/3 from a distal aspect
On a maxillary central incisor the curvature of the cervical line is ____ on the distal than it is on the mesial
Less
From a distal aspect of a maxillary central incisor, the CEJ curves ______ in an incisal direction
Convexly
Label mesial & distal
Left- distal
Right- mesial
On a maxillary central incisor from a incisal aspect what shape is seen:
Triangle
On a maxillary central incisor from an incisal aspect, the tooth is wider ____ than _____
Facially than lingually
On a maxillary central incisor from a incisal aspect, the facial surface is:
Broad & flat
On a maxillary central incisor from a incisal aspect, the lingual surface is:
Narrow & curved
On a maxillary central incisor from a incisal aspect, the incisal edge bisects the:
Faciolingual diameter
Label the facial and lingual sides:
Top- facial
Bottom- lingual